Love how nicely that lined up
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(time to pop that cherry. First post 
) thanks for getting this rolling @Venom121212
What’s the general rule of thumb for when to add a heat sink?
I’ve been riding without one for a while but it hasn’t been too hot out and I haven’t pushed any boundaries yet. 12s5p p42a mtb.
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Welcome!
VESC tool’s mosfer cutoff start temp is 85°C and hard cutoff with a fault thrown is at 100°C by default.
Personally, I don’t like a hard fault being thrown so I raise that one up to a temp I’ll never hit. Cutoff start temp I abuse and let the esc get too hot so I won’t share my number just yet 
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If you start thermal throttling you know it’s time for a heatsink
If you have telemetry it’s easy to see, but for me, it was blatant throttling on my GoFoc retro lol
The power cuts way down
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3d printed top plate made for dual ESCape heatsink
yes i broke my METR antenna 
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Recently did a repair on a heatsinked enclosure I bought second hand:
Still need to hit it with some paint!
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Man I remember seeing this one and loving it. Falling in love all over again 
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Thanks! I’m quite proud of it,
maybe someday i’ll buy a new unity and i’ll trim down the extra antispark’s cm,
that would look a lot slimer on the board
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Can you share the STL for that?
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Yeah, I’ll try and remember to stick it on thingiverse this evening.
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Thanks! Your fix is 
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How are you (and the others) sealing around the fins on the heatsink?
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My heat sink has a big lip that the screws screw into, I just slap some black rtv silicone on the enclosure and a little on the heat sink. Once it is in place, I’ll run a bead around the edge and smooth it with my finger.
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