Please help: Shimano hydraulic rim brakes from 1970s

[Kkkona]

Hi,
Please help me if you have any information about the bike / brake.
It is a shimano hydraulic rim brake, and both brakes are operated with a single lever.
Any guess on the value?

Many thanks

 

[lewisfoto]

I have never seen that before

 

[Midlife]

.......I worked in a bike shop in the 70's and saw lots of things.........but nothing like that. Must be after that time IMHO.

Shaun

 

[Woz]

Wow. Do they work well?

 

[bigpantswheels]

Wow, I've worked in bike shops and been around bikes for 35 years and I have to say that I have never seen such a thing. I'm really curious, I hope someone out there can shed some light on this one.

 

[Kkkona]

Well, it works, and taking into consideration the vintage, I would say it is quite OK, but nothing close to Magura. But it was never an expectation

 

[lewisfoto]

My first thought was that these were built for a moped or some such commuter bike that never got imported. A little snooping around found another bike with a similar set up, also on a commuter type bike that was purchased in Japan.

http://classiccycleus.com/home/1975-mat ... al-sensor/

 

[Kkkona]

I found this on the web:
http://www.rodbikes.com/articles/disco- ... brakes.gif
The lever seems very similar

 

[lewisfoto]

Classic Shimano even has a conforming model code:

Model BC 300
Disc Brake with Auto Adjust

http://equusbicycle.com/bike/shimanocat ... index.html


About half of the way down page

 

[bigpantswheels]

What year was this?