Originally Posted by
blurenciel
When i searched stock folding bikes in online stores they usually weighs 13-14kg. Some even lower like 8kg. What makes the biggest difference between them? Is it the frame or the combination of smaller parts.
Hinges
The reinforcing around the hinges
Design choices, for instance, using a single top tube instead of a conventional double triangle design. The single top tube has to be made more robust to prevent bending and twisting AND additional structure for the folding mechanism.
The frame is generally the big item, but the longer seat post and stem don't help.
It's engineering compromise.
Folding makes for a heavier frame.
You can have a lighter frame if you pay (a LOT) more.
Smaller fold with smaller tires.
Smaller tires sacrifices ride quality
Increase ride quality by suspension and/or bigger tires
Suspension and/or bigger tires sacrifices fold size and weight increases
Weight isn't really a big deal unless you're picking it up all of the time or are a top tier racer.
And if you're a top tier racer.... then why the hell are you on a folder?!
(rant mode off)