the antenna lenght is set by the manufacturer of the reeciever, so dont cut it, as far as how much plastic tubing you have, it just depends on how much range you need. When I run my micro, I keep in tucked under the body and have no problems, with all my 1/10 scale cars, it is nice to have that antenna up there for reception. Play with the lenghts if you like and see how it goes.
The length of the antenna is set to a harmonic of the wavelength that you're using.
The wavelength of a 75MHz signal (which we're using) is around 13 feet - by dividing that into harmonics (1/2, 1/4, 1/8, etc.) you get an antenna that resonates to the wavelentgh. That resonation is how the antenna picks up the signal.
If you change it, even by an inch or so, it can stop the resonation and that's how you lose the signal.
DON'T CUT IT.
If you already have, ask your LHS for some antenna wire, cut a piece that is longer than the original antenna was, re-solder this new one to your receiver and then trim it so it's exactly the same length as the original again.
What about the length of the wire sticking out of the top of the antenna tube? i have ran them with it just at the tip of the tube, and also draped over the tube and half way down again, secured with shrink tubing, couldn't notice any difference in reception or any glitching problems, how about anyone else?
demonstation on an xray
:first folt it over then rut it through the hole in the rear shock tower[in the middle]
:then cable tie it to 1 of the holes in the bulkhead
: put a condom on the end of the antenna[those little black end thingys]
:then be happy cos it wont loose signal or glitch
Last edited by pink pac man; 11-13-2004 at 05:17 AM.
Cutting my antenna ruined my car for weeks. Worse than that I couldn't figure out what was wrong.
I know it looks tacky to have an antenna sticking out of an otherwise great looking body, but it looks even tackier seeing your car slam into the boards because of a glitch.