Wheel shanks and tech inspections?
Thread Starter
Joined: Nov 2001
Posts: 10,060
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From: Canton, GA
Wheel shanks and tech inspections? What is the ruling on stud length when using racing wheels and shanks that protect the studs?
Is the stud still required to protrude from the end of the shank?
Is the stud still required to protrude from the end of the shank?
Re: Wheel shanks and tech inspections? Per my 1999 NHRA manual. Page 18 listed under WHEELS in Section 1A Super Pro 7.50 to 11.99, Pro 12.00 to 13.99 and Sportsman 14.00 or slower classes.
Must be automotive type wheels suitabe for street use. Minimum wheel size 13" (unless originally equipped with smaller wheels and vehicle is equipped with original engine). Wheel studs must be threaded into the hex portion of the lug nut a distance at least equal to the diameter of the stud. Automotive-type wire wheels or motorcycle wheels permitted on front axle only of Dragsters weighing 1,800 pounds or less. See General Regulations 5:2
Thus, they DO NOT need to protrude out past the lug nut. The way I read it, if your stud is 7/16" wide then it has to enter the hex portion of the lug nut 7/16". If your stud is 1/2" wide then it has to enter the hex portion of the lug nut 1/2".
Good luck
Tom <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Must be automotive type wheels suitabe for street use. Minimum wheel size 13" (unless originally equipped with smaller wheels and vehicle is equipped with original engine). Wheel studs must be threaded into the hex portion of the lug nut a distance at least equal to the diameter of the stud. Automotive-type wire wheels or motorcycle wheels permitted on front axle only of Dragsters weighing 1,800 pounds or less. See General Regulations 5:2
Thus, they DO NOT need to protrude out past the lug nut. The way I read it, if your stud is 7/16" wide then it has to enter the hex portion of the lug nut 7/16". If your stud is 1/2" wide then it has to enter the hex portion of the lug nut 1/2".
Good luck
Tom <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Re: Wheel shanks and tech inspections? PS. Unless the rules have changed since 1999 this is the scoop. I don't have a current NHRA manual.
Also, I would use open end lugs so the tech can see your stud length. Open end lug nuts are REQUIRED at our local IHRA drag strip.
Tom <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Also, I would use open end lugs so the tech can see your stud length. Open end lug nuts are REQUIRED at our local IHRA drag strip.
Tom <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
