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Dune Racer.

PostPosted:Wed Dec 27, 2017 9:01 pm
by Carnau
I just got my daughter a little dune racer (it is used) and I bought a new battery and fully painted, cleaned it ect...
It's really slow... Even for a 5 year old... I can walk and beat it.

Is it best to upgrade it to 24 volts?

Or is there a motor where I can get 20 or 30% more?

Thanks in advance.

Re: Dune Racer.

PostPosted:Thu Dec 28, 2017 6:46 am
by dlgg7
Have you checked the wiring going to the motors to make sure your getting full voltage on the high speed, 12v to each motor? I've got 2, and they were used also, so the shifter sits flat on the floor and I had to replace both switches in the shifters due to water getting to them. Test for the voltage getting to each motor with the speed at low, should be half of your battery voltage, and in high should be all of your battery voltage to each side. I have to jog to stay with mine!

Re: Dune Racer.

PostPosted:Sat Dec 30, 2017 5:01 pm
by wired
The "lil' dune racers" are 6v and only go about 2.5mph. The motors can't handle 24v (well not for long) ;) . If you have the 12v dune racer make sure the lockout screw is removed from the shifter so it can go into high (about 5mph). If you have the 12v version and need more speed I recommend going up to 18v with the stock electrical.

Re: Dune Racer.

PostPosted:Wed Jan 03, 2018 8:32 am
by lexx0116
wired wrote:The "lil' dune racers" are 6v and only go about 2.5mph. The motors can't handle 24v (well not for long) ;) . If you have the 12v dune racer make sure the lockout screw is removed from the shifter so it can go into high (about 5mph). If you have the 12v version and need more speed I recommend going up to 18v with the stock electrical.


Here is the picture of the locked screw location (shifter area) that wired was talking about:

Capture.JPG

Re: Dune Racer.

PostPosted:Wed Jan 03, 2018 5:23 pm
by wired
Thanks Lexx, Pictures always help :)
Way to start the year out with some teamwork!

Re: Dune Racer.

PostPosted:Sun Mar 18, 2018 4:47 pm
by Carnau
Ok so here is what I have done.
First I removed the set screw. Didn't change anything.
Next I removed the Shifter and cleaned it as best as possible and put dielectric grease on all the terminals. No change.
Then I took the whole thing apart and tested the voltage at the motors.
I have 6.9 volts on the left motor and 6.7 volts on the right motor.

What do you recommend next? If i walk at a normal pace I leave it behind. It won't let me upload images on here either for some reason.

Re: Dune Racer.

PostPosted:Tue Mar 27, 2018 9:46 am
by Ron_J
I'd start with a process of elimination. Check the voltage out of the battery. Then on both sides of the switchs. Must be losing voltage somewhere.

I just added a 6v to my grandsons to make it a 18v and it was pretty easy. He hasn't got to try it out yet, but the spin test in the garage makes it seem like a nice improvement.