Gunnar, Steve Bennett at Great Plains ells the Nikasil cylinders as an option, they do weight less. I have not had any experience with them in a VW though. I would stay with the VW for sure and rule out the redrive engine. Look at the Great Plains Rear drive engine as the rear main will handle the thrust loads and it is the lightest VW out there.
Just my two cents worth... Fred Johnson Reno, NV Gunnar wrote: I have just started planning a KR-2S build, and would appreciate your input on choice of engine. I have also searched KRNet archive, but have not found a good comparison of available wv engines yet. I aim to certify the aircraft as an UL, so it has to be light.
