question for you learned fellas to express opinions on....
I need to control the oil cooler's fan motor on the unit I'm building and there's no temp sensor in the tank.
have found these on fleabay ...
the suggested installation method on these is a bit 'heath' to say the least.
They are however the only adjustable units I can find, so I can set it at say 60-70C

... the level gauge in the tank also has a thermometer built into it, so this'd be easily settable, where ever I want it, using the inbuilt thermometer, to cross check it's dial, which I'd be well surprised at, to find it accurate.
plenty of fixed 190-200F threaded sensors/switches I could screw into a spare port in the tank, but the temp is too high at 90C ... and can't find anything lower.

tank doesn't appear to be a pressurised item as the filler is vented.
Thoughts for installation would be to drill a plug with a sufficiently large hole to allow the larger diameter probe to pass almost fully through, then fill the hole behind it with JB Weld or similar and perhaps a little around the inner part where the probe exits the plug - 'volcano' shaped ..
maybe even countersink the inner end of the hole a little too ... might also tap the hole to help the JB key into the plug ....
what do you lot think of the plan and the adjustable unit .... and I know it's Ying Tong, yet again, but can't find anything like it in the UK

