The rear chainstay required much finessing to enable the chain to run freeing, but also to accommodate my 'crooked' right foot.
The inside of the chainstay was cut out and a curved tapered metal piece of sheet steel was brazed into the cavity. That was then filed smooth and sanded. That enabled the chain not to rub on the insides of the greatly oversized right chainstay.
The 'dimple' you see on the left, was a recess in the chainstay, to allow my heel not to hit on every pedal stroke. Similarly, a concave recess was cut and filed into the chainstay and another piece of sheet metal was inserted, cut, filed and sanded.
The overall shaping of that one chainstay alone took a full day in the shop.
Of course rust, a bit of paint bubbling and wear make it look a bit rough, but almost thirty years ago, it looked seamless.
More on the Flying T Square
The rear chainstay required much finessing to enable the chain to run freeing, but also to accommodate my 'crooked' right foot.
The inside of the chainstay was cut out and a curved tapered metal piece of sheet steel was brazed into the cavity. That was then filed smooth and sanded. That enabled the chain not to rub on the insides of the greatly oversized right chainstay.
The 'dimple' you see on the left, was a recess in the chainstay, to allow my heel not to hit on every pedal stroke. Similarly, a concave recess was cut and filed into the chainstay and another piece of sheet metal was inserted, cut, filed and sanded.
The overall shaping of that one chainstay alone took a full day in the shop.
Of course rust, a bit of paint bubbling and wear make it look a bit rough, but almost thirty years ago, it looked seamless.