Quote:
Originally Posted by Ron Sutton
Hey Josh,
You don't need 16" rotors. I have designed brake systems with 5500# total braking torque utilizing 11-3/4" rotors front & rear. The main reason to increase rotor size is to increase the thermal capacity of the rotors to survive long races.
I never run a rotor larger than needed, because the rotational weight KILLS performance. It adds to unsprung weight ... making the suspensions job of controlling that wheel harder. And it adds to the rotating weight. Not only is the rotor heavier ... but you're moving it out on a bigger radius.
I cringe when I see guys spend $1200 a wheel to shave 2-4# off ... then add rotors that weigh 6-8# more.
I learned long ago, if we cool the rotor properly, we can run a little less mass in the rotor ... so it's lighter. For this advantage ... I make cooling the rotors a priority.
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Guilty as charged.
You see a lot of oversized rotors in the PT world because of the aesthetic value of filling the wheel. Many of us know better and still commit the crime.
I fell victim but reading this reminds me why I really wanted to run smaller rotors out back.
Quote:
Originally Posted by Ron Sutton
Hi Dave,
I have worked with AP calipers a LOT ... but I am not familiar with those part #s, other than knowing they're 6-piston calipers.
Two questions:
1. What is/was their intended design purpose?
2. Can you measure the piston sizes & we'll run some calcs?
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Technical questions for Flash, this should be good.
