The purple Frame has a drilled and tapped rod fitted into brake bridge, guard is bolted directly to that, and bolted to chainstay bridge too, leather washers. I fitted that mudguard 5 years ago and it hasn't moved or rattled. I got the guards used as a trade with Edscoble and the flashy Herse/Singer reinforcing was to cover a hole he'd drilled for a similar mounting on a smaller frame.
The purple Frame has a drilled and tapped rod fitted into brake bridge, guard is bolted directly to that, and bolted to chainstay bridge too, leather washers. I fitted that mudguard 5 years ago and it hasn't moved or rattled. I got the guards used as a trade with Edscoble and the flashy Herse/Singer reinforcing was to cover a hole he'd drilled for a similar mounting on a smaller frame.
I like bike bothering.