Hi!
These ASP two stroke engines are really impressive (.40 -52).
A year ago there were some newbies comming to our field looking for help and they both had Kyosho GX.40 engines with 12x6 Kyosho props in their Kyosho Calmato trainer airplanes.
I told them that 12x6 would probably be too much prop for a their engines but as they did not have any other props with them I desided to test fly their airplanes.
Lo and behold!I was very impressed in the way these engines behaved . That big 12x6 prop didn't bog down that little engine what so ever. The plane performed perfekt with it. Since then I have tried the Kysho GX .40 (same as the ASP .40) in Q-500 pylon and it's one of the most powerful sport engines on the market, ravaling the Webra .40 as being the most powerful sport .40 engine.
The ASP .40 does 14600rpm using a RAM 10x6 plastic prop on 80/20 Castor based fuel (with both it's head shims removed) and that is in line with what the Webra .40 GT does as well.
For instance the MVVS .40 does only 13300rpm on the same RAM 10x6 prop using the zero nitro head.