Skipper
spending too much on rocks
Member since March 2003
Posts: 258
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Post by Skipper on Dec 13, 2004 23:18:18 GMT -5
This flywheel came on my used 33B, but I noticed that the barrels turn slower than my 3As. For my fellow 33B users, Does this flywheel look larger than yours? I suspect it is the wrong size. I will likely add some foam padding to a roller, but was curious... If you want to see my entire setup, I just added pics to my thread "Skipper" under Visitors and Members.
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WarrenA
fully equipped rock polisher
Member since November 2003
Posts: 1,530
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Post by WarrenA on Dec 14, 2004 0:19:00 GMT -5
did you count the rpm of the barrel? There seems to be a great deal of difference of opinion on just how fast the barrel should turn, for myself I don't mind if it turns a little slower, it will handle a little heavier load than one that turns faster.
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Skipper
spending too much on rocks
Member since March 2003
Posts: 258
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Post by Skipper on Dec 14, 2004 15:29:55 GMT -5
I haven't counted RPMs, but I know that it runs at about 2/3rds the speed of my 3a's.
I've had the same thought as you, though. Slower is not always bad, especially in the final polish stage.
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WarrenA
fully equipped rock polisher
Member since November 2003
Posts: 1,530
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Post by WarrenA on Dec 14, 2004 22:41:17 GMT -5
in the picture --- is that a heavier duty belt drive on the machine? that would explain the pulley
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Skipper
spending too much on rocks
Member since March 2003
Posts: 258
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Post by Skipper on Dec 14, 2004 23:33:44 GMT -5
na - that's a standard 3A motor.
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69beeper
spending too much on rocks
Member since August 2004
Posts: 377
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Post by 69beeper on Dec 15, 2004 13:07:03 GMT -5
The "flywheel" on my 33Bs look to be about the same size. Mine sticks up past the frame there about a 1/4" or so. Can't tell from the photo, does yours?
Jimmy
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69beeper
spending too much on rocks
Member since August 2004
Posts: 377
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Post by 69beeper on Dec 15, 2004 13:08:19 GMT -5
...if you want a measurement, let me know.
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Post by connrock on Dec 15, 2004 17:12:48 GMT -5
Hi Skipper, I can't remember where I got this from but here it is anyway,,,,,,,,,,,, Suggested speeds for various sizes and types of drums in revolutions perminute are: Drum Diameter 4.5' 6" 8" 10" Hexagonal Drum 35 32 29 25 Round Drum 60 54 48 42 I have found that in most cases the tumblers we buy are much too slow for roughing and too fast for polishing. I have made several different size pulleys for all my tumblers so I can change speeds to suit my needs.I've also had to make new motor brackets that are adjustable for the different size belts. Some of the folks here have wrapped electricians tape around the motor pulley to slow things down and around the tumbler shaft pulley to speed it up. Tom
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Skipper
spending too much on rocks
Member since March 2003
Posts: 258
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Post by Skipper on Dec 16, 2004 22:28:47 GMT -5
This tips a keeper - thanks!
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Post by Jack ( Yorkshire) on Dec 30, 2004 7:11:50 GMT -5
Hi Skipper, Ever tried a dimmer switch ? it slowes it down before it's out of Phase, If you have one going too slow, (sleve it) put the shaft through a rubber pipe, Too fast ever tried to fit it in a carrier ? or rubber sleve it a old car ,truck or tractor inner tube,? they rotate slowly so a few thou of rubber makes a differance.
Yours Jack (yorkshire UK)
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