jhipps835

iTrader: (13)

http://www.rctech.net/forum/r-c-item...00-chheap.html

I bought me a JR radio. I just put in a Futaba servo for my throttle in my truggy. As soon as i start the truggy it starts revving up real high and if i didnt start it on my stand it would of just took off. Why is this happening?
I dont know which way to adjust the throttle trim. Should it be at 0 or something higher. Dont know if 0 is open or closed. Help would be nice

marccaracer

iTrader: (10)

Guessing you need to reinstall the servo horn to the middle more first then adjust the linkage correctly for your model. Last thing is to trim it out with the transmitter for small changes needed.

jhipps835

iTrader: (13)

Ok. But what about the trim? what should it be set at. It goes from 0 and up.
Does 0 mean the throttle is closed?

mfrosty

iTrader: (14)

0 in nuetral position, you can go +/- from there.

jhipps835

iTrader: (13)

Ok. So if i put it to zero it wont take off on me?

tc5 man

if u do add throttle trim only add about 2 notches fourward on the trim. and also make sure you have a little gap on the throttle linkage also .and get the servo horn stright as possible even use a little sub trim if needed

mfrosty

iTrader: (14)

Turn your electronics/radio on set all your trims (and sub trims if you have them) to 0. Then install your servo horns where they should be (which on your throttle your carb should be closed to the idle position, and for steering your wheels should be straight)

Now you use your trims to fine tune it.

jhipps835

iTrader: (13)

The carb should be closed. Ok. All the way closed?

mfrosty

iTrader: (14)

It should be closed as far as the idle screw will let it, which should be somewhere between .5-.7mm open

scwrod

iTrader: (2)

all the above and make sure the linkage is not stopping the carb from closing. (too Short)
Just take the time and go through the whole throttle setup.
Start with idle gap.
and go all the way to servo.