Spica TA protrusion length

[Joe Martin Cantrell <agiyo@domain.elided>]

Someone asked how far various Spica thermostatic actuators should protrude 
at room temp and heated up; I didn't see a response.

Consulting Wes Ingram's book, there's a table showing the factory specs, 
that TAs up to '77 should be 19mm cold, 27mm at 175F degrees.  Later TAs 
should be 22.5 cold, 29mm at 175F.

But NOTE:  Wes says that table's obsolete.

His recommendation in the actual Spica tuning section is that the 
protrusion be at least 25mm at 175F.  If you have that, you should be able 
to adjust the all-important end gap to .019" or less, by turning the screw 
under the TA.

Do NOT do as so many uninformed wrenches have, move the reference screw 
with the lock nut on the back end of the pump.  Arthur Anderson methods of 
changing the points of reference do not fool a Spica pump.

Cheers,
Joe
--
to be removed from alfa, see /bin/digest-subs.cgi
or email "unsubscribe alfa" to majordomo@domain.elided