docharber
has rocks in the head
Member since October 2008
Posts: 693
|
Post by docharber on Nov 2, 2008 16:15:16 GMT -5
I am consiidering building a 12-15lb tumbler and was wondering if anyone had ever used sewing machine motors? I recall my mother's old singer had a very smooth and quiet motor that might work well. I have looked for a similar motor but the new replacement motor the local sexwing machine repair shop had was a noisy universal motor that I don't think would be suitable for 24-7 operation. I don't really understnd the engineering considerations involved. I plan to use ball bearings and stainless steel drive shafts to provide a very low friction chassis, but I am concerned about overheating in such an application. I can certainly figutr ouy how to reduce the speed appropriately, I think. I read the thread about the bathroom fan motor, too and i think that would be a good solution too. The noice thing about using a sewing machine motor is that belts, puylleys and other parts for tghe drive system might be ready made and cheap. Anyone else have any ideas? Mark H.
|
|
UtahRockHound
spending too much on rocks
Sometimes your the Windshield, sometimes your the Rock.
Member since May 2008
Posts: 301
|
Post by UtahRockHound on Nov 3, 2008 12:10:30 GMT -5
I would think the motor would be under rated and overheat. A tumbler would run 24/7 continues. A sewing machine is not made for continues work. Check out www.surpluscenter.com/ they have some really great deals on motors of all kinds. I would be surprised if you had to spend over $30 to get a motor.
|
|
docharber
has rocks in the head
Member since October 2008
Posts: 693
|
Post by docharber on Nov 3, 2008 20:33:12 GMT -5
The continuous duty thing is just what I was wondering about. A motor from a commercial machine might be rated for continuous duty but it would be really hard to determine. I checked out the link and they do have some great deals- just not the particular motor I need now. I'll keep looking, though. Thanks for the tip on the site.
Mark H.
|
|