Hi again...

It seems that that I have completely accurate when I described the belt drive.... It does not use a toothed belt, rather a 20mm wide belt with 8 little "vee-belts".... sorry if I was not explaining it too well. BTW it looks like it is the same type of belt that Mick Reeves uses on his reduction unit.
I will try it today with the new prop adapter I made last night, it looks to be a little more straigth than the old one.
There are two reasons for going this route rather than just using a bigger engine, one is the sound of the beltdrive....(sounds soooo cool), and the other reason is the possibility to drive a scale size prop... Show me an engine who will swing a 33in 3 or 4-blade prop, and still not overpower a 35lb warbird...