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#31
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Re: Thunderhex and Thunderhex Bearings
Even on that front, you will often have trouble getting gears/pulleys to fit over hex purchased from a metal supplier. The tolerances just aren't very good and are often on the + side of 1/2" not minus.
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#32
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Re: Thunderhex and Thunderhex Bearings
On that note, do you have any supplies that you would recommend for hex 4140 steel? Haven't come up with a use for it yet, but it may be useful eventually.
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#33
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Re: Thunderhex and Thunderhex Bearings
We have had issues with aluminum hex from local metal suppliers being oversize, but steel hex seems to be usually undersized slightly (as much as standard Vex hex shaft is). I'm not sure if this is luck or just the way the steel is toleranced/manufactured.
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#34
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Re: Thunderhex and Thunderhex Bearings
Interestingly enough, McMaster's hex rod seems to follow the same trend. The steel 1/2" hex seems toleranced to be slightly under .5", whereas the aluminum rods are around +/- .006.
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#35
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Re: Thunderhex and Thunderhex Bearings
Quote:
Obviously machining it is annoying, but once it's done, you're probably set. -Aren |
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#36
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Re: Thunderhex and Thunderhex Bearings
Quote:
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#37
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Re: Thunderhex and Thunderhex Bearings
This thread reminds me of why I preferred round shaft prior to all the major FRC CoTS suppliers switching to hex.
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#38
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Re: Thunderhex and Thunderhex Bearings
Turns out there was only 1 or 2 shafts that had deformed enough that the Thunderhex bearing would not go on.
Thanks for all the tips and tricks, a couple we knew, but a couple we didn't. |
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#39
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Re: Thunderhex and Thunderhex Bearings
Quote:
-Mike |
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#40
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Re: Thunderhex and Thunderhex Bearings
I guess we got lucky.
We bought an 8' length of the 1018 cold rolled hex from onlinemetals.com. It fit our bearings as well as any of our aluminum shafts. The ends were snug (presumably from shipment) but still looser than a press fit. Along the length of the shaft, the bearing slid freely. |
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