I have 2 styles of pitts muffler's and both had to be ground down to fit .


The one that is in the picture is a B.C.M i dont know what that is but it is stamped in the muffler. I got it off of ebay for 25.00 and i just took a gamble that it would fit one of my 50cc engine and heck it fit my DA and my ZDZ. I dont think i will use it on this plane. I think that stands for bisson cutom muffler.

Here is a pic of the other muffler. It is a SL 2123 i guess it is slimline.

It just seems that with 2 muffler that one would fit and wouldnt have to cut the firewall. Oh well just my luck at least i dint have to cut all the way threw the firwall to get it too fit.

Is anyone else worried about the top of the firewall not having any support ? Just seems that if you had a hard landing ( heaven forbid) that the downward force from the wieght of the motor just might pull the firewall off ? A hard blender or parachute might even be able to jerk the motor off maybe ? Or did i miss something there in my kit and there was suppost to be more wood to the firewall instalation other than the tri-stock and firewall? Any thoughts ?


Chad