It's a boring day here. Ninty-seven degrees F,( for you Canadians) 12-15 mph wind and Thunder showers, and my Venus is on the way. So I went back over this entire thread and looked at all the pictures and ran my own Poll on how you all mounted your engines.

Results: 8 inverted 4-strokes. (These results are from pictures only but probably representative)
4 135* mounts. 2x4-s and 2x2-s
1 90* mount. a 2-s

It makes perfect sense since inverted requires the least cowl cutting. Two strokes don't really like to be inverted.

So I'm going to mount mine inverted with a TurboHeader muffler so I'll have cowl holes only for the needle valve adjustment and fuel probe.

http://www.rcuniverse.com/market/ite...itemId=411691#

I'm also using one of these mufflers to eliminate the muffler vibrating loose problems I have had with both the Saito 150 and 180on My DP Ultimate.