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Geek Culture / Electric Scooter Question..

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Sergey K
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Posted: 14th Mar 2012 22:30
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im about to buy Electric Scooter to my self,
and there is one question i wanna know about..
what is better, motor inside the wheel or motor that attached with gear to wheel?


this one is geared motor



this one is motor inside the weel:


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DeadTomGC
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Posted: 14th Mar 2012 23:13
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Well, by the look of it I'd say the one with the motor outside the wheel, but that's just because it looks bigger.


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Dark Java Dude 64
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Posted: 15th Mar 2012 04:10 Edited at: 15th Mar 2012 04:10
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Inside the wheel looks more efficient but by the gear ratio on the external one id say that the external motor has way more torque, not as much speed...

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Fallout
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Posted: 15th Mar 2012 12:15
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It depends on the motor. Electric motors work best under a certain load, so as mentioned already, the gearing will be set up (or not in case of the motor inside the wheel) to provide the best load for the motor.

I used to design and build electric planes. There was a perfect prop size for each motor to get maximum thrust and current draw, without putting the motor under too much load and thus burning it out. The amount of motors I cooked trying to get more power wasn't funny.

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Sergey K
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Posted: 15th Mar 2012 18:37 Edited at: 15th Mar 2012 18:39
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@ Fallout: but couldnt it be that the gear for the motor inside the wheel is the wheel it self? as you said, the perfect prop size of the motor, right?


and lets look at it that way:
in the motor inside the wheel, its more water proof, and nothing can get into it
in the other side, if something happens to the motor, you will have to change the whole wheel for that

but with the geared motor, the motor maybe easyer to break, but it also easyer to replace..

am i right?

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Fallout
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Posted: 15th Mar 2012 20:57
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Quote: "but couldnt it be that the gear for the motor inside the wheel is the wheel it self? as you said, the perfect prop size of the motor, right?"


Yeah, that's what I meant. There probably isn't any gearing as the wheel is the correct size for the motor.

I wouldn't make reliability your concern though. Electric motors are really really simple, and I wouldn't expect a scooter motor to fail. The on board battery will probably go first.

I would make my choice based on performance figures and range of travel, rather than where the motor is mounted.

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Sergey K
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Posted: 15th Mar 2012 21:30
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yeah well found one, 21 miles per hour speed, the battery is enough for 15 miles until battery discharging.. thats the one with motor inside the wheel..

the other version of the same scooter is that motor attached to wheel via gear is about 28 miles per hour speed, and the worst part is that the battery drains too fast on this one, only 7 miles for the discharging..

so i guess the motor inside the wheel is the best choice eh

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Fallout
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Posted: 16th Mar 2012 00:00
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Woah. 15 miles and 7 miles? That's terrible! You'd have to turn around as soon as you got off the driveway. I know there are electric motorbikes that do 70 miles and 70mph. I would've thought there'd be mopeds with similar ranges, if not the speed.

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Sergey K
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Posted: 16th Mar 2012 00:12
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Quote: "Woah. 15 miles and 7 miles? That's terrible"

well actually its more than avange speed here israel.
every morning i drive about 5 miles per hour to work with my car.
i cant really drive cuz there are lots of cars standing one by another at huge car jams at the mornings and at the evnings.. nothing to do actually.. the best way is to buy this scooter..
also with our fuel prices here in israel, there is nothing less to do is to move on to electric motors.. lol
its about 8 dollars for a gallon of fuel here
sux ass i know..

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Fallout
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Posted: 16th Mar 2012 00:36
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It's the same here, pretty much. Really expensive to run cars now. I would seriously consider getting an electric car when a) the battery technology moves on a bit, and b) I can get one second hand. Us driving about in petrol vehicles isn't sustainable. Prices are only gonna go up!

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