LumberJocks

Lathe Motor Conversion to Variable Speed DC.

  • Advertise with us
Project by thewoodworker01 posted 688 days ago 3354 views 1 time favorited 7 comments Add to Favorites Watch

I recemtly turned a bunch of bowls on my lathe and I was having a lot of vibration problems. My lathe has only 5 speeds. To change speeds, I have to turn the lathe off, set my tool down, wait for it to stop spinning, open up the door, change belt, close door… (In other words it takes a while.) Then you would have to settle for that speed, and if your bowl was a little out of round, your lathe is bouncing. So I went looking around and went on to ebay and found my self a Leeson DC Motor. It is a 3/4 HP, has 27 pounds of torque. It runs at 90 VDC on normal household electric. I also bought a DC Motor Control made by KB Electronics. It has a 1 HP 110 Volt Resistor in it. It also has a Forward/Reversing switch in it as well. That really helps out when sanding.

After I did the motor conversion, I turned 7 bowls. Man is that nice!! All you do to change speeds is turn a dial. No longer changing a belt. But luckily I was able to keep my old pulleys and belt, so I didn’t have to new pulleys.

I also have a video of it on YouTube

http://www.youtube.com/watch?v=ZFVuJ0hwNnw&feature=plcp

-- Most people say "Measure Twice, Cut Once." I say, "Cut Twice, Measure Once".





7 comments so far

View KevinWelp's profile

KevinWelp

17 posts in 899 days


#1 posted 688 days ago

Nice job! I have a Rigid almost identical to yours that i thought about doing that to. Glad to see it can be done. Were the motor and controller very expensive?
Thanks Kevin

-- Kevin - Rochester, MN

View Jim Jakosh's profile

Jim Jakosh

11063 posts in 1703 days


#2 posted 688 days ago

That sounds like a very favorable trade. I would never buy a lathe where you have to change a belt to change the speed just for the very reasons you stated!!

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View Sbilly's profile

Sbilly

19 posts in 938 days


#3 posted 688 days ago

You can do a VFD and not change the motor. It it’s you do the same as a dc motor and controller

View David Kirtley's profile

David Kirtley

1276 posts in 1596 days


#4 posted 688 days ago

I would never want to go back to a belt change speed lathe. You get spoiled really quickly.

-- Woodworking shouldn't cost a fortune: http://lowbudgetwoodworker.blogspot.com/

View grfrazee's profile

grfrazee

322 posts in 737 days


#5 posted 687 days ago

This is on the list of things to do – I have a Jet 5-speed lathe, and I hate having to change the speed with belts.

One thing though, I don’t like how yours has you reaching to the back of the lathe to adjust the speed. It gives me the willies reaching over/around a spinning piece.

-- -=Pride is not a sin=-

View doncutlip's profile

doncutlip

2832 posts in 2154 days


#6 posted 687 days ago

Good job, should hold up well

-- Don, Royersford, PA

View CyberDyneSystems's profile

CyberDyneSystems

106 posts in 786 days


#7 posted 687 days ago

Some day I’d like to spoil myself with a conversion like this. Very nice!

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase