View Poll Results: The red wheel stud is...
always the same stud.
9
39.13%
could be different depending on the balance of the hub.
3
13.04%
huh? Red stud? What red stud?
11
47.83%
Voters: 23. You may not vote on this poll
Show me your stud...
03-28-2006, 03:18 PM
#17
Race Director
The really funny part is we put the locks on the red stud like it is supposed to be, which is right on top of the valve stem? I always thought the lock and the valve stem are supposed to be 180' apart...maybe only on the Cup wheels and later?
03-28-2006, 03:31 PM
#18
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Yeah, Brian, the manual shows we did the lock correctly but the valve stem should be opposite it. Someone tell me how the position of a valve stem, which is balanced as part of the wheel and tire, could matter. Probably just artistic symmetry, but the manual shows the crest the opposite of convention. This seems like another silly bit of trivia.
03-28-2006, 03:53 PM
#19
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Originally Posted by Andrew Olson
Thanks Gretch... like pouring gas on a fire! 
Here is some more gasoline.....see anything interesting in the configuration of these C4 wheels? BTW, they fit the shark, the offsets are just fine....but they break some of the so called "rules" posted in this thread......hint, find the valve stem......
03-28-2006, 03:58 PM
#20
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This seems like another silly bit of trivia
Good Job Andrew!
What I want to know, is what makes the 17" wheel so differernt that it needs to be located 150 or so degrees from the "red" stud???
Gretch...duh...nuts between spokes..(
)Those were made after the 928 was out of production, so it's a wash.
03-28-2006, 04:05 PM
#21
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Originally Posted by 928ntslow
SILLY BIT OF TRIVIA!?!?! Is that what you think of the of all the "Did you know's"??? BILL, I am surprised at you to flagrantly refer to these very important DETAILS as "silly bits"!!!
Good Job Andrew!
What I want to know, is what makes the 17" wheel so differernt that it needs to be located 150 or so degrees from the "red" stud???
Gretch...duh...nuts between spokes..( )
Those were made after the 928 was out of production, so it's a wash.
Good Job Andrew!
What I want to know, is what makes the 17" wheel so differernt that it needs to be located 150 or so degrees from the "red" stud???
Gretch...duh...nuts between spokes..(
)Those were made after the 928 was out of production, so it's a wash.
03-28-2006, 04:35 PM
#22
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So were the spinners in your avatar......your point?
Yo yo..I tink dayz Fly!
LOL..I was actually referring to the C2's and all that is in print in the owners manual for the time. You have to admit...there MUSt be a reason for this info.
03-28-2006, 04:54 PM
#23
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Who knows, certainly not me..........I do adhere to the stated conventions when I have my C2s on the shark......
Re the C4 wheels, on the 996, they are fastened with bolts not studs and nuts......but the keyed security bolt seems marginally lighter than the other bolts.....what does that say about the balance of the rotating mass.....to my knowledge there is no counsel given in the manual as regards the placement of this security bolt. I have to go along with the logic that says since most all wheels are dynamically balanced off the car, the placement of the lugnut lock is irrelevant. It either unbalances the rotating mass, or it does not, based on its own weight as compared to the other lug nuts.....The physics seem straight forward.....
Re the C4 wheels, on the 996, they are fastened with bolts not studs and nuts......but the keyed security bolt seems marginally lighter than the other bolts.....what does that say about the balance of the rotating mass.....to my knowledge there is no counsel given in the manual as regards the placement of this security bolt. I have to go along with the logic that says since most all wheels are dynamically balanced off the car, the placement of the lugnut lock is irrelevant. It either unbalances the rotating mass, or it does not, based on its own weight as compared to the other lug nuts.....The physics seem straight forward.....
03-28-2006, 04:59 PM
#24
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Gretch - Nice! LOL!
Keith - I think the reason for all this info is the same reason why they told us 18" and 19" shouldn't be fitted to the 928... to confuse us. I guess this thread goes to show that the red stud is kind of a red herring. And to think all this time I've been worrying about it's orientation.
LOL!Keith - I think the reason for all this info is the same reason why they told us 18" and 19" shouldn't be fitted to the 928... to confuse us. I guess this thread goes to show that the red stud is kind of a red herring. And to think all this time I've been worrying about it's orientation.
03-28-2006, 05:03 PM
#25
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I believe valve being straight up is based on fact that RDK sensors are then at left and right sides. If wheel is dropped to brake disk during assembly sensors are not hit.
03-28-2006, 05:21 PM
#26
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Riiiiiiiiiiiiiiiiiiiight...............ahhhhhhhhhhhhhh ha ha........
How does that explain the frame configuration of a Porsche mountain bike then.......
How does that explain the frame configuration of a Porsche mountain bike then.......
03-28-2006, 05:55 PM
#28
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My 1993 17" cups have the sensors.
I am not a physics engineer, but the wheel lock and such shouldn't be that big of a deal because of the location proportionate to the center of the rotating mass. In other words, the "out of balance" is not far enough away from the center of the wheel to cause a problem.
Andrew ...Not sure if Porsche was going for the "Let's see if we can F*** with them on this one" routine.
All in all, I don't think anyone has ever come forward and said, "Ya know, I have spent thousands to get my wheels balanced and the car still hops like a rabbit down the road". I would think there are more folks who have not positioned their valve stems and wheel locks per the manual, than have. In this time, I have never heard anyone remarking that it was a problem.
HOWEVER........the car was ALSO designed to fly down the Autobahn at break neck speeds which we never (ever rarely) drive the car at these speeds or even have the ability to get them up to these speeds. Would this be Porsches intention with this "trivia bit" ?
Maybe one of the Euro guys could enlighten us.
I am not a physics engineer, but the wheel lock and such shouldn't be that big of a deal because of the location proportionate to the center of the rotating mass. In other words, the "out of balance" is not far enough away from the center of the wheel to cause a problem.
Andrew ...Not sure if Porsche was going for the "Let's see if we can F*** with them on this one" routine.
All in all, I don't think anyone has ever come forward and said, "Ya know, I have spent thousands to get my wheels balanced and the car still hops like a rabbit down the road". I would think there are more folks who have not positioned their valve stems and wheel locks per the manual, than have. In this time, I have never heard anyone remarking that it was a problem.
HOWEVER........the car was ALSO designed to fly down the Autobahn at break neck speeds which we never (ever rarely) drive the car at these speeds or even have the ability to get them up to these speeds. Would this be Porsches intention with this "trivia bit" ?
Maybe one of the Euro guys could enlighten us.