Quote:
Originally Posted by u/Josh
Thanks for this 
Two things from this. First, It's interesting that the max braking force doesn't align at all with the max gain (although in hindsight maybe this should have been obvious). And second, if you were to plot simply the highest braking force per lap, you would see it increase for the first three laps, and then decrease for all of the rest. I think maybe that is evidence of your fade. Cool stuff. |
If you look at a brake pressure plot, you'll see a few hundred psi of variation across a braking event due to pedal modulation. That's why I took the average, which is plotted on that first one I posted as that thin gray line. By "braking force" do you mean the line pressure, or the resultant deceleration?
Quote:
Originally Posted by stugray
Does your datalogger accept innovate serial data input?
I use the innovate TC-4 (sitting here with one in my hand) and it reads 4X thermocouples.
A roll of TC wire would be relatively cheap to run one to each caliper.
Have you at least tried the temp sensitive caliper & rotor paint that indicates max temps? They have stickers too.
It doesnt give you realtime data, but it will warn you if you have overheated or are getting close.
If you get the caliper temps above some critical temperature (400 F rings a bell but dont quote me) , you ruin the seals and the pads wont retract.
Then they drag and overheat more frequently (thermal runaway).
Are these runs with ABS completely disabled?
My experience of max braking of .8 Gs is in a car without ABS.
It would be interesting to see one of your plots with ABS and one without.
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I don't believe it accepts RS232 input as well as OBD. I think it's either/or. I've got some of the Aim TC Hubs I'll be installing on the car in the very near future. I'm planning to use them for tire temps for a few tests, but after I get enough tire data, I'll use them for other temps like diff, brakes, etc. Thermal stickers will be going on the car shortly.
ABS wasn't disabled, no. Just the "pedal dance."