As many here know, I've had serious caliper heat issues over the years -- regularly melt caliper seals to the point of failure. Through a lot of work and a lot of "little" gains, I've managed to get it under control. We can talk some about that if you want -- pm me.
As to your specific question, we just used a pyrometer aimed at the caliper immediately coming off track. And we saw some nasty temps, for sure -- over 500 degress. Pyrometer seems to work, never tried the other stuff.
NC Region
1980 ITS Triumph TR8
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