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Old 01-05-2021, 01:17 AM
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Gymnast2
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Join Date: Feb 2020
Location: Copenhagen
Posts: 52
Default Black V-belts are best

Many vintage sewing machines got a belt between the motor and the flywheel of the machine. You will find these belts and some pulleys as replacement parts from many stores. The belts will typically be black V-belts, colored lug belts or round O-rings. This video show the result of a comparative tests with these kinds of belts. The black V-belts got the lowest friction loss in the comparison.

https://youtu.be/pGHbPfaSXl8

Did you know of similar test results elsewhere?
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