That works. I posted in another thread about using sentry monitor sw. It would let you graph amps versus temperature.
It would be much more responsive, as it measures right at the armature mosfets.
Might be fun to slide a water block in there and do some liquid cooling.
I can’t seem to find any long enough.
They make larger cooling plates. I have seen people make or buy them for their Amps used in car stereo stuff. I wouldnt think you would or should need that level of cooling. Me thinks if you have to have a water cooled controller base then somthing else may be wrong.
Oh totally.
On that same note though most people think something is wrong with me for driving this. 
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Continuing the discussion from Gem Cool Air Kit:
where can I get one of these heat sinks, the E Bay link is outdated?
Someone on the forum had recommended a company called heat sinks.com.
You simply measure out what size you need.
Only downside is you have to drill your own holes in the sink and add some metal to hold it down no biggie for the average DIY guy/gal
sounds like all you needed was this $2 switch. LOL