Re: Variable speed motors
I have purchased from them in the past & have been happy with each purchase . Shipping seemed reasonable & fast . I have had the motor & controller mentioned earlier for several years just waiting for
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mike allen
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#118771
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Re: Variable speed motors
MPJA is sort of an interesting outfit worth keeping in mind.? They cover a LOT of ground including multiple pages of advertising in a Ham Radio magazine.? All the way to even selling a talking
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Charles Kinzer
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#118770
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Re: Variable speed motors
Someone mentioned the car seat motors , these folks have them on sale & also have a controller on sale too https://www.mpja.com/02-08-24.asp?r=417242&s=2 https://www.mpja.com/02-08-24.asp?r=417242&s=6
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mike allen
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#118769
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Re: Variable speed motors
I believe that with PWM nothing happens till 15% duty cycle & limits out at 85% duty cycle . That's in print somewhere out in internet land . animal
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mike allen
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#118768
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Re: Variable speed motors
Note that the potentiometer is operated at low volts BUT the electronics may now be isolated from line power, intended to be enclosed and therefore from us. Always take care in this regard, never
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David Wiseman
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#118767
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Re: Variable speed motors
Looks great You till you work in wood. Dave
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davesmith1800
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#118766
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Re: Cutting a 32mm thread on a mini lathe
Yes ads pay for site. Some where I had details on cutting a variable pitch thread. The used a South Bend Lathe 9A for camera lens. Hopping that makes to YouTube. You may fine up to 4 TPI [ 6mm]. Most
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davesmith1800
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#118765
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Re: Variable speed motors
Yes, far too many of them.? I think I was a little overly proud of the project.? :-) https://projects.foxharp.net/bandsaw/ paul
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Paul Fox
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#118764
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Re: Cutting a 32mm thread on a mini lathe
Hi Lone tree. I cut my thread with a normal bit. The item was an adaptor to join additional lenses to a Canon G2 digital camera. It was an internal thread, 40mm dia, 0.75mm pitch, both ends ! Worked
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Ellis Cory
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#118763
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Re: Cutting a 32mm thread on a mini lathe
Don' think that will be cut with a normal threading bit.? ?(Yes, I endured the insufferable youtube ad to see this)? ?8^) -- Lone Tree, Colorado? ?USA
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Craig Hopewell
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#118762
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Re: Variable speed motors
I haven't tried using a treadmill motor controller and cannot be specific but hope this is of some help. Lets start with some calculations from your motor DC specs: Power = 120 volt x 21 A = 2,520
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Evan
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#118761
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Re: Variable speed motors
I was thinking something like that, or a powered tailstock. The treadmill include motors look exactly the same as those seat ones, just a bit beefier. Tony Sent: Thursday, 8 February 2024 9:51 AM To:
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Tony Smith
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#118760
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Re: Variable speed motors
I used a stepper motor to drive the X axis on my mini mill. It actually works great *Have A Great Day * *Tracy Ranson*
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T
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#118759
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Re: Variable speed motors
The Jan/Feb 2024 Home Shop Machinist has a cover article about making a power X axis drive for a mini-mill table that uses a 12V car seat motor (American Science and Surplus has been selling them
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Bruce J
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#118758
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Re: Variable speed motors
Most of the ones you¡¯ll find will have a 100v-ish DC brushed motor rated for about 0.5 ¨C 1HP, which is as good as or better than what our 7x12 lathe have, especially the older ones. Very similar
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Tony Smith
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#118757
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Re: Variable speed motors
Any photos you post of ban saw? Dave
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davesmith1800
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#118756
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Re: Variable speed motors
Mike -- good guess -- my bandsaw is using an MC-60 controller.? The pot was connected directly. Thanks for the info on the MC-2100, and on the youtube stuff.? I'll take a look. Tracy -- do you
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Paul Fox
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#118755
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Re: Variable speed motors
I see why Treadmill motors are popular. On trash day you go down the street and pickup for free Treadmills. All you need to do is remove a new motor. Dave
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davesmith1800
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#118754
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Re: Variable speed motors
Paul I have a couple treadmill driver boards that I used to drive a treadmill motor on my mini lathe if you¡¯re interested *Have A Great Day * *Tracy Ranson*
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T
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#118753
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Re: Variable speed motors
Paul I forgot to mention if ya do facebook there's a group all about treadmill motors on Shopsmith's , Some guys that have done a lot of homework & shared it .
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mike allen
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#118752
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