Arthur, It is to be a half VW, They come from Hummel engines in 28,32,37, 45hp, looking at around 5.5k delivered for the engine. Terry says that most guys are using the 37hp and are getting 100-110mph cruise and around 1000fpm and the 45hp is around 120mph so if that's the case i would be happy! Not to keen on 2 stroke, think that they work just fine in my bike tho!!
Just got off the phone to Terry from Hummel and the plans are on the way!! got some good info from him and he is going to forward some more on to me. He also said that there were a few in progress out here at the moment, would be good to see a few in the air! is quite a nice helpful guy too