It's a large plane. I'm playing with mufflers right now as I break in a new Brodak .40. I'm hoping to get a cool sound out of the twins.
The L.A. Heat should only produce about 12 to 15 pounds of pull.
with the two .40s. And now that I'm looking at it again I feel moved to get it done. It will probably be scary to fly it at first but I just know it will be a blast.
HI Frank,
Get some Z-Poxy to apply the .5 oz (5/10ths) FG. Z-Poxy is thin enough and works better than anything I have used. You *can* thin other epoxies with acetone (I prefer lac. thinner) but I get concerned about the strength when I do it for anything other than fuel proofing an engine compartment.
Randy had a true point about the lines. (2) 40s will require .021 per AMA rules. Windy has always been careful to stay under the limit (.77??) so that he can use .018s. He used "custom made" Ro-Jetts (under 40 sizes) in all his twins. Heck, (2) Magnum 36s (stock, cheap) would pull that thing through a Hurricane!
You still have time to make a change.