finding it really difficult to find a definitive timeline? nothing on search here or google. does anyone have any info?

I have some information from their 08 brochure but it is sketchy, I spoke to one of the founders about it and got the impression it was hectic development so a few models may have crossed over a bit.

All I really know is when I got mine and that they have a matching rear sitting in their foyer museum.

I'll try and dig out the brochure and put in the info here over the next week or so.

in the mean time....
what I believe to be a Mark 1 cable disk bought in dec 91:


and fitted...

thanks mate, came across an old thread with your cable disc innit. very nice.

All I am wondering is, what year the C2 came out and what was around before it?

cheers

Mot sure when the C2 started may have been as early as 93, they moved to hydraulics pretty quickly.

Here is the Mark 1 caliper with what I call a mark2 hub...


From 95

found some more on flickr... Dave Yates Swamp Donki - very nice - the guy seems to be part of velocake does anyone on here know him? would love to see more pics of his bike.

http://www.flickr.com/photos/nickw3216/sets/1678350/

It's strange how the mk1 kit is 6 bolt (which later became the standard for years), then moved to 3 bolt, then 5 etc. Wonder why they didn't stick with 6 bolt?

link to the instructional video I did for fairfax pat on how to mount the piston... http://www.youtube.com/watch?v=qLDtPS4LTlg

Pads for the cable calipers are CFA248 - look at the drawing to confirm - the photo is rarely accurate.

http://www.ebcbrakesdirect.com/mountain ... echanical#

you can also order them via your LBS direct from hope.

there are a few compounds available if you seach google for CFA248 brake pads - you get a few links.

They are much heavier than OEM as the pad is on cast metal instead of the original CNC'd alu. I've kept my old ones in case I ever find out how to make my own (I think you just cast the compound onto the bare metal plate)

Nice vid

Found these here http://www.retrobike.co.uk/forum/viewtopic.php?t=70125 page 2
and more here http://www.flickr.com/photos/nickw3216/2404017822/

Brilliant, I can't believe I missed that for sale thread! I'll collate his posts here for reference....

*******************
Disc.



1992 GT fork from my original Karakoram, custom brazed by Dave Yates to fit Hope mechanical calipers, the bosses ground off. Resprayed black.
It's currently sitting unused and unlikely ever to be. It fits 1 1/8" headsets and steerer tubes of 10cm length. If it's of any use to anyone for a restoration project send me a PM and make me an offer. It's stickered up as above.

********************
In November 1991 (or thereabouts) MBi featured Hopes mechanical disk brake. In early 1992 the second batch of 50 was finished. Here's a pair a couple of days after their fitting. In those days you could still visit the mill on Skelton Street, Colne, for a fitting.





Eagle eyed will spot the cable mounted return spring that didn't make it past the third batch, and marks on the disc caused by the nitride coating discolouring. Nitrided discs eventually polish up really nicely, work sharply, and have a longer pad life because shit doesn't get embedded in them. Bring back nitriding for modern disks I say! Also solid axles that you had to remove to get the wheel out, large flange hubs with 6-bolt spider (some things never go out of fashion). And yes those pedals have been painted to match the GT splatter paint job. If colour coded pedals were good enough for Jason Shackleton...

By 1993 I'd had a custom caliper mount brazed onto the fork.

Fork and brake caliper now properly for sale here...

http://www.retrobike.co.uk/forum/viewto ... 073#502073

*********************
In 1992 Hope released their first disk brake using a floating caliper and mechanical actuation. After a year of racing on the hose-clipped version I gave my 1991 GT Karakoram forks to Dave Yates who brazed a custom mount (think - a flat plate of steel with the right holes drilled and tapped into it by Hope) onto them. At the same time he removed the cantilever bosses and resprayed the fork gloss black.

I used to swap between this fork for NEMBA sundays (XC day) and a Pro-Circuit suspension fork for Saturdays (DH). Here it is during the hillclimb in 1993 at the Nationals, Malvern.



early titanium hub/screw on spider, e.g.:


early titanium hub/splined spider, e.g.:

Came across tis while flicking through some back issues

EDIT: dammit you already posted that, thought it looks familiar

I have this front brake assembly from another member on this forum, and am sure he won't mind me using his pics to illustrate

Having spoken with Justbackdated he thinks its a prototype assembly, mounting on and in front of the Right Side fork leg

I'm thinking about fitting it to my Pace RC35 equipped Kona Explosif, but there's a dilemma.....

Pics.....















Dilemma as shown in the following two pics.......






...... the caliper mounting bracket is not suited to the RC35 fork leg - look at the pic showing position of caliper and mounting bracket - caliper "flange" should (i think) be between the two mounting bracket "flanges" for security. However, it only alligns with the disc properly when placed as shown - ie inboard of the mounting bracket. Think I need a new fork leg bracket, or perhaps use a spacer and longer bolt with locknut (keeping well away from spokes)

any views?

mmm... that prototype looks identical to my normal one?
It might actually mount that way on mine too, (too dark to check tonight), but it could just be you have a mount for a fork with the dropout in a different position to the fork you have fitted it to.

Is the caliper flange threaded? ...and are both sides of the mount?

pic from further up the page - I think boxxer might have a higher res image of this but I can't be sure.

here we go.... your's looks set up correctly.