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Unread 28-02-2004, 22:49
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Re: Clamping wheel hubs

whats the (effective) diamater of the plate? or more relevently, what is the surface area that the aluminum has to grip? i.e. 1sq" or 15sq"s?

i couldent tell you off the top of my head what it is, but there is an equation for friction coeficents between diffrent materials. however it sounds like it would work. some advice however, roughin (sp?) the aluminum (not the plastic) with some hevey grit sandpaper. also, consider some type of centering device depending on how much weight is on the wheel. do the plates have to keep it trued also? or can the unkeyed hub bear weight. if your just using it for drive, youd be suprised what 30 or 40 ft-lbs of torqe on some bolts can hold. however depending on the traction of the wheel you may need more bolts...

also there have been some problems (do a search) with people keying aluminum plate. the steel keystock rips right thru the aluminum key, making the slot wider and wider untll it becomes unuseable. a steal shaftcoller epoxyd or heat fitted onto the alumunum would do you good.
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Unread 28-02-2004, 23:02
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Re: Clamping wheel hubs

there is approximately 1.3 sq inches of area that the force is applied to on each side of the wheel. The center section of the wheel is a sort of spoked design, that's why the area is so low. You can see a similar wheel here http://www.northerntool.com/images/p.../155123_lg.jpg I will not be using the bearings in mine.

The drive flanges do not have to center or true the wheel, I have that taken care of. As for the keyways enlarging, I have that under control also.
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