I've done a factory tour a couple of times. Apparently they're made in Russia. As is a lot of Ti stuff. But then you have whole towns in Russia where the life expectancy is 10 years below national average (which is already quite low compared to Europe) due to the metalworks.
I shouldn't imagine its impossible to get someone in Russia or China to make you a custom Ti mainframe. Just send them yours to copy.
This guy (Len Rubin) built one over 10 years ago: https://ufbusa.ishopserver.com/
Unfortunately his old website appears to be down.
Brompton bought a share in a British titanium factory a couple of years ago and will probably be setting up for in house ti manufacturing. Just a matter of time now
Given it took +50yrs for them to add a little clip to lock the rear pivot and 20 odd to put brake levers that didn't look like they came from a kinder egg...
... I'm gunna say it's going to be a very long matter of time.
I've done a factory tour a couple of times. Apparently they're made in Russia. As is a lot of Ti stuff. But then you have whole towns in Russia where the life expectancy is 10 years below national average (which is already quite low compared to Europe) due to the metalworks.
I shouldn't imagine its impossible to get someone in Russia or China to make you a custom Ti mainframe. Just send them yours to copy.
This guy (Len Rubin) built one over 10 years ago:
https://ufbusa.ishopserver.com/
Unfortunately his old website appears to be down.