Originally Posted by
dutchy50
Hello
Is it possible to use the OS 46AX power box muffler with the Evolution 10cc gas engine as it fits the same bolt pattern. The reason I wish to use this muffler is, the original muffler just keeps coming LOOSE!! after every flight.
Cheers
dutchy50
I'm running the OS 46 muffler on mine and my engine runs better than ever. A slight loss in top end rpm but well worth it for the great idle and smooth transition. It's also very quiet. I had to lean the high speed needle a full half turn from where it was set with the previous Macs muffler. I think this was due to better fuel tank pressure.
RS