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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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24th Nov 2007, 1:30 pm | #1 |
Dekatron
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 3,233
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Small Defiant set
I have come across a small bakelite Defiant set dating from the late 40s at a guess. I haven't been able to take the back off properly, but from what I can see it is very tightly packed inside and has what looks suspiciously like asbestos to shield the case above the dropper resistor.
I am wondering:- 1. Will the set be worth the effort of restoration 2. How do I dispose of the asbestos 3. On the basis that it will be used, do I need anything to replace the asbestos and if so what 4. Shall I just leave it in the garage where I found it. Any thoughts will be welcomed. Paul |
24th Nov 2007, 2:01 pm | #2 |
Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,843
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Re: Small Defiant set
Hi Paul,
White asbestos like this isn't too nasty if you're sensible. If it's not flakey, just leave it in place and leave it well alone. If it's at all crumbly, make it wet with a plant sprayer, then remove it and put it in a sealed polythene bag, which you can hand in at your local rubbish dump (but a lot of people would just stick it in the bin, or put it in a dark, safe corner and forget about it. You see a lot of white asbestos dumped on builder's skips without any precautions). Work outside, and wipe up any crumbs with a damp cloth, which you can then put in the same bag. I've heard a ceramic wall tile makes a good substitute. Nick. |
24th Nov 2007, 2:11 pm | #3 |
Dekatron
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 3,233
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Re: Small Defiant set
Thanks Nick
I might have a go with it then. The asbestos is fluffy so the wetting solution will probably be needed. The tile is an excellent idea for a replacement - I would never have thought of that. I might give it a go as an antidote to massive HMV sets! Paul |
24th Nov 2007, 2:15 pm | #4 |
Dekatron
Join Date: Sep 2003
Location: Bolton, Greater Manchester, UK.
Posts: 6,644
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Re: Small Defiant set
Every set is worth restoring.
Don't let a little asbestos put you off. Do the following: Outside: Dismantle the set, take the asbestos away, bag it like Nick said, and you can either... 1) Take it to the local waste disposal place. 2) Throw it in your General Unrecyclable Wheelie Bin. 3) Throw it in somebody else's G.U. Wheelie Bin and run... Clean the case and Chassis thouroughly. Now, take it in and carry on as per a standard restoration. Nick's tip for a replacement is a good one. Or you could try a capacitive dropper. Cheers, Steve P.
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24th Nov 2007, 3:02 pm | #5 |
Dekatron
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 3,233
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Re: Small Defiant set
Yep - I am convinced.
The owner is the same as the one who has the two HMV radiograms. He restores classic cars and is currently doing some work on my Rover P4. He seems to have an inexhaustable supply of old sets in his garage plus a box of old valves which I haven't explored yet. He showed me this one when I was there on Friday. I am going to have a go with his HMV 531 after Christmas so whether I do this one in the meantime will depend on whether I can convince SWMBO! I have no idea of the model number and so I will post a photograph on here for identification if I should decide to take it on. It will definately be one for before and after photographs as the case is absolutely filthy but appears to be in good condition under the grime. Paul |
11th Jan 2008, 8:10 pm | #6 |
Dekatron
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 3,233
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Re: Small Defiant set
I have progressed a little further with this set. It is loosely based on a Champion Meteor, but has different valves in different places (I did say loosely!).
The line cord resistor has been replaced by a large wire wound resistor in the case at some stage, but this has burnt out. This isnt really surprising as the combined heater voltage is only 70 v leading to the dropper dissipating 50w. The ceramic resistor I have temporarily put in place to test the set starts to glow nicely after a while - I think a capacitative dropper is definately needed here! The chassis turns out to be aluminium and has come up very nicely following a thorough cleaning. I have replaced the wax caps and loads of wiring that had perished due to the heat and am at the stage where I can get stations if I touch the grid of V1. Hopefully this initially very unpromising set will live again! Paul |