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Old 01-15-2015, 05:36 PM   #21
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Originally Posted by OGRacing View Post
nobody is really hitting on the point of how to slow a 1500lbs 500-800hp vehicle..
In a hill climb? Plenty of options. Rocks, trees, spectators...
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Old 01-15-2015, 05:46 PM   #22
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I theory the radial mounted will be stiffer since the studs clamping them to the bracket should flex less than the ears of a lug mount. In reality if your brackets are the same material and ~thickness as the ears its probably not as much of a difference as it could be.
The differance in stiffness with the dynapro radial over the dynalite has to do with the portion of the caliper Geometry that attaches the two halves of the caliper together. the dynapro radial raps around the circumferance of the rotor further uses larger bolts and has larger spacing between the two bolts holding the caliper halves together providing a larger moment arm to resist flexing. The radial mount itself isnt the deal. It is a larger caliper that is stiffer at the expense of weighing a bit more. as a side benifit it occomodates thicker pads that have the same surface area so they last longer and has a better radial clearance.
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Old 01-15-2015, 05:47 PM   #23
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Bob I know this. I was talking about dynopro radial vs dynopro lug.
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Old 01-15-2015, 05:57 PM   #24
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Originally Posted by Leafy View Post
Bob I know this. I was talking about dynopro radial vs dynopro lug.
I urge you to look at the Dynapro radial vs the Dynapro Lug. the lug caliper looks nothing like the radial and does not have the same features that make the Radial mount a better caliper. note larger cross bolts and larger cross bolt spacing, radial clearance. These werent even started from the same geometry in the design process it looks like to me.





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Old 01-15-2015, 06:39 PM   #25
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In a hill climb? Plenty of options. Rocks, trees, spectators...
the answer to the best brakes for miata uprights is hans device.
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Old 01-15-2015, 08:20 PM   #26
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I believe radial mounts get their extra flex strength from the bracket. By the time you hollow out a caliper for pistons etc there is not much strength left in the body. The inside edge (closest to hub) is the weakest part. Through bolting a hunk of material to one side dramatically increases the flex resistance of that side. If you look at radial flex videos you'll notice the radial mount side stays put while the outside flexes.

The only potential concern would be how that one side flexing affect wheel bearings etc.

I am still running the wilwood dynalights. I welcome a new caliper that does not flex as much. Maybe Stoptech will release their new one this year.

Last edited by k24madness; 01-16-2015 at 01:08 AM.
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Old 01-15-2015, 09:43 PM   #27
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Nobody yet has come out with an aftermarket production kit yet that is better for a High hp and heavy miata that easily fits in most commonly used 15" miata wheels.
The kit I referenced in post 2 should fit this description.
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Old 01-15-2015, 11:12 PM   #28
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Old 01-16-2015, 04:21 AM   #29
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The kit I referenced in post 2 should fit this description.
No pictures, no description, no add to cart button, no confirmed in stock ready to ship = nobody yet. It's going on 9 years of nobody having a better kit.
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Old 01-16-2015, 12:05 PM   #30
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Originally Posted by k24madness View Post
I believe radial mounts get their extra flex strength from the bracket. By the time you hollow out a caliper for pistons etc there is not much strength left in the body. The inside edge (closest to hub) is the weakest part. Through bolting a hunk of material to one side dramatically increases the flex resistance of that side. If you look at radial flex videos you'll notice the radial mount side stays put while the outside flexes.

The only potential concern would be how that one side flexing affect wheel bearings etc.

I am still running the wilwood dynalights. I welcome a new caliper that does not flex as much. Maybe Stoptech will release their new one this year.
Generally the reason manufactures do radial vs lug mounts has nothing to do with strength. it has more to do with cost and packaging. if you have a very cheap caliper and you want to make it so it's cheap to use, go lug mount. a radial mount is used for a more expensive caliper. that way you can make it fit a wide range of applications.
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