Hi, many thanks for the excellent video, on the strength of which I bought the motor and controller as per your video. One question if I may, I have been given a Tenma DC bench power source. this gives 0-30V and 0-3 Amps is this powerful enough to drive the scooter motor. Please help as I have no one else to ask. many thanks Jim Lake
I'm glad you found my video useful James. I just searched for information on your particular power supply and downloaded its data sheet. Unfortunately the data sheet shows your power output is rated at only 90W (while the motor you intend to drive with it is rated as 150W). I thought I was cutting it fine by choosing a power supply with a rating of only 200 W but in practice it has never even felt warm so it appears to be ideal. (Some people recommend your power supply has double the rating of whatever you intend driving with it.) 90 W on the other hand I'd say is DEFINITELY too low. Sorry to disappoint you with this bad news.
Many thanks for your reply. It looks as though I will have to buy the power pack that you have used. By the way, I couldn't agree more with your policy of keeping the Unimat as original as possible. All the best and thankyou again Jim Lake
That's nice video and Nice quality work. I give you thumbs up 👍🏻. Lol Like I'm someone to say I give you. Lol My original db200 looks like it did from day one off factory. It sitting here on my welding bench that's sitting here in this cluttered building. Holy smokes had this unimat 5,6 years turned it on twice. It's nice did I say that all ready. Lol. No great video from ur ole hillbilly buddy stay safe
Gosh. With such little use your DB200 must be in good nick! I use my Unimat 3 roughly once a month but when I'm making a model steam engine it's many hours per day. 😊
G’day there, thanks so much for making this video. It’s exactly what I’ve been wanting to do with my Unimat 3 lathe. I have two original motors, but one went up in smoke recently and has made me very cautious about using the other one. I also saw your video on disassembly and cleaning of the original motor so I will probably do this before using it again. In the meantime I would love to convert it to 24V DC. I wonder if you would be so kind as to share the details of the 24V motor and speed controller you have used? That would be so helpful to me. Thanks again. James.
I'm glad you found my videos helpful James. (Most of the ones I found on TH-cam were from people trying to sell their own versions and gave away very little of the important detail.) I bought my motor direct from China via AliExpress. It was listed as "MY6812 150W 24V high speed small scooter brush motor" and my vendor was "XINHUANGDUO Automation Store". The speed controller I bought locally here in New Zealand but I've seen the same one for sale on Amazon. (I don't like dealing with Amazon.) My seller called it "60A peak Forward/Reverse DC speed controller Case Fan & display 10 - 55 V 1800W" (Heaven knows where that power rating came from because it seems greatly exaggerated to me and obviously his wording is designed for search engines rather than for a logical mind.) Hope this helps.. Best wishes - Tom
@@aerobill8554 I love my Unimat. I spent at least 4 hours over the last two days making parts for the clutch on my old 1951 Matchless motorcycle. There must be many others just like us around the world making the most of these well-designed machines. 😊
Good night Excellent explanation of the drive. I am planning to change the motor (in fact I have 2 motors in my Unimat 3) for a brushless one between 150 and 180 watt; I am very interested in your opinion. I would like to see your measuring tools, the ones I use are too large for the micro lathe. A hug from Medellín Colombia
Thanks Francisco. I was at first keen on going brushless myself but then the low cost, availability, and mounting bolt pattern of the MY6812 brushed motor made me decide otherwise. For measuring I either use a little 150mm/6inch rule or vernier calipers. I can't remember the last time I used something other than this. - Best wishes - Tom
Thanks Dennis. I did look at using a sewing machine motor myself but I couldn't find any at all available, let alone find one of the dimensions and power rating I wanted. The new technology used in my scooter motor involves very powerful permanent magnets so I'm hoping they don't attract swarf to it! But at least its well sealed if they do.
Hi, many thanks for the excellent video, on the strength of which I bought the motor and controller as per your video. One question if I may, I have been given a Tenma DC bench power source. this gives 0-30V and 0-3 Amps is this powerful enough to drive the scooter motor. Please help as I have no one else to ask. many thanks Jim Lake
I'm glad you found my video useful James. I just searched for information on your particular power supply and downloaded its data sheet. Unfortunately the data sheet shows your power output is rated at only 90W (while the motor you intend to drive with it is rated as 150W). I thought I was cutting it fine by choosing a power supply with a rating of only 200 W but in practice it has never even felt warm so it appears to be ideal. (Some people recommend your power supply has double the rating of whatever you intend driving with it.) 90 W on the other hand I'd say is DEFINITELY too low. Sorry to disappoint you with this bad news.
Many thanks for your reply. It looks as though I will have to buy the power pack that you have used. By the way, I couldn't agree more with your policy of keeping the Unimat as original as possible. All the best and thankyou again Jim Lake
That's nice video and Nice quality work. I give you thumbs up 👍🏻. Lol
Like I'm someone to say I give you. Lol
My original db200 looks like it did from day one off factory. It sitting here on my welding bench that's sitting here in this cluttered building. Holy smokes had this unimat 5,6 years turned it on twice. It's nice did I say that all ready. Lol. No great video from ur ole hillbilly buddy stay safe
Gosh. With such little use your DB200 must be in good nick! I use my Unimat 3 roughly once a month but when I'm making a model steam engine it's many hours per day. 😊
Excellent video. Good job!
G’day there, thanks so much for making this video. It’s exactly what I’ve been wanting to do with my Unimat 3 lathe. I have two original motors, but one went up in smoke recently and has made me very cautious about using the other one. I also saw your video on disassembly and cleaning of the original motor so I will probably do this before using it again. In the meantime I would love to convert it to 24V DC. I wonder if you would be so kind as to share the details of the 24V motor and speed controller you have used? That would be so helpful to me. Thanks again. James.
I'm glad you found my videos helpful James. (Most of the ones I found on TH-cam were from people trying to sell their own versions and gave away very little of the important detail.) I bought my motor direct from China via AliExpress. It was listed as "MY6812 150W 24V high speed small scooter brush motor" and my vendor was "XINHUANGDUO Automation Store". The speed controller I bought locally here in New Zealand but I've seen the same one for sale on Amazon. (I don't like dealing with Amazon.) My seller called it "60A peak Forward/Reverse DC speed controller Case Fan & display 10 - 55 V 1800W" (Heaven knows where that power rating came from because it seems greatly exaggerated to me and obviously his wording is designed for search engines rather than for a logical mind.) Hope this helps.. Best wishes - Tom
@@downunder4087thank you Tom. Still helping out. Greetings from a new 55-year old unimat 3 owner in the Netherlands.
@@aerobill8554 I love my Unimat. I spent at least 4 hours over the last two days making parts for the clutch on my old 1951 Matchless motorcycle. There must be many others just like us around the world making the most of these well-designed machines. 😊
Cool
Good night
Excellent explanation of the drive.
I am planning to change the motor (in fact I have 2 motors in my Unimat 3) for a brushless one between 150 and 180 watt; I am very interested in your opinion.
I would like to see your measuring tools, the ones I use are too large for the micro lathe.
A hug from Medellín Colombia
Thanks Francisco. I was at first keen on going brushless myself but then the low cost, availability, and mounting bolt pattern of the MY6812 brushed motor made me decide otherwise.
For measuring I either use a little 150mm/6inch rule or vernier calipers. I can't remember the last time I used something other than this.
- Best wishes - Tom
I went down the road with a 24 volt DC industrial sewing machine motor on my lathe . F/R. And variable speed
Thanks Dennis. I did look at using a sewing machine motor myself but I couldn't find any at all available, let alone find one of the dimensions and power rating I wanted. The new technology used in my scooter motor involves very powerful permanent magnets so I'm hoping they don't attract swarf to it! But at least its well sealed if they do.
Please make a video of the machine base , sises , tools etc
I'd like to help you. But unfortunately making these videos takes a lot of time and I'm too busy with other things right now.