I was also thinking of actually making a foot-pedal on mine to have both hands free while starting-stopping the lathe. Maybe both hand/foot switchable. With some work it is just easier to have the hands free to setup and hold and start the motor directly.
My thoughts exactly, but a foot pedal is a hazard. If your foot accidentally touches it things start fling. My foot pedal is far from my leg-space (I actually have to take my leg out from under the table - and still I had mishaps. Maybe a combination of both will be good :)
Hmmm. I use an industrial sewing machine and some of these brushless motors have zero torque. There are some new versions now that make substantially more power for punching through leather etc.
@@GTIFabric good point, but lathes rely on speed more than torque. Especially on small lathes - yes, torque would be nice for heavy cutting but the lathe m6 leadscrew would shear off... So I opt for higher speed and 0.1-0.05mm depth of cut.
I've been thinking the same thing since I saw the Tested video with Adam Savage. I have a Unimat 3 and a Sherline with the original underpowered motors. How is the torque at low speed? Do you have measurements for the motor and mounting?
Good question! My current el-cheapo motor absolutely lacks power. Lately I've been turning some bronze and boy does it need more mojo! This one is supposed to be much better: Voltage: 220V Frequency: 50Hz Power: 550W Speed control: 500-4500R/MIN Angular moment: 6N.M These motors are available on aliexpress. I'll add a #notsponsored and no affiliations link below. You can look up whatever alternative is best for you (I've seen 1000W motors). This one looks identical to what I have: www.aliexpress.com/item/1005006297932632.html?spm=a2g0o.productlist.main.29.2263VjHjVjHjC5&algo_pvid=f4b13b5d-f3cd-4aa1-a039-1cde3fca76c6&algo_exp_id=f4b13b5d-f3cd-4aa1-a039-1cde3fca76c6-14&pdp_npi=4%40dis%21USD%2164.38%2147.64%21%21%2164.38%2147.64%21%40211b600517112348101675966e5c65%2112000036661814066%21sea%21IL%21101473714%21&curPageLogUid=s1eG5ouaQtva&utparam-url=scene%3Asearch%7Cquery_from%3A
@@keithviolette5870 an old transformer 24V 10Amp with a bridge rectifier and an elco 10.000 uF, but you can use a cheap modern switched one, I also can run it on 2 car batteries
Sounds right... I'll see what is the original unimat lathe motor weight and compare :) I'm thinking of designing and printing a machinist jack to support the weight while the lathe is in "lathe mode"@@happymark1805
Super! How does it work if you position the rotary wheel directly concentrically on the axis of rotation? Is it then not possible to regulate finely enough? Did you check here: th-cam.com/video/qao7Rex1lZU/w-d-xo.htmlsi=SFODKuFiVdUz-K3O ? I ask myself: Is there really no non-contacting rotary, cylindrical hall effekt sensor with the same eletrical values as the original linear hall effect sensor 49E?
@@marcoam2610 hi. Well, very good question. I found no problems running it concentrically. You do need to slow down speed before you stop the motor or it stops instantly with a sharp impact. Other than thus it's not a problem
I was also thinking of actually making a foot-pedal on mine to have both hands free while starting-stopping the lathe. Maybe both hand/foot switchable. With some work it is just easier to have the hands free to setup and hold and start the motor directly.
My thoughts exactly, but a foot pedal is a hazard. If your foot accidentally touches it things start fling. My foot pedal is far from my leg-space (I actually have to take my leg out from under the table - and still I had mishaps. Maybe a combination of both will be good :)
Hmmm. I use an industrial sewing machine and some of these brushless motors have zero torque. There are some new versions now that make substantially more power for punching through leather etc.
@@GTIFabric good point, but lathes rely on speed more than torque. Especially on small lathes - yes, torque would be nice for heavy cutting but the lathe m6 leadscrew would shear off... So I opt for higher speed and 0.1-0.05mm depth of cut.
Thoughts on using a treadmill motor?
For a large lathe - sure... why not?
A friend of mine built a belt sander with a threadmil motor. Works just great.
I'm using a scooter motor for my Unimat and it's perfect.
@@DavidPlass cool. Wish you could send a picture...!
@@SmallatheI think it's the same as this one: th-cam.com/video/oKcHh9SaT3Y/w-d-xo.html
@@DavidPlass Thanks!!! I saw these on ebay/aliexpress and wondered how good they are. Good to know :)
I've been thinking the same thing since I saw the Tested video with Adam Savage. I have a Unimat 3 and a Sherline with the original underpowered motors.
How is the torque at low speed?
Do you have measurements for the motor and mounting?
Good question!
My current el-cheapo motor absolutely lacks power. Lately I've been turning some bronze and boy does it need more mojo!
This one is supposed to be much better:
Voltage: 220V
Frequency: 50Hz
Power: 550W
Speed control: 500-4500R/MIN
Angular moment: 6N.M
These motors are available on aliexpress. I'll add a #notsponsored and no affiliations link below. You can look up whatever alternative is best for you (I've seen 1000W motors).
This one looks identical to what I have:
www.aliexpress.com/item/1005006297932632.html?spm=a2g0o.productlist.main.29.2263VjHjVjHjC5&algo_pvid=f4b13b5d-f3cd-4aa1-a039-1cde3fca76c6&algo_exp_id=f4b13b5d-f3cd-4aa1-a039-1cde3fca76c6-14&pdp_npi=4%40dis%21USD%2164.38%2147.64%21%21%2164.38%2147.64%21%40211b600517112348101675966e5c65%2112000036661814066%21sea%21IL%21101473714%21&curPageLogUid=s1eG5ouaQtva&utparam-url=scene%3Asearch%7Cquery_from%3A
I use an old 24V dc motor out of an electric wheelchair, works perfect
Interesting, what do you use for a power supply?
@@keithviolette5870 an old transformer 24V 10Amp with a bridge rectifier and an elco 10.000 uF, but you can use a cheap modern switched one, I also can run it on 2 car batteries
Nice. How heavy is it?
@@Smallathe never measured the weight, but they are quite small, a bit shorter than a can of spraypaint and they are made for heavy use
Sounds right... I'll see what is the original unimat lathe motor weight and compare :)
I'm thinking of designing and printing a machinist jack to support the weight while the lathe is in "lathe mode"@@happymark1805
Hello and welcome to small printer 😛
Lol... :)
It's a descent one ... Prusha mk3+
Super! How does it work if you position the rotary wheel directly concentrically on the axis of rotation? Is it then not possible to regulate finely enough?
Did you check here:
th-cam.com/video/qao7Rex1lZU/w-d-xo.htmlsi=SFODKuFiVdUz-K3O
?
I ask myself: Is there really no non-contacting rotary, cylindrical hall effekt sensor with the same eletrical values as the original linear hall effect sensor 49E?
@@marcoam2610 hi. Well, very good question. I found no problems running it concentrically. You do need to slow down speed before you stop the motor or it stops instantly with a sharp impact. Other than thus it's not a problem
@@Smallathe The controller shown in this video has a programable brake setting, you can turn it of, or adjust in 5 steps.
hello. Is it not possible to connect a potasyonmetre?tr.wikipedia.org/wiki/Potansiyometre