LRP Sphere Problem

[chris_exeter]

Hi guys, I had a problem when practising with my car last weekend with what I assume was a speed controller problem.

I ran the car for about 15-20 minutes using 2 batteries. Halfway through the second battery the car just died. The steering servo would still work but there was no throttle. To start with I would get a small crawl for about 5 seconds and then no throttle, after a while there was nothing at all.

When I gave it some throttle, the green led on the speedo would come on which I assume means its trying to send power to the motor.

I checked all wires and they were all definitely connected.

I assumed I had a fault with the speedo. I just went to check the car this evening and it's all working fine again!

It wasn't a battery issue as the same battery used just worked in the car now with no further charging.

Has anyone encountered this problem before and does anyone know of any ideas to prevent it in the future?

My guess (which is rather weak due to being a newbie) was that the speedo cut out power to the motor for a precaution - I haven't attached the heat resistor to the speedo yet so it gets quite hot (only a 1 star motor though so I thought no resistor would be relatively safe).

Is this possible? This was the first time I had run the car for such a long period (previously the most was a 5 minute race).

I used to race 15 years ago, but have very little knowledge on brushless systems. Obviously I don't want to blow up a £200 setup.

Am I safe to run for 20 minutes solid?

Thanks in advance guys