ORIGINAL: Tman
I thought I checked the site for threads on the engine. I guess I didn't check thoroughly enough. I did more checking today on another site and found out that the Mintor 33 is the better of the two engines (33 vs 38) but not sure why the .38 turned out to be a poor performer.
Guys,
The M38 is not a poor performer per se. My application is different than most...mine is a competition set-up requiring a pipe, large props and soft mounting. As such, the M38 was found to have average power, similar to something like a ZDZ40 on pipe. I am looking for greater output at mid throttle positions where I fly my 11 lb pattern planes. The M38 showed average power at mid throttle settings, compared to the OS33GT for example.
The OS is a real stump puller at mid throttle, turning very large props, actually the same props as a YS175 on 30% nitro, at similar speed. If anyone has seen a YS 175 in action you would know what I mean. It is one powerful sucker!!
The M38 is a great sport engine however with easy, repeatable field manners. I always like the 2 flip hand starts of this engine. Mine may benefit some more from more break in since I only have 1 1/2 gallons through it. If I had a sport plane I wouldn't hesitate putting the M38 in it