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Posted

what is written on the crown wheel & pinion

 

or count the teeth

 

crown wheel x pinion

 

33 x 8 = 4.125

35 x 9 = 3.89

40 x 9 = 4.44

39 x 11 = 3.54

37 x 9 = 4.11

39 x 10 = 3.9

34 x 9 = 3.7

looks a bit rusty are the bearings ok :wink:

Posted

the teeth on the gears are "case hardened" .. which means just the surface is hardend, if the whole lot was hardend it would be too brittle.

 

the case hardening makes the surface very hard so that it dosnt wear

Posted
what is written on the crown wheel & pinion

 

or count the teeth

 

crown wheel x pinion

 

33 x 8 = 4.125

35 x 9 = 3.89

40 x 9 = 4.44

39 x 11 = 3.54

37 x 9 = 4.11

39 x 10 = 3.9

34 x 9 = 3.7

looks a bit rusty are the bearings ok :wink:

 

 

Surely the x symbols need to be divide??

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