|06-04-2004, 11:33 AM||#1|
Join Date: Nov 2003
Location: Salmon Arm, B.C.
Feedback: 0 / 0%
Total Props: 0
MVVS 1.60 gasser performance
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I finally got a chance to fire up my 1.60! I am running this engine with the tuned pipe on an Ultra Stick Lite. My flying partner has the exact same setup, his engine has about 1.5 hours on it. My engine fired up on the 5th flip after getting it primed, very impressive. Running Amsoil sythetic at 32:1, I let it run just below half throttle for about 5 minutes then started giving it short bursts of more throttle. This engine runs very nice, it's going to be a good powerplant for the Stick.
While we were making noise, we thought we'd tach a few different props. We also hooked a fish scale to the tail of the airplane to give us some relative measurements of thrust. No this is not going to be accurate in absolute terms, but as all the tests were run back to back under identical conditions, the thrust measurements are a reasonable indicator of how the props performed in relation to each other.
18x8 Dynathrust - 7950 rpm, 14.5 lbs pull
18x8N APC - 8350 rpm 14.75 lbs pull
18x8S Menz 8350 rpm 16.5 lbs pull
18x6 Master Aiscrew - 9100 rpm 14.5 lbs pull
The Menz prop spooled up the quickest, followed closley by the APC, the MAS and Dynathrust were a fair bit slower to wind up.
Salmon Arm, B.C.
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