Pierre wrote: >The engine is a standard VW 2 liter Kombi engine.
70 HP tells the story, but you should still be able to a 52x48 prop up higher than that. I still say that one prop maker's pitch is not necessarily the same as another's. The good news is that it's a Type 4 engine, rather than a Type 1. With a stroker crank and larger pistons and cylinders, you turn that 2000cc engine into a 2600cc engine that's almost as big as a 2700cc Corvair. That would give you 90 HP. A higher lift cam will likely give you a few more, maybe 95 HP. That should improve things considerably. Parts availability for the Type 4 engine is not so great, since they don't make the heads or cases anymore, but the same can be said for the Corvair. Great Plains Aircraft (GPASC) at http://greatplainsas.com/index.html used to make a stroker crank with tapered hub for the Type 4, but I don't know for sure that they still do. Having just rebuilt a Type 1 that I am currently flying behind, and having put 1100 hours on a Corvair, I will have to say that the Corvair is a very simple solution also, now that the crank issue has been resolved with a 4340 crank. But given limited parts availability for the Corvair in your part of the world, a used O-200 makes a lot of sense for your KR2S, and would probably be less expensive in the long run... Mark Langford ML at N56ML.com http://www.n56ml.com
