View Full Version : OS 91SZ

07-11-2010, 10:41 PM
I have a OS 91SZ non pump that runs great. This came out of a friends Trex 700. This motor in the Trex 700 mad lots of power. I was going to get a 700 myself but decided to stay all electric. I would like to sell this for $115 shipped in the U.S

08-16-2010, 11:59 AM
Still available?

If so, how many gallons throught it. What type of flying was done on it? can I get a pic through the exhaust port and maybe one of the top of the piston?