Mmm that’s fair but it’s so hard to leave the plushy ride! Especially here in Texas with crappy roads. I still have confidence in them so I’m going lower motor min and hope for the best.
Honestly though, I was thinking why not create a sleeve with small blades on it. Effectively, it would become a heat sink and if you angle the blades such that they become fans blades, it’d be even better at cooling.
There was some good info on this over on a different thread. Essentially:
Out of the factory the heat builds on the stator and not the Can
Better thermal conductivity can be had by pulling off the drives and re-seating against the hanger using some CPU thermal compound. This helps use the hanger as a bit of a heat sink for the stator.
Others have tried to add some Statorade into the motors directly which helps move some of the heat from the stator out to the Can, where the increased surface area can help move the heat away. The black magic here is knowing exactly how much to use so that the level within maximizes heat transfer without notably affecting performance. If this can be successfully done on DD, then a thermal sleeve (as you mention) might be a great match.
I will try to track this info down if I get a moment. I have a week or so before I will need to cross this bridge, but I’ll make sure to document on my build thread.
There are more good things tham bad with these drives i did have to drill out some of the hex screws on the outside can to get them apart.i will retap them and use larger hardware.
My motor bearings were rusty, i didnt have replacements so i soaked them in speed cream for 24 hours. They are much better but will order replacements. Noise is gone. If you havent oiled your bearings do it now!!!