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Old 05-16-2015, 11:53 PM   #21
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Originally Posted by ThePass View Post
Apples to oranges.

The following is of course all things that you know, but for clarity purposes for those following along...

The wilwood standard rotors are straight-vane, made in China, low-cost rotors. Easy to acquire, easy on the wallet. Not comparable to a high-grade motorsports rotor though.

The approach with the GWR BBK was to offer the most bitchin' rotor possible - hence, on Version 4 of the rotor now (10 attachment points, kangaroo paw "vanes", ideal iron composition), and most owners get many, many years out of one set of rotors and we've had zero reports of rotor coning, premature failures, etc. that are far more possible with budget rotors.

There IS a high-quality replacement for the wilwood 8-bolt 11.75" friction ring. It's from PFC and it's ~$200 per ring. That is an apples to apples comparison with the V4 friction rings from DBA. Obviously, rotor diameter differences apply.

-Ryan
The rotor diameter is a big part of the advantage of the trackspeed kit IMHO. Because the wilwoods flex having a larger rotor diameter means less hydraulic pressure (ie less flex) per xxx pounds of wheel torque. My maths says 10% less. That should help those little wilwoods quite a bit.

Love the DBA's though. Would rock them if there were a 11.75" version.
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Old 05-18-2015, 12:33 PM   #22
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Originally Posted by k24madness View Post
The rotor diameter is a big part of the advantage of the trackspeed kit IMHO. Because the wilwoods flex having a larger rotor diameter means less hydraulic pressure (ie less flex) per xxx pounds of wheel torque. My maths says 10% less. That should help those little wilwoods quite a bit.

Love the DBA's though. Would rock them if there were a 11.75" version.
the rotor diameter doesn't pay a roll in caliper flex. a dynalight caliper will flex the same amount @ 200* on a 11 and 11.75" rotor.
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Old 05-18-2015, 02:15 PM   #23
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the rotor diameter doesn't pay a roll in caliper flex. a dynalight caliper will flex the same amount @ 200* on a 11 and 11.75" rotor.
But the force required to flex that caliper generates more braking force on the larger rotor. The same caliper on the larger rotor will require less pedal pressure to achieve the same braking force, and thus the caliper will flex less.
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Old 05-18-2015, 03:13 PM   #24
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Even 6uls need 5mm spacers.
Not mine. 15x8 6uls fit over my 11.75 V8 Roadsters kit (same as 949 Racing kit) with zero spacers and room to spare. Even my little 15x6.5 Rota Slipsteams fit with only a 5mm spacer. But that's a different tophat and caliper mounting bracket than TSE uses, so the spacing may be different.
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Old 05-18-2015, 05:05 PM   #25
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But the force required to flex that caliper generates more braking force on the larger rotor. The same caliper on the larger rotor will require less pedal pressure to achieve the same braking force, and thus the caliper will flex less.
yes i guess. but a larger rotor isn't necessarily a fix for a flexy caliper.

that's kinda like... your an ugly man so you buy a super car to pick up chicks, but everyone knows a puppy is far more effective lady slayer.
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Old 05-20-2015, 09:32 AM   #26
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yes i guess. but a larger rotor isn't necessarily a fix for a flexy caliper.
It's not so much a "fix" but a significant benefit of the 11.75 kit over the 11" versions. I suspect that's a big part of why my pedal feel got so much better.

Add to that lower rotor costs and longer pad life. The TSE 11.75 kit is a no brainer!
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