Here is the latest update for anyone interested.
I have had a busy few months moving house and all things bikes have been put aside slightly. Well, I'm back on it now, and with full force too.
I managed to get some Grey 317 disc rims and swap them into my wheels, but with the addition of a new rear hub mentioned earlier. The old White Industries rear hub and Ceramic 217's have gone over to HarryCrumb in a deal.
I built the wheels with alloy nipples to lose some weight. I then aquired another 5 bolt 155mm rotor to match the front. This had to use chamfered bolts to clear the horst link. I made sure I used threadlock on them, as I have had discs come off on rides when it's not used!! I kid you not.
After an hour fishing around the workshop of Leisure Lakes bikes, we found all the necessary bits for the job, including braided hose, bleed nipples, hose attachments, sintered pads and a brand new pro lever. I should mention that I actually sold the mini caliper from earlier pictures as I didn't realise I already had a C2 one sat in a box in my shed! Embarrasing what I forgot I owned.
My cardboard homemade disc adapter was sent off to a guy in Nelson, who was confident that he could copy my template and drawings for about £15 posted. This would be in 2mm stainless, and to be honest weight is not an issue. You can hardly tell it's in your hand. Some people felt that the 2mm steel would not be strong enough, but my theory was simple. If the disc is 2mm and the caliper is practically held in place by the caliper when the brakes are applied, then why would the adapter need to any stronger than the disc?
Anyway, the pictures speak for themselves really. I'm quite proud, as the disc is exactly in the middle of the caliper without any work required to my original template, and no spacer washers were needed. Luck or planning? who knows! For anybody wishing to do the same, the templates are available from this guy...
http://www.cylex-uk.co.uk/company/j-ros ... 28877.html ...and probably for about £10 posted.
Also, after a big Lakes ride, the frames main pivot was practically hanging off, so I took the liberty (read essential work required) of ordering some new horst links and a main pivot from Brion at Amp Research.
Some of you may notice that the horst links are different from those usually found on Amps. These are the early type, which clear the disc. They can be made by threading the steel washer with an M6 thread, and then using a button head M6 bolt inside of the M5 nut and bolt arrangement. Brion said that you could turn the link around the other way, but this looks neater.
During the weekend in the Lakes, it was clear that the Gore cables were quite useless, and were working on some kind of delayed ESP shifting, so I replaced them at the roadside from a LBS. When I got home, I ordered some braided outers to match the brake cables.
Oh yeah, the Amp was fantastic on the trails. I absolutely loved every minute of it. It really can handle quite a lot. It's probably best on the flowing singletrack through the woods. I couldn't believe how fast it was but still fully controlled.