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View Full Version : k1 keeps overheating my motor

jamesscott32
19-09-2015, 09:48 PM
Hi this is my first proper 4wd buggie.
I got it yesterday secondhand with a hobbywing 120a speed controller and a 10.5t motor an it cut due t over heating.today I put in my speed passion controller an 7.5t motor and it just keep cutting out/overheating.Seems OK just going round half throttle but when you start to open it up etc it just overheats/speed controller cuts it off.
I tried a thew different pinions an non made a difference.
The belts feel tight but I don't if they are over tight
wingers
19-09-2015, 10:15 PM
Check the gearing against the motor manufacturer recommendations.

Wingers
lost?
19-09-2015, 10:17 PM
The belts feel tight but I don't if they are over tight
how tight?
maybe try loosening them off a bit? tight belts can cause overheating.
KentH
19-09-2015, 10:45 PM
hi jamesscott32

Try to remove the pinion, turn the spur and feel for itīs free or some is to tight, if its nice and free, then it might be your ESC/Motor thats the problem
36racing
20-09-2015, 03:18 AM
Also, if it isn't the belts it would be worth checking your drivetrain is nice and free and not having strain from say a bust bearing etc.
dpackster1980
20-09-2015, 07:04 AM
With the kit spur there's little choice of what pinions you can use. I run a 6.5 on a 22 pinion but if you're trying to run larger then it could be the mesh is too tight.

I was running mine and over jumped a jump landing hard causing the motor to move slightly causing the mesh to go slightly tight. After the run the car was stinking hot, nearly cooked the motor.

I run the belts loose if if they're like banjo string then that will be a contributing factor.
mark christopher
20-09-2015, 11:25 AM
is your speedo running boost and turbo?
that will cause overheat and only effect on full throttle, right belts are right on any throttle position
lost?
20-09-2015, 01:02 PM
my moneys still on belts. :thumbsup:
washy13
20-09-2015, 02:08 PM
My first meeting back indoors and mines overheated 😩
paulainscow
22-09-2015, 03:50 PM
I lost 4 motors this year in my K1. Tried everything, gearing ratio, mesh, belts, etc

Turned out the be the neutral, forward and brake sync position between the handset and esc werent set correctly, which meant it constantly had a high drag brake, which is bad news it seems

Once these were set, it ran perfectly well