two searches will yield different results, so try them both
Swiv-O-Matic Mount Cast Vs. Machined
it comes to hardware Rogers has some of the most devout followers.
Not just any Rogers hardware, but the Swivo hardware from
the 60's. For some reason it is a love/hate* relationship
with this hardware.
the Swivo hardware first came out the parts were made in a
machine shop and the Collet Nose was machined (photos below).
This made it almost indestructible if treated correctly. Some
time in the late 60's (Most experts say around 1969) the parts
were changed to a cast version. This of course made them slightly
inferior to their machined brethren, but still good hardware
none the less.
below you will see the two different versions and the slight
variations are noted. I'm sure there are transition versions
that might have different washer combination's.
Note: Many people overtightened the collet nose which is why
people had problems with the Swivo hardware. It is also been
reported that the mounting holes are slightly different between
the different eras.
Version --Machined Version
different Collet Nose's
are the two complete Rogers tom mounts below. They also changed
the mounting hardware from standard flat washers to the star