What makes a machine sew fast?
01-06-2021, 01:41 PM
#22
Member
Join Date: Feb 2020
Location: Copenhagen
Posts: 61
This is a video about how to measure the speed with a Smartphone. I have tested it, at it gives results exactly as other instruments I got. Then you can compare to speed with others in forums:
https://youtu.be/qbxA0XPbl6w
I have tried to measure on my Singer 201k. With a loose black V-belt, it runs 920 SPM max speed. When the V-belt tension is set, so the pulley just slips very slow, then the speed drops to 820 SPM. So the belt makes a significant power loss. The channel got some info on belts too.
https://youtu.be/qbxA0XPbl6w
I have tried to measure on my Singer 201k. With a loose black V-belt, it runs 920 SPM max speed. When the V-belt tension is set, so the pulley just slips very slow, then the speed drops to 820 SPM. So the belt makes a significant power loss. The channel got some info on belts too.
