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Old 10-27-2013, 10:28 AM
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DanEC DanEC is offline
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Location: Little Rock area, AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
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Quote:
Originally Posted by Grubby View Post
I wouldn't get the weight off the wheels to hit them. You are then pounding the bearings.

John
There are two schools of thought on this. Sitting on the ground the weight of the vehicle is bearing on the chamfer connection between the spinner/wheel which interfers with it loosening - but the energy of the hammer blow is being transferred to the spinner. In the air, the weight of the car is mostly off of the spinner/wheel interface - but a lot of your hammer energy is being absorbed by the suspension.

Personnally, I prefer to loosen/tighten with the wheel on the ground.

I guess you could compromise and jack the car up to slightly unload the wheel but with the wheel still in solid contact with the ground.
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