23-12-2021, 09:57 PM
Is there an easy way of checking a four speed 2SYN box to check that its ratios are definitely standard?
It has no 'S' marks, but it's a box which was sparkly clean, came with a nicely shortened lever, and whilst its not on a car so I cant do the wheel revolutions thing, it would be nice to determine if it's ever had anything changed internally. There is a good diagram in the PWA7C book for the 3 speed cogs, but I cant find one for the 4...
It has no 'S' marks, but it's a box which was sparkly clean, came with a nicely shortened lever, and whilst its not on a car so I cant do the wheel revolutions thing, it would be nice to determine if it's ever had anything changed internally. There is a good diagram in the PWA7C book for the 3 speed cogs, but I cant find one for the 4...