02-18-2021, 10:33 PM
So this more of a what not to do on a 16-121 chassis.
Replaced the tires on the dial drive. Two of them were made from neoprene parts. The tire behind the dial was the most difficult. My next door is a plumber and I told him about my dilemma. He came up with this for me. https://www.fernco.com/dimensional-drawi...56/1056-22 Was made from made of neoprene. Cut off a slice about 5/16 wide and it fit great on the back of the dial. Only one problem too thick GRRRRR. Made a jig to mount it and spin it to sand it down about an 8th or 3/16 of an inch. Was a trial and error process. Shifts from low to high dandy.
Next adventure was cleaning up the top of the chassis and the tuning cap. Removed the cap took apart the trimmers and give it a wash in mineral spirits then a spray of tuner cleaner. Added new wires. Removed IF cans to clean and replace wires. No broken ceramic this time. Clean rf coil covers. Put it all back together new rubbers under the cap. BC alignment went fine along with bands 2/3. 4 and 5 were a problem SURPRISE!!!! Trimmer all the way in dial was about a mc out. After fussing with it for a few hours I found the problem. It was not a good problem but is guess that's it's called a problem!
Time for the JD weld...
After this misadventure it's ready to go short of the speaker. Did replace the shadow meter and rewire that stuff..,. Pics later.
Replaced the tires on the dial drive. Two of them were made from neoprene parts. The tire behind the dial was the most difficult. My next door is a plumber and I told him about my dilemma. He came up with this for me. https://www.fernco.com/dimensional-drawi...56/1056-22 Was made from made of neoprene. Cut off a slice about 5/16 wide and it fit great on the back of the dial. Only one problem too thick GRRRRR. Made a jig to mount it and spin it to sand it down about an 8th or 3/16 of an inch. Was a trial and error process. Shifts from low to high dandy.
Next adventure was cleaning up the top of the chassis and the tuning cap. Removed the cap took apart the trimmers and give it a wash in mineral spirits then a spray of tuner cleaner. Added new wires. Removed IF cans to clean and replace wires. No broken ceramic this time. Clean rf coil covers. Put it all back together new rubbers under the cap. BC alignment went fine along with bands 2/3. 4 and 5 were a problem SURPRISE!!!! Trimmer all the way in dial was about a mc out. After fussing with it for a few hours I found the problem. It was not a good problem but is guess that's it's called a problem!
Time for the JD weld...
After this misadventure it's ready to go short of the speaker. Did replace the shadow meter and rewire that stuff..,. Pics later.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
