Absolut Yak

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Wanting to find out what pilots are getting in the real world with various prop and exhaust combo's.

I'm turning 7200 rpms (peak lean was 7360) with DA stock exhaust and Xoar 22 x 8 prop at approx 85 degrees 500 feet msl.

This subject may have been beat into the ground in other threads, but let's give it a go anyway.

Rcpilot

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There is a forum specifically for tachometer readings. You might run a search in that forum.

Or do a search in this forum. It has been beat to death and the information is all here, if you just search for it.

Absolut Yak

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Thanks for the heads up. I had done some searching, but didn't realize there was a specific tachometer forum. I'll browse over there. Meantime, I'll check this thread if anyone cares to post further.

Doug

rmh

yer engine is running just fine --on that prop and muffler in the situation you describe -
stay away from the peak lean--
on a given day the weather can easily alter the numbers - A LOT -you will see -also a cold run will put up more than a second or third run - etc..

Absolut Yak

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Thanks, Dick. I put a lot of credence in what you post.

Doug

Josey Wales

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Stock Exhaust..sea level..50:1 BelRay H1R..NX 23-8 6900 R's..peaked out at 7000 so I richened down to 6850-6900..I have a cheap tach.

bodywerks

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7200 peak RPM on a PT 22X8 withing the first 2 minute of running the brand new engine. I richened it back to 7050.

jongurley

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I am getting 6750 on a NX23x8 and 6900 with a VESS 23A ,,, here in North Carolina in 89 degree 80% humidity

pierocapredoni

Hi, I'm getting 7000-7100 rpm, with MTW75K canister, 50:1 motul 800, mejzlik 22x8 at 3000 feet high. Hope this helps.

Absolut Yak

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Just the sort of info I was looking for. Thanks, everyone. I'm going to try a Vess 23A today. I'll let you know what I get with that.

Doug