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07-16-2005 #1
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How long should my wheelstuds be?
I just finished putting my disc brake conversion on...its not a kit, it was pieced together. After putting the rotor on the legth of the stud remaining is slightly less than 1". I would call it 15/16". Where can I find information on how long I need them to be in order to fit properly/be safe?
Currently I have Weld wheels and lug nuts. It looks like they will bolt up no problem, but I dont think it means it will be safe if they are in deed too short.
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07-16-2005 #2
Starting The Transformation
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IMO, if you used open end lug nuts, you should have enough that at least a couple threads come out.
'72 Chevelle- 4 wheel 12" Discs, Konis, Hotchkis springs (shortened an extra coil up front), 17" Cragar Soft 8's with 245's in front and 275's in back. ---STILL IN PROGRESS---
07-16-2005 #3
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To continue that definition..... it is thought that you should have atleast half of the diameter of the stud, portruding past the end of the nut itself.
So in other words, a few exposed threads past the end of the nut should suffice.
07-16-2005 #4
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I guess the problem with using that to determine if I have enough stud is that the lugs used with my Weld Pro stars are not open ended, they are mag shank style lugs. Its been so long since I took them off the car I cant remember if the studs ever were long enough to pass completely through the wheels. There is a washer between the wheel and lug. I dont have my camera available to send a picture at the moment. Here is a link to the wheels on jegs with an illustration of the lugs.
http://www.jegs.com/cgi-bin/ncommerc...35&prmenbr=361
07-17-2005 #5
Full Blown G-Machiner
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I believe that NHRA regulations require at least 1 1/2 times the diameter of the stud engagement within the lugnut.
07-17-2005 #6
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That is an accepted standard for minimum thread depth for tapped holes using machine screws. In your case, if you have 1/2" studs, you need 3/4" thread engagement.
Originally Posted by nancejd
So, how do you tell if you have a blind nut? Count the number of revolutions the nut spins before seating. For 1/2"-20 pitch studs, it will take 20 revolutions of the nut to engage 1" of thread. 3/4" x 20 rev/in = 15 revolution.VaporWorx. We Give You Gas http://www.vaporworx.com
07-18-2005 #7
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Following the advice I have been given here I am sure my wheel studs are long enough at just short of 1". The way the lugs work almost the entire length of the stud will be engaged. I will still count the revolutions when I put the wheels back on tonight.
THANKS A TON FOR ALL OF YOUR HELP!
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