joytech rear hub
 

Today I came across an interesting rear hub.
It is a single speed mechanism but unlike the
familiar Torpedo hub the brake cylinder is made
out of two loose parts. To mount the thing
first a cylinder screw is put into the hub
shell, then the brake parts are dropped down,
last a cone is put down the axle to hook both
into two pins, *and* into the brake parts that
are positioned at opposite side.

The hub doesn't have a name on any part what
I can see save for the brake arm which has the
word "joytech" on it.

Anyone has any information or images from this
kind of hub?

--
underground experts united
http://user.it.uu.se/~embe8573

joytech rear hub
 

On 11/10/2017 6:39 AM, Emanuel Berg wrote:
Today I came across an interesting rear hub.
It is a single speed mechanism but unlike the
familiar Torpedo hub the brake cylinder is made
out of two loose parts. To mount the thing
first a cylinder screw is put into the hub
shell, then the brake parts are dropped down,
last a cone is put down the axle to hook both
into two pins, *and* into the brake parts that
are positioned at opposite side.

The hub doesn't have a name on any part what
I can see save for the brake arm which has the
word "joytech" on it.

Anyone has any information or images from this
kind of hub?


copy of Shimano CB:

https://bluebirdcycles.files.wordpre...0&h=366&crop=1

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

joytech rear hub
 

AMuzi wrote:

copy of Shimano CB

100% correct

--
underground experts united
http://user.it.uu.se/~embe8573

joytech rear hub
 

AMuzi wrote:

copy of Shimano CB

Are there any secrets to this hub? Or just
diesel everything, grease bearings?

--
underground experts united
http://user.it.uu.se/~embe8573