RC10Talk - The Net's Largest Vintage R/C Community

Hello all! I just joined, and I am getting back into my RC cars.

I have an original Team Associated RC10 World Championship edition that I bought in 1990, and I'm trying to update it a bit. A few years ago I put in a Flysky receiver, and I have some Powerextra 7.2 3600 mAh NiMH batteries. The ESC is a Hobbywing. Typical stuff, nothing fancy. But I just recently bought a new Reedy Radon 2 17T motor. When I installed it and ran it, I got about one minute of performance, and then my battery started dying already. This was shocking. Up until then I had a Reedy Firehawk motor that worked just fine and I could get 15 minutes or so of runtime (approx, honestly I never really timed it).

It was quite startling how quickly the performance dropped off a cliff. How can I start to diagnose this problem? Or am I doing something so wrong here that you all will tell me I'm an idiot?

Hi and welcome.

Have you tried more than one battery charge / run and gotten the same result more than once with the Radon 2 motor? Is the motor or battery unusually hot? does the motor seem 'fast enough'? If not, maybe the pos and neg leads are switched (running motor continuously in reverse direction of timing advance can have issues). Got any pictures?

Just a thought...but, I think the Firehawk was a 27T stock motor...and you've made a big jump to a 17T modified. I'd say check where the timing is set on the Radon and if you're trying to use the same pinion and spur as stock...you're gonna need to change that.