- Drills 4 or 6 holes in the muffler (4 mm), this let the engine better works, noise increase is not so big. Engine is working a lot better !

- You can even try to take out the whole baffle, and win 200rpm -> this increase the sound a little bit.

- TIPS :
Overtighten the exhaust screw when the heli is still hot (after a 3 min flight for ex.). Replace the philips screw with hex screws (3mm)


You might like also

No Thumbnail was found
http://www.runryder.com/helicopter/t126966p1/ …
5490 Days ago
Engine overheating cure
Symptoms:Engine overheatingLoss of power even if the motor smoke a lotWhy? it really depends...Where You are living....in the desert? do not forget that some gyro may have trouble too and may drift a lot if the day is too warm (more than 35°C). In altitude, less oxygen -> more nitroThe percentage of nitro/oil the more oil/nitro the cooler the engine will run -> Attention here in europe, nitromethan can cost an arm and and leg -> 30euro/liter !!! at 15%nitro. …
5500 Days ago