Yes, the wire brace on the tail wheel goes to the rudder.

I have 46fx with a quiet pipe on mine. It spins an 11x6 APC prop at just over 13K, running 10% fuel. It is plenty of power. A bit more than 1:1 thrust:weight. Without the pipe it would not have good vertical performance. Also, I put retracts in mine, making it a bit on the heavy side.

As I recall, there is a tendency for Tracer's to come out nose heavy. Plan accordingly. I put the rudder servo at the back, and made a compartment behind the wing to put the battery and receiver.

If I were building another I'd try to make it lighter (mine is 6 lb), and I'd get a Irivine 53 and a quite pipe. Maybe a light 4 stroke.


Here is a picture of the modifications required to fit a muffler, or header, under the fuse:

http://www.rcuniverse.com/forum/fb.asp?m=1305542

The picture shows a Jett muffler. I now have a header and Macs quiet pipe. I opened up the belly pan to create a pipe channel of sorts. It fits nicely.