I'm still marvelling at the levels of thought, time and money that went into the design of the Halfords GTi Drive bikes. How many engineers & CAD ‘aces’ did it take to produce this flawed and functionally inept system?
A friend asked if could sort his front mech out as he was struggling to engage granny-ring whilst riding. Easy, says I, couldn’t be much more than a quick cage alignment & limit screw ‘fettle’!
How ‘enlightened’ I was that, under load of the rider, the ‘dynamic’ rotating BB (never seen anything like that since my days on the steam railway) arc, combined with the location (the only location) of front mech, actually resulted with tensioning the cable so much that it changed to middle ring on it’s own (after a perfect un-loaded set up I might add).
I must have spent 30 mins trying to establish if I’d ‘missed the point’, or had performed an uber fudge up but no! Sit on the thing, and the front mech changes – brilliant!
I’m clearly in the wrong job. Umm, let’s think...how about marketing a fish for ruck-sac?
Yeh I never had any problem with the 3 i-drives I had plus two of my mates were sweet shifters too. 
