Spheros 18000FB 4.6:1 Speed Change?

[Matt H]

Hi Folks,

Wondering if it's possible to increase the speed of an older Spheros 18000FB with a different pinion gear?  Perhaps from a newer model or Saragosa or something?  Or just wishful thinking?

Thanks for your thoughts,
M

[boon]

Looking at the surrounding bearings, the pinion and drive gear from a Saragosa 14000 of the same era might fit, and would get you 4.9:1 as far as I know. Probably not worth doing.