spacegold
has rocks in the head
Member since September 2006
Posts: 732
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Post by spacegold on Oct 6, 2006 15:27:07 GMT -5
.... without changing pulleys. If you think you need to speed up your tumbler barrel, one thing that works is increasing the diameter of your drive roller. I did this with short pieces of rubber tubing that had an ID the same as the diameter of the drive roller and a thickness of about 1\8". Radiator hose it was. Rubber garden hose will also work and comes in 1/2 or 5/8 ID.
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Post by Jack ( Yorkshire) on Oct 8, 2006 4:09:25 GMT -5
Hi Space gold ,
Dont speed up to fast it causes fractures
keep within 35 to 70 RPM 3 1/2 lb model
jack
Yorkshire UK
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spacegold
has rocks in the head
Member since September 2006
Posts: 732
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Post by spacegold on Oct 12, 2006 0:50:14 GMT -5
I don't tumble easily fractured stone in the coarse drum, and I always use pellets at all stages in the rare cases when I do tumble delicate stones. But your warning is good for those who do work with easily fractured stone.
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Post by sandsman1 on Oct 16, 2006 15:11:06 GMT -5
i have done the same thing on a model b that i used only for rough grind with heater hose for a car and it worked get for a rough grind barrel it did actually speed up the first grind and don't forget the extra speed wears out the grit faster so instead of 7 days i would recharge it in 5 days
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Post by LCARS on Oct 18, 2006 23:19:43 GMT -5
Also, don't forget thet increasing the drive roller diameter to increase the barrel speed will decrease the power ratio, resulting in increased motor loading. Too much of that can spell the end of the motor.
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spacegold
has rocks in the head
Member since September 2006
Posts: 732
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Post by spacegold on Oct 22, 2006 1:24:15 GMT -5
Good point, but anything you do to speed up a tumbler will produce the same added load on the motor. This is just an easy way to accomplish the job.
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