Originally Posted by
Frog Man
It is common for front derailleurs to have 16t to 22t capacity.
Why not more?
Suppose I wanted a 34-70t double chainring?
Could a front derailleur with a long cage be used to get more than 22t capacity?
An extra chain tensioner to increase capacity.
Where would I find someone that knows the answer?
Not a framebuilder question. I mean, some FBs might have opinions on that, but I'd rather not water down this forum with bike-mechainic questions. Try the general forum, you'll get more eyes on it there.
Mark B