The encoder plus attached PC board is attached to the Front Panel with a lock washer and 1/2" hex nut on the encoder shaft. The diameter of the hole on my Front Panel was 10 mm as measured with my calipers. The diameter of the threaded mount on the encoder is ~ 9 mm while the diameter of the ring at the base of the threaded mount is ~ 10 mm. How is the encoder correctly mounted by hardware to the inside face of the Front Panel?
I tried 3 methods without success. 1) First was to just add the washer and nut to the shaft and try and tighten it down with a wrench, but the encoder kept tilting. 2) So, I thought perhaps the inner diameter of the hole in the Front Panel was too narrow because of paint thickness. I scrapped off the paint from the inside of the hole and a bit of aluminum, then the 10 mm ring at the base of the encoder shaft fit in the hole nicely. I could then barely tighten down the shaft with the nut and washer because this ring at the base of the encoder is slightly thicker than the thickness of the front pannel. When I put on the large knob, 2 felt washers were not thick enough to provide resistance to knob turning, so I thought I made a mistake in enlarging the hole. However, the position of the PC board on the back of the encoder was close enough to the Front Panel to allow the attachment of the Control board to the 1/2' posts attached to the back of the Front Panel Board. 3) To solve the felt thickness problem, I put a very thin (0.2-0.3 mm) washer, ~9mm ID, on the threaded shaft of the encoder before inserting it into the hole in the Front Panel to stabilize the tilting problem. I attached the washer and nut to the threaded shaft and now the double felt washers work as described to provide friction against the inner surface of the large knob. However, now the PC board on the back of the encoder extends too far away from the the back of the Front Panel Board to allow attachment of the Control Board to the two posts. So, how to solve this problem? Thanks, Ted Salmon WD4CAV -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
