Kitfox-List Digest Archive

Fri 06/20/08


Total Messages Posted: 14



Today's Message Index:
----------------------
 
     1. 05:07 AM - Re: Much foward stick on climbout (Southern Skies)
     2. 06:59 AM - Re: Comm Antenna Plane - Size? (n85ae)
     3. 08:14 AM - Re: Comm Antenna Plane - Size? (darinh)
     4. 09:03 AM - Re: Re: Much foward stick on climbout (mscotter@comcast.net)
     5. 09:20 AM - Kitfox IV Performance Numbers Help (Kyle)
     6. 10:04 AM - Re: Kitfox IV Performance Numbers Help (RAY Gignac)
     7. 10:36 AM - Re: Re: Comm Antenna Plane - Size? (Noel Loveys)
     8. 11:16 AM - Re: Kitfox IV Performance Numbers Help (Guy Buchanan)
     9. 11:21 AM - Re: Comm Antenna Plane - Size? (n85ae)
    10. 12:15 PM - Re: Re: Kitfox Suber EA81 (2nd message) (mscotter@comcast.net)
    11. 08:47 PM - Flutter of flaperons (James Shumaker)
    12. 08:48 PM - C Box and IVO props (gary.algate@sandvik.com)
    13. 10:07 PM - Re: Kitfox IV Performance Numbers Help (Kyle)
    14. 10:14 PM - Re: C Box and IVO props (Gary Glasgow)
 
 
 


Message 1


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    Time: 05:07:28 AM PST US
    From: Southern Skies <chris@southernskies.net>
    Subject: Re: Much foward stick on climbout
    This Rotax 582 does have the C Box with 3:1. I will look for the Ivo Prop or a 6 lb toolkit ! Great idea! In the meantime, I strapped 6 lbs of steel under the engine mount and that brought everything into the limits. The W&B was done with the BRS installed. There have also been some repairs done to the tailsection from the previous groundloop, perhaps adding a little weight. During yesterdays flight after the CG fix everything went fine with much less forward pressure needed however a brief period of aileron flutter caught my attention, unrelated to the CG as it has happened once before. The first time it was so brief that I thought it was just some turbulence that was messing with me but on yesterdays flight it lasted a little longer and made me nervous as this was on long final, straight and level at 55 knots in smooth air with no or little flaps deployed. Just started shaking the stick left to right- I looked at the flapperons and wing while it was happening and both were visibly moving up and down. Made some S turns and it stopped. The whole episode was short. I very closely inspected every piece of the linkage together with a local A&P after landing and we found a few places that allowed to be snugged up just a little but not anything large. Nothing was real floppy but the ailerons can be moved up and down a bit (maybe 1/2 inch measuring at the trailing edge) before the stick moves. There are a lot of joints so that may be normal. Removed the linkage completely and checked the aileron nylon bushings- seemed o.k.too, not much axial play- but side to side yes. Both ailerons have a few dings and a few areas of loose foam. The external counterweights are installed on the far outboard side. All the rib hangers have the thin metal plates installed but a couple of the hangers move a little side to side when wiggled and a little up and down together with the wing. Where the aileron rod passes through the turtledeck there is not much of a bearing surface. Just some nylon that doesn't provide much support in my opinion. Any ideas what else I should look at? Thanks for any advice- Chris Bowles KF 3 Rotax 582 >Chris >I think you will find that a medium ground adjustable 3 blade Ivo is >pretty close to 12 Lb, with this prop however, you should run a "C" >or "E" reduction unit, probably with a 3 to 1 ratio and follow their >install directions . The A And B reduction boxes are just too light. > >Gary 4276M >582


    Message 2


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    Time: 06:59:37 AM PST US
    Subject: Re: Comm Antenna Plane - Size?
    From: "n85ae" <n85ae@yahoo.com>
    Noel - Well I'm just making the point that reality is that if you simply do a nice clean installation it will work,well. If you screw it up it will not work well. If you install a nice big ground plane, and fine tune the antenna length, consult the RF gods, etc, and do a bunch of incantations, it might possibly make a slightly noticeable difference, or not .... Radio choice makes a big difference as well. I have a Garmin GNC-250XL and a Bendix King KX-155 in mine. The KX-155 definetly is the better radio for Comm. Both my antenna's are the same type, and even if I switch antenna's the King simply out perform's the Garmin. The Garmin is a very GOOD Gps/Comm and I would not get rid of it, but the KX-155 is a better workhorse radio. A friend of mine spent half of last decade trying to get his Microair 760 to get good range, but never got where he was happy with it. Best Regards, Jeff Read this topic online here: http://forums.matronics.com/viewtopic.php?p=188750#188750


    Message 3


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    Time: 08:14:19 AM PST US
    Subject: Re: Comm Antenna Plane - Size?
    From: "darinh" <gerns25@netscape.net>
    michaega(at)verizon.net wrote: > Darin, > > Did you use the standard antenna mounting plate that Kitfox welded on your model 7. I have the exact combo as you describe. So you just mounted directly to the rectangular antenna mount and made adjustments to the A210?? > > George > > > --- George, Yes, sort of. My antenna came with a cork gasket and I didn't want to cut the fabric off the plate if I didn't need to. According to Comant (maker of my antenna), the mounting bolts provide the required ground to the airframe. Mine is working great right now and even inside my hangar (steel building) I get great reception and transmission so it appears to be working. I have yet to fly the airplane so I don't know if I will how far I can receive from, although I can pick up KSLC tower and it is a good 25 miles away (this is also inside my hangar). If you have any issues with your setup, I may be able to help seeing how I have spent the last 2 weeks looking at mine. -------- Darin Hawkes Series 7 (Final Assembly) 914 Turbo Kaysville, Utah Read this topic online here: http://forums.matronics.com/viewtopic.php?p=188761#188761


    Message 4


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    Time: 09:03:31 AM PST US
    Subject: Re: Much foward stick on climbout
    From: mscotter@comcast.net
    Chris, I'm no expert but any play in those hangers mounted on the trailing edge would make me real nervous. I'd start there. Also, make sure the counterweights are not loose either. -Mark Scott, Elkton, Md Sent via BlackBerry by AT&T -----Original Message----- From: Southern Skies <chris@southernskies.net> To:kitfox-list@matronics.com Subject: Kitfox-List: Re: Much foward stick on climbout This Rotax 582 does have the C Box with 3:1. I will look for the Ivo Prop or a 6 lb toolkit ! Great idea! In the meantime, I strapped 6 lbs of steel under the engine mount and that brought everything into the limits. The W&B was done with the BRS installed. There have also been some repairs done to the tailsection from the previous groundloop, perhaps adding a little weight. During yesterdays flight after the CG fix everything went fine with much less forward pressure needed however a brief period of aileron flutter caught my attention, unrelated to the CG as it has happened once before. The first time it was so brief that I thought it was just some turbulence that was messing with me but on yesterdays flight it lasted a little longer and made me nervous as this was on long final, straight and level at 55 knots in smooth air with no or little flaps deployed. Just started shaking the stick left to right- I looked at the flapperons and wing while it was happening and both were visibly moving up and down. Made some S turns and it stopped. The whole episode was short. I very closely inspected every piece of the linkage together with a local A&P after landing and we found a few places that allowed to be snugged up just a little but not anything large. Nothing was real floppy but the ailerons can be moved up and down a bit (maybe 1/2 inch measuring at! the trailing edge) before the stick moves. There are a lot of joints so that may be normal. Removed the linkage completely and checked the aileron nylon bushings- seemed o.k.too, not much axial play- but side to side yes. Both ailerons have a few dings and a few areas of loose foam. The external counterweights are installed on the far outboard side. All the rib hangers have the thin metal plates installed but a couple of the hangers move a little side to side when wiggled and a little up and down together with the wing. Where the aileron rod passes through the turtledeck there is not much of a bearing surface. Just some nylon that doesn't provide much support in my opinion. Any ideas what else I should look at? Thanks for any advice- Chris Bowles KF 3 Rotax 582 >Chris >I think you will find that a medium ground adjustable 3 blade Ivo is >pretty close to 12 Lb, with this prop however, you should run a "C" >or "E" reduction unit, probably with a 3 to 1 ratio and follow their >install directions . The A And B reduction boxes are just too light. > >Gary 4276M >582


    Message 5


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    Time: 09:20:35 AM PST US
    Subject: Kitfox IV Performance Numbers Help
    From: "Kyle" <kylehdunn@bellsouth.net>
    Hello All, I recently acquired my Kitfox IV 1200 w/912 UL. I haven't had it in the air yet. I needed to synchronize the carburetors and bleed the brakes. That done I'm ready to proceed. I'm a private pilot but don't have my TD endorsement yet. I didn't receive any performance numbers from the previous owner. Numbers like stall speeds, take-off speeds, approach to landing speeds, cruise speeds, take-off roll distances, landing roll distances, climb rates or any of the V speeds (Vx, Vy etc.). I was wondering if anyone could forward some of their numbers so at least I might have something just to use as a reference until I can establish my own. I have been taxiing up and down the grass strip, slowly building my speed. I've worked up to flying the tail and letting it settle back down while maintaining good directional control. I've had a Tail Dragger instructor with me some of the time but he also would like to at least see some numbers before we go on with more training. Any help would be appreciated. I understand the numbers would not be specific to my plane, only for reference. Thanks, -------- Kyle Dunn Eddyville, Kentucky Kitfox IV 1200 912 Rotax 1978 Cessna 172 N American Aero Phoenix II w/582 Rotax Rotorway Exec. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=188772#188772


    Message 6


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    Time: 10:04:01 AM PST US
    From: RAY Gignac <kitfoxpilot@msn.com>
    Subject: Kitfox IV Performance Numbers Help
    I don't want to scare you, the Fox is fun to fly but very sensitive on the controls! it is very easy to over correct. Stall around 38, cruise depends 90 to 95 is best but you will se 100 to 115, my approach speed were at 60 no flaps, never use them. I lift off at 45, I find wheel landins work best . Ray> Subject: Kitfox-List: Kitfox IV Performance Numbers Help> From: kylehd unn@bellsouth.net> Date: Fri, 20 Jun 2008 09:18:03 -0700> To: kitfox-list@m uth.net>> > Hello All,> > I recently acquired my Kitfox IV 1200 w/912 UL. I haven't had it in the air yet. I needed to synchronize the carburetors and bleed the brakes. That done I'm ready to proceed. I'm a private pilot but don't have my TD endorsement yet. I didn't receive any performance numbers from the previous owner. Numbers like stall speeds, take-off speeds, approa ch to landing speeds, cruise speeds, take-off roll distances, landing roll distances, climb rates or any of the V speeds (Vx, Vy etc.).> I was wonderi ng if anyone could forward some of their numbers so at least I might have s omething just to use as a reference until I can establish my own. I have be en taxiing up and down the grass strip, slowly building my speed. I've work ed up to flying the tail and letting it settle back down while maintaining good directional control. I've had a Tail Dragger instructor with me some o f the time but he also would like to at least see some numbers before we go on with more training.> Any help would be appreciated. > I understand the numbers would not be specific to my plane, only for reference.> > Thanks,> > --------> Kyle Dunn> Eddyville, Kentucky> Kitfox IV 1200 912 Rotax > 1978 Cessna 172 N> American Aero Phoenix II w/582 Rotax> Rotorway Exec.> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.php ===========> > > _________________________________________________________________ The i=92m Talkathon starts 6/24/08.- For now, give amongst yourselves. http://www.imtalkathon.com?source=TXT_EML_WLH_LearnMore_GiveAmongst


    Message 7


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    Time: 10:36:09 AM PST US
    From: "Noel Loveys" <noelloveys@yahoo.ca>
    Subject: Re: Comm Antenna Plane - Size?
    I don't know about consulting the RF gods but Amen to what you said LOL! Noel -----Original Message----- From: owner-kitfox-list-server@matronics.com [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of n85ae Sent: Friday, June 20, 2008 11:27 AM Subject: Kitfox-List: Re: Comm Antenna Plane - Size? Noel - Well I'm just making the point that reality is that if you simply do a nice clean installation it will work,well. If you screw it up it will not work well. If you install a nice big ground plane, and fine tune the antenna length, consult the RF gods, etc, and do a bunch of incantations, it might possibly make a slightly noticeable difference, or not .... Radio choice makes a big difference as well. I have a Garmin GNC-250XL and a Bendix King KX-155 in mine. The KX-155 definetly is the better radio for Comm. Both my antenna's are the same type, and even if I switch antenna's the King simply out perform's the Garmin. The Garmin is a very GOOD Gps/Comm and I would not get rid of it, but the KX-155 is a better workhorse radio. A friend of mine spent half of last decade trying to get his Microair 760 to get good range, but never got where he was happy with it. Best Regards, Jeff Read this topic online here: http://forums.matronics.com/viewtopic.php?p=188750#188750


    Message 8


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    Time: 11:16:28 AM PST US
    From: Guy Buchanan <bnn@nethere.com>
    Subject: Re: Kitfox IV Performance Numbers Help
    At 09:18 AM 6/20/2008, you wrote: >Numbers like stall speeds, take-off speeds, approach to landing >speeds, cruise speeds, take-off roll distances, landing roll >distances, climb rates or any of the V speeds (Vx, Vy etc.). SPEEDS (MIAS) Vr 45 Vx 53 Vy 57 Vs1 45 1.2 Vs1 54 Vs0 41 1.2 Vs0 49 Vfe 70 Va 85 Vno 99 Vne 125 Vglide 55 (600'/NM) These numbers are all at gross = 1200#. Subtract 5 mph from the stall speeds for my typical flying weight of 925#. I flight plan for 80 mph cruise, you'll see more like 105 - 115 mph. I rarely use flaps to land and approach at no more than 50. (Otherwise I float a lot.) Take off is 500'. (You should see closer to 200'.) Landing is anywhere from 150' to 800', depending on how good you are. ;-) Guy Buchanan San Diego, CA K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.


    Message 9


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    Time: 11:21:05 AM PST US
    Subject: Re: Comm Antenna Plane - Size?
    From: "n85ae" <n85ae@yahoo.com>
    Noel - Ok, so we agree - The main things would be good clean installation, and muttered incantations (very important)? :) Consulting the RF gods, and ground plane mods - Can be considered optional? Regards, Jeff Read this topic online here: http://forums.matronics.com/viewtopic.php?p=188804#188804


    Message 10


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    Time: 12:15:52 PM PST US
    From: mscotter@comcast.net
    Subject: Re: Kitfox Suber EA81 (2nd message)
    Kirk, you've prob. mentioned this before, but what is your empty weight with the stratus? What prop are you running with it? Thanks, Mark Scott, Elkton, MD -------------- Original message ---------------------- From: "kirk hull" <kirkhull@kc.rr.com> > > Ok here is a testimonial for Subaru. It is a great engine. It is a little > heaver then a rotax but it is also much more reliable and cheaper. I have a > 100hp stratus conversion on a classic 4 with over 150 trouble free hours on > it now. We did have 1 small issue caused by a 3rd party shop in the first > 10 hours but stratus fixed the issue right away and we have had no issues > since. 205AK has gone from Kansas city to Oshkosh and all over Kansas > almost to Colorado and climbed to 10000 ft with no problems. It starts on > the first bump even in the winter and with a heater core in the cabin AK was > one of the few airplanes flying all year (even night flights in January at 0 > deg). Pictures of the engine can be found on my EAA website at > WWW.roosterville612.org on the member projects page /al and kirks Kitfox. > Best of all it sounds like an airplane engine not a lawn mower like the > rotax > > > > >


    Message 11


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    Time: 08:47:51 PM PST US
    From: James Shumaker <jimshumaker@sbcglobal.net>
    Subject: Flutter of flaperons
    Chris=0AIf the Ribs move when you wiggle them they are probably broken.- 55 is slow for flutter to show up.- If you have the counter weights this is the first we have heard of flutter with proper counterweights.- How fa st was the flutter?=0AJim Shumaker=0A=0A=0A----- Original Message ----=0AFr om: Southern Skies <chris@southernskies.net>=0ATo: kitfox-list@matronics.co m=0ASent: Friday, June 20, 2008 5:04:18 AM=0ASubject: Kitfox-List: Re: Much Skies <chris@southernskies.net>=0A=0AThis Rotax 582 does have the C Box wit h 3:1.- I will look for the Ivo Prop or a 6 lb toolkit ! Great idea!=0AIn the meantime, I strapped 6 lbs of steel under the engine mount and that br ought everything into the limits. The W&B was done with the BRS installed. There have also been some repairs done to the tailsection from the previous groundloop, perhaps adding a little weight.=0A=0ADuring yesterdays flight after the CG fix everything went fine with much less forward pressure neede d however a brief period of aileron flutter caught my attention, unrelated to the CG as it has happened once before. The first time it was so brief th at I thought it was just some turbulence that was messing with me but on ye sterdays flight it lasted a little longer and made me nervous as this was o n long final, straight and level at 55 knots in smooth air with no or littl e flaps deployed. Just started shaking the stick left to right- I looked at the flapperons and wing while it was happening and both were visibly movin g up and down. Made some S turns and it stopped. The whole episode was shor t. I very closely inspected every piece of the linkage together with a loca l A&P after landing and we found a few places that allowed to be snugged up just a little but not anything large. Nothing was real floppy but the aile rons can be moved up and down a bit (maybe 1/2 inch measuring at!=0A- the trailing edge)- before- the stick mov es. There are a lot of joints so that may be normal.=0ARemoved the linkage completely and checked the aileron nylon bushings- seemed o.k.too, not much axial play- but side to side yes.=0A=0ABoth ailerons have a few dings and a few areas of loose foam. The external counterweights are installed=0Aon t he far outboard side.=0AAll the rib hangers have the thin metal plates inst alled but a couple of the hangers move a little side to side when wiggled a nd a little up and down together with the wing. =0A=0AWhere the aileron rod passes through the turtledeck there is not much of a bearing surface. Just some nylon that doesn't provide much support in my opinion. =0A=0AAny idea s what else I should look at?=0A=0AThanks for any advice-=0A=0A=0AChris Bow les=0AKF 3 Rotax 582=0A=0A>Chris =0A>I think you will find that a medium- ground adjustable 3 blade- Ivo is =0A>pretty close to 12 Lb,- with thi s prop however, you should run a- "C"- =0A>or "E" reduction- unit,- probably with a 3 to 1 ratio- and follow their =0A>install directions . - The A- And- B- reduction boxes are just too light.=0A>=0A>Gary 42 -========================


    Message 12


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    Time: 08:48:22 PM PST US
    Subject: C Box and IVO props
    From: gary.algate@sandvik.com
    FYI you cannot use the IVO ultralight 3 blade IFA prop on the 582 C drive. The 3:1 ratio causes harmonic vibration with the three bladed prop damaging the electric motor and gears. (I went thru this personally) I ended up going to the IVO IFA 2 bladed medium prop as recommended by IVO (which is probably going to give you the weight you need) . That combination worked great, gave me great performance and the sound of that prop was like a lycombing. For what it's worth Gary Gary Algate Classic 4 Jab2200 Office Phone: +61 8 8276 7655 This e-mail is confidential and it is intended only for the addressees. Any review, dissemination, distribution, or copying of this message by persons or entities other than the intended recipient is prohibited. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message from your system. The sender does not accept liability for any errors or omissions in the contents of this message which may arise as a result of the e-mail transmission. Southern Skies <chris@southernskies.net> Sent by: owner-kitfox-list-server@matronics.com 20/06/2008 09:47 PM Please respond to kitfox-list@matronics.com To kitfox-list@matronics.com cc Subject Kitfox-List: Re: Much foward stick on climbout <chris@southernskies.net> This Rotax 582 does have the C Box with 3:1. I will look for the Ivo Prop or a 6 lb toolkit ! Great idea! In the meantime, I strapped 6 lbs of steel under the engine mount and that brought everything into the limits. The W&B was done with the BRS installed. There have also been some repairs done to the tailsection from the previous groundloop, perhaps adding a little weight. During yesterdays flight after the CG fix everything went fine with much less forward pressure needed however a brief period of aileron flutter caught my attention, unrelated to the CG as it has happened once before. The first time it was so brief that I thought it was just some turbulence that was messing with me but on yesterdays flight it lasted a little longer and made me nervous as this was on long final, straight and level at 55 knots in smooth air with no or little flaps deployed. Just started shaking the stick left to right- I looked at the flapperons and wing while it was happening and both were visibly moving up and down. Made some S turns and it stopped. The whole episode was short. I very closely inspected every piece of the linkage together with a local A&P after landing and we found a few places that allowed to be snugged up just a little but not anything large. Nothing was real floppy but the ailerons can be moved up and down a bit (maybe 1/2 inch measuring at! the trailing edge) before the stick moves. There are a lot of joints so that may be normal. Removed the linkage completely and checked the aileron nylon bushings- seemed o.k.too, not much axial play- but side to side yes. Both ailerons have a few dings and a few areas of loose foam. The external counterweights are installed on the far outboard side. All the rib hangers have the thin metal plates installed but a couple of the hangers move a little side to side when wiggled and a little up and down together with the wing. Where the aileron rod passes through the turtledeck there is not much of a bearing surface. Just some nylon that doesn't provide much support in my opinion. Any ideas what else I should look at? Thanks for any advice- Chris Bowles KF 3 Rotax 582 >Chris >I think you will find that a medium ground adjustable 3 blade Ivo is >pretty close to 12 Lb, with this prop however, you should run a "C" >or "E" reduction unit, probably with a 3 to 1 ratio and follow their >install directions . The A And B reduction boxes are just too light. > >Gary 4276M >582


    Message 13


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    Time: 10:07:16 PM PST US
    Subject: Re: Kitfox IV Performance Numbers Help
    From: "Kyle" <kylehdunn@bellsouth.net>
    Hello again, :) Thank you very much for the numbers. With these I feel a lot more comfortable going forth. And thanks for the advice on the sensitivity of the control inputs. From what I had read in the past, I figured the controls were considerably more sensitive than my 172. By the way my plane is not the speedster version. Thanks again, -------- Kyle Dunn Eddyville, Kentucky Kitfox IV 1200 912 Rotax 1978 Cessna 172 N American Aero Phoenix II w/582 Rotax Rotorway Exec. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=188859#188859


    Message 14


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    Time: 10:14:01 PM PST US
    From: "Gary Glasgow" <gary-n-dorothy@tctwest.net>
    Subject: Re: C Box and IVO props
    While Ivo has lots of info on their site ---which is http://www.ivoprop.com/ It is always best to just call them and get the info from them directly as to which prop they will recommend for each individual . They steered me away from the ultralight model when I called. Seems funny that the 3 blade ultralight prop on a C box is a no no --and a medium is OK ? Gary A,---- I'm glad you brought this up, as I had forgot about the ultralight model, and a friend has a new In flight adjustable ultralight prop on his plane which is still in the testing stages ( only a couple of hours flight time so far) Need to call him and have him confer with Ivo before. he has a problem. On mine, I use a 72 inch 3 blade medium on a 3 to one gear box, and would like to use it with my 3.47-1 E drive , however, a service bulletin #17 forbids that with the side rail motor mounts I use. Rotax engineers recommend the side rail mount only for the c box at a 3-1 ratio. Haven't found out why yet. Gary N4276M ----- Original Message ----- From: gary.algate@sandvik.com To: kitfox-list@matronics.com Sent: Friday, June 20, 2008 9:45 PM Subject: Kitfox-List: C Box and IVO props FYI you cannot use the IVO ultralight 3 blade IFA prop on the 582 C drive. The 3:1 ratio causes harmonic vibration with the three bladed prop damaging the electric motor and gears. (I went thru this personally) I ended up going to the IVO IFA 2 bladed medium prop as recommended by IVO (which is probably going to give you the weight you need) . That combination worked great, gave me great performance and the sound of that prop was like a lycombing. For what it's worth Gary Gary Algate Classic 4 Jab2200 Office Phone: +61 8 8276 7655 This e-mail is confidential and it is intended only for the addressees. Any review, dissemination, distribution, or copying of this message by persons or entities other than the intended recipient is prohibited. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message from your system. The sender does not accept liability for any errors or omissions in the contents of this message which may arise as a result of the e-mail transmission. Southern Skies <chris@southernskies.net> Sent by: owner-kitfox-list-server@matronics.com 20/06/2008 09:47 PM Please respond to kitfox-list@matronics.com To kitfox-list@matronics.com cc Subject Kitfox-List: Re: Much foward stick on climbout <chris@southernskies.net> This Rotax 582 does have the C Box with 3:1. I will look for the Ivo Prop or a 6 lb toolkit ! Great idea! In the meantime, I strapped 6 lbs of steel under the engine mount and that brought everything into the limits. The W&B was done with the BRS installed. There have also been some repairs done to the tailsection from the previous groundloop, perhaps adding a little weight. During yesterdays flight after the CG fix everything went fine with much less forward pressure needed however a brief period of aileron flutter caught my attention, unrelated to the CG as it has happened once before. The first time it was so brief that I thought it was just some turbulence that was messing with me but on yesterdays flight it lasted a little longer and made me nervous as this was on long final, straight and level at 55 knots in smooth air with no or little flaps deployed. Just started shaking the stick left to right- I looked at the flapperons and wing while it was happening and both were visibly moving up and down. Made some S turns and it stopped. The whole episode was short. I very closely inspected every piece of the linkage together with a local A&P after landing and we found a few places that allowed to be snugged up just a little but not anything large. Nothing was real floppy but the ailerons can be moved up and down a bit (maybe 1/2 inch measuring at! the trailing edge) before the stick moves. There are a lot of joints so that may be normal. Removed the linkage completely and checked the aileron nylon bushings- seemed o.k.too, not much axial play- but side to side yes. Both ailerons have a few dings and a few areas of loose foam. The external counterweights are installed on the far outboard side. All the rib hangers have the thin metal plates installed but a couple of the hangers move a little side to side when wiggled and a little up and down together with the wing. Where the aileron rod passes through the turtledeck there is not much of a bearing surface. Just some nylon that doesn't provide much support in my opinion. Any ideas what else I should look at? Thanks for any advice- Chris Bowles KF 3 Rotax 582 >Chris >I think you will find that a medium ground adjustable 3 blade Ivo is >pretty close to 12 Lb, with this prop however, you should run a "C" >or "E" reduction unit, probably with a 3 to 1 ratio and follow their >install directions . The A And B reduction boxes are just too light. > >Gary 4276M >582 - - -Matt Dralle, List Admin.




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