Not sure if anyone is interested, but thought I'd share our experience with a GT Quadrafoil Tandem. We purchased second hand, even though it had weird 700D wheels (with a broken spoke or two). Seemed ok, though felt we should put 700C wheels on instead (more tyre choice etc, also 700D were only 36 Spokers). So, we asked David http://www.dcrwheels.co.uk/
to make some up for us, with Zenith 40 spoke hubs, Sapin strong spokes and Rigida Sputnik rims, changed gears from 21 to 24 speed and brakes (added Tektro R559 55 - 73mm calipers)
So now feels smoother, have more choice in tyres, more gears too, the wheels are superb, wonder if anyone else has converted theirs?
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