I bought one of Lionel’s tools and found it to be excellent.
Good price
Good quality
Good service
Happy customer
Kind regards
Nick
Wire Wheel Spanner
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- Location: Midlands UK
#21 Re: Wire Wheel Spanner
e type series 3 V12 2+2 1972, BMW iX 2023
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#22 Re: Wire Wheel Spanner
Wrong? I don't think so. Engineering fact? Maybe. Maybe not. Makes no sense to me.Series1 Stu wrote: ↑Fri Mar 22, 2019 1:22 pmThat's incorrect Jerry.
Loosening torque is always less than tightening torque due to overcoming friction as the nut etc starts to clamp the joint and then putting stretch into the threaded fastener. Engineering fact.
The reason for undoing often being more difficult than tightening is usually down to corrosion etc.
It is a fact, proven in countless school laboratories that static friction is greater than moving friction, for an object. Proven by using a weight to move an object resting on a flat plain (plane?). The weight being insufficient to get the object to move without it being given an external nudge, at which point the weight is sufficient to keep it moving.
Now, of course, if a thread has corroded in the meantime it is bound together, but many is the time I have had to use a large tommy bar to get alloy wheel bolts, done up to the correct torque, to break out - especially when incorrectly, they have been lubed!
I got Lionel's tool also - excellent.
Jerome Lunt
1970 S2 FHC - Dark Blue, Red Interior, MX5 Seats
2008 MX-5 NC PRHT
1970 S2 FHC - Dark Blue, Red Interior, MX5 Seats
2008 MX-5 NC PRHT
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#23 Re: Wire Wheel Spanner
Copy from Nord-Lock grp who should know about fixings .....Steve
WHEN TIGHTENING AND UNTIGHTENING?
Saturday, September 17, 2016
Q: Why is the untightening torque lower than the tightening torque when tightening a bolt or nut?
A: When tightening a bolt or nut, the applied torque must overcome the thread friction, the friction under the bolt head or nut and the inclined plane of the thread, to obtain a bolt preload (see Fig. 1A).
While untightening, provided that the assembly remains in the same condition, the applied torque only has to overcome frictional forces. As a result, untightening a fastener requires a lower torque (see Fig. 1B).
There are some exceptions to this rule. Since friction conditions vary, higher torque can be required to untighten a fastener. Corrosion, seizing, or surface roughness can considerably increase friction and subsequently the untightening torque.
WHEN TIGHTENING AND UNTIGHTENING?
Saturday, September 17, 2016
Q: Why is the untightening torque lower than the tightening torque when tightening a bolt or nut?
A: When tightening a bolt or nut, the applied torque must overcome the thread friction, the friction under the bolt head or nut and the inclined plane of the thread, to obtain a bolt preload (see Fig. 1A).
While untightening, provided that the assembly remains in the same condition, the applied torque only has to overcome frictional forces. As a result, untightening a fastener requires a lower torque (see Fig. 1B).
There are some exceptions to this rule. Since friction conditions vary, higher torque can be required to untighten a fastener. Corrosion, seizing, or surface roughness can considerably increase friction and subsequently the untightening torque.
Steve
69 S2 2+2 (just sold) ..Realm C type replica, 1960 xk150fhc
69 S2 2+2 (just sold) ..Realm C type replica, 1960 xk150fhc
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#24 Re: Wire Wheel Spanner
Thanks Steve. You saved me the trouble.
Schoolboy science is great for getting people interested in the subject but there's a whole lot more to engineering than sliding blocks down pieces of plywood.
Many years ago, as an apprentice, I spent 6 months developing a torque calibration procedure for pneumatic and electric screwdrivers in an electronics factory. It's amazing what you learn when you actually have a defined task. The knowledge stays with you too. As does the respect and admiration for the people who shared their skills and knowledge. Now it's my turn to help the current crop of young enthusiastic engineers to develop their skills and I feel privileged to do do.
Regards
Schoolboy science is great for getting people interested in the subject but there's a whole lot more to engineering than sliding blocks down pieces of plywood.
Many years ago, as an apprentice, I spent 6 months developing a torque calibration procedure for pneumatic and electric screwdrivers in an electronics factory. It's amazing what you learn when you actually have a defined task. The knowledge stays with you too. As does the respect and admiration for the people who shared their skills and knowledge. Now it's my turn to help the current crop of young enthusiastic engineers to develop their skills and I feel privileged to do do.
Regards
Stuart
If you can't make it work, make it complicated!
'62 FHC - Nearing completion
'69 Daimler 420 Sovereign
'78 Land Rover Series 3 109
If you can't make it work, make it complicated!
'62 FHC - Nearing completion
'69 Daimler 420 Sovereign
'78 Land Rover Series 3 109
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#25 Re: Wire Wheel Spanner
Thanks for starting this thread Simon - mine arrived from Lionel today and I am delighted with it.
Does anyone know what torque setting I should use to tighten my wheels using the spinner please?
regards
Ash
Does anyone know what torque setting I should use to tighten my wheels using the spinner please?
regards
Ash
Series 2 FHC 1970
1R 20607
1R 20607
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#26 Re: Wire Wheel Spanner
Hi Ash...this might help...Steve http://forum.etypeuk.com/viewtopic.php?f=3&t=12794
Steve
69 S2 2+2 (just sold) ..Realm C type replica, 1960 xk150fhc
69 S2 2+2 (just sold) ..Realm C type replica, 1960 xk150fhc
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#27 Re: Wire Wheel Spanner
Thanks Steve.
Goodness that was quite a read! A lot more than a torque setting value.
Cheers
Ash
Goodness that was quite a read! A lot more than a torque setting value.
Cheers
Ash
Series 2 FHC 1970
1R 20607
1R 20607
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