rear axle mounted disc brake caliper

[robjarman]

hi - today I saw an oldskool Orange P7 with rear disc conversion - the caliper was a solid ribbed affair, cable pull, mounted on the rear axle with a block that abuts the seatstay and prevents forward rotation under braking. the hub was an old Hope. the caliper had no name/label.
any ideas what make this caliper system is and how effective it was/is - I have a '94 Explosif with no rear caliper frame mounts so this looked like a good option - is it?

cheers
Rob

 

[Charlieboy28]

brake therapy muchio expensive

http://www.shop.therapycomponents.com/B ... T1001C.htm



brake therapy copy very reasonable

http://www.ebay.com/itm/New-MTB-Bicycle ... 0778309%26

A2Z cheap and cheerful A2Z

http://www.woollyhatshop.com/brake-spar ... at_58.html

 

[Rampage]

Hope used to do one that used a shorter hub axle.

http://www.flickr.com/photos/16732514@N03/sets/72157622551067909/

 

[robjarman]

many thanks for those examples - really helpful - think I'll stick with my XT V brakes on Mavic ceramic rims...

you did not come up with the type of rear disc set up I saw on that Orange, though - wonder what it was? - wish I had a cameraphone!
cheers
Rob

 

[boxxer]

Sounds like a mark 1 Hope cable disk system

Check out a member on here called The Ken in Macretro, he has a pair on his Xizang....

 

[dvatcmark]

These work pretty well , got a couple on my konas


http://www.rocknrollbikes.com/trials/br ... erter.html

 

[secret_squirrel]

Third post down

http://www.retrobike.co.uk/forum/viewtopic.php?t=94741

I have never understood why a brace like the Dave lloyd but bolted on isn't the preferred solution for disc brake mods - much more elegant to brace it between the seat and chain stays than those ugly torque arms. I guess the advantage is that the brake bosses and the dropouts are known strong points whereas the stays could have had the bejesus butted out of them at any point along their length.

 

[velomaniac]

Torque arms can be bad news if you canti mount isnt strongly welded on. Used one on my Trek 9500, the post mount was bonded/riveted on not welded, torque arms damaged it somewhat

Those A2Z ones dont use a torque arm though and seem quite effective.

 

[robjarman]

thanks - that's the little beastie I saw - so it's a Hope Mk1 cable operated - really useful link that - cheers
Rob