Walther

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Anyone know where I can get an in cowl muffler for this engine? I would like to use it in a HOB Bonanza, the engine will be inverted.

aspeed

I think you will have to make up something on your own. The only choice is on or off. I believe there is a radius that could be mated up to with a couple tapped holes, so it is possible to start with some tubing or whatever.

Mr Cox

I have never seen any aftermarket mufflers for Novel engines. It is very easy to make your own though as the flange on the engine is not flat-faced but shaped for a tube. Some thin walled aluminium tubing of the right diameter (eg from K&S) and some JB weld is all it takes.

Here's how I did it on my Super Chipmunk;