Stanley fitted with Stewart Warner Speedo

Peter Turvey writes:
Trial setup of Stewart Warner speedometer drive bought last year for the Stanley, need to save up for correct speedometer and drive cable next. Dr T keeps reminding me that its very easy to exceed the village speed limits!

MIKKEL POSSELT 
Nice! -
does anybody know the original number of teeth on the drive and driven gears on a 1919 735 with van sicklen speedometer? - I am collecting parts so I can reconstruct the speedometerdrive on my my 735A