I’m struggling to understand one of the current component trends among manufacturers of electronic components.
Historically - and we’re talking the past ~50 years or so - we could find parts to keep an old bike functional. It may not have been peak quality, but it could be made to work. For example, if today you own, say, a road bike from the mid-1990’s with a Shimano 8-speed drivetrain and you wore out a cassette or broke a shifter, there is a suitable replacement being made by Shimano. It’s a very basic version of the original part, but it will function and you can ride the bike.
So far, this isn’t happening with electronic parts, which is concerning. If you bought a Di2 road bike in 2009 and a shifter, derailleur, or Di2 wire from that era fails, you might have to buy a whole new grouppo. There is no “compatible downgrade” being made for that system.
I really don’t know what to tell customers when they ask about replacing a 10-speed Di2 derailleur. 20 years ago, I could find a shifter for their mid-80’s Specialized Mtb (and I still can today, actually). I can surf eBay for Di2 parts and hope for the best, but that supply will inevitably die off.
This isn’t just a Shimano problem. I have 2 bikes built with Sram 11-speed E-tap. It’s outstanding stuff. But if I need to replace a front derailleur on one of those bikes, I’m hosed. There is no replacement available. I can maybe find one used, but they’re selling for over $600 in the used market, which begs the question: Why doesn’t Sram want that money?
I don’t even see this as a long-term issue. Given that both Sram and Shimano seem to be phasing out mechanical systems, this will become a big problem for cyclists everywhere very soon.
So, with all of this in mind, I’m curious what everyone’s thoughts are. What have you all experienced with maintainability and replaceability? Does anyone know of an industry manufacturer working on functional replacement parts for older systems? Are we headed for a situation with Di2 parts and wires that resembles catalytic converter thefts? What can we look forward to?