Bespoked Bristol - no. 3 - Technology themes

Quick review of some of the technological themes in the Bespoked Bristol show last weekend.

Retro bikes - there was a good selection of straight retro roadsters directly from our childhoods (judging from the 40+ age group that made up at least half the show visitors):

Here's a beautiful Swallow bike complete with downtube shifters - direct
 from your childhood

Retro Updated - a variant on the retro theme is one where the important components are modern but the package is retro looking:

Here's a beautiful Sword bike with leather bar tape but modern drivetrain

Weird and wonderful - I was expecting lots of examples of the framebuilders "art" on display but the show was much more purposeful than that and there was relatively few unusual bikes:

Relatively few show stoppers

Drivetrain - I thought one unfortunate design that I spotted a couple of times was a wonderfully technical looking crankset which on first glance appeared to be a triple but turned out to be a double:

Is that a triple?  http://www.rotorbike.com/ 

What technological highlights did you spot?