Discussion in 'Bicycle Mechanics and Repairs' started by ianMac, 17 Jul 2017 at 11:35.
does anyone know where I could get one of these, or similar?
I've got a similar but derailleur set up on the back of my trike,
with mine though there isn't a brake in the hub, the brake is on the rear 'through' axle.
Mind you if anyone does know where you can get em from @mickle might.
Thanks. The brake is unimportant at the moment. It's the internally geared hub that I really want! It's going on this!
I thought George Longstaff used to adapt the hubs for his trikes, ie not a production item.
Pashley use the system on their trikes, otr at least used to. I got sprockets from them when I used a 3-speed sturmey to add gears to teh pedals on my Sinclair C5
Yes, it looks like an unusual fixing for an extra cog onto a Shimano Nexus 3 coaster-braked hub (current model SG-3C41).
The nearest production models are probably the SA hubs which take a 9-speed cassette, such as the CS-RK3 (disc braked) or CS-RF3 (rim braked).
Edit: that's wrong: the extra cog is replacing a set of spokes = it's driving the rear axle. Oh well, I leave it here as an interesting note of hybrid hubs.
The gears aren't on the drive axle, they're on a 'mid-drive' set up with a 'slave' or 'dolly chain' driving the back axle. Only trouble is if this secondary chain fails the you've no back brake.
The easiest way I can think of doing something like that is to get a hub with a disk brake.
Then machine the extra sprocket so you can bolt it to the hub in place of the brake rotor.
Velosolo have done it for you.
HEY! Thanks. Will contact velosolo.
Found exactly what I am looking for! On eBay!!!
Thanks for all your help.
Separate names with a comma.