New winder build gear question for those who built one with a sewing machine

[Slobrain]

I have to ask, I know the larger spindle will give a slower speed but wondering if I should use the smaller one instead to run the winder faster?

Any opinions welcome.

[David King]

Slowbrain this should really be up in the winding equipment section but no worries. I've not seen this type of motor in a sewing machine before. I'd see what it's rpms are under no load and make a determination that way. The old universal style motors run very fast, about 7000 rpm full bore so you can, and need to, reduce the speed a lot via the belts.

[Slobrain]

Slowbrain this should really be up in the winding equipment section but no worries. I've not seen this type of motor in a sewing machine before. I'd see what it's rpms are under no load and make a determination that way. The old universal style motors run very fast, about 7000 rpm full bore so you can, and need to, reduce the speed a lot via the belts.

oops, yes I posted it in the wrong section...it was late
bad eyesight and slow brain...lol...
I'll probably go with the large spindle as I believe the motor is 7000 rpm like most sewing machines even though there is no info on the motor. I think I can move the large spindle to use closer to the middle of the shaft to keep the spindle and motor inside the cabinet I'll build. I'll then use the small spindle to mount a 6 inch disk on and make that the plate the bobbin will ride on.

Cheers

[Jason Rodgers]

oops, yes I posted it in the wrong section...it was late
bad eyesight and slow brain...lol...
I'll probably go with the large spindle as I believe the motor is 7000 rpm like most sewing machines even though there is no info on the motor. I think I can move the large spindle to use closer to the middle of the shaft to keep the spindle and motor inside the cabinet I'll build. I'll then use the small spindle to mount a 6 inch disk on and make that the plate the bobbin will ride on.

Cheers

This is what I would do with the parts you have there, which is basically what I did with the parts I had here. Be VERY careful drilling and tapping the smaller gear for the faceplate. Use the largest diameter hole/tap/screws that make sense for the amount of material between the gear's teeth and center hole.

[rdrr]

oops, yes I posted it in the wrong section...it was late
bad eyesight and slow brain...lol...
I'll probably go with the large spindle as I believe the motor is 7000 rpm like most sewing machines even though there is no info on the motor. I think I can move the large spindle to use closer to the middle of the shaft to keep the spindle and motor inside the cabinet I'll build. I'll then use the small spindle to mount a 6 inch disk on and make that the plate the bobbin will ride on.

Cheers

Using the large gear to drive the smaller one will result in an increase in rpm, not a decrease. With those types of motors that spin in the 7000 rpm range you want to reduce the speed. That would be done by using a smaller gear/pulley on the motor and a larger one on the spindle that the bobbin plate will be on. Looking at the 2 gears that you have they appear to be about a 4 or 5 to 1 ratio. The smaller one in this case at 7000 rpm would drive the larger one somewhere in the 1500 rpm range . The larger gear driving the smaller gear would give you somewhere around 30,000 rpm.