Author Topic: 84 y.o. Pilot restoration  (Read 733 times)

Offline Des Miles

84 y.o. Pilot restoration
« on: August 19, 2018, 08:34:57 PM »
Bought this radio at auction in 1980. Didn,t have time to inspect it before the auction and once I had it realized it was going to be a pita to restore. So put it on shelf where it's been for the last 10 years. I was 60 at the time, so now, at 70 thought if I don't do it now, won't be around in another 10 years!!
As can be seen it's been through the mill, the speaker baffle board  and grill cloth was replaced at some time.



When I removed the chassis it can be seen that at some time it was also a mouse house!



The chassis was also badly corroded (mouse wee?) Under the chassis looked untouched, wiring for dial lights was brittle and had to be replaced .







The most difficult part was to remove the valves from their bases. The valves are of the 6-pin U6A type. As can be seen, there are flanges around the valve holder which holds the the valve screening can. This flange covers a large portion of the vale base making it impossible to remove the valve just using your fingers. To make matters worse, all the glass envelopes of the valves were loose from their bases. Came up with a plan to use a hose clamp to remove the valves.







Another big problem was that the speaker field coil was open circuit. At first I thought I would have to replace with a permanent magnet speaker, but then decided to disassemble the speaker and check the field coil, not prepared to spend R1000-00 to have the coil rewound for a R400-00 radio. The radio Gods were with me!! After removing the insulation, managed to find where the coil had arced to earth and burned off and I could repair it. Images below show the field coil, black coil next to hum-bucking coil and after I repaired it.





Finally replaced all wax capacitors and some wiring.





After replacing the valves and their screens, slowly applied mains via variac while monitoring HT and filament voltages. HT settled at 250V and the set burst into live, singing again after all those years! Tuned into LM Radio on 702kHz, no problem. Made a new baffle board and attached speaker with new grill cloth to complete.









 





Offline Family_Dog

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Re: 84 y.o. Pilot restoration
« Reply #1 on: August 19, 2018, 09:07:46 PM »
Nice one Des, I have a RCA Cathedral type radio that does still work but does need a re-cap and probably some re-wiring too, the old wires tend to become brittle as they age.

Just need to get my A into Gear!


-F_D



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That Guy in South Africa...
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Offline marantz123

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Re: 84 y.o. Pilot restoration
« Reply #2 on: August 19, 2018, 11:44:44 PM »
Wonderful work ! Restored for the generations to come...hopefully they still get analogue radio & can appreciate this. :thumbs:

Offline vleisman

Re: 84 y.o. Pilot restoration
« Reply #3 on: August 20, 2018, 08:41:41 AM »
Beautiful.  :thumbs:

Offline charles

Re: 84 y.o. Pilot restoration
« Reply #4 on: August 20, 2018, 05:38:14 PM »
Congratulations, well done.

This is a real professional restoration of an antique radio. 

Offline Des Miles

Re: 84 y.o. Pilot restoration
« Reply #5 on: August 20, 2018, 07:56:57 PM »
^^^^^^
Thanks guys, (Charles), I always try to the best of my ability to keep it as original as possible.

Offline CAD

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Re: 84 y.o. Pilot restoration
« Reply #6 on: August 21, 2018, 06:34:24 AM »
Wow and well done ,very cool restoration  :thumbs:

Thanks for sharing and posting pics 
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Offline Gramophone

Re: 84 y.o. Pilot restoration
« Reply #7 on: August 21, 2018, 06:43:55 AM »
Brilliantly done. The restored unit is looking real good and something to be proud of :2thumbs:
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Offline VinayDookhi

Re: 84 y.o. Pilot restoration
« Reply #8 on: August 21, 2018, 04:45:46 PM »
magic stuff...

Offline mahleu

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Re: 84 y.o. Pilot restoration
« Reply #9 on: August 21, 2018, 04:59:04 PM »
Nice, I bought a similar shape Philco the other day. Turns out it had been gutted and had modern junk inside. I've stripped it out and now I need to find some internals...
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Offline Steerpike

Re: 84 y.o. Pilot restoration
« Reply #10 on: August 22, 2018, 01:02:34 AM »
Turns out it had been gutted and had modern junk inside.

That is so nasty - I hate seeing that, and it happens too often.

Offline RyanC

Re: 84 y.o. Pilot restoration
« Reply #11 on: August 23, 2018, 03:55:11 PM »
Good job! :thumbs:

Offline LAV

Re: 84 y.o. Pilot restoration
« Reply #12 on: August 23, 2018, 08:20:49 PM »
Thanks for sharing! Love it. Well done.
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Offline Skylark

Re: 84 y.o. Pilot restoration
« Reply #13 on: August 23, 2018, 10:40:16 PM »
Beautiful, I love it when ancient gear comes back to life, just as functional as the day it was made all those years ago.
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Offline Razr

Re: 84 y.o. Pilot restoration
« Reply #14 on: August 27, 2018, 10:38:56 PM »
Really good Restoration

That looks so old school and awesome

Didn't know that am had any stations nowadays