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How to slow down a can opener for a drying wheel?
9 replies to this topic
Posted 11 November 2004 - 05:14 PM
I have an old can opener that I started to fiddle with trying to make it into a drying wheel . I tried to put a dimmer switch on it but no matter how low I turned it I still got 46 rpms . I could hear a difference in the sound it made with the dimmer on low but no change in rpms. Can this be don or am I wasting time .
Posted 11 November 2004 - 05:26 PM
that would sling the epoxy all over the wall hehehe. I'm not sure how you could fix it, i was lucky and had an old rotiserie to tear up for my motor.
Posted 11 November 2004 - 05:44 PM
If you can put a pulley on the can opener drive, you can
use it to run your dryer. I don't know if the gears will
hold up to run it as long as you need to.
A 1/2" dia pulley on the can opener, and a 3 1/2" pulley
on your dryer will give the dryer a speed of 6 1/2 rpm.
Use this formuls to calculate speeds of other pulley combinations.
Speed of drive pulley X Diameter of drive pulley
Diameter of driven pulley
Posted 17 December 2005 - 12:18 AM
I found a paint stirring motor at a junk shop , they had several , aprox 40 rpm, but was 4 bucks, and figured they were made to take abuse, gonna try the bigger pulley to reduce rpm.
Posted 17 December 2005 - 10:13 AM
As for the dimmer switch, it wont work. AC motors don't like low voltage. Cutting the voltage with a dimmer will just make the motor get hotter and hotter until it burns up. Oh, and the speed wont change.
Posted 19 December 2005 - 01:57 AM
I went to my local thrift store and bought a microwave that had a turn table. It was ten bucks. Its only a four rpm motor but it works well for me. I just took the motor out spliced a plug end to the motor contacts and I got a ten dollar drying wheel.
Posted 20 December 2005 - 11:57 AM
I also used a paint machine motor. I used a vacuum cleaner belt on the motor and an empty fishing line spool as a pulley on the other end attached to my dryer. It geared me down perfect. The lip on the line spool keeps the belt in place. I have many hours on my drier and have not had any problems.