rear axle with motor sprocket on ebay.

rkosiorek

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• Sep 20, 2009

• #1

i spotted this on ebay this morning. Item #290341659202

View attachment 1



under $40 delivered. i don't think it includes the freewheel. but it may be what some are looking for for a chain drive.

rick

 

TylerDurden

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• Sep 20, 2009

• #2

The exploded drawing shows two freewheels, but the photos seem to show a fixed disk on one side.

 

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Miles

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• Sep 20, 2009

• #3

Details of the GruBee hubs on the link here:
http://endless-sphere.com/forums/viewtopic.php?f=28&t=7305

 

TylerDurden

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• Sep 20, 2009

• #4

It appears the GruBee hubs are quite different.

 

Miles

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• Sep 20, 2009

• #5

They have two types: http://www.grubeeinc.com/USA/BIKES%20&%20FRAMES.htm (scroll down)

 

TylerDurden

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• Sep 20, 2009

• #6

AFAIKT...

The grubee hubs have a threaded boss for mounting the freewheel or rigid adapter, both held captive by the drum flange.

The ebay hub is drilled through the spoke flange to mount the sprocket & standoff.

 

Miles

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• Sep 20, 2009

• #7

Yes, the YXM one is different. Haven't seen that before.

 

liveforphysics

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• Sep 20, 2009

• #8

This perticular example might not be the best product, but I'm very pleased to see products being made to suit this function. Its a step in the right direction.

 

TylerDurden

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• Sep 20, 2009

• #9

liveforphysics said:

I'm very pleased to see products being made to suit this function.

Click to expand...

Me too... but good ones.

My point in that regard, was to distinguish the illustration as erroneous or misleading.

Notice the spacer on the axle to get the nuts out past the sprocket. That leads me to think the bearings are centered back by the spoke flange... a good strategy for easily bending the axle.

This hub in particular looks like a weak hack, compared to simply bolting a sprocket to a quality disk-ready rear hub; or getting a grubee, if a freewheel is required.