Re: Wingshaft clearances

Posted by jim mason on November 23, 1997 at 08:34:55

In Reply to: Wingshaft clearances
posted by Bob Carabbio on November 22, 1997 at 18:48:23

on a similar topic: anybody know the length and weight of the arm used to test shocks as shown in the feb. 1931 service bulletins?it shows 38secs in summer and 2minutes 21 seconds in winter for full rotation (23degrees) of the shock wingshaft.(it also shows 15.5 secs. and 58 secs for summer/winter in another figure.i assume these are with the shock adjusted for driving and the first numbers are with the needle valve seated).
What I've never seen in shock absorber writings is a statement of the necessary diametric clearance between the wingshaft ends, and the housing bore, and the wing dams and the center diameter of the wingshaft hub.
: also the clearance between the top/bottom surfaces, and the wings with the inner cap screwed down.It appears that these would have to be quite small to meet the leakage specs in the service bulletins.
: The truth is out there somewhere -

: Bob Carabbio




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