What's the diameter of the motor and the inner width of the black cover. Substraction and division might suffice to get the sense of the gap between the motor and the case. Still not sure if the external cover will slide over thermal pad with sufficient pressure and without damage. Judging by the pictures looks like two layers of 2mm heat pad will not be thick enough to fill the space between the laminations and the external cover since the motor looks way smaller than the cover itself. Kinda seems like separate cover for the controller and with some heat sink directly on the laminations would be the proper way to go if one wants to ruin the designers intended look.Elinx wrote: ↑Sep 01 2019 7:12amWith 2mm pads I was thinking to build this with several layers.
First layer direct on the lamited steelcore, between mounting screws and end covers, the second layer around this first layer and mayby a third layer include the endcaps too.
I have ordered also some 2mm pads too, so I haven't tried this, maybe building like this the (or some) layers should be thinner.
The gap between the top of the motor and outer case can be solved with sticking a circular pad into the outer case.
For best conductivity there must be some pressure between the pads and outer case.
The solution to use conductive silicon putty is also a good one, because you fill all gaps at once when you put the outer case on the motor. Only I am not sure how the hardening process works if this putty is covered with foil and eventually the outer case.
https://www.makeitbuildit.co.uk/motor-h ... lhEALw_wcB
Or just find some unified standard BLDC motor with a proper aluminium housing since modifying something with accessories often turns out to be more expensive or less efficient. Even the original replacement motor is relatively less expensive than 12 W/mK thermal pads.
It has been said that normally silicon grease/putty works only when used in thin layer so that it can fill micro imperfections on otherwise even surface.
https://www.endless-sphere.com/forums/s ... sf=msgonly