"main cooler from an old failed Chromebook"
Excellent idea Andy👍
I've got 'dead' Dell laptop downstairs (long since forgotten the password anyway🤔).
Must have look inside it. I also have a few of the little mTroniks Marine ESCs.😊
Cheers, Doug 😎
BTW: Sounds like you have similar problems to the late great Stephen Hawking.
And no one would have ever dreamt of calling him a 'crip'!
PS Is that the ghost of ET drifting about over your ESC?😮