Nordmende Fidelio 57 Dial cord - UK Vintage Radio Repair and Restoration Discussion Forum

RussellSher · 18th Apr 2014, 4:36 pm

Hi all - I have a Nordmende Fidelio 57 with a dial cord which slips in one direction. It may just be a case of old-age. I'm not sure what would normally prevent the slipping - see the first picture. I did try shifting it along to adjust tension (probably not a good idea, I know).
Also what is the item in the next picture? It this to diffuse the dial illumination? Why is it also strung? The stringing was broken - It came out as shown. Does it perhaps play a role in relieving tension when tuning?
73
Russell

ValvoStef · 18th Apr 2014, 4:50 pm

Hi Russell,

The item on the right picture is indeed a diffuser. The reason why it is strung is probably to keep it under tension so it stays flat and doesn't interfere with the tuning pointers. It is independent from the tuning strings.

Regarding the dial cord, some sets have a spring linked in to keep it under tension. Sometimes it helps to clean the wheels with solvent cleaner to prevent it from slipping.

Radio_Dave · 18th Apr 2014, 5:03 pm

Tuning capacitor spindles normally have around 3 turns of drive cord around them to give the right amount of friction.

David

Paul Mathew · 18th Apr 2014, 5:12 pm

Hi Russell,
Moral of the story: "when you're highly strung, you need something to relieve the tension!"
Regards,
Paul

RussellSher · 18th Apr 2014, 9:08 pm

Thanks all -
Very Good Paul -
Russell

John_BS · 18th Apr 2014, 9:35 pm

I recently bought some violin-bow rosin and applied it to a (new) synthetic drive-cord to increase the friction.

John

18th Apr 2014, 4:36 pm	#1
RussellSher Tetrode Join Date: Sep 2009 Location: Cape Town, South Africa. Posts: 98	Nordmende Fidelio 57 Dial cord Hi all - I have a Nordmende Fidelio 57 with a dial cord which slips in one direction. It may just be a case of old-age. I'm not sure what would normally prevent the slipping - see the first picture. I did try shifting it along to adjust tension (probably not a good idea, I know). Also what is the item in the next picture? It this to diffuse the dial illumination? Why is it also strung? The stringing was broken - It came out as shown. Does it perhaps play a role in relieving tension when tuning? 73 Russell Attached Thumbnails

18th Apr 2014, 4:50 pm	#2
ValvoStef Hexode Join Date: Mar 2014 Location: Fareham, Hampshire, UK. Posts: 482	Re: Nordmende Fidelio 57 Dial cord Hi Russell, The item on the right picture is indeed a diffuser. The reason why it is strung is probably to keep it under tension so it stays flat and doesn't interfere with the tuning pointers. It is independent from the tuning strings. Regarding the dial cord, some sets have a spring linked in to keep it under tension. Sometimes it helps to clean the wheels with solvent cleaner to prevent it from slipping. __________________ Failing to prepare is preparing to fail ... Last edited by ValvoStef; 18th Apr 2014 at 4:56 pm. Reason: Add on text

18th Apr 2014, 5:03 pm	#3
Radio_Dave Nonode Join Date: Jun 2004 Location: Norwich, Norfolk, UK. Posts: 2,543	Re: Nordmende Fidelio 57 Dial cord Tuning capacitor spindles normally have around 3 turns of drive cord around them to give the right amount of friction. David __________________ http://www.youtube.com/ My Nixie Clocks

18th Apr 2014, 5:12 pm	#4
Paul Mathew Pentode Join Date: Jan 2014 Location: Cape Town, South Africa Posts: 214	Re: Nordmende Fidelio 57 Dial cord Hi Russell, Moral of the story: "when you're highly strung, you need something to relieve the tension!" Regards, Paul

18th Apr 2014, 9:08 pm	#5
RussellSher Tetrode Join Date: Sep 2009 Location: Cape Town, South Africa. Posts: 98	Re: Nordmende Fidelio 57 Dial cord Thanks all - Very Good Paul - Russell

18th Apr 2014, 9:35 pm	#6
John_BS Octode Join Date: Dec 2008 Location: Wincanton, Somerset, UK. Posts: 1,784	Re: Nordmende Fidelio 57 Dial cord I recently bought some violin-bow rosin and applied it to a (new) synthetic drive-cord to increase the friction. John