Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

90 dial drive mechanism repair
#1

The 90 that I'm working on has a very sloppy dial drive mechanism; the shaft has a little slot worn in it, and the matching hole in its bracket is worn, too. I have some ideas from old posts on the ARF, but I thoght that I would ask here.

Tim KA3JRT
#2

I fixed it; I found an old hollow tuning shaft (to use as a bushing) in my assorted junk (probably a shaft from one of those late 40s Zenith sets), which had a quarter-inch I.D. I slid it over the tuning shaft, and carefully centered the shaft over the original hole. I used a fine-point Sharpie marker to draw a circle around the new bushing, and reamed/filed the bracket to the diameter of the bushing. I then pressed it into place and soldered it, trimming the new bushing to about one-quarter inch or so. The dial was then reassembled, and the mechanism was oiled. It now works perfectly, and should be good for another 74 years.

Tim KA3JRT
#3

Hey Tim, don't leave us in suspense....

Could you add some pictures please? Icon_smile




Users browsing this thread:
[-]
Recent Posts
1949 Motorola 5A9M
hello mr Fixr, for sure !! I have some radios that I need to make some batteries for too. Sincerely richardradiorich — 12:33 AM
1949 Motorola 5A9M
Dittos, sweet b on the battery. Love the "9 Lives" logo, remembered from my childhood. Other neat ones are t...MrFixr55 — 11:24 PM
Philco 46-1209 strange behavior
Hi Morzh, Dunno if the AC EMI caps are an issue. I never liked the concept but never had an issue with these causin...MrFixr55 — 11:21 PM
Philco 46-1209 strange behavior
And no hum without the 7AF7? Not common but I am thinking heater - cathode short. This would introduce hum in this sta...MrFixr55 — 11:14 PM
schematics
Those filter caps in the cardboard tube are easy to restuff, especially the kind with the rolled over end. You don't hav...Arran — 09:56 PM
Philco Model 16 wiring question
If you have 5 wires, do this: The wires that go to thick-wire wound winding are the filament. If you do not know wha...morzh — 09:03 PM
Philco Model 16 wiring question
I recently acquired a Philco Model 16 Code 126. I removed the power transformer to place heat shrink on some very bad...bobclausen — 08:23 PM
1949 Motorola 5A9M
Hello Bob, That battery looks great nice job ! Sincerely Richardradiorich — 08:20 PM
1949 Motorola 5A9M
Yes, I plan to put a Velcro closer on the top.klondike98 — 07:28 PM
1949 Motorola 5A9M
Nice job on the battery, Bob. Can the box be opened to replace the 9 volters?RodB — 11:32 AM

[-]
Who's Online
There are currently no members online.

>