From the International Tern BYB web page: "
Whereas most other folding bikes weld a simple tube to a plate, the TFL Joint features precision-machined inserts at the tube junction, ensuring more consistent welding and more material at the most highly stressed areas."
Translation: "
When we started out building folding bikes we had to engineer around some patents held in my dad's name and we hired some designers who had never built a bicycle before and the design they came up with simply welded a cut-off tube to the hinge body and it turns out that wasn't strong enough and some frames broke and riders were injured and at first we blamed it on misuse by the owners and then we blamed it on an 'out of specification' supplier and then we shut down our forum and clammed up and wouldn't say anything to anybody for the longest time and we went from industry golden boy to absolutely destroying our reputation but we've learned our lesson and now we over engineer and overbuild and our bikes are kinda heavy and kinda expensive but they're heck for stout."
Last edited by tcs; 05-30-19 at 07:27 AM.