Anyone know of a place where I can get custom cast iron brake rotors done?
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Feb. 11, 2010 10:19 a.m. 96DXCivic HalfDork
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Feb. 11, 2010 10:57 a.m. Keith PowerDork
It would probably be easier to have hats machined for a standard rotor ring. What diameter are you looking for?
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Feb. 11, 2010 2:44 p.m. 96DXCivic HalfDork
It is for a Formula SAE car. We are planning on running floating rotors. The hub pattern we are using is a 4x100mm. We are looking for a 10" diameter disc.
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Feb. 11, 2010 11:29 p.m. DILYSI Dave UltimaDork
Does it have to be cast iron? You could just laser cut them out of steel plate.
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Feb. 11, 2010 11:33 p.m. Keith PowerDork
Or cut down an existing rotor around the correct size - I've seen a stock 1.6 Miata front rotor turned into a two-piece. 1994-00 Miata front rotors are 10" vented, rears are 10" solid. Either will cost you about $10 at NAPA.
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Feb. 11, 2010 11:42 p.m. Giant Purple Snorklewacker SuperDork
Checkout the Wilwood catalog. You can mate a rotor diameter with a hat of almost any combo. I have also had excellent, patient response from calling them and asking ridiculous questions.
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Feb. 11, 2010 11:45 p.m. nocones Reader
We used A2 tool steel for our rotors. We made Hats out of aluminum and machined the dogs out of regular mild steel. Just get them water jet or lazer cut.
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Feb. 12, 2010 6:45 a.m. 44Dwarf HalfDork
There out there off the self. Peter D Motorsports in AZ has alum hub with floater disks. There are likley a few others too. Checked his site i can't find'em but i know i had a set on a dwarf cars rear axle a while back. You might be able to find some used ones on Dwarfcarracing.com as alot of clubs outlawed alum in any bake parts to hold cost down...
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Feb. 12, 2010 7:59 a.m. njansenv Reader
I'd consider looking for (used?) motorcycle rotors, and machining a hat.
Nathan
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Feb. 12, 2010 8:23 a.m. AngryCorvair SuperDork
njansenv wrote:
I'd consider looking for (used?) motorcycle rotors, and machining a hat.
Nathan
that's what i was gonna say.
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Feb. 12, 2010 8:43 a.m. Joe Gearin Associate Publisher
Check out www.Racingbrake.com They have custom fit rotor disks and hats.
Or check out their ad on page 108 of the April GRM.
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Feb. 12, 2010 9:27 a.m. Keith PowerDork
The biggest problem is going to be finding an off-the-shelf rotor ring that's only 10". Most of them are 11" or larger.
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Feb. 25, 2010 10:11 a.m. 96DXCivic HalfDork
That is problem I am coming across. I am going with cast iron because it provides the best thermal properties. Also the caliper we are going to be running takes a .38" thick rotor.
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Feb. 25, 2010 10:31 a.m. BuddyJ New Reader
The year my team won the Continental Tevis brake system award, we made our own floating rotors. Ductile iron rotors in aluminum hats. Make your own.
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Feb. 25, 2010 11:55 a.m. 96DXCivic HalfDork
We are planning on making our own aluminum hats. From everything I have read grey cast iron is preferable to ductile iron.
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Feb. 25, 2010 1:10 p.m. amg_rx7 Reader
