JekRankin
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| posted on 8/2/10 at 08:15 PM |
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Wheel stud thread engagement
Hi all,
Just been measuring up my hubs, wheels and wheel nuts to figure out what size of wheel studs I need.
At the front, I measured a required stud length of 45mm, which works out nicely, since 47mm long studs are readily available.
At the rear however, I need a stud 50mm in length. The next size up I can find is 63mm long however, so should I fit 47mm studs here at the expense of
3mm of thread engagement, or should I get the 63mm studs instead?
(I've got open wheel nuts so the exposed thread on the longer studs shouldn't be an issue unless it upsets Mr Iva?)
Many thanks,
Jek
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afj
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| posted on 8/2/10 at 08:16 PM |
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buy long one and trim
eerrrrrrrrrrrrrrrr
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designer
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| posted on 8/2/10 at 08:25 PM |
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The studs MUST protrude from the nut.
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JekRankin
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| posted on 8/2/10 at 08:40 PM |
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Originally, I was thinking that the studs would need to protrude through the nut, but then I remembered closed wheel nuts.
Obviously with these, the thread can't protrude through, so if I used closed nuts, I would need to use the shorter studs?
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atm92484
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| posted on 8/2/10 at 09:17 PM |
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For the weight of the Locost, you could probably get away with the 47mm but I'd still go with the long ones to be safe.
If you are one that torques wheels, it might damage the threads not having full engagement.
Plus if you ever buy new wheels and you need more stud, you'll have to change them out.
-Andrew
Build Log
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matty h
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| posted on 8/2/10 at 09:20 PM |
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I seem to remember something about having 17 turns on wheel nuts.
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JekRankin
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| posted on 8/2/10 at 09:30 PM |
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Ok thanks guys, makes sense to get the longer studs. There don't seem to be many different lengths available so I imagine it's sometimes
tricky to get the right lengths for closed nuts unless you chop them down to size.
Cheers,
Jek
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Howlor
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| posted on 8/2/10 at 10:12 PM |
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IIRC the nut should have 1.5 turns sticking out.
Steve
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flak monkey
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| posted on 9/2/10 at 07:10 AM |
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Mine dont stick out on the front and nothing was said at the SVA.
The legal minimum required thread engagment is 6 turns for wheel nuts. So 9mm in most cases, and this is measured from the bottom of the tapered
seat.
http://www.needforspeed.co.uk/htmlpages/TechWheels.htm
I know in engineering terms the max strength is at 1.5 times the stud diameter however.
Sera
http://www.motosera.com
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NS Dev
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| posted on 9/2/10 at 01:37 PM |
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ditto Flakmonkey
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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