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Old 03-30-2012, 09:13 PM
mk4gti mk4gti is offline
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Default Mounting control box and controller on motor

Newbie here.... Not much space under the hood (ehh, "bonnet") to mount the control box and controller. However, there is tons of space directly above the motor for the control box and controller.

Question: Is there any problems mounting components on the moving parts such as the motor and tranny?

I plan on leaving some slack in the wiring for the forward/backward motion of the motor.
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Old 04-04-2012, 03:25 AM
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dtbaker dtbaker is offline
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Default Re: Mounting control box and controller on motor

I would not mount to the motor... too much heat and vibration for electronics.

You can probably find un-used weld-nut locations to construct a shelf spanning the engine bay. I'd suggest using non-conductive plywood, or plastic sheeting.


the last picture shows how much room I had left over after switching from lead to lithium... I may re-do my rack now that I don't need heavy steel rails to support the weight of two lead batteries!
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File Type: jpg 090223_compbox02.wmollies.jpg (51.4 KB, 4 views)
File Type: jpg 110313_front01.jpg (79.2 KB, 6 views)
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Old 04-04-2012, 08:21 AM
tomofreno tomofreno is online now
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Default Re: Mounting control box and controller on motor

I mounted a 1/4 inch thick aluminum shelf off the two bolts at the top of the adapter/transmission and a bracket bolted to the end of my motor. The shelf is around 4 inches above the motor. The charger with energy meter on top, relay box with battery heater controller on top, and DC/DC converter are mounted on this shelf. No issues over the last 2 1/2 years. As you said, leave slack for movement. The motor does of course radiate some heat, but it remains below about 65 C typically in summer, so not a lot. The controller, on the left is mounted off the motor end bracket, suspended over the passenger side "fender". There is a finned heat sink bolted to it underneath.
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Last edited by tomofreno; 04-04-2012 at 08:24 AM.
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