Rev counter

[BSA500]

Stumbled across a forum post on here from God knows when that stated the A65 rev counter/oil pump drives clock wise so A65 clocks would need converting but they are a dam sight cheaper than the chronos. A black face rev counter can be had for £60 that's 3:1 ratio.

[BSA500]

Does anyone know if the RSM3003 black faced tachos used on later A65 can be used as is on the drive from the oil pump drive from our pre units??

[berger]

our pre units are 3 to 1 anti clock from the oil pump drive

[Bsareg]

If the A65 clock is magnetic ( cable entry in centre of the case) then I wouldn't think it could be converted (rotation) without changing the entire mech as the needle is move by proximity to a magnet spinning on the end of the cable axis.

[berger]

yes correct bsareg and the magnetics internals get changed from 2to1 or 4 to1 to 3to1 anti clock like i have had done on betsy donkys years ago and betsy two last month , gaggs did betsy 1's and the nice chap at timeless motorcycles did betsy 2's