Skip to main content
000798 000801 000804 000807 000810 000813 000816 000819 000822 000825 000828 000831 000834 000837 000840 000843 000846 000849 000852 000855 000858 000861 000864 000867 000870 000873 000876 000879 000882 000883
English French German Italian Spanish

16 H 15 tooth magdynamo drive sprocket

Forums

My sprocket, when fitted on the inlet shaft to drive the magdyno, doesn't seem to come out far enough to give a straight run to the mag sprocket for the chain. Should it have a spacer or washer behind it to align it better?

Thanks

Permalink

Is the sprocket on the mag itself seated ? Remember it is on tapered shaft and difficult to remove once set home .

Permalink

Hi Gary,

   Have you got the correct mag mounting platform for your engine ? There are 3 or 4 different off-sets, so you might  have the wrong one on yours.

Permalink

Which year is your engine ? With the change to flat lever followers in 1938 and then later circular tappets in '48, the 'overhang' on the plates extended each time. This means that an earlier plate on a later engine will have the effect you describe...the other way round results in the magdyno contacting the rear of the timing chest.

How close are the countersunk screw holes underneath the plate to the face that slots between the engine plates ? A photo would help.

Permalink

Just to clarify the captions on Dan's post....On the left are for the the 1948 pattern engine. Centre (given as wartime16H) is actually for all OHV / SV 1936 - 37 and WD16H...and those on the right are for the 1938 enclosed valve engines.

Permalink

sorry guys just looked closely at Dan's pic and I guess I have a 1948 one. Mine is a 1936 model 

Permalink

Yep, been there, done that -  As Dan says, we all have !

For a 1937 engine, you require the plate where the mounting face bisects the screw countersinks. I haven't had to do it, but it would seem logical that the rear face could be milled and a spacer used on the front edge...but it may make the platform more difficult to keep tight and they can be a little problematical if there is any wear on the engine plates.

This photograph shows to variations of the early type alongside a 1938 pattern. Apologies for the poor quality phone picture.Platforms

 

Norton Owners Club Website by White-Hot Design

Privacy Policy