Billybob,
Nice bit of research. However, for any of the circuits I¡¯ve seen for CTC
panels, you always want break before make types. Next is ?¡± shaft vs 6mm
shaft is less than a 1/64¡± difference, so most knobs will not notice the
difference (if they are 1/4¡± designs), the set screws can deal with that.
As for flats on the shafts or keyed mounting hardware, I¡¯ve found most MR
types seem to be rather heavy handed!! So having mounting hardware that will
prevent twisting the switch itself is important. The flat on the shaft is
critical to keep the knob in the right place, but this is easy after
installation with a couple of passes of a file on the shaft if it wasn¡¯t
equipped in the first place.
Note: We¡¯d need to check about the knobs themselves to see if they are round
or if they have an internal flat to match. That would be important to know.
-Ken Cameron, Member JMRI Dev Team
www.jmri.org
www.fingerlakeslivesteamers.org
www.cnymod.com
www.syracusemodelrr.org
[Non-text portions of this message have been removed]
Ken Cameron