
10-27-2013, 10:28 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,533
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Quote:
Originally Posted by Grubby
I wouldn't get the weight off the wheels to hit them. You are then pounding the bearings.
John
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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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