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Old 09-22-2020, 09:52 PM   #13
Brendan1959
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Join Date: Jul 2010
Location: Melbourne Australia
Posts: 95
Default Re: Adjustable Tappets

There is a method that you can use that I have not used on a model A yet, but an old motorcycle mechanic put me on to it when I was restoring a WD matchless G3L350 and have used on lots of KTM off road enduro bikes which are difficult to get at with feeler gauges.
You just need to know what the TPI (threads per inch) of the tappet adjuster has.
For augments sake we will say 28 tpi.
1000 (thou per inch) divided by 28 TPI = 35.7 thou per revolution, divided by the points on the nut 6, is just a whisker under 6 thou per point,
It then becomes simple math to get what you want, then adjust by points or flats of the nut.
Hopefully that makes sense.

Brendan
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