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Old 08-17-2012, 10:09 AM   #31 (permalink)
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Originally Posted by Otto View Post
1. Wouldn't it work even better to make the wheel into the motor? (i.e., put the permanent magnets on the wheel as close to the rim as possible, further from axis of rotation, for more torque.) This would be like those stereo LP record players where the turntable is the motor.
...another example are the pancake-motors in harddisk drives, ie: "rotational" stepper motors.


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Old 08-17-2012, 07:37 PM   #32 (permalink)
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...another example are the pancake-motors in harddisk drives.
Suppose you wanted to use the wheel-is-the-motor idea on, say, a bicycle wheel: How hard and expensive would it be to add magnets to the bike spokes, and windings to the frame or fork? How hard to manage the throttle?
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Old 08-17-2012, 09:35 PM   #33 (permalink)
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Otto -- Google 'MIT wheel' It turns out the way to control something inside a spinning bike wheel is through Wi-Fi.
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Old 09-07-2012, 09:08 AM   #34 (permalink)
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Just saw an article about this on Yahoo today: The Kit That Turns Any Car Into A Hybrid | This Could Be Big - Yahoo! News

Seems pretty cool, but like it's been said already, I don't see how $3K would cover all the necessary components.
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Old 09-07-2012, 12:10 PM   #35 (permalink)
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Just saw an article about this on Yahoo today: The Kit That Turns Any Car Into A Hybrid | This Could Be Big - Yahoo! News

Seems pretty cool, but like it's been said already, I don't see how $3K would cover all the necessary components.
Thanks! The part I liked was hearing the details of the retrofit requirements :

Quote:
You need about an inch of clearance from the outer diameter of the caliper to the inner radius of the wheel to fit the rotor in and convert this to a plug-in hybrid.
I would have to redo or delete my rear wheel skirts, poor me, .

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Old 09-07-2012, 12:20 PM   #36 (permalink)
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Hello -

Cross-Forum-posting :

MTSU Students Retrofit Hub Motors (Converting an Accord into a plug-in Hybrid) - SaturnFans Forums

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Old 09-07-2012, 12:35 PM   #37 (permalink)
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Otto -- Google 'MIT wheel' It turns out the way to control something inside a spinning bike wheel is through Wi-Fi.
Hmmmm, that sounds dangerous in a car. Hackers could break into the wifi connection and mess with it. If feasible then the wheel would need to make "failsafe choices" on how to behave as a function of sensors that are independent of the wifi commands.

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Old 09-07-2012, 01:24 PM   #38 (permalink)
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freebeard -

Hmmmm, that sounds dangerous in a car. Hackers could break into the wifi connection and mess with it. If feasible then the wheel would need to make "failsafe choices" on how to behave as a function of sensors that are independent of the wifi commands.

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Nope, just plain IDEOTIC. A couple wires are NOT that hard to do.
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Old 09-07-2012, 03:24 PM   #39 (permalink)
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Quote:
IDEOTIC
So, not an acronym then? It's MIT's idea not mine. I'd use Bluetooth.
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Old 09-08-2012, 12:08 AM   #40 (permalink)
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Nope, just plain IDEOTIC. A couple wires are NOT that hard to do.
I know what you mean, but I can understand that it's "saveiotic" in the sense that no wiring = lower cost in exchange for higher risk, aka you only have to concentrate on the wheel-well of the car for now and the interweb of bad guys later.

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