On 4/6/2021 12:34 AM, wrote:

I have 10 speed Shimano 7970 Di2 on a bike. Bought it early 2010. I only put a thousand or so miles on it each year. But it has never given me any trouble at all. I charge the battery every 2-3 years for fun since it has never died on me. It just works. I have lots of cable shifting bikes too. They all work too. I must be an oddball extremist. All my bikes just work without any problems. Sure wish I could be a normal person with unending bike problems to worry about every day of the week.

I think you need to snap up a bunch of random bike frames whenever you
see a "good buy." Then buy a bunch of oddball components, being careful
not to do any measuring or research beforehand. Try to assemble the
results into bikes you can sell for profit. It will make your life and
your posts here so much more interesting!

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- Frank Krygowski