Torquing Wheel nuts...
#1
Torquing Wheel nuts...
I have a set of 949 Racing wheel nuts and finally bought a torque wrench.
A couple of questions,
- What torque setting is recommended with these aluminium nuts...
- How many of you track guys do actually torque to a pre determined value as opposed to just cranking on it and deciding physically how tight is tight enough...?
Have my first evening (dark) track day in 4 days time so trying to get things sorted ahead of time. Having read about Emilio losing a wheel in one of his posts I figure wheel nut torque should be one of them...
A couple of questions,
- What torque setting is recommended with these aluminium nuts...
- How many of you track guys do actually torque to a pre determined value as opposed to just cranking on it and deciding physically how tight is tight enough...?
Have my first evening (dark) track day in 4 days time so trying to get things sorted ahead of time. Having read about Emilio losing a wheel in one of his posts I figure wheel nut torque should be one of them...
#2
From the website http://949racing.com/6ulfaqsandfitmentinfo.aspx
"70~80 ft-lbs ( 94Nm~108Nm)"
You really need to use a torque wrench to get the feel for how "not tight" this torque setting is (ie. I'm betting that you're over-tightening them massively if you're "guess-timating" - I certainly was).
"70~80 ft-lbs ( 94Nm~108Nm)"
You really need to use a torque wrench to get the feel for how "not tight" this torque setting is (ie. I'm betting that you're over-tightening them massively if you're "guess-timating" - I certainly was).
#5
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I have always torqued my wheels. My rechargeable impact wrench gets them to about 40-50 ft/lbs, I snug them in a star pattern. Then lower the car to the ground and tighten them in a star pattern to 80 ft/lbs with the wrench.
#7
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P.S. You used the term "shear" COMPLETELY incorrectly.
#9
I torque them down with my weight :P
1 foot long wrench sitting at about 30 degrees incline.
I weight about 170 So my max force i can put down is 170 assuming the wrench is at 90 degrees and i'm standing on the tip of it. More commonly i put down about 150lb-ft. I hold my self up while i'm standing on the wrench so i'm putting about 100-120ft-lb.
1 foot long wrench sitting at about 30 degrees incline.
I weight about 170 So my max force i can put down is 170 assuming the wrench is at 90 degrees and i'm standing on the tip of it. More commonly i put down about 150lb-ft. I hold my self up while i'm standing on the wrench so i'm putting about 100-120ft-lb.
#14
Sorry curly, shear WAS the wrong term. Perhaps I should have used stretched beyond material tolerance...
Maybe "snapped" which is what I thought I typed or at least intended.
I think I will use 70 ft/lbs and use anti sieze on the thread.
Further to the aluminium nuts, do these have a recommended life span, for example a season or are they good for ages like a steel nut?
Maybe "snapped" which is what I thought I typed or at least intended.
I think I will use 70 ft/lbs and use anti sieze on the thread.
Further to the aluminium nuts, do these have a recommended life span, for example a season or are they good for ages like a steel nut?
#15
Cpt. Slow
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Actually, I have no idea what the proper technical term is for tightening a fastener so tight it snaps off. Snapped is certainly not it. I thought torqued would work, but in the context of the thread's subject, that could be confusing.
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