I went back through all the posts and found two people who put RCGF 26 cc in theirs and they weigh 38.1 oz. Both planes balanced perfect

I found the site on rcu where minnflyer did the review and he used a Zenoah 20cc that weights in at 41.6 oz, I printed out his whole review and glad to have it.

My Gemini 160 twin weights 38.8 oz and has more power, I think it will be a good match.

I plan to use a lite glow driver, don't want to lose a cyl. in flight.

sticks