Hello All, I'm assembling a Piper Cub ARF. The manual (which was translated from German) shows an OS 46 FX (which I happen to be using) with the standard muffler that comes with the OS.

Given that this engine has a cowl, can I/ should I use the "standard" muffler? Do people use a "Pitts" style muffler for the scale look, because of necessity (i.e. the cowl) or for both/neither?

Thanks!

You can use the standard muffler or the pitts. With that standard muffler, you will have to cut out a bunch of the cowl to clear the muffler. The pitts will generally fit inside the cowl with just the two pipes sticking out of the cowl. This looks better, but is probably noisier than the standard muffler.

If I use the Pitts, I don't have to "turn" the engine upside down or anything do I? I'm not sure where I got this idea.

If I mount the engine sideways, does this mean I turn the engine bracket sideways in order to mount it correctly?

yes, the engine mount is rotated 90 degrees so that the two beams that support the engine are vertical instead of horizontal.

Thanks, that kind of info isn't in the instructions. I was hoping my first ARF was going to have better instructions!