What old cycling technology don't you ever want to see again?

[classic33]

Shimano had a 14 speed rear cassette back in 1999.

 

[Kajjal]

Rim brakes

 

[Deleted member 1258]

Rim brakes

I've never ridden anything else.

 

[Blue Hills]

I've never ridden anything else.

I did venture into hydraulic rim brakes for a while but have now withdrawn from those.
Good old cables - mostly linked to Vs.

 

[matticus]

I've never ridden anything else.

Have you tried these new "Bowden cables"? Not sure I trust them, but rods are getting scarcer, post-bre*it ...

 

[Trickedem]

Bottom bracket dynamos ..I had a sanyo one that would aquaplane on the tyre under the breath of moisture in the atmosphere, even chose to coat it with a band of Emery cloth which did sort of stop it on my nighttime commute ,but still cr*p as the wear on the tread was horrendous

I had one of those, but not for long. Worst possible place for a bit of electrical equipment. I think mine lasted about 6 months.