Oil Pump

[Laverdalothar]

solution is then as Bob said: rev it more! 

 

[sfcpiet]

Of course, Ernsto.

Got to remember not to let my arse do the thinking....

But there are definitely different pinions floating around, so only the tooth shape was altered, ratio must remain the same.

piet

 

[Paul Marx]

I confirm that the early bikes had much coarser teeth; I have in fact seen some broken, however, the diameter of the gears remains identical as therefore the drive ratio.
Ciao
Paul

 

[Ernesto]

Hello,

finally found the photo I once made of the 2 different gears.
On the left is the "standard" one with 29 teeth, requires oil pump drive gear with 58 teeth.
On the right is the early one (e.g. 750S) with 22 teeth, requires drive gear with 44 teeth.

Ernesto