[TheForge] A Balancing act

[Peter Fels & Phoebe Palmer]

One last (?) thought. A slight looseness between the pulley and the shaft, or the locking key/allen head a bit loose could do that. Sometimes it only shows on one side of the pulley.
I assume you turned it slowly under load and watched closely that the belt level doesn’t rise and fall in the grooves.

On Mar 5, 2015, at 7:34 PM, Steve Bloom <sabloom at ironflower.com> wrote:

On 3/5/2015 6:24 PM, Peter Fels & Phoebe Palmer wrote:
> Good Mike:
> Might as well toss in that, aluminum pulleys can wear irregularly with use, harder material to a lesser degree.
> Also, rubber V belts sometimes wear unevenly , especially around the lap joint.
> Last, if someone balanced the wheel with brazing rod and nothing warped…Then the amount of air resistance on individual vanes could also be irregular.
>   

w/o the fan -- it's quiet. New belt, used often, tension readjusted......thanks for the ideas but...well....doesn't seem to be the cause.

Steve
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