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 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 :)
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
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: ruclips.net/video/qao7Rex1lZU/видео.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
@@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
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 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 :)
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: ruclips.net/video/oKcHh9SaT3Y/видео.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
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:
ruclips.net/video/qao7Rex1lZU/видео.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.
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+