Brompton A Line modification
02-11-22, 05:01 AM
#1
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Brompton A Line modification
Can a Brompton A line internal 3-speed system be replaced by external gear set? Any successful examples please share…
02-11-22, 09:33 AM
#2
Palmer
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I'm guessing you want something more than replacing the three-speed hub with a Brompton factory two-speed derailleur?
Various Asian manufacturers of the Andrew Ritchie design offer factory derailleur geared models. Here's the MIT V8:
Various Asian manufacturers of the Andrew Ritchie design offer factory derailleur geared models. Here's the MIT V8:
06-07-22, 02:13 AM
#4
Newbie
Did you pull the trigger?
This guy got his down to 7.0 kg (15.43 lb), but looks like he started with an ultralight (titanium fork, rear triangle): [Ian Chew is his channel]
Have you pulled the trigger yet? I'm very interested in doing this, to shave possibly 3 lbs off the already light A line (23.1 lbs). YouTuber above says his IGH weighed 1.5 kg - not pounds, kilograms! Or I could be happy with the 23 lbs, which is pretty light already. Maybe not to road bike standards, but my Townie Balloon 7i weighs 37 lbs, so pretty light to me!
The possibility of a sub-20 lb Brompton without springing for a $3K P-line is very appealing to me. Of course, I'll be spending possibly $1K, but it will weigh less than a stock P line. And if I bought a P-line, I'd probably spend another $2K to get to 7-8 kg.
