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View Full Version : Engines and Mufflers

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  1. How Hot a Plug?
  2. OS 55Hz operating temperature
  3. Is it OK to change fuel brands?
  4. OS 50SXH -
  5. g 23
  6. Pressure question
  7. Pumped OS91HZ with CY MP6, Wildcat CY30% fuel?
  8. Funtech Muffler on OS55
  9. YS50ST carburetor maintenance
  10. Quick question
  11. glow plug
  12. Nitro bogging
  13. Breaking in OS50 causing Tail Problems
  14. What could be wrong here.. os55 and temp
  15. Anyone know anything about the Evolution heli .52NX engines?
  16. os 50 hyper won't run without glow driver
  17. Engine start and running problem of OS50
  18. I think I may have noobed my Align 55H. !*@#
  19. Starting Redline 53
  20. I cant get the piston out of a Align 55H.
  21. Scoring on Back Plate Align 55H. WTH?
  22. YS 91SR - Vibration problem.
  23. help with webra 55
  24. os 50 hyper skips or quits in transition
  25. What pipe for the YS 50st?