regarding the "slow down your machine the inexpensive way that no one is talking about" video

[DonInReno]

That guy is just trying to get more views claiming he’s discovered something unique....nothing he claims is revolutionary, difficult or a conspiracy.  Of course sewing machine dealers won’t encourage modifying a machine - somebody’s grand kid puts his fingers in the new pulley and guess who gets sued.  There is no upside for a dealer to sell anything except what normally comes with a machine.

I’m in favor of improving the performance of a machine if it’s done in a way that demonstrates good judgement and craftsmanship.  If someone cobbles together an abortion I have no desire to be the good judgement police - to each his own.

edit:  A larger handwheel won’t affect timing, but it does make it more likely that a needle crash or jam will screw up the timing since there’s more torque being applied.

Edited November 12, 2018 by DonInReno

[dikman]

9 hours ago, DonInReno said:

edit:  A larger handwheel won’t affect timing, but it does make it more likely that a needle crash or jam will screw up the timing since there’s more torque being applied.

True, but the same thing can happen with a reducer, it's simply a different way to achieve the same result, i.e. slow down the machine.