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Search: Posts Made By: Dan Barnes@StopTech
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Forum: S4 / RS4 (B5 Platform) Discussion
03-19-2007, 07:32 PM
Replies: 16
Views: 309
Posted By Dan Barnes@StopTech

Unidirectional plies versus chopped carbon fibers...

The material we're using is a layup of unidirectional fibers in alternating directions. Kinda like an F1 chassis tub :) What you're seeing on the surface is the final machining cutting across the...
Forum: S4 / RS4 (B5 Platform) Discussion
03-19-2007, 07:26 PM
Replies: 16
Views: 309
Posted By Dan Barnes@StopTech

Costs vs. other stuff...

There was a bit in Autoweek a while back about one of the competitive suppliers working to get cost down.

Ours is a different technology, and so far it looks to be working a lot better than some...
Forum: S4 / RS4 (B5 Platform) Discussion
03-19-2007, 07:13 PM
Replies: 22
Views: 430
Posted By Dan Barnes@StopTech

One Lap was won overall for the last three years by...

the same car with the same StopTech 355mm ST-40 front kit.<ul><li><a...
Forum: S4 / RS4 (B5 Platform) Discussion
09-20-2006, 09:43 AM
Replies: 40
Views: 1,054
Posted By Dan Barnes@StopTech

Re: Responses in original thread linked here...

SpartanS4 has a 3600+ pound car with something approaching 60-40 weight distribution that's capable of a 12.4-second 1/4 mile. He's running a 332mm front-only kit. Notice the black anodizing on the...
Forum: S4 / RS4 (B5 Platform) Discussion
09-19-2006, 09:02 PM
Replies: 16
Views: 277
Posted By Dan Barnes@StopTech

Re: What kind of brakes doe stoptech sponsored/equipped race cars use during the race?

Most racers use slotted. One WC Touring Car team prefers drilled rotors on the front, for reasons other than durability.

We recommend slotted rotors for track use, due to their greater crack...
Forum: Motorsport Discussion
09-12-2006, 08:56 AM
Replies: 5
Views: 247
Posted By Dan Barnes@StopTech

Factory teams tend to stick with their OE...

Factory teams tend to stick with their OE suppliers. Give us a few years.
Forum: Motorsport Discussion
09-08-2006, 06:10 PM
Replies: 6
Views: 198
Posted By Dan Barnes@StopTech

Different Mr. Brock than designed the Coupe...

For those who might be confused, the unfortunately deceased racing driver is not the same gentleman famous for designing the Daytona Coupe. Not to diminish the tragedy at all, but those of us...
Forum: Motorsport Discussion
09-08-2006, 09:24 AM
Replies: 5
Views: 247
Posted By Dan Barnes@StopTech

Race proven?

Hattrick20,

It's nice to see you sticking to your same tune. At least it's consistent:

https://forums.audiworld.com/brakes/msgs/1405.phtml

StopTech makes brakes for production cars, not...
Forum: Brakes Discussion
09-07-2006, 04:55 PM
Replies: 94
Views: 22,237
Posted By Dan Barnes@StopTech

Controlling runout

In the ultra-high performance production-car world, as in racing, a two-piece rotor is attractive for several reasons, including reduced unsprung mass, rotational inertia and management of thermal...
Forum: Brakes Discussion
09-06-2006, 02:25 PM
Replies: 94
Views: 22,237
Posted By Dan Barnes@StopTech

Radial vs. axial float and knockback

This thread has included significant discussion of two-piece disc floating hardware designs and their relative merits in allowing radial float (which Gary Cogis called "room for expansion") and axial...
Forum: Brakes Discussion
09-06-2006, 02:20 PM
Replies: 94
Views: 22,237
Posted By Dan Barnes@StopTech

StopTech's response

Tomasz,

First of all, thanks for inviting me to respond, and thanks for noting your overall satisfaction with your StopTech kit.

<i>Tomasz wrote:
NO WASHING. StopTech wants you to wash...
Forum: A4 (B6 Platform) Discussion
08-30-2006, 12:39 PM
Replies: 52
Views: 798
Posted By Dan Barnes@StopTech

StopTech has nothing to do with ECS

No StopTech technology or design has ever been influenced by personnel interchange from ECS. None of our calipers are a monobloc design, and they do not closely resemble any Porsche product.

Each...
Forum: S4 / RS4 (B5 Platform) Discussion
08-23-2006, 05:10 PM
Replies: 17
Views: 415
Posted By Dan Barnes@StopTech

Front kit vs. four-wheel StopTech kit piston sizing...

Before the development of our forged ST-22 two-piston caliper, we had only our ST-40 four-piston caliper for rear upgrades. With a minimum piston size of 28mm, we were limited in some instances in...
Forum: S4 / RS4 (B5 Platform) Discussion
08-22-2006, 05:10 PM
Replies: 16
Views: 752
Posted By Dan Barnes@StopTech

The p/n discussed in the other thread has an...

The p/n discussed in the other thread has an internal mechanism, not the external ball.
Forum: S4 / RS4 (B5 Platform) Discussion
08-22-2006, 05:08 PM
Replies: 16
Views: 752
Posted By Dan Barnes@StopTech

We don't sell Speed Bleeders, MityVac, Motive Power, or anything else discussed here...

The original linked post was just relaying my own first-hand experience, supported by the interpretation provided by our Managing Engineer, Steve Ruiz, who was also involved.

The guy was using a...
Forum: S4 / RS4 (B5 Platform) Discussion
08-21-2006, 06:21 PM
Replies: 27
Views: 653
Posted By Dan Barnes@StopTech

Re: More on rotors and suppliers in the modern world...

QUOTE=BremboGuy
"It's your constant grouping of both companies in the same category that is confusing the consumers."

StopTech makes no claim about its capabilities versus those of your company...
Forum: S4 / RS4 (B5 Platform) Discussion
08-21-2006, 05:20 PM
Replies: 27
Views: 653
Posted By Dan Barnes@StopTech

Not the washer...a steel bolt threaded into a steel pin is different than what you linked...

The pictures in the post you linked to showed steel bolts threaded into anodized aluminum. The bolts were both backing out and sheared off. There was no way to tell which began first, but I'd guess...
Forum: S4 / RS4 (B5 Platform) Discussion
08-21-2006, 05:05 PM
Replies: 27
Views: 653
Posted By Dan Barnes@StopTech

The better people understand braking performance and technology, the better for StopTech...

because our product is technically correct. That's the basic idea behind publishing the technical information we provide. This isn't just external, it's internal. Bob Lee invested repeatedly to have...
Forum: Motorsport Discussion
08-21-2006, 04:39 PM
Replies: 13
Views: 5,272
Posted By Dan Barnes@StopTech

Either SS or plated, that's the one that fits our calipers. Can't comment on Tomasz' experience...

I've never seen a StopTech employee using a SpeedBleeder; we just do it two-man around here.
Forum: Chicago Discussion
08-21-2006, 09:13 AM
Replies: 24
Views: 529
Posted By Dan Barnes@StopTech

SpartanS4 has been in communication with us...

I have PMed Josh and spoken on the phone with him personally. He has also spoken with Jeff Ritter, our Sales Manager, and possibly Matt.

BTW, Bob is enjoying his well-deserved retirement. Steve...
Forum: S4 / RS4 (B5 Platform) Discussion
08-21-2006, 09:07 AM
Replies: 27
Views: 653
Posted By Dan Barnes@StopTech

Please don't paint StopTech with a competitor's failure. It's a totally different hardware design...

Alex at Stasis provided good service and took care of that customer immediately.

He also noted that an engineering change has been made to Stasis' product to prevent that from happening. That...
Forum: A4 (B6 Platform) Discussion
08-21-2006, 08:54 AM
Replies: 87
Views: 1,515
Posted By Dan Barnes@StopTech

Keep them rinsed frequently...

As long as salt and moisture are both present, the galvanic cell can be working.

I'd definitely pull the rotors off in spring after the last time the roads are salted and do a careful visual...
Forum: Auto Detailing Discussion
08-21-2006, 08:42 AM
Replies: 6
Views: 288
Posted By Dan Barnes@StopTech

Eagle1 made the Audi dealer acc. cleaning kit...

I've used Eagle1 All Wheel &amp; Tire Cleaner and really like it. Haven't had any issue with any painted surfaces.

I stopped using it on my SSRs though, because I noticed where the lip's clearcoat...
Forum: Motorsport Discussion
08-21-2006, 08:35 AM
Replies: 13
Views: 5,272
Posted By Dan Barnes@StopTech

Google "pressure bleeder diaphragm"

Google "pressure bleeder diaphragm"
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