ZDZ is about to come out a 40cc FAI gas engine. Check it out at www.rcshowcase.com.

You best option to balance it out probably will be a gasser heavier than the current 26cc one. The other option will be to extend the engine out a litt bit by spacers, and remount the cowl.

I used to use a RCS 180 motor (3.5 lb) on my Gas Pattern ship and it is balance ok. I am waiting for the new ZDZ 40cc FAI to cut the weight.

--qc