Has anybody on here used a OS 110A FS and if so have you used anything other than the stock muffler?

I have lots of flights on one, sorry stock muffler only, but great running engine-FLAWLESS. I would think the old style would work or any other that has a nipple for pressuring the tank.

frenchie79, What size prop are you using and do you know what rpm's you are getting. And is the fuel usage like the rest of the OS 4-strokes? I have not ran mine yet. I have it installed in a TF Mustang and am trying to get an exhuast on it first.

I have mine in a Mayhem which is more of a 3-D plane and run a 16x4 APC. I also run a 15x6. A friend has one in a 4*60 with a 15x6 APC and it performs great-probably more what you'll want in the Mustang. The RPMs run in the mid to low 9K range, which is the number i always try to hit on 4 strokes.

My 110 was orginally going into a 60 size Corsair which is almost complete but didn't like the muffler, so i swapped a 110 YS out of the Mayhem to go into the Corsair. I too would like to run the OS if i can find a simple smaller muffler.

As far as fuel usage (it sips the stuff) and not much for oil all over the plane unlike the YS. You don't have as much power but for a Warbird in a 60 size it should be great. It flat out rips a 4*60.