I have it set up for vbrakes. I have them on my good recumbent and you nearbout need seatbelts when you shut down hard, I was impressed when I installed them.
Elmo
Elmo
I googled Martin Power Transmission, they show them in two styles.I am waiting on a 30t sprocket to set up my jackshaft. Very hard to find a 30t for #41 chain. Good luck on your build.
Elmo
Browning, now a part of Emersom Power Transmossion.When I tried to order they were out of stock at Martin and it a couple of other places.
Elmo