PULLEY MEASUREMENT
Another dumb question......Is the diameter of a pulley measured by the
overall outside diameter or the smaller inside diameter where the bottom of the belt rides? |
PULLEY MEASUREMENT
|
PULLEY MEASUREMENT
flyfisher wrote:
Another dumb question......Is the diameter of a pulley measured by the overall outside diameter or the smaller inside diameter where the bottom of the belt rides? Outside. Technically, it's the "pitch diameter" but everyone just measures the OD. You can easily see this at the hardware store, measure a 2-3-4" step pulley and you'll see the OD of the small end is 2", big end 4" .. GWE |
PULLEY MEASUREMENT
"Grant Erwin" wrote in message ... flyfisher wrote: Another dumb question......Is the diameter of a pulley measured by the overall outside diameter or the smaller inside diameter where the bottom of the belt rides? Outside. Technically, it's the "pitch diameter" but everyone just measures the OD. You can easily see this at the hardware store, measure a 2-3-4" step pulley and you'll see the OD of the small end is 2", big end 4" .. GWE Just a side comment... The bottom of the vee is meaningless... If the belt were to "bottom out," it would slip. Jerry |
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