It seems that Dahon has a new version of the Launch hinge. Instead of the serrated engagement teeth that extends all the way to the exterior of the hinge, it is now smooth teeth and is hidden inside.<br /><br /><img src="https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1563/untitled_1_jpga_fca308f5d1d718e3bfd3d2f3db0414f3ccdfa460.jpg"></img><br /><br /><a href="https://youtu.be/9w23adDuEmM">https://youtu.be/9w23adDuEmM</a>
https:// youtu .be/ 9w23adDuEmM
<br /><br /><a href="https://youtu.be/ibLo7sYruow">https://youtu.be/ibLo7sYruow</a>
https:// youtu .be/ ibLo7sYruow
<br /><br /><a href="https://www.dahon.com.hk/products/dahon-archer-pro-folding-bike-kba005-black-20-jaws-hinge">https://www.dahon.com.hk/products/dahon-archer-pro-folding-bike-kba005-black-20-jaws-hinge</a><br /><br /><a href="https://www.dahon.com.hk/products/dahon-launch-d8-8%E9%80%9F%E7%A2%9F%E5%89%8E%E6%8A%98%E7%96%8A%E8%BB%8A-kba083-8spd%E6%9A%B4%E9%BE%8D%E6%8E%A5%E9%A0%AD">https://www.dahon.com.hk/products/dahon-launch-d8-8%E9%80%9F%E7%A2%9F%E5%89%8E%E6%8A%98%E7%96%8A%E8%BB%8A-kba083-8spd%E6%9A%B4%E9%BE%8D%E6%8E%A5%E9%A0%AD</a><br /><br />There are 2 models, one is called Launch D8 KBA083, and another one is Archer Pro KBA005.<br />There are other Launch models that don't have the "jaws hinge".