The International Cessna^® 170 Association

gahorn wrote: I'm not trying to be critical of the efforts to add data....I was attempting to broaden the view we all take of such data. Unless we all participate using identical techniques and standardized configurations ( a standardized flight-test program), then we'll not really develop dependable baselines.

You point is well taken George. You've seen it so many times you must have overlooked the caution all my posts end with.

Ha!!! Your posts are worth far more than anyone has ever paid you! (By the way...what IS your stipend anyway? I think the board should double it!)

Kinda off topic but my understanding is vacuum pumps have a max altitude which they work anyways do to air presure. (I think I saw this in a Piper Arrow book) I remember flying a Cherokee 6 once with a standby vacuum that was from the engine. If I remember the placard right you had to pull power back to get good vacuum to drive the instruments. All in all probably a good backup if the engine is running. Probably fairly inexpensive compared to a electric standby or electric attitude etc. Who likes hard IFR in singles ANYWAYS!

Thanks

I miss the minimum static RPM by about 50, but I attribute that to a 600 foot elevation, some tach error, and an engine that was last overhauled in 1974 This thread did raise a question regarding the prop. If my log is correct, I have a 7651 prop. I can't remember if this is a cruise or climb prop. Can anyone refresh my memory

A 7651 prop is a climb prop.

John a 7651 would be considered a climb prop.

Beat you to it Bruce. Saw your plane at Sky Manor on Saturday. Was there with a couple of guys flying Citabria's. Didn't see you though.

Yes we were typing at the same time. Was there with the Quakertown Pilots Association pilots. We just finished flying about 30 Young Eagles and went to lunch at Sky Manor. Buck Franke had his 52 there as well which he got from Doug Mowry.