C5 Help > Tried & Tested : Share your good,or bad, experiences

Derailuer Hub - anyone tried fitting one?

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kamztrad:



Hope these photo's help, they show the brackets fitted both sides of the 7 speed hub, the brackets are made from 2mm thick aluminium sheet, which are reasonably easy to cut and shape, and are bolted to the c5 chassis and a hard wood member fitted across the chassis between the 2 hubs - the hub sprocket is 20 teeth, and the one welded to the sprocket body is 22 teeth I think - the output sprocket (welded one) is aligned with the freewheel cog on the c5 axle, and the input from the pedals is slightly further to the right, but due to the length of chain run between pedals and sprocket this has not caused any problems - I have used this method for both my 3 speed and 7 speed hubs without any probs.  ;) ;)

jockywilson11:
Where did you get the output cog then?

dantheref:
Thanks kamztrad that's really usefull! Did you get a flat cog to put on the sturmey archer?

What is it like to ride with the 3 gear system?

Thanks

Dan

kamztrad:
If you search E-bay for Sturmey Archer Sprocket 22T you will find the sprocket - it is dished but to weld it to the hub flange I had to machine out the hole in the middle to the correct size which in effect removed the dished part.
I have to say the c5 drives superbly with the 3 speed hub combined with my 12/24 volt relay set up. I have increased the chassis length by 100 mm which allows me to extend my legs and pedal properly which is more comfortable and enables me to use the maximum power from my longer legs.
As a consequence of the longer chassis I have had to increase the ride height at the front which allows the front wheel to protrude slightly beyond the front bodywork. I have also designed my own bespoke dipped/mainbeam headlight and improved rear lights and indicators.
If I get some time over the next couple of days I'll post a couple of pics for you.
In summary the 3 speed gives you a nice low ratio for pulling away and a medium and high ratio to enable me to assist the motor at higher speeds for easier cruising and longer battery and lower motor temperature.

dantheref:

--- Quote from: kamztrad on  21, July, 2014  - 23:58:33 ---If you search E-bay for Sturmey Archer Sprocket 22T you will find the sprocket - it is dished but to weld it to the hub flange I had to machine out the hole in the middle to the correct size which in effect removed the dished part.
I have to say the c5 drives superbly with the 3 speed hub combined with my 12/24 volt relay set up. I have increased the chassis length by 100 mm which allows me to extend my legs and pedal properly which is more comfortable and enables me to use the maximum power from my longer legs.
As a consequence of the longer chassis I have had to increase the ride height at the front which allows the front wheel to protrude slightly beyond the front bodywork. I have also designed my own bespoke dipped/mainbeam headlight and improved rear lights and indicators.
If I get some time over the next couple of days I'll post a couple of pics for you.
In summary the 3 speed gives you a nice low ratio for pulling away and a medium and high ratio to enable me to assist the motor at higher speeds for easier cruising and longer battery and lower motor temperature.

--- End quote ---

Perfect thanks...


Some pics or info on the 12/24 relay set up would be good i assume you are not using a control box and pod in that set up? Was considering doing something similar.

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