2 Piece rotors? How difficult to make and what materials for the Hat?
09-29-2007, 03:47 PM
#1
Le Mans Master
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St. Jude Donor '03 & '05
2 Piece rotors? How difficult to make and what materials for the Hat?
I just so happen to have a real good machine shop at my disposal. The rotors that have aluminum hats and are fastened down dont look all that difficult to make. ANy one ever seen this done or know how?
I am looking at doing some C5 rotors for my C4.
Why, because they look cool and are a little lighter.
I am looking at doing some C5 rotors for my C4.
Why, because they look cool and are a little lighter.
09-29-2007, 05:24 PM
#2
Safety Car
Unless the machinist doesn't charge you for his time, it probably won't be cost effective. There should be something off the shelf that will work. Most hats are a common bolt pattern (at least the racing ones, anyway).
09-30-2007, 10:59 AM
#4
Racer
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Get a hold of Vector vette on the forum. PM him he has this already done with good rotors.
Chuck
or email me and I'll get a #
cmac75@att.net
Chuck
or email me and I'll get a #
cmac75@att.net
09-30-2007, 12:59 PM
#5
Drifting
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09-30-2007, 07:51 PM
#6
Race Director
I'm not sure if you are talking about making hats, or the rotors. If you could come up with some affordable hats for off-the shelf rotors, there could possible be a demand. However, both RB and Stoptech make pretty affordable bolt-on sets, and you only have to buy the hats once.
anyway, the only tricky part if making the "floating" hardware. Since the aluminum hat and steel rotor expand at differnent rates, all 2-piece rotors have floating hardwar. Some of oversized holes in the hat or rotor, with spring loaded washers. Basically, the bolts are "just" tight the load the washers and hold the 2 pieces concentric, but loose enough to let them expand independently. Some other setups use slots that the bolts go through, so the hat can expand freely in the rotor.
Anyway, for the C5/C6, I think RB and Stoptech have things under control. I've got a friend who has a Porsche that runs Colman rotors, and they are about $800 EACH. I'm sure he'd love to have some hats made that would work with different friction rings.
anyway, the only tricky part if making the "floating" hardware. Since the aluminum hat and steel rotor expand at differnent rates, all 2-piece rotors have floating hardwar. Some of oversized holes in the hat or rotor, with spring loaded washers. Basically, the bolts are "just" tight the load the washers and hold the 2 pieces concentric, but loose enough to let them expand independently. Some other setups use slots that the bolts go through, so the hat can expand freely in the rotor.
Anyway, for the C5/C6, I think RB and Stoptech have things under control. I've got a friend who has a Porsche that runs Colman rotors, and they are about $800 EACH. I'm sure he'd love to have some hats made that would work with different friction rings.
09-30-2007, 08:15 PM
#7
Actually not all two piece rotors are floating. While I prefer floating it is not necessary in all applications. The floating caliper on the stock corvette brakes is one of those applications where a floating rotor is not necessary. Solid mount rotors save a few bucks. I am currently using solid mounts on my race car (american iron) that has rigidly mounted 4 piston calipers. So far so good.
-V
-V
10-02-2007, 07:39 PM
#9
Burning Brakes
The floating rotor allows the rotor to expand vertically without deforming in the horizontal plane at the attachment point of the rotor and hat.