William,
Mechanical designer here. I specify screw torques.
Torque is a convenient but not very accurate way to control screw tension.
Most of your torque is friction, rather than screw tension.
You can try whacking the end of your wrench with a hammer. Maybe this is a
good time to see a mechanic. This is what they do for a living.
On Fri, 3 Nov 2023 03:07:29 -0400
William Park via talk <[email protected]> wrote:
> Hi (another very off topic),
>
> Wheel bolts on my VW are seized pretty hard. Standing on 24in breaker
> bar doesn't help, and that's 300ft-lb torque. So, I'm thinking about
> getting an impact wrench. Those with greater than 300ft-lb are very
> expensive. I found one with 250ft-lb spec at my price range.
>
> Question is, is there difference between static torque vs impact torque?
> In other words, will 250ft-lb impact wrench loosen 300ft-lb bolt?
>
> Browsing YouTube, I learned that torque specs are always misleading and
> inflated. This means, I have to find 600ft-lb or greater, and that's
> serious money.
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Howard Gibson
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http://home.eol.ca/~hgibson
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