Hi Gareth

?

I’m a bit puzzled at your gear size.? Even a 12 pitch gear of 30 teeth is not as big as your saying yours is.? Are you sure it 3.63 OD that’s a hug gear for a tumbler gear.?? Dennis

?

?

Hi Dennis, I hadn't had a chance to get to the shop for a while but I got some measurements the tumbler gears are 0.5" thick 3.63" OD, 0.65" bore and 30 teeth. still in the process of stripping paint and painting but reassembly is not to far off, I'm sure I will notice some other things along the way