Just a comment on the APP connectors and roll pins. There are many ways to solve the problem, some good and some not so good. Everyone that's used them long enough will probably have tackled the disappearing roll pin dilemma at one time or another.
Glueing them tends not to work because most glues don't like shear force after being applied, and that's what happens when you slide the two halves of the connector back together after putting the glue on them. Super glue is really succeptible to this because it sets so fast. Other types of glue have been used with varying degrees of success, mostly poor. My solution was to clamp the connector halves in a vise, run a 4-40 tap through the hole and then use a 4-40 x 1/4" setscrew screwed into the hole to keep them from coming apart. You can also use a miniscule drop of blue "Loc-Tite" on the threads of the setscrew to sort of lock it in place -- haven't had one come apart since I started doing this. If you decide to try it, make sure you snug the connector in the vise, but not so tight that you deform it. Carefully run the tap in and out of the hole. Put the 4-40 x 1/4" setscrew into the hole before you remove the connector from the vise. Check to make sure the APP will still mate with another one and hasn't spread from the pressure if the setscrew. If it has, remove the screw, reclamp it and run the tap back & forth several times to cut the threads deeper. I've found this method works best with a new, sharp tap. Not all APP's are created equal, and some of the plastic material seems to be harder than others. Probably depends on what plastic mix was used when they were formed at the factory. Jim Sheldon, W0EB _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
