Originally Posted by
Fentuz
As others said, a lot of the stability comes with the joint locking mechanism and the number of joints.
on brompton, that u shape clamp is limited by the fitting tolerance and the wear and tear.
As you asked about dahon, its mechanism can be tweaked to increase the clamping making it more rigid. There are also several handlepost design. The TT or the jetststream are stabler than the telescopic version.
I wasn't aware that Dahon had different handlepost designs. I don't know much about the TT or Jetstream. How would the handlepost design of, say, a Dahon MU D10 or D11 compare? I'm using the MU D series as an example because it seems to be in the middle range somewhere in terms of price and quality.