Originally Posted by
Speakender
I have an RC truck that I got as a gift a while back and I was never able to get it working. Due to time and money, I haven't touched it for a while, but now I'm back at it.
I had replaced the motor and speed controller after some advice I got from this forums and some other places. I have two issues now.
1: When I power on the truck a light on the speed controller blinks and the front wheels turn jerkily to the right until they can't turn anymore. This happens automatically. The controller is off and has no batteries, so that's not the problem.
2: The controller doesn't work. The reason I know the controller doesn't work is because I took the truck to a hobby shop and they were able to get it running with their controller. I want to buy a new controller and radio crystals (right terms?) for less than $100. So I need some recommendations in this area.
I need advice and help. Thanks.
So you turn the car on with no transmitter (what you call controller)? That's why it freaks out and why the wheels turn. The receiver is getting no signal, so it's sending garbage to the steering servo, etc.
If your transmitter is bad, you need to buy a new one that matches your receiver, OR buy a new transmitter and receiver. "Crystals" were used in the past, though you can still buy some radios that use them. These days the most common (and most reliable) frequency is 2.4 GHz. If you have the cash, I would look for one of those. Plenty of inexpensive options, for instance you could get something like this:
http://www.amainhobbies.com/product_...SR201-Receiver
Or, if you have some more cash, you can step it up to something like
http://www.amainhobbies.com/product_...-Surface-Radio
But also look at options from Futaba and Airtronics, those are really good brands.