What Bill says about servo gears is true. All my gassers run metal gears. The only nylon are non-control surface. You are correct about the nyrod. I use pull-pull a lot, no big deal once you know how to deal with the geometry. I got a response from rcgf about their 20cc, straight from the horses mouth. The best news is that its possible to rotate the cylinder to face the muffler towards the rear. Just takes a little metal work on the cylinder skirt. I'm gonna go for it when its available. Think I'll also get a SV26 too. Got some money now that the DF stuff is sold.

Hey Edwin
Thanks for writing!

Yes... we are releasing the 20cc rear.. In fact I have one in my hand (MY sample.. lol).. It is a BEAUTY...

I have run it (about 20 minutes only). The results are impressive too. More on this as I get further experience. But this engine will be a winner for sure.

In terms of turning the cylinder around.. it is possible.. You will need to grind some metal on the base of the cylinder so the port is open. We have looked at this option, but we have not yet tried it!

The narrower muffler is in the works too. It is a matter of timing for us. We have a number of projects we are working on, but the muffler is in our sights!

Cheers
Henry