---------------------------------------------------------- Stratus-List Digest Archive --- Total Messages Posted Tue 04/03/07: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:10 AM - Re: Static RPM for 100HP EA81 Subaru (LarryMcFarland) 2. 08:40 AM - Re: Static RPM for 100HP EA81 Subaru (LarryMcFarland) 3. 01:57 PM - Re: Static RPM for 100HP EA81 Subaru (Bryan Martin) 4. 03:38 PM - Re: Static RPM for 100HP EA81 Subaru (Bill Morelli) ________________________________ Message 1 _____________________________________ Time: 07:10:28 AM PST US From: LarryMcFarland Subject: Re: Stratus-List: Static RPM for 100HP EA81 Subaru Bryan, I use the tip of the blade to attach the pitch measuring gage. I did send my heads to RAM Performance and h.p. could be a factor. I have to tie off the landing gear facing into the wind with two ropes going back to the trailer hitch on my Saturn. In max cruise, currently, the plane will go another 300 rpm. I have a VDO tach and the one on my EIS System and they're always within 100 rpm of agreement. Static tests were last conducted summer of 06 in rather warm conditions. Larry McFarland do not archive Bryan Martin wrote: > > > Are you measuring the pitch right at the tip or at some other point on > the blade? My Warp drive documentation says to measure at the tip of > the prop. With my prop set at 17 degrees I only get about 4500 static. > > On Apr 2, 2007, at 8:52 PM, LarryMcFarland wrote: > >> >> >> Bryan, >> With current jetting, my EA81 goes to 5100 rpm static and I fly with >> the same prop set to 17-degrees. Pleased with this setting but that >> might change if I ever get a LRI installed. >> >> Larry McFarland > > > --Bryan Martin > N61BM, CH 601 XL, > RAM Subaru, Stratus redrive. > do not archive. > > ________________________________ Message 2 _____________________________________ Time: 08:40:47 AM PST US From: LarryMcFarland Subject: Re: Stratus-List: Static RPM for 100HP EA81 Subaru Bryan, I think I've quoted you apples and oranges. What was written for rpm in 06 runups and the rpms seen in Gary's data tends to suggest I could not have been getting 5100 rpm static at the pitch I'm using now. Please disregard my static number as I believe it doesn't agree with the pitch that was actually used last year. Too great a range of difference as I use the same prop but was taking data for rpms when the pitch was being adjusted. Another case of the fingers getting ahead of the brain......... Larry McFarland gary wrote: > > > Would someone with a 100HP EA81 Subaru conversion with a three blade > Warp Drive prop tell me what static RPM they're getting and what > pitch setting. I think I've been running mine too coarse and I'm > going to try a finer pitch and would like some ballpark figures to > compare my results to. > > > Here's what I get on my plane (engine rpm (prop rpm)); > > > > warp 3-blade, 70", square tip > > stratus 2.2:1 reduction, 100 HP at 5400 rpm > > > > pitch static climb WOT > level > > > > 12 deg 4800 (2182) 5000 (2272) 5400+ (2454) > > 14 deg 4600 (2091) 4800 (2182) 5000 (2272) > > 16 deg 4200 (1909) 4600 (2091) > > > > gary > > ________________________________ Message 3 _____________________________________ Time: 01:57:16 PM PST US From: Bryan Martin Subject: Re: Stratus-List: Static RPM for 100HP EA81 Subaru I just set my prop pitch to 14 and I'm getting 4900 static and 5200 WOT at 130 mph IAS. At 4400 I can still get about 105 mph so I think I'm about where I aught to be. Thanks for the responses. -- Bryan Martin N61BM, CH 601 XL, RAM Subaru, Stratus redrive. do not archive. ________________________________ Message 4 _____________________________________ Time: 03:38:47 PM PST US From: "Bill Morelli" Subject: re: Stratus-List: Static RPM for 100HP EA81 Subaru Bryan, I initially had my prop pitch at 12.5 degrees and had a static RPM of 4900 RPM I now am at 15 degrees but have not checked the static RPM at that pitch setting Bill ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message stratus-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Stratus-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/stratus-list Browse Digests http://www.matronics.com/digest/stratus-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.