I was listening to 2 cycling podcasts recently, one involving Geraint Thomas and the other David Miller; whilst not the main podcast topic, both had a dig against the latest bike technology. G had problems with his electronic shifting, presumably whist training at home, and had contacted his mechanic who told him to check the batteries in the shifters. He was a bit WTF (all the charging up etc)! David Miller remarked that bikes previously just had cables and air; now it was fluids and electronics and was just, well, complicated. I was recently riding with a friend who had electronic shifting, tubeless etc; putting his bike away he removed all the batteries ready for charging. I asked what happens if the tubeless business doesn't work; he said he'd call his wife to rescue him. My wife gave me the 'good luck with that one' look. Someone else was raging that, on a gloriously sunny morning, her husband said that a bike ride wasn't on as his DI2 batteries weren't charged; he needed 24 hrs notice.
I'm pretty handy with bike maintenance; of the more recent innovations, hydraulics seems reliable and, apart from new pads, maintenance free, although maintaining cable brakes is dead easy. Tubeless; I get it, but if you keep an eye on tyre wear and invest in decent tyres, then, hopefully, punctures are pretty infrequent. Electronic shifting; is that necessary? Just a trip to the LBS (booked up for weeks) when it goes wrong, wishing you had a simple cable system. I often think to when you're on holiday with your bike; if there's a problem then sorting it yourself (if you've driven and have some tools/spares) means there's no impact so why not keep the bike simple. On a 2 week holiday in France I noticed my rear wheel had a slight buckle caused by a spoke nipple being pulled out through the rim. A LBS couldn't have been more disinterested if they'd tried when I enquired about a replacement wheelset (probably because I was a Brit); fortunately the rim held out although I was considering an emergency Decathlon purchase and sell the bike when I got home. All this considered, I sense the bike industry has other ideas.
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