Today's Message Index:
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1. 01:15 PM - Re: Corvair Piet performance report (at7000ft)
2. 02:53 PM - Final trimmed tail post measurement (Pocono John)
3. 04:36 PM - Re: Final trimmed tail post measurement (aviken)
4. 05:13 PM - Re: Corvair Piet performance report (Rick Schreiber)
Message 1
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Subject: | Re: Corvair Piet performance report |
Beautiful Piet Rick, mine is just about the same, 2700 cc Corvair, 17 gal front
cowl tank also designed starting from Mike Cuy's design (welded aluminum), 736
lbs empty. Gravity feed to an MA3-SPA. Have a 66x30 Tennesse prop which gives
me 3000 rpm full throttle level flight. 100 hrs TT and is a blast to fly (as
long as the temperature is 50 or above here in Colorado).
Rick H
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Rick Holland
NX6819Z
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=465143#465143
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Subject: | Final trimmed tail post measurement |
I just trimmed a tail post. It looks fine except one thing. My cut was measured
1/2" from the inside, forgetting about the gusset. So that tail post is now .625
wide, not .50 because of the gusset. If I do the same on the other half, my
tail will be 1 1/4" wide, not 1".
Is that a big deal? Is the tail post supposed to be 1" with or without the gussets
included?
I can easy knock off another 1/8".just wondering. I can't seem to find it in the
plans (probably right in front of me too).
Thanks!
John
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John
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http://forums.matronics.com/viewtopic.php?p=465146#465146
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Subject: | Re: Final trimmed tail post measurement |
I am not 100 percent sure but I believe the one inch is before the gusset . Most
of the measurements are of the frame work not the gussets.
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http://forums.matronics.com/viewtopic.php?p=465147#465147
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Subject: | Re: Corvair Piet performance report |
Thanks for the compliment Rick. You have certainly built a nice looking Piet yourself.
I have been following your build for some time now looking for ideas as
you were a lot farther along than me.
My performance figures have changed a little from what I first posted. I now have
30 hours on the engine and here is what I am getting now.
WOT level flight 2800 RPM, just shy of 100 mph indicated
WOT climb out 2675 RPM, 65 mph = about 700 fpm climb at 60 deg
2200 rpm cruise = 75 mph
2100 rpm cruise = 65 mph
The indicated airspeeds agree with my onboard gps pretty close.
What rpm's are you running to get 65 to 75 mph in cruise?
Rick Schreiber
NX478RS
Porter Co Regional, Valparaiso IN
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http://forums.matronics.com/viewtopic.php?p=465148#465148
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