How to..
 

Get an OS .61FX Mounted in a Funtana 40 using stock mounts? :eek:

RE: How to..
 

Not going to happen. By the time you get the 61 FX's crancase fitted between the stock mount, you will have filed away half of the mount.

Get a new mount and install new blind nuts.

RE: How to..
 

i originally put a 61 fx in mine, fitts extremely well, just have to re-drilled the firewall holes and make a bit of clearence for stock muffler if no pitts muffler is used...

RE: How to..
 

if u do not want to cut clearance for mufler and dont want to buy pitts mufler, u can also buy the muffler extention fron os, its about 10$, it fitts 61fx and 91fx as well... works perfect, but might have to change carb settings...

re-drilling holes on firewall, dont think is dificult, i even used the same blind nutts...

ps: in this pic, i rebuilt the landing gear mount and therefore i changed the clearence i made for the old mufler too, since it was not going to fit with the new 91 fx..

RE: How to..
 

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.

RE: How to..
 

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!!!