meta7
starting to spend too much on rocks
Member since June 2010
Posts: 164
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Post by meta7 on Feb 22, 2014 15:27:08 GMT -5
I want to build a shaft and arbor to put my Nova wheels on and I was wondering if there is a way to have a setup without threating the ends of the shafts? If I used a shaft collar, how could I get enough pressure so that the wheels lock in and do not rotate when pressure is applied to them?
If anyone has any creative ideas, please let me know.
Thanks, :-) Dave
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Post by pauls on Feb 22, 2014 15:49:58 GMT -5
Ummm, the only way I can see to do that would be to drill and tap a threaded hole in the nova then a set screw into a depression on the shaft. A problem I can see with this is that unless the shaft and wheel is a very tight fit it could force the wheel slightly to one side. You could get around this by putting two set screws on opposite sides though.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Feb 23, 2014 0:01:05 GMT -5
Think about drilling and tapping both ends of the shaft and bolting a disc the same diameter as the wheel spacer sleeves to each end. One sleeve would have to extend a little beyond the end of the shaft so when the bolt on that end is tightened, it would push the whole works[wheels and spacers] against the disc on the other end. A shaft collar on one end might work with two setscrews about 120 degrees apart and spots the depth of the drill point [bullet holes] drilled in the shaft under the screws to provide a very firm grab on the shaft.
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Post by Rockoonz on Feb 23, 2014 1:06:37 GMT -5
Amazing the expense and trouble folks go to to "save a few bucks". Every equipment building thread I have ever read that starts like this does not end well, and I have seen plenty. I almost passed on buying a rock estate a few years ago when after making my offer the person selling the estate took me out back to show me the rusting pile of "awesome home made lapidary equipment" that I had to haul off as part of the deal. I should have passed on it, the entire trailer load went directly to the scrap yard. cpdad Kevin might still be turning shafts to order, try him first, you won't regret doing it right. Lee
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drjoe
off to a rocking start
Member since December 2006
Posts: 1
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Post by drjoe on Feb 26, 2014 12:23:00 GMT -5
If you don't need the threaded shaft no reason to spend money on it. (personally I like the end pads).
You need (2) 18" pieces of 2x4 with a hole drilled in the wide side (and centered lengthwise) slightly larger than the shaft and (2) appropriate length pipe clamps. Install one shaft collar where you want it on one end, stack the wheels with appropriate spacers, then install the other shaft collar loosely. Place the end with the tightened shaft collar in the hole of one 2x4 and the other 2x4 over the other end, use the pipe clamps to clamp the wheels together LIGHTLY, alternating pressure on the clamps. Now lock down the loose shaft collar. Remove the clamps and it's done.
Dr Joe
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