#10112
phil
Forum Participant

its just a guess but it looks like the two capacitor sections that are removed were held to the shaft with a wire clip. If you ignore the fins you have there basically a half a piece of pipe that will fit over the shaft. I bet a wire clip could then be inserted between the fins and it would go down under the shaft as well as up overtop and clip it in against the shaft.

I have never removed one and I agre you probably have ot look at other AA5’s to try to find the same one or buy a D25 or maybe another crosley, with a broken case to salvage the parts. the knobs on those radios are special to the radio and if lost thee really is no suitable replacement so maybe one without knobs would do as a donor.

Ill keep looking . I have three of the cheratruse ones, but one has no guts. I know I had a red one and the case was cracked..

if another tuning cap had a slightly different shape it would probably not work well as it would change the adjustments for bandspread and allignment.

I remember aligning an old TRF and in it there was a procedure to bend some of the fins. they were cut into segments and bending the fins was how you aligned the different stages which work in conjunction in a TRF. It made me realize that the sections of the tuning cap that were segmented fins were bent for a reason and not to go straightening them unless it was part of an alignment , It also made me realize that the clearances are important to the alignment so if for example one bent some of the outer fins away in a cleaning attempt then it might mess up allignment.

what i started doing is using canned air or compressed air but maybe not at 100 PSI the I spray alcohol between the air nozzle and the part. this sends the alcohol in through the fins with air pressure. You can use water too. atomizing alcohol or any other flamable material needs to be done with the obvious amount of caution as it certainly is a fire hazard biut I think it’s less likely to damage than sticking strips of cloth or paintbrushes in there. a feather is a good tool.

I’d havbe a closer look because if I am right then it might not be so hard to bend a piece of springy wire into a C shape. maybe use a piece of a safety pin or somethign like that with some spring to it.
I thought maybe if you look close between the fins with a flashlight and magnifier.. you might see a little flat or a slot or a scratch or something something down near the bottom of the fins and maybe that would indicate where it might have been? if that’s the case then maybe one could make a hook tool like grind out the edge of a feeler guage so it catches on the clip and that might be a clip removal tool. maybe you could examine another AA5 that you have in pieces to see if that might be the case? if you just need the clip then it might not be worth buying another radio to get a similar tuning cap. Ill check around to see if I might have another radio from the same era to sacrifice that might have a cap.. I dontl know if every maker mae their own but I cant’ see crosley using a bunch of different ones and maybe they were a part crosley bought from some common supplier? I dont think you shoudl give up becauae the parts will surface its just a matter of getting them from a radio that is missing other bits or dropped or something.

I found the clocks interesting . If you take the motor out you will see it is like a can with a shaft and a gear on it but the motor has no wiring… I looked at mine in complete puzzlement until I realized it is, I guess a synchronous motor and it is run by external field windings.. I knew it wasn’t magic exactly but it is an interesting design.. I had a look at one from a columair and that one had like a spring plate with little notches in the circumference of a washer basically and the frequency of the power acts upon these ridges driving it from the 60 cycle power.. its interesting how it could even work.. then my next realization was the little light coming on ahhh but the 60 cycle power is very carefully controlled by the power companies.. the pulses are very accurate and thats why these clocks keep time so well.. they arent’ relying on a mechanical pendulum.. Ive seen them make a lot of grindy noises and still woirk right.

if you look at the copper can of the motor you will find there are bumps inthe copper can. You can carefully drill a hole in one or two of these bumps to get oil in. I washed mune out a few times and then put some sort of lube in there. if you do be careful you dont; stick the dril bit right in and cause damage.. I dont; know whats in there , they are a sealed unit so you’d have to wreck one to see inside. luckily many little clock radios use a similar clock movement. How grindey sounding the motor is might indicate it’s life use. Its something to look for because they can seem quite loud if you use them for a bedside radio.

Phil