OK - of course I was eager to get some real measurements and today I tracked down an Omega IR temp sensor. Unfortunately I only had about 20 minutes in my schedule to play with it.
As expected, it is quite sensitive to minor aiming angle changes, and the longer you wait for the highest reading, the longer the other rotors have to cool off.
Here are the results so far:
Start (sitting for about 45 minutes after a 10 minute drive in about 30-35 degree F ambient)
LF 50 RF 48
LR 35 RR 32
One moderate stop from 50 mph:
LF 98 RF 106
LR 53 RR 54
3-4 minutes of city stop/go:
LF 283 270
LR 128 110
15 seconds of dyno braking - steady 30 mph
LF 450 RF 350 (poor aim?)
LR 280 RR 175
You can easily see the cooling effects since I started measured the rotor skin temp at the LR, working clockwise.
There is a fairly large degree of operator error I believe, maybe even 50 deg depending on the exact target.
OK - initially the temps are apart quite a bit, but not as much as I'd expected based on earlier observations. Flame away if you must. But I really think my normal 40 minute drive cycle is required first. And that is when I first noticed the larger temp differences (and again later today).
Either way - the car still stops like crap and pulls to one side.
I'm leaning towards a need for a complete bleed job. I can't really make solid conclusions until I test a friends CSVT driving the same cycle as me. And of course there is the possibility that all CSVT's just have way too much front bias (for track needs).
Ahh - some real data, six days later.
