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Sets, Parts and Service Information Wanted (private buyers only, no swaps) If you need help obtaining components, sets or equipment, post a message here. Private buyers only - no traders. No swaps.

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Old 23rd Jul 2021, 12:30 pm   #1
Norman Raeburn
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Default Rogers Ravensbourne Stereo Amplifier parts

Hi Folks, I am looking for four silver knob trims for the small knobs or knobs complete. I could also do with the wooden sleeve if anyone has a scrapper. The amplifier is a skip find and works. I have attached a picture to show the size of trim required, they are slightly concave. If you can help please let me know costs etc, Norman
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Old 24th Jul 2021, 9:40 am   #2
Edward Huggins
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

These may be difficult to source. However, you can make them from silver/aluminium kitchen foil, a good scalpel and a coin as a template. Fix with Evostik or similar. Smooth on. You will be surprised how good they will look.
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Old 24th Jul 2021, 10:37 am   #3
Norman Raeburn
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

Hi Folks, I am describing these trims as concave, that may be wrong. I always get concave and convex mixed up. They are slightly higher towards the centre of the knob.
I used to have a small packet of trims which might have been from RS but I canít find them. I would be obliged if anyone can help. Many thanks, Norman
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Old 24th Jul 2021, 11:58 am   #4
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

3M 425 DWB ( https://www.3m.co.uk/3M/en_GB/p/d/b40067910/ ) ally tape is great stuff for this sort of job. It's waterproof, sticks like the proverbial and it's also good for sealing leaky sunroofs and mending (bodging) plastic windows, sealing leaky downspouts, electric kettles etc etc.


Keep an eye open for deals on Ebay- it's NOT cheap!
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Old 24th Jul 2021, 5:58 pm   #5
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

I always used to mix up convex and concave until I hit on the fact that concave was like a cave - hollowed out. HTH
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Old 24th Jul 2021, 6:19 pm   #6
Norman Raeburn
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

Hi Edward, Thanks for the suggestion, I will give it a try and see how I get on.
Graham, I will try and remember that one. Many thanks, Norman
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Old 24th Jul 2021, 6:49 pm   #7
JonSnell
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

RS have a nice supply of aluminium spun knobs; https://uk.rs-online.com/web/c/?sear...nium+spun+knob
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Old 24th Jul 2021, 7:15 pm   #8
Norman Raeburn
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

Thanks for the link, I actually have plenty of knobs, the problem being the push buttons on this are brown. Totally silver knobs wonít look right. Norman
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Old 24th Jul 2021, 8:04 pm   #9
Radio Wrangler
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

If you get desperate enough to want to turn some brights from aluminium bar, you can use my lathe. Just make a full set to get them to match.

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Old 24th Jul 2021, 8:52 pm   #10
Norman Raeburn
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

Hi David, Thanks for the kind offer, I havenít used a lathe for over 50 years and wouldnít have a clue where to start. This amplifier belongs to a friend so i am trying to do the best i can. He isnít too worried about the cosmetics, itís me thatís trying to improve the looks. All the best, Norman
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Old 24th Jul 2021, 9:29 pm   #11
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

Quote:
Originally Posted by Norman Raeburn View Post
Thanks for the link, I actually have plenty of knobs, the problem being the push buttons on this are brown. Totally silver knobs wonít look right. Norman
Interestingly the Ravensbourne didn't always have the same knobs. Mine is like the one in the attached borrowed image so spun aluminium might look ok.

Alan
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Old 25th Jul 2021, 9:36 am   #12
Norman Raeburn
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Default Re: Rogers Ravensbourne Stereo Amplifier parts

Hi Alan, Thanks for the information, I didn’t realise they came with different knobs. I will have another look in the knob box and see if I can find something suitable.
I guess this thread can be closed now, many thanks to all who responded and checked their knob collections, Norman
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