Pics of Stoptech big brake kit?
09-25-2004, 09:35 AM
#17
umm, you sure? Brembo's and stoptechs for all that I have ever seen
have the slots facing the other way. I still say you have them on backwards.
<img src="http://www.media-garage.com/rs4reps/images/06.jpg">
notice the slots are facing radially the other way.
<img src="http://www.media-garage.com/rs4reps/images/06.jpg">
notice the slots are facing radially the other way.
09-25-2004, 10:20 AM
#18
You have them on backwards...
ST have never cut the gas slots in the rotor to lean back. To do that would mean that the groove would run in the same direction as the vanes which would weaken the rotor. Despite not looking as, "cool" with forward leaning slots it is the RIGHT way to groove a rotor. I pulled this picture from the S4 manual, all of the cars which get 328mm & 332mm have their rotors built up off the same castings...the only differences model-to-model is the hats (black alum part) brakets and the caliper piston sizes.
<img src="http://pictureposter.audiworld.com/227/st_rotor.jpg">
Send ST a picture and see if they still say they're on the right way. I sent your post to the president of the company, I'll share his response when I get one. However I know what the response will be with 99.9999% certainty. Unless they made a change recently...which is HIGHLY unlikely you have your rotors on the wrong sides of the car, you need to swap left and right.
Regards,
James R.
<img src="http://pictureposter.audiworld.com/227/st_rotor.jpg">
Send ST a picture and see if they still say they're on the right way. I sent your post to the president of the company, I'll share his response when I get one. However I know what the response will be with 99.9999% certainty. Unless they made a change recently...which is HIGHLY unlikely you have your rotors on the wrong sides of the car, you need to swap left and right.
Regards,
James R.
09-26-2004, 06:35 AM
#20
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Yep, you're right! They're backwards- I'll have the shop swap them.
I emailed Robert at Stoptech and he wrote back with this response and a couple of pics:
David,
I was alerted to the thread this morning. Sorry but your shop got them
wrong or they were labeled wrong. The "left and Right" sickers are meant
to reference driver's left and driver's right. In any event I am sorry
for the embarrassment.
The directional vanes always sweep toward the rear of the car. Our
slots are always opposing the direction of the vanes. If the slots go
in the direction of the vanes it weakens the rotor. The way a
directional rotor works is as a pump, pulling air front the center of
the rotor and throwing (or pumping) it out the edges of the rotor. The
internal directional vanes should not face the front of the car as the
on rushing air would oppose the exiting air.
Here is a photo of a drilled cut away and one of a slotted rotor.
Best regards
Robert E. Lee
General Manager
StopTech LLC
Phone 310-325-4799x106
Fax 310-325-6627
www.stoptech.com
OH WELL- You live and you learn. Im glad we found out they were on wrong. Thanks for all the help and persistance with the backward rotors. On Monday the rotors are being switched.
David,
I was alerted to the thread this morning. Sorry but your shop got them
wrong or they were labeled wrong. The "left and Right" sickers are meant
to reference driver's left and driver's right. In any event I am sorry
for the embarrassment.
The directional vanes always sweep toward the rear of the car. Our
slots are always opposing the direction of the vanes. If the slots go
in the direction of the vanes it weakens the rotor. The way a
directional rotor works is as a pump, pulling air front the center of
the rotor and throwing (or pumping) it out the edges of the rotor. The
internal directional vanes should not face the front of the car as the
on rushing air would oppose the exiting air.
Here is a photo of a drilled cut away and one of a slotted rotor.
Best regards
Robert E. Lee
General Manager
StopTech LLC
Phone 310-325-4799x106
Fax 310-325-6627
www.stoptech.com
OH WELL- You live and you learn. Im glad we found out they were on wrong. Thanks for all the help and persistance with the backward rotors. On Monday the rotors are being switched.