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Old 08-19-2015, 04:11 PM   #3001
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Just to give some insight/sneak peek at why we've just introduced the DynaPro 4 upgrade option for existing front kits... There's going to be even more reasons to switch to the DP4 soon as well.

Working with Wilwood on a custom DynaPro 4 for the rear of the car that matches the bias we want with correct piston size back there, but will take the same 7812 pad as the front. This will solve the issues we run into where the pad we want to run all around is available for nice and cheap for a front Wilwood caliper application, but the matching compound is either much more expensive or not available at all for the factory caliper in the rear.

Buy one pair of pads, it fits all four corners of the car. Oh, and rear pad life will be stupid good.
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Old 08-19-2015, 04:12 PM   #3002
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Originally Posted by ThePass View Post
Just to give some insight/sneak peek at why we've just introduced the DynaPro 4 upgrade option for existing kits... There's going to be even more reasons to switch to the DP4 soon as well.

Working with Wilwood on a custom DynaPro 4 for the rear of the car that matches the bias we want with correct piston size back there, but will take the same 7812 pad as the front. This will solve the issues we run into where the pad we want to run all around is available for nice and cheap for a front Wilwood caliper application, but the matching compound is either much more expensive or not available at all for the factory caliper in the rear.

Buy one pair of pads, it fits all four corners of the car. Oh, and rear pad life will be stupid good as a side effect.
God damn you. Now I have to spend $300 on calipers AND a rear brake kit
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Old 08-19-2015, 04:14 PM   #3003
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Buy one pair of pads, it fits all four corners of the car. Oh, and rear pad life will be stupid good.
You could rotate front to rear. Hmmmmm . . . .
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Old 08-19-2015, 04:24 PM   #3004
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Sounds like yet another thing of yours I need to buy.
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Old 08-19-2015, 04:25 PM   #3005
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You could rotate front to rear. Hmmmmm . . . .
Yep. You'd only need to bring one pair of spares to the track.. or if you forgot your spares and your fronts are getting low, just rotate pads front to back.

Anyways, this is the only place I've mentioned what's in the works. Carry on, just thought current caliper decisions being made might want to take that into consideration
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Old 08-19-2015, 04:31 PM   #3006
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Anyways, this is the only place I've mentioned what's in the works. Carry on, just thought current caliper decisions being made might want to take that into consideration
Thanks Ryan!
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Old 08-19-2015, 05:12 PM   #3007
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<p>Thanks a bunch Ryan! This is cool news.</p><p>My current plan is to try and find used dynapros. Otherwise get them through goodwin.</p><p>I won't be running this kit on the track until next season so I should have some time to wait for the rears to happen.</p>
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Old 08-19-2015, 05:16 PM   #3008
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I get similar taper with Carbotech XP-10s on an old-school 11" BBK with Dynalites. The XP-10s have a wear slot, and I change out the pads when the slot is gone.
Those were brand-new pads at the start of the weekend. I'm done with the Wilwood compounds for the track, I think.

--Ian
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Old 08-19-2015, 05:19 PM   #3009
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I've been looking at fitting dyanlites on the rear with some of the standalone mechanical parking brakes, don't know how nobody's done this yet.



My plan was moving dynalites to the rear, then buying dynapros for the front. I'll be making a m-tuned-esque-iesh bracket for fitting the 10.9" sport rotor under stock 1.8 caliper brackets temporally, from there making it fit the dynalite will be easy. Stupid little park brakes are as much as dynalites though, so it will be a minute, if ever...
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Old 08-19-2015, 05:22 PM   #3010
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<p>ThePass, will the special wilwoods have a parking brake too?</p>
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Old 08-19-2015, 05:23 PM   #3011
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I've been looking at fitting dyanlites on the rear with some of the standalone mechanical parking brakes, don't know how nobody's done this yet.
Unsprung weight is the main reason why not, two calipers on the back is pretty heavy.

FM has a parking-brake-enabled Powerlite caliper for the rear. It works reasonably well, you won't be doing handbrake turns with it, but it will hold the car in place. The downside is that pad availability is a bit spotty.

--Ian
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Old 08-19-2015, 05:27 PM   #3012
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That's entirely my point though, to be able to run the same pad compound f/r while still retaining a parking brake that could pivot the car should I so desire.

FWIW, I've read the powerlite has a hard time holding a parked car on an incline, not cool for a street car. Ofc I leave my **** in gear all the time, but still...

I doubt the little tiny half caliper parking brake thing really adds that much unsprung weight, either. Still has to be less than stock. Dyanpros weigh a pound more than dynalites, so dynalite + park brake < dynapro, or so I bet.
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Old 08-19-2015, 05:28 PM   #3013
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<p>I think that is added complexity that I personally don't want. 1.8 calipers on sport rotors if fine for me for now. If the goodwin solution has a parking break then fuckya bud lets do it.</p>
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Old 08-19-2015, 05:35 PM   #3014
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FWIW, I've read the powerlite has a hard time holding a parked car on an incline, not cool for a street car. Ofc I leave my **** in gear all the time, but still...
I have the powerlites on my car, in gear with the parking brake on is fine with the new cables. With the original cables if you tried to put it on that tightly it would pull the end off the cable.

--Ian
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Old 08-19-2015, 05:55 PM   #3015
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I doubt the little tiny half caliper parking brake thing really adds that much unsprung weight, either. Still has to be less than stock. Dyanpros weigh a pound more than dynalites, so dynalite + park brake < dynapro, or so I bet.
Snapped this just now. 0.2 lbs difference.


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Old 08-19-2015, 06:02 PM   #3016
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Interesting, I thought I had read somewhere that dynapros were ~1lb heavier than dynalites. Are you planning on adding a simple mechanical park brake like the powerlites?

Am I wrong in thinking SCCA kinda requires an emergency brake for certain classes? Probably something else I shouldn't make assumptions on, but I thought I'd read something like that?

https://www.sff.net/people/dburkhead/prepcompare.htm

This little chart says only prepared classes can remove the e-brake, is SSM above prepared?
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Old 08-19-2015, 06:03 PM   #3017
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<p>I'm going to venture out on a limb and say that the parking brake caliper weighs more than .2 lbs....but thats just me and my silly guesses.</p>
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Old 08-19-2015, 06:04 PM   #3018
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<p>Ryan, feel free to not answer any of the questions relating to goodwins product development cycle here in public, or at all. We're happy to take it to PMs/emails if that makes you more comfortable.</p>
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Old 08-19-2015, 06:55 PM   #3019
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Nothing to be uber secretive about - Not interested in rigging up a parking brake to the rear. If you need a rear parking brake, we already have that solution (hint: our rear V4 BBK uses factory rear caliper to this day because that rear caliper has a solid/robust parking brake).

I've run without a parking brake on a street car for years without wishing for one. That doesn't mean everyone will feel the same or that it will work for every class in every form of motorsport, but there is already an option on the market with a sort-of parking brake option on a wilwood caliper, no sense in doing the same thing twice.

I'm not a fan of the Powerlite caliper in the first place, and when we began designing what we really wanted in the rear for our track cars, we had a "wish list" formed over years of tracking and went from there based around the caliper we wanted (which didn't quite exist but we're working on it), with the priorities and focus of track use at the forefront.
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Old 08-19-2015, 06:56 PM   #3020
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<p>Yep, 1.8 caliper over sport rotor seems to be my best bet. I like a parking brake too much to get rid of it.</p><p>Maybe if this becomes a more track oriented car at sometime.</p>
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