SJR
Member Since: 09 Aug 2006
Location: East Manchester
Posts: 4030
  
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Zebadee
There was a discussion on bottle jacks in this thread 
http://www.disco3.co.uk/forum/topic36442.html I believe that every human has a finite number of heart-beats. I don't intend to waste any of mine running around doing exercises.
Buzz Aldrin (1930 -
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 29th Jun 2009 9:49 am |
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zebadee
Member Since: 15 Feb 2006
Location: The Magic Roundabout
Posts: 1392
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Cheers
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| 29th Jun 2009 9:53 am |
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frenchy
Member Since: 05 Dec 2007
Location: Liverpool
Posts: 1037
  
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Andrew Hebron wrote:bigdave g4 wrote:All tyre dealers are airgun happy.  gives a bad name to the few good ones.
Last time I used a tyre dealer, I told him the lb/ft torque required. He got the hint and went to find the torque wrench. Took him a while, and he had to dust it off.... 
I don't think I've ever see a torque wrench used in a tyre fitters  - can the guns be set to a specific torque. 
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| 2nd Jul 2009 11:59 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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Yes, air guns can be set to a variety of torques. In my experience these include:
Too Loose
Too Tight
Has Someone Welded This?
Although they may mention in the manual the approx settings for the torque switch positions they're never calibrated. On an old Volvo of mine, I had to replace all 4 discs due to warping caused by over tight wheel bolts being just air gunned on. Since then I've always insisted that they "back-torque"* the bolts after fitting; don't let them just show you the wrench clicking - if a bolts already torqued to 200Nm then the wrench is still going to click at 140...if the bolt doesn't rotate prior to the click then it's not being torqued properly yet I've seen loads of lazy sods do this.
BTW, after I've made them do this out of principal, I know full well that their wrench has probably never been serviced/calibrated so I get home, park up until it's cold then back-torque all the nuts myself with my own wrench which I store set to 0 Nm to keep it at best calibration. I then just re-torque (not back torque this time) two and five days later and it's surprising that this can still find a bolt or two that's no longer tight enough.
Of course if there's a tyre expert who can suggest a better way then I'm all ears, but the above has saved me from any further expense in warped disks 
* my invented term i.e. use the torque wrench to undo and redo each bolt Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 3rd Jul 2009 5:39 am |
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Ken
Member Since: 20 Feb 2006
Location: Here
Posts: 10865
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Nothing wrong with using an air gun at all
Stick to the rules and all will be well
The peps who have been present when I've done their tyres have seen how it should be done
We always have to hand for 4x4's
20T AiR Jack
6T Ballon Jack
Breaker bar with correct hex impact socket on
Air Gun with correct hex impact socket on
Torque Wrench correct hex impact socket on
ie three sockets in the correct size the average monkey is a lazy sort and wont / cant be arsed to swap sockets hence air gun happy
We also have a 3ft BB with 3/4 end but if we use this the cars on the ramp with new bolts /nuts / stud's etc
Choose you tyre fitter carefully
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| 3rd Jul 2009 7:23 am |
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