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Old 03-28-2012 | 06:15 AM
  #255  
clivemc
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From: pmburg, SOUTH AFRICA
Default RE: OS 33GT Gasoline Engine for Pattern


ORIGINAL: MTK


ORIGINAL: DagTheElder

MTK,

I noticed your numbers re OS33.
A quick run thrugh of a 33ccm engine indicates this: Rev/min 8000, BMEP 10,00 bar, Piston speed 9,76m/s, ~~ = potential power 4.37 hp.
The BMEP is way into racing engines.

Regards
We've been blessed with some pretty nice weather the past several weeks here in the Northeast. Have continued to fly the 33Gt and now have two gallons through it, some 30 flights. I think it is fully broken in finally. Still running the 19x11 and getting tremendous, quiet power out of it. A friend of mine has an 18x12 3 blader that will lend to me so we'll see how it runs on the set-up. Particularly interested in quietness and brakes

I will be installing the 33 in my new Aesthesis pattern plane this week. Really curious about how this combination will work
matt

do you have some rpm numbers please on the APC19x11? and any results on the 3 blader ?