---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Mon 03/03/03: 47 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:48 AM - Air-Data Computer (richard soennichsen) 2. 06:52 AM - Re: Free speed (Scott Bilinski) 3. 07:05 AM - Re: Fw: Garmin GPS 35/AnywhereMap feeding a NavAid (Sam Buchanan) 4. 07:13 AM - Re: Odyssey Battery (best source these days) (Rob Miller) 5. 07:29 AM - Chicago Pneumatic CP-214 Squeezer FOR SALE (Rob Miller) 6. 07:32 AM - Re: Cedar Key, Fl (Ollie Washburn) 7. 07:48 AM - CP 214 Squeezer on Ebay (Bill Dube) 8. 07:53 AM - Re: Free speed (Dave Bristol) 9. 07:54 AM - What magnetic heading input? (David Carter) 10. 08:18 AM - Re: Air Box/cowl Interference? (Pat Perry) 11. 08:38 AM - Fw: What magnetic heading input? (David Carter) 12. 09:00 AM - Re: Odyssey Battery (best source these days) (James E. Clark) 13. 09:03 AM - Re: Fw: Garmin GPS 35/AnywhereMap feeding a NavAid (Mark Phillips) 14. 09:12 AM - Re: Free speed (LeastDrag93066@aol.com) 15. 09:40 AM - Re: Free speed (HCRV6@aol.com) 16. 09:42 AM - Re: Free speed (Scott Bilinski) 17. 10:01 AM - Re: Free speed (Kysh) 18. 10:06 AM - Re: Fw: Garmin GPS 35/AnywhereMap feeding a NavAid (Sam Buchanan) 19. 10:11 AM - Re: Raise your hand! (Dave von Linsowe) 20. 10:59 AM - Re: Raise your hand! (lucky macy) 21. 11:16 AM - Re: Raise your hand! (lucky macy) 22. 11:16 AM - Re: Free speed (Jim Norman) 23. 11:33 AM - Flap Hinge Pin Safety (Ken Brooks) 24. 11:36 AM - RV8 canopy slider parts for RV3 (Rick Fogerson) 25. 12:26 PM - Re: Free speed (Dr. Leathers) 26. 02:13 PM - Re: Fw: Garmin GPS 35/AnywhereMap feeding a NavAid (Mark Phillips) 27. 02:20 PM - Re: Free speed (Garry LeGare) 28. 03:19 PM - RV3 Canopy (Ron Rosenberg) 29. 03:46 PM - Re: Free speed (van Bladeren, Ron) 30. 03:55 PM - Re: Odyssey Battery (best source these days) (Bill Dube) 31. 03:55 PM - Re: Free speed (Jim Oke) 32. 04:07 PM - Re: RV3 Canopy (Jim Oke) 33. 04:12 PM - Re: Free speed (Bill Dube) 34. 04:28 PM - Re: Free speed (Bill Marvel) 35. 04:41 PM - Re: Free speed (Gert) 36. 04:44 PM - Flap template? (Larry Bowen) 37. 05:07 PM - Re: Cedar Key, Fl (John Huft) 38. 05:15 PM - Re: Fw: Garmin GPS 35/AnywhereMap feeding a NavAid (Sam Buchanan) 39. 05:31 PM - Re: Air-Data Computer (Jerry Springer) 40. 05:58 PM - Re: Free speed (Jerry Springer) 41. 06:48 PM - Prop Tape (RGray67968@aol.com) 42. 07:02 PM - Re: Prop Tape (Charles Rowbotham) 43. 07:50 PM - Dynon developments- EFIS-D10 (Jim Jewell) 44. 08:06 PM - Re: Free speed (LeastDrag93066@aol.com) 45. 08:24 PM - Re: Dynon developments- EFIS-D10 (Noel & Yoshie Simmons) 46. 08:44 PM - Re: Free speed (Jim Oke) 47. 08:52 PM - Re: Dynon developments- EFIS-D10 (Larry Bowen) ________________________________ Message 1 _____________________________________ Time: 01:48:39 AM PST US From: richard soennichsen Subject: RV-List: Air-Data Computer --> RV-List message posted by: richard soennichsen Hey all, A buddy turned me onto this (the creators presented at the local EAA meeting), a Hell of a value in flight computers. Check it out: www.fdatasystems.com Richard ________________________________ Message 2 _____________________________________ Time: 06:52:32 AM PST US From: Scott Bilinski Subject: Re: RV-List: Free speed --> RV-List message posted by: Scott Bilinski How about a picture or a little more verbal detail? At 07:30 PM 3/2/03 -0800, you wrote: >--> RV-List message posted by: "Russ Alnutt" > >I wish to share something with all RVers. I discovered this by accident. If >you put a reverse scoop on the belly of your plane towards the back you will >likely pickup about 5mph. I did this because I thought that the cockpit had >to much positive pressure and couldn't get out. I was partially right. When >you let the air out of the back the sliding canopy does not go our as far >and the speed increases. Try it it will only cost you a little time. > >rsalnutt@inreach.com > > Scott Bilinski Eng dept 305 Phone (858) 657-2536 Pager (858) 502-5190 ________________________________ Message 3 _____________________________________ Time: 07:05:00 AM PST US From: Sam Buchanan Subject: Re: Fw: RV-List: Garmin GPS 35/AnywhereMap feeding a NavAid --> RV-List message posted by: Sam Buchanan Jeff Point wrote: > > --> RV-List message posted by: Jeff Point > > Sam, > > If I read you correctly, when you switched from the Sentinal flash card > GPS to the GPS35, you wired the Lowrance back into the Naviad and use > the GPS35 to drive the Ipaq only. In all your experimenting, did you > ever have a setup where the Navaid was driven by the anywhere map, which > was getting signal from the GPS35? If so how did it work? > > Jeff Point > RV-6 finish kit > Milwaukee WI > Jeff, you are correct. Even though I have not driven the Navaid with the iPAQ/GPS35 combination, I have no reason to think it will not work superbly. As I understand the process, the tracking info is generated by the AnywhwereMap software so the source of the raw GPS data to the iPAQ should be inconsequential as long as it is solid data. The GPS35 is a fine receiver and has operated flawlessly in my installation. There were some tracking issues with earlier versions of AnywhereMap, but according to Jim Ham (Mr. Smart Coupler) the data stream from the newer versions contains all info to drive the Smart Coupler with full functionality. The biggest issue I see with the GPS35/iPAQ/ Navaid scenario is figuring out the cable interfaces. There are quite a few possible combinations depending on which iPAQ is being used and whether or not the Control Vision interface box is used. Now, some pilots are beginning to incorporate Blue Tooth, and this throws another kink into the bundle. :-) But.......there should be a way to hook up any system (except the Dell PDA which has no serial port......unless you figure out some way to export NMEA via an expansion slot) if you do your homework. Sam Buchanan ________________________________ Message 4 _____________________________________ Time: 07:13:19 AM PST US From: Rob Miller Subject: Re: RV-List: Odyssey Battery (best source these days) --> RV-List message posted by: Rob Miller Your analysis makes sense, Dan. I recently switched from the Concord to a 20 AH Panasonic (22.5 pounds vs. 14) purchased from Digikey. The Panasonic will NOT crank the engine as vigorously as the Concord and the aircraft is hard pressed to start on a cold day. I will either need switch to the Odyssey and/or install electronic ignition in order to improve starting performance. Rob Miller -8 N262RM "Bad Cat" --- Dan Checkoway wrote: > --> RV-List message posted by: "Dan Checkoway" > > I figured I'd pass this info on to the lists...I just ordered my Odyssey > PC680 battery online from Sunn Battery Co. Originally I was going to > order > it from Batteries4Everything.com, which had it slightly cheaper, but > here's > the deal: > > I shopped around for cheaper alternatives to the PC680, such as the > P174-ND > and P231-ND (both Panasonic) from Digi-Key. The problem I had with > those > two models, while they are MUCH cheaper and possibly a few ounces > lighter > than the Odyssey, is that they have higher internal resistance (12 and > 11 > milliohms respectively, compared to the Odyssey's 7 milliohms)...and > they > also have a very slightly different form factor. I didn't want to screw > around with that. For $30 more I'll have the peace of mind that I'm > using > what Van's uses (I know that's a somewhat passive approach, but oh > well). > > Buying from Sunn Battery there's no sales tax since they're in Florida > (I'm > in CA), they don't charge any handling fees (that I could see), and > shipping > is FIXED at $5.50 for Priority Mail. It worked out to $80.09 > door-to-door. > > Batteries4Everything, while having a $12 cheaper price, is in CA...so > there > would be sales tax. Plus they tack on a handling fee. Then, having to > ship > 15 pounds via UPS (possibly hazmat?), would probably end up being more > expensive in the end. > > Hope this helps if you're still looking to buy the PC680. > > )_( Dan > RV-7 N714D (finish) > http://www.rvproject.com > > ----- Original Message ----- > From: > To: > Subject: Thank you for your order - #4779 > > > > Dear Dan Checkoway, > > > > Thank You for your order. We'll begin processing immediately. It > > should ship out within 2-3 business days at the latest. If you have > > any questions please email us at sunnbattery@hotmail.com We > > appreciate your business. > > Order no. 4779 > > > > Item Description Qty Unit Price Total Price > > Odyssey PC680 1 $74.59 $74.59 > > Battery > > Subtotal $74.59 > > Shipping $5.50 > > Tax $0.00 > > Total $80.09 > > Total amount reserved on your credit card: $80.09 > > > > Your card will not be charged until the order has been shipped (if > > applicable). When the order ships, or if your order is canceled, > > we'll send you another email. > > > > If you have any questions about your > > order, please reply to this email. > > > > > > Shipping address: > > ... > > > > USPS Priority Mail > > > > > > http://taxes.yahoo.com/ ________________________________ Message 5 _____________________________________ Time: 07:29:42 AM PST US From: Rob Miller Subject: RV-List: Chicago Pneumatic CP-214 Squeezer FOR SALE --> RV-List message posted by: Rob Miller Ok guys, here it is: For Sale: The real deal, not some imitation, well used but great functioning CP-214 pneumatic squeezer. Unit comes with a 1" yoke. Much more powerful than the import knock-offs. Will squeeze 1/8th or larger rivets with little or no sensitivity as to die position--no fooling with washers to get the appropriate leverage--it simply squeezes the rivet. $350/BO. Selling because my plane is finished and I don't plan on building another. Please reply off-list rmill2000@yahoo.com Do not archive Rob Miller -8 N262RM "Bad Cat" 47 hours http://taxes.yahoo.com/ ________________________________ Message 6 _____________________________________ Time: 07:32:14 AM PST US From: "Ollie Washburn" Subject: Re: RV-List: Cedar Key, Fl --> RV-List message posted by: "Ollie Washburn" I have only been to Cedar Key a couple of times even though i only live about 20mins.away in RV so don't know about accommodations except they have several resturants.HOWEVER the taxi ride to town is $5 PER person and $5 PER person back to airport. Ollie 6A Central Fl. ----- Original Message ----- From: Lenleg@aol.com Subject: RV-List: Cedar Key, Fl --> RV-List message posted by: Lenleg@aol.com We have several RVs making a trip to the Keys in May with a night over in Cedar Key ... has been a while since I stayed there ... do any of you Florida guys have suggestions for hotels, bed & breakfast, restaurants? Thanks !! Len Leggette RV-8A N901LL Greensboro, N.C. 57 hours !! ________________________________ Message 7 _____________________________________ Time: 07:48:19 AM PST US From: Bill Dube Subject: RV-List: CP 214 Squeezer on Ebay --> RV-List message posted by: Bill Dube There is a very good deal on a Chicago Pneumatic model 214 rivet squeezer on Ebay http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=31482&item=2512694849&rd=1 Item #2512694849 $76 at the moment. ________________________________ Message 8 _____________________________________ Time: 07:53:15 AM PST US From: Dave Bristol Subject: Re: RV-List: Free speed --> RV-List message posted by: Dave Bristol Russ, I don't think that increasing airflow through the fuselage is going to increase airspeed. However if you have a leak in your static system, lowering the pressure in the fuselage will increase the indicated airspeed. Dave RV6 So.Cal EAA Technical Counselor Russ Alnutt wrote: > --> RV-List message posted by: "Russ Alnutt" > > I wish to share something with all RVers. I discovered this by accident. If you put a reverse scoop on the belly of your plane towards the back you will likely pickup about 5mph. I did this because I thought that the cockpit had to much positive pressure and couldn't get out. I was partially right. When you let the air out of the back the sliding canopy does not go our as far and the speed increases. Try it it will only cost you a little time. > > rsalnutt@inreach.com > ________________________________ Message 9 _____________________________________ Time: 07:54:01 AM PST US From: "David Carter" \"aeroelectric-list\"" Subject: RV-List: What magnetic heading input? --> RV-List message posted by: "David Carter" Just visited your web site ( http://www.fdatasystems.com/contact_information.htm ). Noticed the "winds" calculation feature. Didn't see a "magnetic heading" input to the box, which is a "traditional" requirement to calculate winds. Do you calculate wind differently, having enough other data, using ground track and ground speed from GPS and TAS to calculate backwards to get "wind speed and direction"? If you can do this then you should also be able to calculate "mag heading" and display it. Would be a nice poor man's stabilized mag compass - airborne only - (based on GPS & ADC TAS info). - Stabilized mag compass systems are quite expensive - this "solid state" "back door calculated value" method would be a real financial boon to the homebuilt aircraft market. - When you package it in a round case, you could provide an analog type display of a "gyro compass", in addition to the other items you already plan to display. That way, I could select the "round dial stabilized mag compass" page and put the instrument right below my attitude indicator to use as my "gyro compass" in the instrument cross check. David Carter 409-722-7259 ________________________________ Message 10 ____________________________________ Time: 08:18:55 AM PST US From: "Pat Perry" Subject: Re: RV-List: Air Box/cowl Interference? --> RV-List message posted by: "Pat Perry" Mine has it on the lower right, I'm going to shift the box left 1/4" by slotting the holes. Pat Perry Dallas, PA RV-4 N154PK Flies great! >From: Rob Miller >Reply-To: rv-list@matronics.com >To: rv-list@matronics.com >Subject: Re: RV-List: Air Box/cowl Interference? >Date: Wed, 26 Feb 2003 12:25:01 -0800 (PST) > >--> RV-List message posted by: Rob Miller > >Scott > >My airbox and cowl make very slight contact on the left side with my > -A1A. I've shaved off a couple of rivets on the airbox and have been >monitoring the situation and watching for wear. I'm sure this is >relatively common, I can't believe that "they've never heard of it." > >Rob Miller >-8 N262RM "Bad Cat" 47 hours > > >--- Scott Bilinski wrote: > > --> RV-List message posted by: Scott Bilinski > > > > > > I have a IO-360-C1A engine. It has a Superior Air Parts Sump which is > > the same > > externally as the A1A. The problem is with my filtered airbox. It hits > > the side > > of the cowl, so I remade the plate and moved the air intake hole over an > > inch > > and everything is fine now. Is anyone else having this problem? I talked > > with > > Vans and they have never heard of it. I have the Air Flow Performance > > injection > > kit for a RV-8 and they have has never heard of it, Bart at AeroSport > > Power has > > heard of this a few times. So what gives? Where is the problem? No one > > seems to > > know. > > > > > > Scott Bilinski > > Eng dept 305 > > Phone (858) 657-2536 > > Pager (858) 502-5190 > > > > > > > > > > > > > > >http://taxes.yahoo.com/ > > ________________________________ Message 11 ____________________________________ Time: 08:38:05 AM PST US From: "David Carter" "aeroelectric-list" Subject: RV-List: Fw: What magnetic heading input? --> RV-List message posted by: "David Carter" For RV-list and Aeroelectric, here's the response re "magnetic heading" and "wind" - reply is from the ADC vendor David ----- Original Message ----- From: "Charles Newman" Subject: Re: What magnetic heading input? > David, > > Thanks for your question. > > There are three values the user must input to our > unit. Heading, Barometric Pressure and Fuel added to > tanks. When the "wind" page is selected on the > AFP-30, the heading will initially show the GPS track. > The user must then adjust it a few degrees to agree > with his magnetic compass or DG to get an accurate > winds aloft reading. > > I wish we could find the heading via a "back door" > method, but it is not mathematically possible. We are > searching for an economical magnetic heading sensor to > feed realtime heading to our computer and perhaps a > stand alone indicator as you suggested. For now it > will require a small turn of the knob. > > > Thanks for your interest, > > Charles Newman > 831-662-9502 > > > --- David Carter wrote: > > Just visited your web site ( > > http://www.fdatasystems.com/contact_information.htm > > ). Noticed the "winds" calculation feature. Didn't > > see a "magnetic heading" input to the box, which is > > a "traditional" requirement to calculate winds. Do > > you calculate wind differently, having enough other > > data, using ground track and ground speed from GPS > > and TAS to calculate backwards to get "wind speed > > and direction"? > > > > If you can do this then you should also be able to > > calculate "mag heading" and display it. Would be a > > nice poor man's stabilized mag compass - airborne > > only - (based on GPS & ADC TAS info). > > - Stabilized mag compass systems are quite > > expensive - this "solid state" "back door calculated > > value" method would be a real financial boon to the > > homebuilt aircraft market. > > - When you package it in a round case, you > > could provide an analog type display of a "gyro > > compass", in addition to the other items you already > > plan to display. That way, I could select the > > "round dial stabilized mag compass" page and put the > > instrument right below my attitude indicator to use > > as my "gyro compass" in the instrument cross check. > > > > David Carter > > 409-722-7259 > > > > > ===== > > ________________________________ Message 12 ____________________________________ Time: 09:00:48 AM PST US From: "James E. Clark" Subject: RE: RV-List: Odyssey Battery (best source these days) --> RV-List message posted by: "James E. Clark" Go with the Odessey first. If the Panasonic won't turn it over a full turn then the EI is not going to get you there. The battery route is about 1/10 the EI route. You will *probably* add EI later for other reasons though. :-) James ... been "there" (EI + Panasonic + cold day = "jump start") ... Odessey now installed on O-320 with "old style" starter > -----Original Message----- > From: owner-rv-list-server@matronics.com > [mailto:owner-rv-list-server@matronics.com]On Behalf Of Rob Miller > Sent: Monday, March 03, 2003 10:13 AM > To: rv-list@matronics.com > Subject: Re: RV-List: Odyssey Battery (best source these days) > > > --> RV-List message posted by: Rob Miller > > Your analysis makes sense, Dan. > > I recently switched from the Concord to a 20 AH Panasonic (22.5 pounds vs. > 14) purchased from Digikey. The Panasonic will NOT crank the engine as > vigorously as the Concord and the aircraft is hard pressed to start on a > cold day. I will either need switch to the Odyssey and/or install > electronic ignition in order to improve starting performance. > > Rob Miller > -8 N262RM "Bad Cat" > > > --- Dan Checkoway wrote: > > --> RV-List message posted by: "Dan Checkoway" > > > > I figured I'd pass this info on to the lists...I just ordered my Odyssey > > PC680 battery online from Sunn Battery Co. Originally I was going to > > order > > it from Batteries4Everything.com, which had it slightly cheaper, but > > here's > > the deal: > > > > I shopped around for cheaper alternatives to the PC680, such as the > > P174-ND > > and P231-ND (both Panasonic) from Digi-Key. The problem I had with > > those > > two models, while they are MUCH cheaper and possibly a few ounces > > lighter > > than the Odyssey, is that they have higher internal resistance (12 and > > 11 > > milliohms respectively, compared to the Odyssey's 7 milliohms)...and > > they > > also have a very slightly different form factor. I didn't want to screw > > around with that. For $30 more I'll have the peace of mind that I'm > > using > > what Van's uses (I know that's a somewhat passive approach, but oh > > well). > > > > Buying from Sunn Battery there's no sales tax since they're in Florida > > (I'm > > in CA), they don't charge any handling fees (that I could see), and > > shipping > > is FIXED at $5.50 for Priority Mail. It worked out to $80.09 > > door-to-door. > > > > Batteries4Everything, while having a $12 cheaper price, is in CA...so > > there > > would be sales tax. Plus they tack on a handling fee. Then, having to > > ship > > 15 pounds via UPS (possibly hazmat?), would probably end up being more > > expensive in the end. > > > > Hope this helps if you're still looking to buy the PC680. > > > > )_( Dan > > RV-7 N714D (finish) > > http://www.rvproject.com > > > > ----- Original Message ----- > > From: > > To: > > Subject: Thank you for your order - #4779 > > > > > > > Dear Dan Checkoway, > > > > > > Thank You for your order. We'll begin processing immediately. It > > > should ship out within 2-3 business days at the latest. If you have > > > any questions please email us at sunnbattery@hotmail.com We > > > appreciate your business. > > > Order no. 4779 > > > > > > Item Description Qty Unit Price Total Price > > > Odyssey PC680 1 $74.59 $74.59 > > > Battery > > > Subtotal $74.59 > > > Shipping $5.50 > > > Tax $0.00 > > > Total $80.09 > > > Total amount reserved on your credit card: $80.09 > > > > > > Your card will not be charged until the order has been shipped (if > > > applicable). When the order ships, or if your order is canceled, > > > we'll send you another email. > > > > > > If you have any questions about your > > > order, please reply to this email. > > > > > > > > > Shipping address: > > > ... > > > > > > USPS Priority Mail > > > > > > > > > > > > > > > http://taxes.yahoo.com/ > > ________________________________ Message 13 ____________________________________ Time: 09:03:44 AM PST US From: Mark Phillips Subject: Re: Fw: RV-List: Garmin GPS 35/AnywhereMap feeding a NavAid --> RV-List message posted by: Mark Phillips Hi Sam! The Dell Axim is now available with serial cable- Craig at PCFlightSystems is currently building one of their ADAHARS systems with GPS moving map to feed two Axims. Won't have any air experience for a while yet, 8-( but it will be test-flown in my truck soon 8-) for some basic evaluation and familiarization! http://www.pcflightsystems.com/pcefis.html From The PossumWorks in TN Mark > > But.......there should be a way to hook up any system (except the Dell > PDA which has no serial port......unless you figure out some way to > export NMEA via an expansion slot) if you do your homework. > > Sam Buchanan ________________________________ Message 14 ____________________________________ Time: 09:12:47 AM PST US From: LeastDrag93066@aol.com Subject: Re: RV-List: Free speed --> RV-List message posted by: LeastDrag93066@aol.com Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph increase by mechanically clamping the back of the canopy down to the fuselage. (Early issue of the RVator) What I read Russ suggesting is an aerodynamic clamp. By providing an aerodynamically active outlet for the air pressure under the canopy, it eliminates the slight positive pressure under the canopy (relative to the Bernoulli's pulling the canopy up) and keeps the canopy against the fuselage. Jim Ayers RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, bj034@lafn.org writes: > Russ, > > I don't think that increasing airflow through the fuselage is going to > increase airspeed. However if you have a leak in your static system, > lowering the pressure in the fuselage will increase the indicated airspeed. > > Dave RV6 So.Cal > EAA Technical Counselor > > > Russ Alnutt wrote: > > > --> RV-List message posted by: "Russ Alnutt" > > > > I wish to share something with all RVers. I discovered this by accident. > If you put a reverse scoop on the belly of your plane towards the back you > will likely pickup about 5mph. I did this because I thought that the > cockpit had to much positive pressure and couldn't get out. I was partially > right. When you let the air out of the back the sliding canopy does not go > our as far and the speed increases. Try it it will only cost you a little > time. > > > > rsalnutt@inreach.com > > > ________________________________ Message 15 ____________________________________ Time: 09:40:14 AM PST US From: HCRV6@aol.com Subject: Re: RV-List: Free speed --> RV-List message posted by: HCRV6@aol.com In a message dated 3/2/03 7:43:21 PM Pacific Standard Time, rsalnutt@inreach.com writes: << I wish to share something with all RVers. I discovered this by accident. If you put a reverse scoop on the belly of your plane towards the back you will likely pickup about 5mph. >> How about a little more information, like where exactly and what size scoop. Was this a NASA type air scoop? It seems to me that these details could be very relevant to the performance gain you are seeing. Thanks. Harry Crosby Pleasanton, California RV-6, firewall forward ________________________________ Message 16 ____________________________________ Time: 09:42:24 AM PST US From: Scott Bilinski Subject: Re: RV-List: Free speed --> RV-List message posted by: Scott Bilinski So what I am hearing is, place a NACA scoop on the inside belly of the plane facing backwards so it pulls air out. Is this correct? At 12:10 PM 3/3/03 -0500, you wrote: >--> RV-List message posted by: LeastDrag93066@aol.com > >Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph >increase by mechanically clamping the back of the canopy down to the >fuselage. (Early issue of the RVator) >What I read Russ suggesting is an aerodynamic clamp. >By providing an aerodynamically active outlet for the air pressure under the >canopy, it eliminates the slight positive pressure under the canopy (relative >to the Bernoulli's pulling the canopy up) and keeps the canopy against the >fuselage. > >Jim Ayers >RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) > >In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, >bj034@lafn.org writes: > >> Russ, >> >> I don't think that increasing airflow through the fuselage is going to >> increase airspeed. However if you have a leak in your static system, >> lowering the pressure in the fuselage will increase the indicated airspeed. >> >> Dave RV6 So.Cal >> EAA Technical Counselor >> >> >> Russ Alnutt wrote: >> >> > --> RV-List message posted by: "Russ Alnutt" >> > >> > I wish to share something with all RVers. I discovered this by accident. >> If you put a reverse scoop on the belly of your plane towards the back you >> will likely pickup about 5mph. I did this because I thought that the >> cockpit had to much positive pressure and couldn't get out. I was partially >> right. When you let the air out of the back the sliding canopy does not go >> our as far and the speed increases. Try it it will only cost you a little >> time. >> > >> > rsalnutt@inreach.com >> > >> > > Scott Bilinski Eng dept 305 Phone (858) 657-2536 Pager (858) 502-5190 ________________________________ Message 17 ____________________________________ Time: 10:01:30 AM PST US From: Kysh Subject: Re: RV-List: Free speed --> RV-List message posted by: Kysh As LeastDrag93066@aol.com was saying: > --> RV-List message posted by: LeastDrag93066@aol.com > > Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph > increase by mechanically clamping the back of the canopy down to the > fuselage. (Early issue of the RVator) > What I read Russ suggesting is an aerodynamic clamp. > By providing an aerodynamically active outlet for the air pressure under the > canopy, it eliminates the slight positive pressure under the canopy (relative > to the Bernoulli's pulling the canopy up) and keeps the canopy against the > fuselage. Silly me, I thought the whole thing was tongue-in-cheek. :< -Kysh do not archive -- | 'Life begins at 120kias' - http://www.lapdragon.org/flying | | CBR-F4 streetbike - http://www.lapdragon.org/cbr | | 1968 Mustang fastback - http://www.lapdragon.org/mustang | | Got 'nix? - http://www.infrastructure.org/ | | KG6FOB - http://www.lapdragon.org/ham | | Give blood: Play Hockey! http://www.unixdragon.com/ | ________________________________ Message 18 ____________________________________ Time: 10:06:48 AM PST US From: Sam Buchanan Subject: Re: Fw: RV-List: Garmin GPS 35/AnywhereMap feeding a NavAid --> RV-List message posted by: Sam Buchanan Mark Phillips wrote: > > --> RV-List message posted by: Mark Phillips > > Hi Sam! > > The Dell Axim is now available with serial cable- Craig at PCFlightSystems is > currently building one of their ADAHARS systems with GPS moving map to feed > two Axims. Won't have any air experience for a while yet, 8-( but it > will be test-flown in my truck soon 8-) for some basic evaluation and > familiarization! > > http://www.pcflightsystems.com/pcefis.html > > >From The PossumWorks in TN > Mark Well......ok......you have our curiosity aroused.......tell us more! =8 O Just what are you sending to the "two Axims"? And, how does the serial cable work (what kind of connectors, etc)? Sounds like things are getting interesting in the Skunkworks. :-) Sam Buchanan ________________________________ Message 19 ____________________________________ Time: 10:11:55 AM PST US From: "Dave von Linsowe" Subject: Re: RV-List: Raise your hand! --> RV-List message posted by: "Dave von Linsowe" I'm working on being there via cattle car... Not having been to Sun-n-Fun before, are there any days better than others? I definitely want to see the RV's in the Sun "100". Dave RV-6 N98AR The need for (more) speed---> Waiting for new MT prop. ________________________________ Message 20 ____________________________________ Time: 10:59:50 AM PST US From: "lucky macy" Subject: Re: RV-List: Raise your hand! --> RV-List message posted by: "lucky macy" In the past, if you go sun n fun's official web site they usually list by day who the airshow performers are going to be and other flying and non-flying events. So I usually booked my days by making sure I'd catch a Tucker or Handley airshow. But the race stuff and time to climb is also usually scheduled ahead of time. lucky >From: "Dave von Linsowe" >Reply-To: rv-list@matronics.com >To: >Subject: Re: RV-List: Raise your hand! >Date: Mon, 3 Mar 2003 13:17:54 -0500 > >--> RV-List message posted by: "Dave von Linsowe" > >I'm working on being there via cattle car... > >Not having been to Sun-n-Fun before, are there any days better than others? >I definitely want to see the RV's in the Sun "100". > >Dave >RV-6 N98AR >The need for (more) speed---> Waiting for new MT prop. > > ________________________________ Message 21 ____________________________________ Time: 11:16:12 AM PST US From: "lucky macy" Subject: Re: RV-List: Raise your hand! --> RV-List message posted by: "lucky macy" http://www.sun-n-fun.org/content/events/archive.asp?section=yearround&body=event copy this in as one line lucky >From: "Dave von Linsowe" >Reply-To: rv-list@matronics.com >To: >Subject: Re: RV-List: Raise your hand! >Date: Mon, 3 Mar 2003 13:17:54 -0500 > >--> RV-List message posted by: "Dave von Linsowe" > >I'm working on being there via cattle car... > >Not having been to Sun-n-Fun before, are there any days better than others? >I definitely want to see the RV's in the Sun "100". > >Dave >RV-6 N98AR >The need for (more) speed---> Waiting for new MT prop. > > ________________________________ Message 22 ____________________________________ Time: 11:16:12 AM PST US From: "Jim Norman" Subject: RE: RV-List: Free speed --> RV-List message posted by: "Jim Norman" Careful everybody... LOTS of physics, aerodynamics, etc, etc at play here. There is very little free in life, and this may be the case here as well. Remember, the chance of sucking exhaust fumes into the cabin may be as high as getting air OUT. ALSO, as a physics major (back when Bernoulli was alive), I have to tell you that it is impossible to equalize pressure inside and outside the cabin. The differences in air speed (slow inside the plane and fast outside) dictates that there will ALWAYS be a pressure difference. So... "danger Will Robinson!"... go slow partner. jim Tampa -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com]On Behalf Of Scott Bilinski Subject: Re: RV-List: Free speed --> RV-List message posted by: Scott Bilinski So what I am hearing is, place a NACA scoop on the inside belly of the plane facing backwards so it pulls air out. Is this correct? At 12:10 PM 3/3/03 -0500, you wrote: >--> RV-List message posted by: LeastDrag93066@aol.com > >Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph >increase by mechanically clamping the back of the canopy down to the >fuselage. (Early issue of the RVator) >What I read Russ suggesting is an aerodynamic clamp. >By providing an aerodynamically active outlet for the air pressure under the >canopy, it eliminates the slight positive pressure under the canopy (relative >to the Bernoulli's pulling the canopy up) and keeps the canopy against the >fuselage. > >Jim Ayers >RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) > >In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, >bj034@lafn.org writes: > >> Russ, >> >> I don't think that increasing airflow through the fuselage is going to >> increase airspeed. However if you have a leak in your static system, >> lowering the pressure in the fuselage will increase the indicated airspeed. >> >> Dave RV6 So.Cal >> EAA Technical Counselor >> >> >> Russ Alnutt wrote: >> >> > --> RV-List message posted by: "Russ Alnutt" >> > >> > I wish to share something with all RVers. I discovered this by accident. >> If you put a reverse scoop on the belly of your plane towards the back you >> will likely pickup about 5mph. I did this because I thought that the >> cockpit had to much positive pressure and couldn't get out. I was partially >> right. When you let the air out of the back the sliding canopy does not go >> our as far and the speed increases. Try it it will only cost you a little >> time. >> > >> > rsalnutt@inreach.com >> > >> > > Scott Bilinski Eng dept 305 Phone (858) 657-2536 Pager (858) 502-5190 ________________________________ Message 23 ____________________________________ Time: 11:33:57 AM PST US From: "Ken Brooks" Subject: RV-List: Flap Hinge Pin Safety --> RV-List message posted by: "Ken Brooks" Many thanks to all who responded with their hinge pin methods/ideas. I love this list! Don't know which I'll use, but I'm thinkin'. . . Ken Brooks Roscoe, IL Do Not Archive ________________________________ Message 24 ____________________________________ Time: 11:36:22 AM PST US From: "Rick Fogerson" Subject: RV-List: RV8 canopy slider parts for RV3 --> RV-List message posted by: "Rick Fogerson" Does anyone know if any of the parts Van's supplies in the slider kits for planes such as the RV8, 9, etc. will work for the RV3. I'm thinking of things like the: 1) rolling slider on the front of the canopy 2) windscreen/longeron attach bracket 3) canopy latch system thanks for any advise, Rick Fogerson, RV3 finish kit Boise, ID ________________________________ Message 25 ____________________________________ Time: 12:26:25 PM PST US From: "Dr. Leathers" Subject: Re: RV-List: Free speed --> RV-List message posted by: "Dr. Leathers" Here Here!!! Do not archive ----- Original Message ----- From: "Jim Norman" Subject: RE: RV-List: Free speed > --> RV-List message posted by: "Jim Norman" > > Careful everybody... > LOTS of physics, aerodynamics, etc, etc at play here. There is very little > free in life, and this may be the case here as well. Remember, the chance of > sucking exhaust fumes into the cabin may be as high as getting air OUT. > > ALSO, as a physics major (back when Bernoulli was alive), I have to tell you > that it is impossible to equalize pressure inside and outside the cabin. The > differences in air speed (slow inside the plane and fast outside) dictates > that there will ALWAYS be a pressure difference. > > So... "danger Will Robinson!"... go slow partner. > > jim > Tampa > > -----Original Message----- > From: owner-rv-list-server@matronics.com > [mailto:owner-rv-list-server@matronics.com]On Behalf Of Scott Bilinski > To: rv-list@matronics.com > Subject: Re: RV-List: Free speed > > > --> RV-List message posted by: Scott Bilinski > > > > So what I am hearing is, place a NACA scoop on the inside belly of the > plane facing backwards so it pulls air out. Is this correct? > > > At 12:10 PM 3/3/03 -0500, you wrote: > >--> RV-List message posted by: LeastDrag93066@aol.com > > > >Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph > >increase by mechanically clamping the back of the canopy down to the > >fuselage. (Early issue of the RVator) > >What I read Russ suggesting is an aerodynamic clamp. > >By providing an aerodynamically active outlet for the air pressure under > the > >canopy, it eliminates the slight positive pressure under the canopy > (relative > >to the Bernoulli's pulling the canopy up) and keeps the canopy against the > >fuselage. > > > >Jim Ayers > >RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) > > > >In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, > >bj034@lafn.org writes: > > > >> Russ, > >> > >> I don't think that increasing airflow through the fuselage is going to > >> increase airspeed. However if you have a leak in your static system, > >> lowering the pressure in the fuselage will increase the indicated > airspeed. > >> > >> Dave RV6 So.Cal > >> EAA Technical Counselor > >> > >> > >> Russ Alnutt wrote: > >> > >> > --> RV-List message posted by: "Russ Alnutt" > >> > > >> > I wish to share something with all RVers. I discovered this by > accident. > >> If you put a reverse scoop on the belly of your plane towards the back > you > >> will likely pickup about 5mph. I did this because I thought that the > >> cockpit had to much positive pressure and couldn't get out. I was > partially > >> right. When you let the air out of the back the sliding canopy does not > go > >> our as far and the speed increases. Try it it will only cost you a little > >> time. > >> > > >> > rsalnutt@inreach.com > >> > > >> > > > > > > > Scott Bilinski > Eng dept 305 > Phone (858) 657-2536 > Pager (858) 502-5190 > > ________________________________ Message 26 ____________________________________ Time: 02:13:15 PM PST US From: Mark Phillips Subject: Re: Fw: RV-List: Garmin GPS 35/AnywhereMap feeding a NavAid --> RV-List message posted by: Mark Phillips Pretty much a po' mans glass cockpit, just without the megabux displays. You get a box with SS gyros, an airdata interface and a Garmin 35. You plug serial cables from the Axims to a "Y" adapter cable that plugs into the main box, as does the 35, plus a power feed and cable to Navaid (with the pig thang). One PDA does the ADAHARS, FD, HITS and whatever other acronyms the software will support, the other the GPS display. About the same system that Control Vision is selling, but this will give actual (not just GPS) airspeed, altitude etc. Bear in mind I am NOT going IFR with this, and have backup altimeter, & A/S. I've talked to several "happy customers", seen the demo at OSH and am looking forward to playing with it. Only gyro in the panel is Navaid. Craig assures me the correct data will somehow arrive there for WL operation. However, I did finally take the Axim out in the sun today (first chance in weeks as you know!) and understand why the "real" displays are megabux. They look great with the sun shining on them from over your shoulder, but get pretty dim on angles or in shade, but still readable if you look at it hard enough. I compared it against a 3800 series iPaq and the screens appear identical. Have you had any real trouble reading yours under various conditions? From The PossumWorks north of AL Mark Sam Buchanan wrote: > --> RV-List message posted by: Sam Buchanan > > Mark Phillips wrote: > > > > --> RV-List message posted by: Mark Phillips > > > > Hi Sam! > > > > The Dell Axim is now available with serial cable- Craig at PCFlightSystems is > > currently building one of their ADAHARS systems with GPS moving map to feed > > two Axims. Won't have any air experience for a while yet, 8-( but it > > will be test-flown in my truck soon 8-) for some basic evaluation and > > familiarization! > > > > http://www.pcflightsystems.com/pcefis.html > > > > >From The PossumWorks in TN > > Mark > > Well......ok......you have our curiosity aroused.......tell us more! > =8 > O > > Just what are you sending to the "two Axims"? > > And, how does the serial cable work (what kind of connectors, etc)? > > Sounds like things are getting interesting in the Skunkworks. :-) > > Sam Buchanan > ________________________________ Message 27 ____________________________________ Time: 02:20:10 PM PST US From: Garry LeGare Subject: Re: RV-List: Free speed --> RV-List message posted by: Garry LeGare Hi Russ, If you look through the archives under keeping warm, cabin venting or cabin heat you should find a thread that covers previous work done by Bob Japundza and myself. One caution I must pass on, about cutting holes, on the underside of the fuselage. Under certain conditions you can get reverse flow and with it exhaust gas. With a normal RV6 there is so much leakage that you may not notice, unless you have a very sensitive CO detector. Once you start sealing up all the air leaks the percentage of CO starts to become a serious problem. Anyone considering doing something to reduce the cabin/tail pressure should be very careful when considering this approach. Casper Russ Alnutt wrote: > --> RV-List message posted by: "Russ Alnutt" > > I wish to share something with all RVers. I discovered this by accident. If you put a reverse scoop on the belly of your plane towards the back you will likely pickup about 5mph. I did this because I thought that the cockpit had to much positive pressure and couldn't get out. I was partially right. When you let the air out of the back the sliding canopy does not go our as far and the speed increases. Try it it will only cost you a little time. > > rsalnutt@inreach.com > ________________________________ Message 28 ____________________________________ Time: 03:19:36 PM PST US From: "Ron Rosenberg" Subject: RV-List: RV3 Canopy --> RV-List message posted by: "Ron Rosenberg" Listers: I'm flying an RV3 with a tip-over canopy. I'm not the builder. I'd like to investigate what it will take to fabricate/install/purchase a slider. Anyone have any info on the slider for the 3?? Ron Rosenberg, PA, MPH Practice Management Resource Group 325 Pine St., Sausalito, CA 94965 Sausalito Office -(415)925-4334 Chicago Office - (312) 543-5480 www.medicalpmrg.com ________________________________ Message 29 ____________________________________ Time: 03:46:20 PM PST US From: "van Bladeren, Ron" Subject: RE: RV-List: Free speed --> RV-List message posted by: "van Bladeren, Ron" FWIW, I know of at least one line of production A/C, the Comanche and Twin Comanche, that use a reverse facing scope on the belly specifically to vent cabin air. We would find that cabin airflow would be reduced significantly if one covered the 3" baggage floor hole leading to this vent with bags or coats. The Comanche Flyer recommended checking to be sure this vent was free from obstructions because a high rate of airflow through the cabin was the best protection from exhaust fumes or (heaven forbid) fumes from an electrical fire. Ron. -----Original Message----- From: Jim Norman [mailto:jgnorman@tampabay.rr.com] Subject: RE: RV-List: Free speed --> RV-List message posted by: "Jim Norman" Careful everybody... LOTS of physics, aerodynamics, etc, etc at play here. There is very little free in life, and this may be the case here as well. Remember, the chance of sucking exhaust fumes into the cabin may be as high as getting air OUT. ALSO, as a physics major (back when Bernoulli was alive), I have to tell you that it is impossible to equalize pressure inside and outside the cabin. The differences in air speed (slow inside the plane and fast outside) dictates that there will ALWAYS be a pressure difference. So... "danger Will Robinson!"... go slow partner. jim Tampa -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com]On Behalf Of Scott Bilinski Subject: Re: RV-List: Free speed --> RV-List message posted by: Scott Bilinski So what I am hearing is, place a NACA scoop on the inside belly of the plane facing backwards so it pulls air out. Is this correct? At 12:10 PM 3/3/03 -0500, you wrote: >--> RV-List message posted by: LeastDrag93066@aol.com > >Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph >increase by mechanically clamping the back of the canopy down to the >fuselage. (Early issue of the RVator) >What I read Russ suggesting is an aerodynamic clamp. >By providing an aerodynamically active outlet for the air pressure under the >canopy, it eliminates the slight positive pressure under the canopy (relative >to the Bernoulli's pulling the canopy up) and keeps the canopy against the >fuselage. > >Jim Ayers >RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) > >In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, >bj034@lafn.org writes: > >> Russ, >> >> I don't think that increasing airflow through the fuselage is going to >> increase airspeed. However if you have a leak in your static system, >> lowering the pressure in the fuselage will increase the indicated airspeed. >> >> Dave RV6 So.Cal >> EAA Technical Counselor >> >> >> Russ Alnutt wrote: >> >> > --> RV-List message posted by: "Russ Alnutt" >> > >> > I wish to share something with all RVers. I discovered this by accident. >> If you put a reverse scoop on the belly of your plane towards the back you >> will likely pickup about 5mph. I did this because I thought that the >> cockpit had to much positive pressure and couldn't get out. I was partially >> right. When you let the air out of the back the sliding canopy does not go >> our as far and the speed increases. Try it it will only cost you a little >> time. >> > >> > rsalnutt@inreach.com >> > >> > > Scott Bilinski Eng dept 305 Phone (858) 657-2536 Pager (858) 502-5190 ________________________________ Message 30 ____________________________________ Time: 03:55:10 PM PST US From: Bill Dube Subject: RE: RV-List: Odyssey Battery (best source these days) --> RV-List message posted by: Bill Dube At 09:58 AM 3/3/2003, you wrote: >--> RV-List message posted by: "James E. Clark" The SVR batteries I mentioned on the list awhile back are superior to both the Odyssey and the Panasonic batteries in cranking ability. http://www.svrbatteries.com/download.html# Model Cold Cranking Amps Amp-hrs weight (lbs) Max amps SVR-14 250 CCA 14 11.5 850 SVR-20 300 CCA 18 15 SVR-18 350 CCA 22 17 PC-680 280 CCA 16 14 680 Electric drag racers, like myself, search for batteries that will put out THE most power per pound. The SVR-14 will put out more than 850 amps without sagging below 7 volts. The Battle Bot competitors use this brand of battery too. You can get them at a very reasonable price from . They are cheaper, from this source, than the PC-680. The CCA test is based on delivering the CCA at zero F for 30 seconds without sagging below 7.2 volts. In reality, a healthy engine takes less than 5 seconds to start, even in cold weather. If you think about it, the "pulse" amps are more important than the CCA because if you can deliver higher voltage in the beginning, you don't need to crank the engine for very long. With a given starter amperage load, the SVR-14 is going to deliver more voltage, will thus spin the starter faster and start it quicker than the PC-680. If anyone in the Denver area would like to try out an SVR-14, I'd be happy to lend them one for a comparison test, as long as I get it back. _ /| Bill "Wisenheimer" Dube' \'o.O' =(___) U Check out the bike -> http://www.KillaCycle.com ________________________________ Message 31 ____________________________________ Time: 03:55:51 PM PST US From: Jim Oke Subject: Re: RV-List: Free speed --> RV-List message posted by: Jim Oke Sound advice about the lack of a "free lunch" (or airspeed in this case). In principle, yes, there will always be reduced pressure outside the canopy/fuselage compared to inside. If a canopy air leak is present, the leaking "high pressure" air could in theory disrupt the flow in the canopy area causing flow separation and a corresponding drag increase. Glider pilots go to some lengths in sealing their canopies for this reason and also often seal aileron and elevator hinge gaps to avoid lower surface to upper surface (high to low) pressure air leakage. Having said this, an RV-6 canopy will be subjected to a highly turbulent, swirling flow from the propeller and it is hard to imagine a canopy air leak big enough to compete with this sort of flow and cause an unusual flow separation. The question is if there is an area of separated flow around an RV-6 canopy that can be shown to be caused by air leaking out past the edges of the canopy. If yes, then the trade off to consider is if the drag caused by an additional air inlet in the fuselage underside is greater or lesser than the drag resulting from the flow separation caused by the leaking air. That would be the "lunch deal" that is actually on offer. Can anyone else report on the "before vs. after" results of sealing an RV canopy? A 5 mph increase in cruise speed would represent a fair bit of drag reduction in horsepower terms. Jim Oke RV-6A (at the airport, but still too $% & cold for an engine run) Winnipeg, MB ----- Original Message ----- From: "Jim Norman" Subject: RE: RV-List: Free speed > --> RV-List message posted by: "Jim Norman" > > Careful everybody... > LOTS of physics, aerodynamics, etc, etc at play here. There is very little > free in life, and this may be the case here as well. Remember, the chance of > sucking exhaust fumes into the cabin may be as high as getting air OUT. > > ALSO, as a physics major (back when Bernoulli was alive), I have to tell you > that it is impossible to equalize pressure inside and outside the cabin. The > differences in air speed (slow inside the plane and fast outside) dictates > that there will ALWAYS be a pressure difference. > > So... "danger Will Robinson!"... go slow partner. > > jim > Tampa > > -----Original Message----- > From: owner-rv-list-server@matronics.com > [mailto:owner-rv-list-server@matronics.com]On Behalf Of Scott Bilinski > To: rv-list@matronics.com > Subject: Re: RV-List: Free speed > > > --> RV-List message posted by: Scott Bilinski > > > > So what I am hearing is, place a NACA scoop on the inside belly of the > plane facing backwards so it pulls air out. Is this correct? > > > At 12:10 PM 3/3/03 -0500, you wrote: > >--> RV-List message posted by: LeastDrag93066@aol.com > > > >Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph > >increase by mechanically clamping the back of the canopy down to the > >fuselage. (Early issue of the RVator) > >What I read Russ suggesting is an aerodynamic clamp. > >By providing an aerodynamically active outlet for the air pressure under > the > >canopy, it eliminates the slight positive pressure under the canopy > (relative > >to the Bernoulli's pulling the canopy up) and keeps the canopy against the > >fuselage. > > > >Jim Ayers > >RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) > > > >In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, > >bj034@lafn.org writes: > > > >> Russ, > >> > >> I don't think that increasing airflow through the fuselage is going to > >> increase airspeed. However if you have a leak in your static system, > >> lowering the pressure in the fuselage will increase the indicated > airspeed. > >> > >> Dave RV6 So.Cal > >> EAA Technical Counselor > >> > >> > >> Russ Alnutt wrote: > >> > >> > --> RV-List message posted by: "Russ Alnutt" > >> > > >> > I wish to share something with all RVers. I discovered this by > accident. > >> If you put a reverse scoop on the belly of your plane towards the back > you > >> will likely pickup about 5mph. I did this because I thought that the > >> cockpit had to much positive pressure and couldn't get out. I was > partially > >> right. When you let the air out of the back the sliding canopy does not > go > >> our as far and the speed increases. Try it it will only cost you a little > >> time. > >> > > >> > rsalnutt@inreach.com > >> > > >> > > > > > > > Scott Bilinski > Eng dept 305 > Phone (858) 657-2536 > Pager (858) 502-5190 > > ________________________________ Message 32 ____________________________________ Time: 04:07:13 PM PST US From: Jim Oke Subject: Re: RV-List: RV3 Canopy --> RV-List message posted by: Jim Oke Ron; The best idea might be to seek out an older set of RV-3 plans as these will shown the original sliding canopy configuration going back to 1975 or so. Perhaps Van's can supply the few sheets of drawings or you could borrow same from another RV-3 builder or flyer. In principle, I would say a slider retrofit should be possible but with some significant work in the cockpit area. One caution is that the older RV-3 kits had much less prefab and almost none of the pre-made parts that RV builders are used to today. My "canopy kit" circa 1988 was a bundle of 4130 tube and the canopy plexi and literally nothing else except the drawings. Do not expect to find a lot of "off the shelf" stuff if you decide to go this route. Jim Oke Winnipeg, MB RV-3 C-FIZM (flying) RV-6A C-GKGZ (final details) ----- Original Message ----- From: "Ron Rosenberg" Subject: RV-List: RV3 Canopy > --> RV-List message posted by: "Ron Rosenberg" > > Listers: > > I'm flying an RV3 with a tip-over canopy. I'm not the builder. I'd like to > investigate what it will take to fabricate/install/purchase a slider. > Anyone have any info on the slider for the 3?? > > Ron Rosenberg, PA, MPH > Practice Management Resource Group > 325 Pine St., Sausalito, CA 94965 > Sausalito Office -(415)925-4334 > Chicago Office - (312) 543-5480 > www.medicalpmrg.com > > ________________________________ Message 33 ____________________________________ Time: 04:12:02 PM PST US From: Bill Dube Subject: RE: RV-List: Free speed --> RV-List message posted by: Bill Dube Did you check the speed increase with a GPS, or did you rely on the air speed indicator? It is possible that the reduction in cabin pressure is altering the static pressure on the air speed indicator causing it to read a bit high. If the static system is incorrectly installed or is a bit leaky, this can occur. Just a thought. ________________________________ Message 34 ____________________________________ Time: 04:28:07 PM PST US From: Bill Marvel Subject: Re: RV-List: Free speed --> RV-List message posted by: Bill Marvel Wish my -8A had the problem of pressurized air in the cockpit trying to get out instead of the torrent of outside air coming in under the aft part of the skirt and blowing forward. I cook in the front with the heat on and the back seater freezes because of the air flowing in from the rear. Just starting to address this, so hopefully something will be in the archives about it. Bill Marvel DO NOT ARCHIVE -- Bill Marvel Home/office 310 832 7617 P.O. Box 784 Cell 310 293 2013 San Pedro, CA 90733 Fax 310 832 5334 One good deed beats 100 good intentions... ________________________________ Message 35 ____________________________________ Time: 04:41:30 PM PST US From: Gert Subject: Re: RV-List: Free speed --> RV-List message posted by: Gert Sooo, proof would be in the pudding so to say if one looses the speed gain again if one were to duct-tape the belly hole over, or make an adjustable sliding cover...... Gert Jim Oke wrote: > --> RV-List message posted by: Jim Oke > > Sound advice about the lack of a "free lunch" (or airspeed in this case). > > In principle, yes, there will always be reduced pressure outside the > canopy/fuselage compared to inside. If a canopy air leak is present, the > leaking "high pressure" air could in theory disrupt the flow in the canopy > area causing flow separation and a corresponding drag increase. Glider > pilots go to some lengths in sealing their canopies for this reason and also > often seal aileron and elevator hinge gaps to avoid lower surface to upper > surface (high to low) pressure air leakage. > > Having said this, an RV-6 canopy will be subjected to a highly turbulent, > swirling flow from the propeller and it is hard to imagine a canopy air leak > big enough to compete with this sort of flow and cause an unusual flow > separation. > > The question is if there is an area of separated flow around an RV-6 canopy > that can be shown to be caused by air leaking out past the edges of the > canopy. If yes, then the trade off to consider is if the drag caused by an > additional air inlet in the fuselage underside is greater or lesser than the > drag resulting from the flow separation caused by the leaking air. That > would be the "lunch deal" that is actually on offer. > > Can anyone else report on the "before vs. after" results of sealing an RV > canopy? A 5 mph increase in cruise speed would represent a fair bit of drag > reduction in horsepower terms. > > Jim Oke > RV-6A (at the airport, but still too $% > & cold for an engine run) > Winnipeg, MB > > > ----- Original Message ----- > From: "Jim Norman" > To: > Subject: RE: RV-List: Free speed > > > >>--> RV-List message posted by: "Jim Norman" >> >>Careful everybody... >>LOTS of physics, aerodynamics, etc, etc at play here. There is very little >>free in life, and this may be the case here as well. Remember, the chance >> > of > >>sucking exhaust fumes into the cabin may be as high as getting air OUT. >> >>ALSO, as a physics major (back when Bernoulli was alive), I have to tell >> > you > >>that it is impossible to equalize pressure inside and outside the cabin. >> > The > >>differences in air speed (slow inside the plane and fast outside) dictates >>that there will ALWAYS be a pressure difference. >> >>So... "danger Will Robinson!"... go slow partner. >> >>jim >>Tampa >> >>-----Original Message----- >>From: owner-rv-list-server@matronics.com >>[mailto:owner-rv-list-server@matronics.com]On Behalf Of Scott Bilinski >>To: rv-list@matronics.com >>Subject: Re: RV-List: Free speed >> >> >>--> RV-List message posted by: Scott Bilinski >> >> >> >>So what I am hearing is, place a NACA scoop on the inside belly of the >>plane facing backwards so it pulls air out. Is this correct? >> >> >>At 12:10 PM 3/3/03 -0500, you wrote: >> >>>--> RV-List message posted by: LeastDrag93066@aol.com >>> >>>Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph >>>increase by mechanically clamping the back of the canopy down to the >>>fuselage. (Early issue of the RVator) >>>What I read Russ suggesting is an aerodynamic clamp. >>>By providing an aerodynamically active outlet for the air pressure under >>> >>the >> >>>canopy, it eliminates the slight positive pressure under the canopy >>> >>(relative >> >>>to the Bernoulli's pulling the canopy up) and keeps the canopy against >>> > the > >>>fuselage. >>> >>>Jim Ayers >>>RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) >>> >>>In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, >>>bj034@lafn.org writes: >>> >>> >>>>Russ, >>>> >>>>I don't think that increasing airflow through the fuselage is going to >>>>increase airspeed. However if you have a leak in your static system, >>>>lowering the pressure in the fuselage will increase the indicated >>>> >>airspeed. >> >>>>Dave RV6 So.Cal >>>>EAA Technical Counselor >>>> >>>> >>>>Russ Alnutt wrote: >>>> >>>> >>>>>--> RV-List message posted by: "Russ Alnutt" >>>>> >>>>>I wish to share something with all RVers. I discovered this by >>>>> >>accident. >> >>>>If you put a reverse scoop on the belly of your plane towards the back >>>> >>you >> >>>>will likely pickup about 5mph. I did this because I thought that the >>>>cockpit had to much positive pressure and couldn't get out. I was >>>> >>partially >> >>>>right. When you let the air out of the back the sliding canopy does not >>>> >>go >> >>>>our as far and the speed increases. Try it it will only cost you a >>>> > little > >>>>time. >>>> >>>>>rsalnutt@inreach.com >>>>> >>>>> >>> >> >>Scott Bilinski >>Eng dept 305 >>Phone (858) 657-2536 >>Pager (858) 502-5190 >> >> >> > > > > > > > > -- is subject to a download and archival fee in the amount of $500 ________________________________ Message 36 ____________________________________ Time: 04:44:01 PM PST US From: "Larry Bowen" Subject: RV-List: Flap template? --> RV-List message posted by: "Larry Bowen" Does anyone have a template for cutting the RV-8 flap to fit up against the fuse? - Larry Bowen Larry@BowenAero.com http://BowenAero.com 2003 - The year of flight! ________________________________ Message 37 ____________________________________ Time: 05:07:13 PM PST US From: "John Huft" Subject: RE: RV-List: Cedar Key, Fl --> RV-List message posted by: "John Huft" I have stayed there several times, at the Dockside Motel, and Sawgrass Motel (next door). Either one is good, and pretty cheap, the Cedar Key web page has phone numbers. Ollie is correct about the cab...it will be waiting when you land, but it will cost you. If you don't have luggage, it is only about a 2 mile walk to town. The restaurants seem to change every year. I enjoy going there on the way home from sun n fun...it is very laid back, a different universe from the flyin. John Huft Pagosa Springs, CO -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com]On Behalf Of Ollie Washburn Subject: Re: RV-List: Cedar Key, Fl --> RV-List message posted by: "Ollie Washburn" I have only been to Cedar Key a couple of times even though i only live about 20mins.away in RV so don't know about accommodations except they have several resturants.HOWEVER the taxi ride to town is $5 PER person and $5 PER person back to airport. Ollie 6A Central Fl. ----- Original Message ----- From: Lenleg@aol.com Subject: RV-List: Cedar Key, Fl --> RV-List message posted by: Lenleg@aol.com We have several RVs making a trip to the Keys in May with a night over in Cedar Key ... has been a while since I stayed there ... do any of you Florida guys have suggestions for hotels, bed & breakfast, restaurants? Thanks !! Len Leggette RV-8A N901LL Greensboro, N.C. 57 hours !! ________________________________ Message 38 ____________________________________ Time: 05:15:19 PM PST US From: Sam Buchanan Subject: Re: Fw: RV-List: Garmin GPS 35/AnywhereMap feeding a NavAid --> RV-List message posted by: Sam Buchanan Mark Phillips wrote: > > --> RV-List message posted by: Mark Phillips > > Pretty much a po' mans glass cockpit, just without the megabux displays. You get a > box with SS gyros, an airdata interface and a Garmin 35. You plug serial cables > from the Axims to a "Y" adapter cable that plugs into the main box, as does the > 35, plus a power feed and cable to Navaid (with the pig thang). One PDA does the > ADAHARS, FD, HITS and whatever other acronyms the software will support, the other > the GPS display. About the same system that Control Vision is selling, but this > will give actual (not just GPS) airspeed, altitude etc. Bear in mind I am NOT > going IFR with this, and have backup altimeter, & A/S. I've talked to several > "happy customers", seen the demo at OSH and am looking forward to playing with it. > Only gyro in the panel is Navaid. Craig assures me the correct data will somehow > arrive there for WL operation. > > However, I did finally take the Axim out in the sun today (first chance in weeks as > you know!) and understand why the "real" displays are megabux. They look great > with the sun shining on them from over your shoulder, but get pretty dim on angles > or in shade, but still readable if you look at it hard enough. I compared it > against a 3800 series iPaq and the screens appear identical. Have you had any real > trouble reading yours under various conditions? > > >From The PossumWorks north of AL > Mark Mark, glad to hear you got your shop back on the wheels after that wind storm...... ;-) Interesting. I looked at the PCFlight thang at the Big Show last summer but kinda wrote it off since AnywhereMap seemed a lot more sofisti......soffista........purty. However, I thank we are gonna see more 'n more stuff that will drive the PDA's, and some of it is gonna be real good. I have always been able to read the 3765 iPAQ screen, but some light conditions are better than others. You know how the air gits real green right agin a big thunderstorm? It shows up real good then........ Better let you go......one of the cars fell off the blocks last night.......probably got knocked off when those stupid dogs started fightin'......or whatever it is they do when they git all stirred up. Sam Buchanan ________________________________ Message 39 ____________________________________ Time: 05:31:10 PM PST US From: Jerry Springer Subject: Re: RV-List: Air-Data Computer --> RV-List message posted by: Jerry Springer What are you building Richard. Looks like just plain old spam to me. I could be wrong. Jerry do not archive --------------------- richard soennichsen wrote: > --> RV-List message posted by: richard soennichsen > > > Hey all, > > A buddy turned me onto this (the creators presented at the local EAA meeting), a Hell of a value in flight computers. Check it out: > > www.fdatasystems.com > > > Richard > > > > > > > ________________________________ Message 40 ____________________________________ Time: 05:58:27 PM PST US From: Jerry Springer Subject: Re: RV-List: Free speed --> RV-List message posted by: Jerry Springer Pretty soon my old RV-6 is going to be as fast as a Harmon Rocket. I am getting ready to change the wheel pants, that well give me 6 mph and now the reverse air scoop another 5 mph there is 11 mph free airspeed gain. Yah right!!!! Jerry do not archive HCRV6@aol.com wrote: > --> RV-List message posted by: HCRV6@aol.com > > In a message dated 3/2/03 7:43:21 PM Pacific Standard Time, > rsalnutt@inreach.com writes: > > << I wish to share something with all RVers. I discovered this by accident. > If you put a reverse scoop on the belly of your plane towards the back you > will likely pickup about 5mph. >> > > How about a little more information, like where exactly and what size scoop. > Was this a NASA type air scoop? It seems to me that these details could be > very relevant to the performance gain you are seeing. Thanks. > > Harry Crosby > Pleasanton, California > RV-6, firewall forward > > > > > > > ________________________________ Message 41 ____________________________________ Time: 06:48:34 PM PST US From: RGray67968@aol.com Subject: RV-List: Prop Tape --> RV-List message posted by: RGray67968@aol.com For the archives: Folks, Did a little test today: I put the Prop Guard leading edge tape on my Warnke prop and took some performance numbers - nothing real serious as far as data goes but enough to convince me. All numbers are from 3000' in super calm 28 deg.F air at the same heading. Plane is a RV6 w/O-360 and a Warnke ACS Air Claw prop. Me and my son (the scribe) on board w/half tanks. Plane weighs 1038lbs. BEFORE leading edge tape installed - 2400rpm = 193 mph IAS, 2500 rpm = 202 mph IAS, 2700 rpm = 212 mph IAS (full throttle). Climb - ~1800 fpm at 130 mph IAS from 3000' to 5000' (error on the low side). AFTER leading edge tape installed - 2400rpm = 181 mph IAS, 2500 rpm - 189 mph IAS, 2700 rpm = 200 mph IAS (would rev an additional 150 rpm to about 2850 at full throttle). Climb - ~1300 fpm at 130 mph IAS from 3000' to 5000' (error on the high side). Guess what - I took the tape off! Rick Gray RV6 146 hrs in Ohio at the Buffalo Farm - BOTH hands are in the air for Sun & Fun - see ya' there. please archive ________________________________ Message 42 ____________________________________ Time: 07:02:42 PM PST US From: "Charles Rowbotham" Subject: Re: RV-List: Prop Tape --> RV-List message posted by: "Charles Rowbotham" Rick, We did not see the performance loss you experienced, but are using a c/s prop. Even if we did see the same loss we would not remove the tape. We have not had any nicks or erosion that other users experienced. As most of you are aware the cost of rplacing/repairing a c/s prop is high. Prop Guard is highly recommended, unless you can afford to replace/repair your prop. A note our airport is in pretty good shape but alittle sand is always around and you'd be surprised the nicks you pick up from pebbles. Chuck & Dave Rowbotham RV-8A Westerly, RI >From: RGray67968@aol.com >Reply-To: rv-list@matronics.com >To: rv-list@matronics.com >Subject: RV-List: Prop Tape >Date: Mon, 3 Mar 2003 21:45:06 EST > >--> RV-List message posted by: RGray67968@aol.com > >For the archives: > >Folks, > Did a little test today: I put the Prop Guard leading edge tape on >my >Warnke prop and took some performance numbers - nothing real serious as far >as data goes but enough to convince me. All numbers are from 3000' in super >calm 28 deg.F air at the same heading. > >Plane is a RV6 w/O-360 and a Warnke ACS Air Claw prop. Me and my son (the >scribe) on board w/half tanks. Plane weighs 1038lbs. > >BEFORE leading edge tape installed - 2400rpm = 193 mph IAS, 2500 rpm = 202 >mph IAS, 2700 rpm = 212 mph IAS (full throttle). Climb - ~1800 fpm at 130 >mph IAS from 3000' to 5000' (error on the low side). > > >AFTER leading edge tape installed - 2400rpm = 181 mph IAS, 2500 rpm - 189 >mph >IAS, 2700 rpm = 200 mph IAS (would rev an additional 150 rpm to about 2850 >at >full throttle). Climb - ~1300 fpm at 130 mph IAS from 3000' to 5000' >(error >on the high side). > >Guess what - I took the tape off! > >Rick Gray RV6 146 hrs in Ohio at the Buffalo Farm - BOTH hands are in the >air >for Sun & Fun - see ya' there. > >please archive > > ________________________________ Message 43 ____________________________________ Time: 07:50:43 PM PST US From: "Jim Jewell" Subject: RV-List: Dynon developments- EFIS-D10 --> RV-List message posted by: "Jim Jewell" I have seen no mention today of the long awaited EFIS D-10 Today is the third of march. The day that Dynon developments is acepting orders for their EFIS unit. I talked to Nick this morning and he sounded pleased with the number of orders that they had recieved by 10:00 am. I ordered mine and hope to hear it will be shipped soon. I think the wait will prove to be wothwhile. Have any others on the list ordered theirs? Jim in Kelowna - control panel planning and some primary wiring. ________________________________ Message 44 ____________________________________ Time: 08:06:36 PM PST US From: LeastDrag93066@aol.com Subject: Re: RV-List: Free speed --> RV-List message posted by: LeastDrag93066@aol.com Jerry VanGrunsven flew a fixed ground distance (marked with multiple passes), and recorded the time to determine the speed of his aircraft. It's all in the early RVator in which he wrote the article. By retaining the rear of the RV-3 sliding canopy, he gained 5 mph average ground speed. BTW, regardless of which RV you have, specifically where is your cockpit air outlet? :-) Jim Ayers ________________________________ Message 45 ____________________________________ Time: 08:24:13 PM PST US From: "Noel & Yoshie Simmons" Subject: RE: RV-List: Dynon developments- EFIS-D10 --> RV-List message posted by: "Noel & Yoshie Simmons" I ordered one today too. Really looking forward to it. Noel and Yoshie Simmons Blue Sky Aviation, Inc. "We do builder assistance!" Toll Free: 866-859-0390 info@blueskyaviation.net www.blueskyaviation.net -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com]On Behalf Of Jim Jewell Subject: RV-List: Dynon developments- EFIS-D10 --> RV-List message posted by: "Jim Jewell" I have seen no mention today of the long awaited EFIS D-10 Today is the third of march. The day that Dynon developments is acepting orders for their EFIS unit. I talked to Nick this morning and he sounded pleased with the number of orders that they had recieved by 10:00 am. I ordered mine and hope to hear it will be shipped soon. I think the wait will prove to be wothwhile. Have any others on the list ordered theirs? Jim in Kelowna - control panel planning and some primary wiring. ________________________________ Message 46 ____________________________________ Time: 08:44:22 PM PST US From: Jim Oke Subject: Re: RV-List: Free speed --> RV-List message posted by: Jim Oke Yes, that would about do it. Now all we need is a volunteer to cut the hole in his RV to try the experiment! (Well, maybe a flight with some tape around the canopy edge would do as well. Taping one's canopy shut will obviously be not good for emergency egress so this should not be done without suitable forethought. Taping a strip of lightweight paper over the gap that would tear if needed is one possibility.) Jim Oke Winnipeg, MB RV-3 RV-6A Do Not Archive ----- Original Message ----- From: "Gert" Subject: Re: RV-List: Free speed > --> RV-List message posted by: Gert > > Sooo, proof would be in the pudding so to say if one looses the speed > gain again if one were to duct-tape the belly hole over, or make an > adjustable sliding cover...... > > Gert > > Jim Oke wrote: > > > --> RV-List message posted by: Jim Oke > > > > Sound advice about the lack of a "free lunch" (or airspeed in this case). > > > > In principle, yes, there will always be reduced pressure outside the > > canopy/fuselage compared to inside. If a canopy air leak is present, the > > leaking "high pressure" air could in theory disrupt the flow in the canopy > > area causing flow separation and a corresponding drag increase. Glider > > pilots go to some lengths in sealing their canopies for this reason and also > > often seal aileron and elevator hinge gaps to avoid lower surface to upper > > surface (high to low) pressure air leakage. > > > > Having said this, an RV-6 canopy will be subjected to a highly turbulent, > > swirling flow from the propeller and it is hard to imagine a canopy air leak > > big enough to compete with this sort of flow and cause an unusual flow > > separation. > > > > The question is if there is an area of separated flow around an RV-6 canopy > > that can be shown to be caused by air leaking out past the edges of the > > canopy. If yes, then the trade off to consider is if the drag caused by an > > additional air inlet in the fuselage underside is greater or lesser than the > > drag resulting from the flow separation caused by the leaking air. That > > would be the "lunch deal" that is actually on offer. > > > > Can anyone else report on the "before vs. after" results of sealing an RV > > canopy? A 5 mph increase in cruise speed would represent a fair bit of drag > > reduction in horsepower terms. > > > > Jim Oke > > RV-6A (at the airport, but still too $% > > & cold for an engine run) > > Winnipeg, MB > > > > > > ----- Original Message ----- > > From: "Jim Norman" > > To: > > Subject: RE: RV-List: Free speed > > > > > > > >>--> RV-List message posted by: "Jim Norman" > >> > >>Careful everybody... > >>LOTS of physics, aerodynamics, etc, etc at play here. There is very little > >>free in life, and this may be the case here as well. Remember, the chance > >> > > of > > > >>sucking exhaust fumes into the cabin may be as high as getting air OUT. > >> > >>ALSO, as a physics major (back when Bernoulli was alive), I have to tell > >> > > you > > > >>that it is impossible to equalize pressure inside and outside the cabin. > >> > > The > > > >>differences in air speed (slow inside the plane and fast outside) dictates > >>that there will ALWAYS be a pressure difference. > >> > >>So... "danger Will Robinson!"... go slow partner. > >> > >>jim > >>Tampa > >> > >>-----Original Message----- > >>From: owner-rv-list-server@matronics.com > >>[mailto:owner-rv-list-server@matronics.com]On Behalf Of Scott Bilinski > >>To: rv-list@matronics.com > >>Subject: Re: RV-List: Free speed > >> > >> > >>--> RV-List message posted by: Scott Bilinski > >> > >> > >> > >>So what I am hearing is, place a NACA scoop on the inside belly of the > >>plane facing backwards so it pulls air out. Is this correct? > >> > >> > >>At 12:10 PM 3/3/03 -0500, you wrote: > >> > >>>--> RV-List message posted by: LeastDrag93066@aol.com > >>> > >>>Jerry VanGrunsven's initial flight test data on his RV-3 stated a 5 mph > >>>increase by mechanically clamping the back of the canopy down to the > >>>fuselage. (Early issue of the RVator) > >>>What I read Russ suggesting is an aerodynamic clamp. > >>>By providing an aerodynamically active outlet for the air pressure under > >>> > >>the > >> > >>>canopy, it eliminates the slight positive pressure under the canopy > >>> > >>(relative > >> > >>>to the Bernoulli's pulling the canopy up) and keeps the canopy against > >>> > > the > > > >>>fuselage. > >>> > >>>Jim Ayers > >>>RV-3 N47RV sn50 LOM M332A engine MT electric CS propeller :-) > >>> > >>>In a message dated 03/03/2003 7:54:28 AM Pacific Standard Time, > >>>bj034@lafn.org writes: > >>> > >>> > >>>>Russ, > >>>> > >>>>I don't think that increasing airflow through the fuselage is going to > >>>>increase airspeed. However if you have a leak in your static system, > >>>>lowering the pressure in the fuselage will increase the indicated > >>>> > >>airspeed. > >> > >>>>Dave RV6 So.Cal > >>>>EAA Technical Counselor > >>>> > >>>> > >>>>Russ Alnutt wrote: > >>>> > >>>> > >>>>>--> RV-List message posted by: "Russ Alnutt" > >>>>> > >>>>>I wish to share something with all RVers. I discovered this by > >>>>> > >>accident. > >> > >>>>If you put a reverse scoop on the belly of your plane towards the back > >>>> > >>you > >> > >>>>will likely pickup about 5mph. I did this because I thought that the > >>>>cockpit had to much positive pressure and couldn't get out. I was > >>>> > >>partially > >> > >>>>right. When you let the air out of the back the sliding canopy does not > >>>> > >>go > >> > >>>>our as far and the speed increases. Try it it will only cost you a > >>>> > > little > > > >>>>time. > >>>> > >>>>>rsalnutt@inreach.com > >>>>> > >>>>> > >>> > >> > >>Scott Bilinski > >>Eng dept 305 > >>Phone (858) 657-2536 > >>Pager (858) 502-5190 > >> > >> > >> > > > > > > > > > > > > > > > > > > > -- > is subject to a download and archival fee in the amount of $500 > > ________________________________ Message 47 ____________________________________ Time: 08:52:16 PM PST US From: "Larry Bowen" Subject: RE: RV-List: Dynon developments- EFIS-D10 --> RV-List message posted by: "Larry Bowen" I'm ready to order mine, but was scared to be serial number 00001. Maybe later this week or next. When do you expect to receive yours? - Larry Bowen RV-8 - wires, trimming flaps, etc.... Larry@BowenAero.com http://BowenAero.com 2003 - The year of flight! > -----Original Message----- > From: owner-rv-list-server@matronics.com > [mailto:owner-rv-list-server@matronics.com] On Behalf Of Jim Jewell > Sent: Monday, March 03, 2003 10:51 PM > To: rv-list@matronics.com > Subject: RV-List: Dynon developments- EFIS-D10 > > > --> RV-List message posted by: "Jim Jewell" > > I have seen no mention today of the long awaited EFIS D-10 > Today is the third of march. The day that Dynon developments > is acepting orders for their EFIS unit. I talked to Nick this > morning and he sounded pleased with the number of orders that > they had recieved by 10:00 am. I ordered mine and hope to > hear it will be shipped soon. I think the wait will prove to > be wothwhile. Have any others on the list ordered theirs? > > Jim in Kelowna - control panel planning and some primary wiring.