So I just saw this bike:



Two questions:

1. How does this guy adjust his chain? No horizontal or track dropouts...?

2. Anyone seen this kind of lock before? Is it any good?

Tx

Rad. Looks like it would flop around if someone were trying to break it.

Magic gear ratio.

That bike's what you'd call a "magic gear" (edit: ianjk beat me to it). See here:

https://www.63xc.com/toddp/halflink.htm

Also, here's a link to a site that has some reviews of the Specialized Wedlock:

https://www.roadbikereview.com/cat/ac...5_2501crx.aspx

For what it's worth, a girl I know has one and hates it.

Abus makes a lock like that. I've heard good things, but never actually used one.

I use the ABUS padlock that comes with the quad chain from bikeregistry.com

Very solid stuff.

Ah, I see:

math+trial & error + lotsa changing/adding/removing links and "mutant-half-links" when it gets loose?

Sounds like a pain... or maybe a labor of love The math and trial and error I figured, but I've seen this before and never got what was done about stretching the chain. Now I know! Thanks guys...