ORIGINAL: seanychen
FKY1000,
Wow, that's some serious looking muffler. I think a Pitts muffler will not fit inside the cowl either, as there's not much room below the engine inside the cowl. This cowl really is only good for inverted mounted 4-strokes, and perhaps a side-mounted small-case 4-stroke like YS 63.
I have a TT 61 Pro sitting around, and my Funtana 40 is also sitting around w/o flight pack. I haven't bothered to tailor the F40 for the TT61 yet.
well, that muffler is the one for the 91 fx, i put a 91 fx in it and toke the 61 fx out because the 91 fx s the same mounting dimensions, size and weight as the 61fx, so a lot more power for the same weight and size wouldnt heart.....
if u chose to use the muffler extention, the entire muffler will be out of the cowl (there are 2 extentions, short and long; i used the long one, it extends the muffler 3.5cm or 1.37'')..
but if u chose to use pitts muffler, u may need to make a big hole in the bottom part of cowl...
well, have fun and be save guys!!!