I'm curious about antenna routing, too.
My Cen Matrix R2 came with a fairly long antenna tube; most of the antenna wire fit in it with just a little extra to run around inside the receiver/battery box. I can see the antenna tube takes a beating in roll-overs and sometimes it gets abused when I'm working on the buggy, so I ordered a couple of spare tubes from A-Main. But the ones I got from them are much shorter than the tube that came with my car.
Is it best to leave the end off the tube and let the excess antenna wire hang out the top, or better to just keep the excess inside the receiver/battery box?
The R2 is my first foray into nitro cars. I've been flying R/C airplanes for many years (and proper antenna placement is very important with them).
Take it easy,
desmobob