How To Add a 40mm Cooling Fan to Tamiya M03 Mini
Small fans are often used on Radio Controlled Cars, for cooling speed controls, or motors.
I was running a 30mm 3 Racing fan on my Tamiya M03 Mini, and I recently ’stuck my finger through it’. This is common occurence, where a misplaced finger causes the fan to break.
I had repaired it with superglue and it had been okay for a meeting or two.
In one run though, I felt I was down on power, and I reckon it’s cos the fan broke again, and end up looking like this…
Broken 3-Racing 30mm Fan
I think that was enough to jam it, and cause an increased power drain on the batteries, and hence a reduction in power to the motor, slowing the car.
Time to replace it, I wondered if there was a way of fitting a larger, 40mm fan in a similar place.
After some measuring, a failed attempt at a mounting bracket, I came up with a small bracket that mounts a 40mm fan above the motor.
40mm Fan and Bracket
The bracket is a simple piece of aluminium angle, with two M3 bolts securing it to the fan, and one M3 bolt securing it to the chassis.
Simple and neat. A 40mm fan is more effective and stronger than a 30mm fan.
Written by simon.
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