retro drive mount
11-30-14 | 04:10 PM
#3
Not quite there yet
Joined: Feb 2013
Posts: 999
Likes: 2
From: Monkey Bottom, NC
Bikes: A bunch of old steel bikes + an ICE trike
Do you mean a retro-direct bike? I have only seen one and have to say that the concept is quite weird. 2 gears with low activated when you pedal backwards. If this is what you have, are you restoring or trying to recreate a modern version?
11-30-14 | 06:36 PM
#4
Old fart
Joined: Nov 2004
Posts: 26,345
Likes: 5,251
From: Appleton WI
Bikes: Several, mostly not name brands.
If it's a retro-direct the OP has his work cut out for him. IIRC, those need a special double freewheel with one cog ratcheting in one direction and the other ratcheting in the other direction.
11-30-14 | 06:44 PM
#5
Senior Member
Joined: Sep 2014
Posts: 3,902
Likes: 680
My parents noticed this kind of mechanism in widespread use, in China.
11-30-14 | 07:51 PM
#6
Thread Starter
Junior Member
Joined: Sep 2012
Posts: 145
Likes: 1
Yes retro direct is what im looking to build. If anyone knows how to build one, i'm looking for a bracket to mount the jockey wheel to reverse the action. And actually ive been able to build a functioning retro direct pilot to prove concept using a standard bottom bracket shell and two freewheels. Any advice on where i could find a bracket to mount the jockey wheel?
11-30-14 | 09:13 PM
#7
Old fart
Joined: Nov 2004
Posts: 26,345
Likes: 5,251
From: Appleton WI
Bikes: Several, mostly not name brands.
Yes retro direct is what im looking to build. If anyone knows how to build one, i'm looking for a bracket to mount the jockey wheel to reverse the action. And actually ive been able to build a functioning retro direct pilot to prove concept using a standard bottom bracket shell and two freewheels. Any advice on where i could find a bracket to mount the jockey wheel?
12-01-14 | 06:40 AM
#8
Palmer
Joined: Mar 2007
Posts: 9,153
Likes: 2,263
From: Parts Unknown
Bikes: Mike Melton custom, Alex Moulton AM, Dahon Curl
Not that tough. Sheet metal, mounts on BB. Tools: hacksaw, drill.
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