Hobbed bar, hyena v1.0
by laszlo, published
I call it the hyena, because hyenas have the strongest jaw of all mammals.
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is it me or does the hobbled bolt look like a drive roller for a welder. mite be somthing to take a look at. http://www.usweldingsupply.com...
I think these are cut with real hobs rather than using a tap as a hob, though it still seems to be a worm gear hob rather than one with perpendicular teeth.
Laszlo also has an indiegogo running for gears more like what you are talking about: http://www.indiegogo.com/mini-...
I think if you used a larger side tap (maybe 5/16" fine or 3/8" fine) on an even larger main bolt (7/16" or 1/2" or even 5/8") it would work well. Bigger tires spread the load, which would minimize the filament squish. This technique should work, but instead of a pulley on a fixed shaft, you would mount your bolt in a bearing fixture:
The trick would be to let the side tap cut in only say 2x the depth of the side tap threads. Then you are approaching the nice MK5 drive gear :)
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