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Old 06-13-13 | 04:18 PM
  #7  
loganc10
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Joined: Jun 2013
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Hi,

Wheels aren't rocket science and your severely over complicating
the issue, as are are those called "engineering" students, who
seem to have never heard of "KISS" and real engineering.

The lack of understanding of the real issues in their wheel fixtures is awful,
clueless, and ineptly pointlessly complicated. It isn't complicated at all if
you understand wheel design for different applications.

It wouldn't be hard to mount those wheels directly on the motor flange.

rgds, sreten.
I am an engineering student, which could very well be why I apparently am way over complicating this. However, maybe if I were a mechanical engineer instead of an electrical I may not be having such of a hard time with it. Admittedly, if I knew anything at all about "wheel fixtures" then I probably wouldn't be asking for advice either. But, unfortunately, I do not know crap about bikes, wheel fixtures, or the "real issues" of them.
However, I am always willing to learn, and even better if its from real engineers who have heard of KISS.

While you say it is not complicated at all to mount these directly to the motor flanges, would you care to share how you personally would do so?

I think you could make a replacement core the OD of the bearings, and press that in.
Add Loc tite., the core should be able to use that motor and its 4 Bolts.

unless it wont handle end loading .. then You may need the wheel on a separate axle and chain drive
onto it.

then have the keyway for drive torque transfer..
Thanks for the suggestions,
The segway(its the blue one in the picture above) is made out of steel, then the heavy duty motors, then on top of that the batteries all together add up to around 70 pounds without the rider. I figure that weight combined with end loading, it would end up breaking.
As for your other suggestion, the Segway frame and motor mounts are designed for the wheels to be directly attached. There isnt any room for the chain/sprocket/etc.

Could you use fixed gear hubs without the axles? Drill a sprocket for the hub bolts, then thread the wheel on to it? You'd have to hit a pretty big pot hole going pretty fast to crack the hub shell.
This is idea I have yet to consider. I will research more about it.

The bolt pattern on the motor is 1 inch diameter, with 5/16 bolts. http://www.robotmarketplace.com/prod.../npc-64038.pdf
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