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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only.

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Old 10th Aug 2022, 7:03 pm   #1
Vectis68
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Default Bush MB60 tuning dial brass cap

I have a couple of these radios, both with the brass cap missing. Can anybody tell me what the diameter of the brass cap is? I have an idea of what I can use as a replacement, I just need to know the size.

Many thanks,

Phil.
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Old 10th Aug 2022, 8:16 pm   #2
Paul_RK
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Default Re: Bush MB60 tuning dial brass cap

No micrometer to hand, but with a steel rule I make it 2.45cm. The original is as it were straight-sided, ending in a flattened point, rather than smoothly convex as many other knob trims were.

Paul
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Old 11th Aug 2022, 2:08 pm   #3
Goldieoldie
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Default Re: Bush MB60 tuning dial brass cap

Hi Phil
If you manage to source anything suitable please let me know as I have a mb60 with the same trim missing .Must of been duff glue !
Cheers
Pete
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Old 15th Aug 2022, 9:20 pm   #4
Vectis68
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Default Re: Bush MB60 tuning dial brass cap

So I bought a 25mm brass metric cup core plug from Core Plugs International (part number BMC25)

https://coreplugs.co.uk/25mm-brass-cup-core-plug-bmc25

It's a little bit deeper than needed, so I ground it down on a bench grinder and finished it off with a file.

I'm quite pleased with the result, but I don't know how it compares with an original part.

Could I have some feedback please from people who own one of these sets and also have the brass cap.

Phil.
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Old 15th Aug 2022, 10:05 pm   #5
Techman
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Default Re: Bush MB60 tuning dial brass cap

That looks really good!
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Old 15th Aug 2022, 10:10 pm   #6
Paul_RK
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Default Re: Bush MB60 tuning dial brass cap

Looks good to me - I think the shape is quite close to that used on the TR82/97 replica. Here are a couple of photos of the cap on a resident EBM60, which perhaps just about bring out - I didn't find it easy to capture - its gently pointed rather than convex form.

Paul
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