Popular Post Hal Farrenkopf Posted May 14, 2020 Popular Post Share Posted May 14, 2020 (edited) After waterproofing the battery and replacing the mosfet heat sinking to mica insulators with paste, I wanted to increase the existing heatsink external heat transfer. I had this idea long ago but recently found a material that was readily available - vinyl step edging. All that was required was cutting it to shape, drilling a hole that was snug to the screw head and some black rtv silicone. As the wheel turns, it would fan air over the heatsink. There is very little clearance between the motor cover and heatsink except for the top part of the heatsink where the wheel screw heads are. I added fins to all the heads except the one by the valve. I haven’t done any analysis of performance but I know that it will increase air flow over part of the heatsink and likely all of it is improved. It’s vinyl and flexible just in case something gets caught in the wheel. The orientation is important in that aspect so that anything that gets caught will bend the vinyl flat or pulls it off. It’s only rtv’d at the screw head. As always, do at your own risk because there is an increased risk of things getting stuck in the wheel causing the wheel to stop turning suddenly. Edited May 14, 2020 by Hal Farrenkopf Added photo 4 Quote Link to comment Share on other sites More sharing options...
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