Pps found out that the rear cog of the trike is actually part of the axle so no easy fix. To actually open the Abingdon Works diff, you need to completely remove the axle from the bike then twist the two halves (via seat stays) to open it up then a new sprocket needs to be braised on. Meh, don't have the energy energy to fix this at the moment. But can't just scrap an 85 year old bike.
Pps found out that the rear cog of the trike is actually part of the axle so no easy fix. To actually open the Abingdon Works diff, you need to completely remove the axle from the bike then twist the two halves (via seat stays) to open it up then a new sprocket needs to be braised on. Meh, don't have the energy energy to fix this at the moment. But can't just scrap an 85 year old bike.