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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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19th Jun 2019, 7:07 pm | #1 |
Nonode
Join Date: Nov 2016
Location: Aberaeron, Ceredigion, Wales, UK.
Posts: 2,887
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B9A valve base size
Just thought I would mention this topic, for all of you that are already aware I apologise.
I just purchased a new valve base (ECC83) for the Blackbox that I’m restoring. I removed the original faulty McMurdo base but could not insert the new one. The Original base has a diameter of about 18mm, the new one about 22mm. So just be aware of this if you intend to do any restoration. There is information on this site giving full details of valve base dimensions which I found rather late in the day. Cheers John PS. I have posted a request in the Wanted Section |
20th Jun 2019, 8:23 pm | #2 |
Heptode
Join Date: Dec 2014
Location: Lincoln, Lincolnshire, UK.
Posts: 583
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Re: B9A valve base size
I have seen a difference in ones I have used, dependant on whether the base is fixed from below or above the chassis (ie the base has smaller diameter at the bottom). I don't repair/ refurbish much to have experience in this for such purposes.
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20th Jun 2019, 9:06 pm | #3 |
Dekatron
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 9,433
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Re: B9A valve base size
Will these do the job, they have plenty in stock.
https://www.langrex.co.uk/products/b...mounting-base/
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Frank |
20th Jun 2019, 10:02 pm | #4 |
Nonode
Join Date: Nov 2016
Location: Aberaeron, Ceredigion, Wales, UK.
Posts: 2,887
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Re: B9A valve base size
Thank you for the link Frank. You have probably read the discussion on the two different sizes, I note that Langres don’t give dimensions but they look right. I’ve been lucky as a Forum member is sending me a suitable one. Thanks again Frank.
Cheers John |
30th Jun 2019, 7:51 pm | #5 |
Nonode
Join Date: Nov 2016
Location: Aberaeron, Ceredigion, Wales, UK.
Posts: 2,887
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Re: B9A valve base size
Valve base received with thanks to Mickm3for.
This thread can be closed. Cheers John |