Originally Posted by
markizschnitzel
I took a few photos.
This is the frame hinge from the inside:
Dahon Mariner D8 2024 frame hinge
An odd thing happened: while taking the photo, I randomly turned the screw, and the hinge is now seemingly.. Fine? I don't get it. Twice I turned the screw all the way one way, then tightened it in small increments, and at every point, the hinge had a gap when latch was clamped.
Now all of a sudden it works..
But also, just for future reference, posting images on how Deltec on this model is attached. I found these attachments odd from the very beginning, as the attachments points themselves are obviously weakest points.
So this is Dahon Mariner D8, but I have Shimano gears and derailleur, and my seat is sports seat and not the one usually depicted, and the tyres are not what is usually listed, and there is Deltec on this one, and the hinge is as you say newer. I have not been able to find this exact configurations anywhere. And I'm sure bikeshop swapped some parts. It might have been a returned bike or something, but they did not disclose this.
That hinge is nothing like their other hinges. The toggle linkage must be in the latch handle outside of photo view, I'd like to see that if you can take a pic of the handle. But basically, same concept, the latch goes "over center" when closing, peak force then slightly less as the handle goes against the frame. Unless not, unless they designed it so constantly increasing pressure, with a secondary latch to hold it closed. The latter might be better, as the over-center latches, to be tight, are then difficult to pull the lever to open, I pry mine open with plastic tent stake with a chisel point, easier than injuring my fingertips trying to pull the latch open by the small tab on the old style latch.
Notice: Nothing holding that latch adjustment bolt in place, that means it can move slowly over time. With the spring there, no room for a locking nut.
The New Jaws hinge seems to be an improvement, but haven't used one yet. Dahon USA showed specs for their Launch D8s in stock as having New Jaws hinge, which is wrong, they are the old original Jaws hinge. Just looked at their website, they still have that wrong, spec says new, bike shows old.