---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Sun 08/22/10: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:24 AM - Re: Performance Numbers - IO-390/Hartzell/RV-8 (lessdragprod@aol.com) 2. 06:43 AM - Re: Re: New avionics (mr.gsun@gmail.com) 3. 01:28 PM - Re: vm1000 (432SC) ________________________________ Message 1 _____________________________________ Time: 06:24:27 AM PST US Subject: Re: RV-List: Performance Numbers - IO-390/Hartzell/RV-8 From: lessdragprod@aol.com 12" numbers are required for an aircraft with a cruise speed of 180, or gr eater, KCAS (knots calibrated airspeed). Van's Aircraft uses 8,000' density altitude for their cruise altitude. 180 KCAS (207 mph CAS) at 8.000' density altitude is 203 KTAS, or about 23 3 mpg TAS. >From Matt's flight data, he probably won't be required to have 12" high "N " numbers. Depending, of course, on the Pilot Operation Handbook cruising altitudw an d cruise power statement. Jim Ayers -----Original Message----- From: Mike Robertson Sent: Sat, Aug 21, 2010 11:56 am Subject: RE: RV-List: Performance Numbers - IO-390/Hartzell/RV-8 Matt, With those airspeeds I have got to ask you, "Do you have 12 inch numbers on the side of you plane?? Do Not Archive Mike Robertson' Das Fed From: dralle@matronics.com Subject: RV-List: Performance Numbers - IO-390/Hartzell/RV-8 Dear Listers, So I could smell the disbelief in the air regarding my performance claims, so tonight after work I went up and did some testing. All tests were at the same altitude with the autopilot on, going the same direction (mostly South) with a Westerly wind over about the same 25 mile area. One interesting thing that I noticed tonight that I hadn't in the past was what a dramatic effect exacting leaning could have on the speed for a giv en power/prop setting. A small adjustment in the mixture could increase or decrease the speed sometimes as much as 5 MPH. Below is a table of the numbers I saw tonight. I've include the spreadshe et as well as photos of each setting from the EFIS PDF/Engine data. All numbers on the EFISs are in MPH. The GPS GS is in the upper left corn er of the PFD. The TAS is on the bottom right side of the PFD display. Indicated is on the left side in the middle of the PFD. Temp is in the upper left corner of the Eng display. MAP, RPM, and Flow are also on the Eng display shown as gauges with text. An interesting thing I noticed that at 27.x MAP, adjusting the RPM between 2000 and 2690 had a 9.8 to 17.0 impact of fuel flow (7.2 GPH) and a 22MPH impact on speed. That's about a $32/hr difference. Let the discussion begin... ;-) Matt Dralle RV-8 #82880 N998RV http://www.mattsrv8.com - Matt's RV-8 Construction Blog http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel Status: Enjoying The Fruits of 2500 Hours of Labor! = ________________________________ Message 2 _____________________________________ Time: 06:43:15 AM PST US Subject: Re: RE: RV-List: New avionics From: mr.gsun@gmail.com Terry. Well.if it will not be used in your- 8 maybe it should go into my- 7 over in Bremerton. That way it could perhaps fly if it works out. We should continue this discussion directly....... mr.gsun@gmail.com Thanks greg On Aug 21, 2010 10:11 PM, "Terry Watson" wrote: Greg, Yes, I don=92t intend to install it now. My project has been stalled for a few years. I don=92t recall just what the last software update is, but I think I could figure it out. I did install the box into the airplane and the screen in the panel, plus I installed the magnetometer in the RV-8A rear baggage compartment. I have th e separate keypad for the thing too. The gold box and the screen have been packed away for some time now. Terry Seattle *From:* owner-rv-list-server@matronics.com [mailto: owner-rv-list-server@matronics.com] *On Behalf Of *mr.gsun@gmail.com *Sent:* Saturday, August 21, 2010 3:28 PM Subject: Re: RV-List: New avionics Terry. Would you want to part with it? Any idea which software is on it? greg > > On Aug 21, 2010 12:28 PM, wrote: > > Well. My blue mtn efis one finally died completely and I am about to orde r a skyview system. ... *t="_blank">http://www.matronics.com/Navigator?RV-List* *tp://forums.matronics.com* *_blank">http://www.matronics.com/contribution* * * http://www.matronics.com/Navigator?RV-List *http://forums.matronics.com* http://www.matronics.com/contribution ________________________________ Message 3 _____________________________________ Time: 01:28:59 PM PST US Subject: RV-List: Re: vm1000 From: "432SC" Found 'em online: http://www.jpitech.com/showfaq.php?id=718 Steve Read this topic online here: http://forums.matronics.com/viewtopic.php?p=309774#309774 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv-list Browse Digests http://www.matronics.com/digest/rv-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.