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flip flop dynamo/generator?

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flip flop dynamo/generator?

Old 07-19-18, 09:49 AM
  #1  
Philphine
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flip flop dynamo/generator?

just wondering if such a thing exist.

i picked up a three speed hub that has the non drive side threaded for i guess a disc brake adapter.

https://www.ebay.com/itm/Shimano-Vin...item35e4197347

just wondering if there's like a spin on dynamo or generator that could work with something like this. i've never heard of one, but the thought crossed my mind and it might be a good use for the threads since i have them. thanks if anyone knows.
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Old 07-19-18, 10:16 AM
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fietsbob
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how many machine tools do you own or can hire ?

you may be able to fabricate something that the market , you alone,
is too small to make a factory deem it important..

there was a generator made with a belt.. for the front wheel..
engaged by a lever you folded into the spokes

using a BB lockring for the threading.. on that hub
you may be able to fabricate a V belt/ O ring scheme to use a bottle dynamo turned on its side?



... good luck with your DIY...




/..
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Old 07-19-18, 04:27 PM
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Sunup Eco MaxiDyn 6V12W Bicycle Spoke Dynamo (hub dynamo/dynohub alternative + USB)



Sunup Eco MaxiDyn 6V12W Bicycle Spoke Dynamo (hub dynamo/dynohub alternative + USB) - Sunup Eco Spoke Dynamo - Hub and Spoke Dynamos | Intelligentdesigncycles

https://bikerumor.com/2012/10/23/sun...er-wo-the-hub/
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Old 07-20-18, 10:25 AM
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fietsbob
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Ah the Creative energy of ROC...

does not use the threaded left end, though.. of OP's hub find..





...
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Old 07-20-18, 11:09 AM
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Dan Burkhart 
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Originally Posted by Philphine View Post
just wondering if such a thing exist.

i picked up a three speed hub that has the non drive side threaded for i guess a disc brake adapter.

https://www.ebay.com/itm/Shimano-Vin...item35e4197347

just wondering if there's like a spin on dynamo or generator that could work with something like this. i've never heard of one, but the thought crossed my mind and it might be a good use for the threads since i have them. thanks if anyone knows.
The hub is threaded for a band brake. Same diameter and thread pitch as a freewheel, or English bottom bracket.
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Old 07-25-18, 09:31 AM
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Philphine
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thanks, this may work (if i decide to pay for one). i have some spin on disc brake adapters. maybe i can make an adapter plate bettween the two instead of spokes, as i'm looking to use the hub like a mid-drive (i may not be using the right name for it), like an adult trike uses. wish there was a 12v version though. thanks again.
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Old 07-25-18, 11:46 AM
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a mid drive can use one of the cogs on the cassette , losing 1 speed..
another approach cog attached to a hub flange ..

disc brake on the RH thread on left side of hub tightens from braking forces ,

but would inscrew if transmitting power..





...
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