Custom Oak Cycles 650B French Randonneur Project.

The forces will be running down the length of the nails, and the only forces in question are the forces generated by Edscoble's left hand while braking. Unless Mr. Scoble has superpowers, and can pull nails apart with his bare hands, I'd say they're well within spec.

There's a slight sideways force because the cable comes around the seatpost.
Also, brakes are levered. I've bent a few cheap regular hangers (see my bad photo – The cable was around the other side until yesterday.) Possibly down to something else, but worth raising nonetheless.

Back to the thread though.