---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Sat 05/27/06: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:41 AM - Cruise Prop O320 (Darrell Reiley) 2. 09:41 AM - Re: make ur cover (bertrv6@highstream.net) 3. 08:06 PM - Re: Cruise Prop O320 (james frierson) ________________________________ Message 1 _____________________________________ Time: 09:41:13 AM PST US From: Darrell Reiley Subject: RV-List: Cruise Prop O320 --> RV-List message posted by: Darrell Reiley Anyone using a Sensenich 70CM()S9-0-81 Cruise Prop with an O320/160 hp on an RV 7 0r RV 9? Darrell --------------------------------- Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates. ________________________________ Message 2 _____________________________________ Time: 09:41:56 AM PST US From: bertrv6@highstream.net Subject: Re: RV-List:make ur cover --> RV-List message posted by: bertrv6@highstream.net Quoting WPAerial@aol.com: > --> RV-List message posted by: WPAerial@aol.com > > You built an air plane, why not sew one up yourself. > > > I made mine out of a car cover I bought. > light weight and than bought gas with the savings. > > > do not archive > > Did not see a name... John doe...Do you have any patter for this. or did your wife did it? We would like to try making one, but.... Suggestions? thanks Bert rv6a Do not archive > > ________________________________ Message 3 _____________________________________ Time: 08:06:11 PM PST US From: "james frierson" Subject: RE: RV-List: Cruise Prop O320 --> RV-List message posted by: "james frierson" Darrel, I asked the same qeustion and awhile back and this was the response I got from a guy that was running an 79" on a 160hp 6A. "I recently upgraded my 150hp motor to 160hp and have about 30 hours since the rebuild. I started out with the 150hp prop (77") as I was only turning 2150 on take off and 2470 cruise. However, that went up to 2350 on take off and well over 2650 cruise (could not use full throttle as the prop is limited to 2600 rpm). I now have about 10 hours on the 79" prop. I was measuring some numbers the other day - I can pull about 2630 at 5500' giving about 150 kt indicated (around 170 kt true), although that is 30 rpm over the limit. At 2470 I get 137 kt indicated (around 155 true). I am thinking about getting an extra inch of pitch added to the prop, but might stay where I am. On climb I'm getting over 1000 fpm at about 1000 ft on a hot Texas day (low 90s) at about 1500lbs - my CHTs get hot quickly so I can't sustain that for very long. On the runway I am now getting 2300 rpm, so am loathe to increase the pitch more as at 2150 the climb rate was really poor (sometimes less than 500 fpm). However I might go for an additional inch of pitch (to 80"), I would have thought 81" would really be a cruise prop and not yield very good climb performance. I think I am ready to sacrifice a couple of knots of cruise speed for better climb." I resently put the 80" on my 160HP 6A and this is the results I am experiencing as noted in an earlier posting.. "I recently put a new 80 pitch Sensenich propeller on my 160HP RV6A. I made a cross country trip and here are my initial results. At 8500 at approximately 60 degrees F, I was indicating 158 mph, 2530 rpms at WOT and 1680 lbs. After doing the math that wound up being 185 mph TAS and the ground speed according to my GPS was 195 mph which would be about right as there should have been a slight 5-8 knot tail wind component according to Dans web sites wind calculator. After climbing to 9500 the results were still 158 mph indicated, 58deg F, 2500 rpm at WOT which works out to 188 mph TAS, 197 mph GPS ground speed. Again with the expected tail winds this was right on. This is the first time I have been able to fly at WOT and the CHTs and the EGTs were much more uniform. All in all the new prop is doing exactly as advertised. Note: These are not super picky test pilot figures, just what was noted during a flight from a fly-in with my lovely bride taking notes" Hope this helps Scott RV6A 160hp >From: Darrell Reiley >To: RV-List >Subject: RV-List: Cruise Prop O320 >Date: Sat, 27 May 2006 09:35:48 -0700 (PDT) > >--> RV-List message posted by: Darrell Reiley > >Anyone using a Sensenich 70CM()S9-0-81 Cruise Prop with an O320/160 hp >on an RV 7 0r RV 9? > >Darrell > > >--------------------------------- >Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates. > >