Originally Posted by Duragrouch

Interesting. Maybe this is why Dahon has not expanded that hinge/jaw design to other models. Squeaking at the joint: You might want to ask Dahon if a light, clean lube like silicone spray would be OK at the joint jaws, or if no, because they rely on friction there.

I still perceive the Launch jaw to be more durable than their other standard pinned hinges, as more surface area and on both sides of the joint. But I could be wrong.

I can't see why the cable would tighten when riding, except if the aluminum frame warms up (sun?) and expands lengthwise, as steel (cable) has lower coefficient of thermal expansion. Maybe the frame hinge needs a separating "assist" mechanism. Oh, I do see a small spring. But it's only on one side, I think it may need on both. They should design the clamp lever like a desmodromic valve; pushes up when clamping, pulls down when unclamping.

Bums me that when debuted, the Launch pictures indicated a braze-on for a front derailleur, but later models seem to lack that.

Right now, a Launch D8 sells for only USD $50 more than a Mariner D8. I pined for a Launch for the disc brakes, but now would probably get an Origami Bull at half the price.