Depth Gauge Micrometer for Valve Regulation
By D. L. Bullock
I don't think I understand how one can use a caliper or sliding digital
micrometer for regulating valves. I have both of those and have found
many uses for them but this is not one of them.
What Duaine was looking for is called a depth gauge micrometer. It is
a round dial (anchor on the back) with a stem sticking out the bottom.
Moving that stem up and down is what registers on the dial in thousandths
of an inch. I use it with a block or a device to hold it up in the air
above the valves. I regulate the valves by blowing up the pouch and
measuring how much the valve actually travels. It is also used on a
machinists lathe to see if something is turned true.
I think if Duaine's cheapo from Harbor freight has a light enough spring
return, it should work just fine for years and years of player rebuilds.
A more expensive one should not be necessary until el cheapo wears out.
D.L. Bullock St. Louis
(Message sent Wed 19 Jan 2005, 07:12:44 GMT, from time zone GMT-0600.)