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Author Topic:   11" Rotors vs. 12" Rotors
YAR
Dirt Roller

Total posts: 7
posted March 15, 2002 03:51 PM
Can anyone tell me if there is any weight difference between 11" rotors and 12" rotors? I assume there is no weight difference between the two spindles.

autoshop
Dirt Full Roller

Total posts: 65
posted March 15, 2002 04:09 PM
1" worth

awkwardjeff
Dirt Freak

Total posts: 390
posted March 15, 2002 04:26 PM
I'm not sure about going from a 12 inch to a 11 inch.....I would think it's about 2 pounds.

I have wieghted a 11 inch Granada rotor and it weighted 18 pounds.......I then weighted a 9 inch rotor that I run on the front of my car and it was 14 pounds.....so 2 inches equaled 4 pounds..........

Jeff

c21
Dirt Maniac

Total posts: 122
posted March 18, 2002 12:34 PM
The spindles should weigh the same, but on rotors ... I think castings vary.
Last year I swapped back over from 12"x 1" rotors to 11" x 1" rotors (drilled out to 5 on 5). I expected a substancial savings .... but found it to be less than a pound each. Of course MOI (moment of inertia) will be slightly lower. Later I made up a set of spare rotors (slightly different looking casting, probably aftermarket) and they weighed a pound less each than the first set (of 11" rotors) I set-up.
Go figure

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