- Aug 17, 2016
- Erhard Minnesota
- C150-C172-Taylorcraft-Tbird-Rans S9-challenger-Benson-Air Command-Sportcopter
- Total Flight Time
I started out with a 503 with single pumper carb. I switched to a 582 with bing carbs so I couldn't invert but went faster. The 503 did just fine. Just needed to think energy is all. 670 with 90hp would be fun to try though. The plane itself in my opinion was very safe. I was always able to correct and fly out of any situation I got myself into. You had to fly it all the time though. Couldn't take your hand off the stick or feet off the peddles.Mine has a 503 at present. I'm building a Rotax 670 like the one Rotax Rick builds. Don't know if I should run a SB 44 Mikuni single or a pair of pumper carbs. What did you run?
Andy,Mine has a 503 at present. I'm building a Rotax 670 like the one Rotax Rick builds.
Sounds like a fun plane. Hope you get the 670 figured out.Andy,
We have an S10 and the previous owner was a snowmobile guy. His field elevation was 7,800 ft., so he had installed a 670. The S10 is a rocket ship with that engine. We found a crack in the motor mount, took it to our welder and he found 2 more. You'll need to beef up the motor mount to handle the extra power of the 670.
We couldn't get our 670 to run properly in the mid-range (probably wrong exhaust according to Rotax Rick) and so didn't trust it and put a 582 that our mount was designed for and it flies great. One of these days I want to try the 670 on our Sport Copter Vortex.