So I've been out of RCs for several years but I just picked up a Slash to start some low buck racing. I have my old Lynx 3d that I wanted to install and run rather than the Traxxas radio, but when I hooked it up I couldn't get any throttle response.

I don't think there is an issue with the receiver as I was able to hook up the ESC on either channel 1 or 2 and the steering server would respond either way (through the wheel when the ESC was on chan2, or through the trigger when the ESC was on chan1).

It looks like in the 6 years its been sitting, the transmitter battery has lost a cell or 2 as when I switch it on the low voltage alarm is on and the voltage on the LCD drops pretty quickly to around 8v.

While all that is happening, the servo will respond fine to inputs. Is the radio smart enough to kill the throttle response because of a low voltage on the transmitter, or does it sound like some other issue. I don't want to go by new batteries for the Tx unless I'm pretty sure that is the problem. Trying to keep things cheaper this time around and I'd rather just use the Traxxas radio than spend a bunch of money chasing an issue down on this older radio. If I can fix something simple to use my old go-to that would be awesome.

Any help you can offer would be greatly appreciated.

Hey BGRedJeep,
Did you remember to re-calibrate the ESC when you installed the new radio? Also, check that your EPA's are turned all the way up. The fact that the servo worked in both channels tells me it is not the radio. You can get a new battery for your radio, p/n 54115. 1600mah NiMH.

All the EPAs were at or above 100%. I tried reprograming the ESC but couldn't get any throttle response. Any chance the wires on the XL5 ESC are not in the right order for the hitec RX?

Thanks for the response. I'll re-check everything when I get a chance. I can only stand the Tx beeping at me for so long at a time..

I got it working today. First I was able to sort out the battery issue by robbing some parts off the battery tray from an old futaba Tx which allowed me to install some rechargeable AAs I had. Once I got the power worked out I hooked it up again and tried about 5 times to program the ESC and it finally came to life.

I'm glad I don't have to use the Traxxas remote any more. This Lynx feels much better in my hands

Thanks again for your help Billy.

is p/n #54115 still available for purchase. my nicd 600 mah is annoying since i have to keep it on the after each heat.

54115 is still available on the market.