I have one and the bench runs suggested a good powerhouse. Unfortunately,
due to a CoG problem the maiden flight of my Zero ended with a Kamikaze like
landing into the field from 100ft about 20seconds after take off. Luckily
the soil was still wet, which didn't stop the aircraft from turning back
into the ultimate kit (over 100000 parts) but once the engine was pulled out
of the mud it was found to be perfect (nothing bent/damaged). A quick clean
and it'll run again.
BTW don't run high nitro, 10% is more than adequate for these engines.
If you don't like the engine, send it to me.
Forgot to mention. I have a simple ASP rule that I've yet to prove BUT it
serves me well. "An ASP/Magnum four stroke is similar to an OS except it's
50% cheaper for a cost of 5% peak power." I can live with that trade off.
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.