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The Range
Ammo & Reloading
DIY wet tumbler
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<blockquote data-quote="mtnboomer" data-source="post: 2692536" data-attributes="member: 32439"><p>BTW, here is a link to a page to calculate the rpms of your tumbler and to size the pulleys to get the correct rpms. Most tumblers run between 35 and 40 rpms. I know that sounds slow when you consider the motor shaft speed is 1725 rpms, but it's actually very simple. You have to calculate each segment separately to get things right - I used a 1 1/2" pulley on the shaft <em>(the smallest that can be used)</em>, then through calculation I determined a 5" pulley gave me the proper drive roller rpms, which in turn gave me the proper barrel rpms <em>(6" barrel)</em>.</p><p></p><p><a href="http://culvermotor.com/Engineering-Formulas/Pulley-and-RPM-Calculator.html" target="_blank">http://culvermotor.com/Engineering-Formulas/Pulley-and-RPM-Calculator.html</a></p></blockquote><p></p>
[QUOTE="mtnboomer, post: 2692536, member: 32439"] BTW, here is a link to a page to calculate the rpms of your tumbler and to size the pulleys to get the correct rpms. Most tumblers run between 35 and 40 rpms. I know that sounds slow when you consider the motor shaft speed is 1725 rpms, but it's actually very simple. You have to calculate each segment separately to get things right - I used a 1 1/2" pulley on the shaft [I](the smallest that can be used)[/I], then through calculation I determined a 5" pulley gave me the proper drive roller rpms, which in turn gave me the proper barrel rpms [I](6" barrel)[/I]. [url]http://culvermotor.com/Engineering-Formulas/Pulley-and-RPM-Calculator.html[/url] [/QUOTE]
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DIY wet tumbler
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