[R-390] Mystery solved....sortakinda...

[Gene Beckwith]

Todd,

Interesting post...and a common problem...

Regarding clamp sources...I had a friend machine a couple for a ST. J Blue
Striper....and in this case it was not necessary to disassemble the whole
system...because I made dual clamps...i.e. two halves with two bolts...not
the horse shoe type...

If u have a machinist friend it will be good to make up a few...because it
is only a matter of time, and you will find the need...

Efforts here, as have been posted earlier, have been to advance the rehab
capability by acquiring a lathe...and in the fall a small milling machine.
Great fun, and then no reason not tackle any restoration project...plus u
learn more neat stuff if u've never done machine type work...

Alternatively, check with a company called. W.M. Berg out of East Rockaway,
NY...try 1-800-232-berg for starters....I think they're still in
business...ask for catalog...huge assortment of gears, shafts, clamps and
belting for instrumentation...

Good luck...

Gene

W8KXR

Todd Bigelow - PS wrote:

> G'day -
>
> After reading all of the responses on the MC/KC waltz, I decided to pull
> the Teledyne out of the rack last night for a quick peek. Really had no
> expectations of finding anything too exciting or amazing and NO
> intention of getting into it in any depth.
>
> Sure 'nuff, those "clean" looking gears and cams really had a nice gray
> crud about them. I sprayed some WD-40 into the gear train just to loosen
> things up a bit, not as a long-term solution of course. Well, it did
> work better and the MC knob seemed to stop turning when the KC knob was
> tuned, at least for the most part.
>
> HOWEVER....while tuning to and fro, I noticed something *else*. The two
> slug racks to the right weren't even moving...ever! I could switch
> bands, tune up and down, all to no avail. This also means one of the
> rear racks wasn't moving either, since it apparently keys off one of the
> front racks. Further inspection showed a gear or two, doing absolutely
> nothing. Damned freeloaders!
>
> In a weak attempt to ascertain what was going on, I reached in to spin
> the front most, smaller gear. It flew off the shaft and fell onto the
> front porch. Still more inspection showed....a cracked clamp. a HA! So
> maybe this is why I couldn't make it work anywhere but the broadcast
> band, and then on last checking, not even there.
>
> Now it's time to bite the bullet and do it all the right way. No more
> piecemeal approaches to specific symptoms. Somehow I got distracted with
> the mongrel A and never got back to the 'good' radio, probably because
> the mongrel worked!
>
> At least for now I have some idea where most (if not all) the problems
> with the radio lie. Once I get a clear work area, I'm going to take the
> 'one module at a time' approach and got through the entire radio. Pull a
> unit out, clean, repair, and replace it after completion to be sure I
> haven't made it worse. There's always the mongrel set too, for temporary
> donor parts.
>
> So....who has clamps? Or where? Recalling Scott's advice on his gear
> train restoration, I'm thinking it would be wise to have a few spares on
> hand. Also - any other suggestions on spare items (beyond complete
> modules/chassis) to have on hand? Besides a good bottle of scotch?
>
> There's just no way around it. I'm gonna hafta do it right.
>
> ~ Boomer,  KA1KAQ
>
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