One for Pops...

AngrySailor

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Oct 15, 2014
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---not quite right
#23
It looks to me that they were trying to achieve an oil film between the ball and cup on the end of the spindle. The ball sits on the aluminum bottom of the well as single point contact which I think would have higher friction than the two hard surfaces with oil film between. Likely dimples into the soft aluminum.
 

Gepetto

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Old 'Arn Enthusiast
#24
It looks to me that they were trying to achieve an oil film between the ball and cup on the end of the spindle. The ball sits on the aluminum bottom of the well as single point contact which I think would have higher friction than the two hard surfaces with oil film between. Likely dimples into the soft aluminum.
That is odd. Unless the ball is secured somehow, I would think it would rather rotate on the point contact than the cupped interface.
 

AngrySailor

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---not quite right
#25
That is odd. Unless the ball is secured somehow, I would think it would rather rotate on the point contact than the cupped interface.
The ball was not secured. I will have the spindle out again next time I’m home for a looksie and see how things are doing. I wonder if the single point contact into a comparatively soft metal or if there is a sharp edge machined into the bottom of the well causes it to have higher friction keeping the ball stationary. The spindle and well were clean, no signs of wear.
 
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