- OS32 Problems
- Loctite on OS engine ?
- known faults with the Redline 53?
- Nitro tuning/governor questions
- Results: Hayes black neoprene fuel line expansion
- Does anyone Dail-Indicate Heli's without fan/clutch collets?
- Any word on the new OS .91 HZ Heli engine ???
- OS91 engine with ar7100r
- os 91 szh hyper pumped how many head shims
- from os hyper to YS50
- OS 91 sz pumped or not
- OS91SZH running Hot
- INSANE amount of exhaust
- 'finger' test on a YS50
- OS 50 Trouble
- Nitro newbie has some questions...
- Some one knows the difference between Align 50 Hyper & O.S 50 Hyper.
- ys .61 trouble
- Dropping from 30% to 15/20%
- Did I burn anything else beside the glow plug on OS 50 Hyper?
- Trex 600N with OS 50 Hyper sounds pingy now not nice idle after +-4 gallons
- pipe needed
- ys 91 sr motor
- ambient temp affects needle settings how?
- Did I ruin my engine?