Update October 2013: This bicycle has now been sold.
Over the last couple of weeks, my Thorn Club Tour has been going through its annual service. This involves cable checks, hub servicing and the like… and I’ve taken the opportunity to make one or two upgrades.
Chief among these have been the brakes. I had been running some pretty basic Shimano cantilevers that were salvaged from my old Dawes Galaxy. These had been OK, but the bike merited better.
I have now fitted Shimano R550 cantilevers, which are a marked improvement. These were very easy to install and configure, although I did find the springs a little slack on the rear set, yet too tight to mount on the third hole of the cantilever bosses. A little bit of gentle ‘realignment’ with some pliers soon remedied the issue, though.
Other changes include a new Deore chainset. I have no reason to ‘upgrade’ to XT or other variations here. Deore has been solid and reliable in the past and I see no reason why this won’t be the case in future. The new ‘set is supplied with an external bearing bottom bracket. Although I was initially sceptical of this technology on my Audax, it has proved to be very reliable.
Finally, I have added a layback seatpost to provide a bit more cockpit flexibility. This is a ‘Zoom’ post supplied by SJS Cycles. It offers a slightly more stretched out position, which I now prefer after making one or two tweaks to the Audax.
Anyway, here are some pics and the spec:
Frame: Thorn Club Tour 620S, Reynolds 725 tubing
Forks: Reynold 531st
Bars: ProLT 44cm (c to c)
Brake levers: Tektro RL340 black
Shifters: Shimano Dura Ace 9 spd bar end
Stem: Ritchey adjustable
Headset: FSA Orbit XLII
Brakes: Shimano RL550 cantilevers
Rims: Rigida Sputnik
Hubs: Deore LX 36 hole
Spokes: Double butted Sapim, plain gauge ‘strongs’ on drive side
Tyres: Panaracer Pasela Tourgruard 35mm
Crankset: Shimano Deore M590 22 32 44
Front mech: Deore
Rear mech: Deore
Chain: Sram PC971
Saddle: Brooks Champion Flyer B17
Seatpost: Thorn Zoom layback, 400mm, 27.2mm
Racks: Tubus Ergo front, Tubus Cargo rear.