KB ER30 Knobs/Shaft Couplers - UK Vintage Radio Repair and Restoration Discussion Forum

BrianAllen · 20th Jan 2021, 8:21 pm

Until I can source the original knobs, does anybody have any ideas as to what I can use as shaft couplers, so that I can put the chassis back in the cabinet and still operate the radio controls?

Thank you.

P.S. I have received some very useful information regarding making up knobs etc but until I set myself up again I need a short term "fix".

snowman_al · 20th Jan 2021, 9:33 pm

6mm or 1/4 inch bore plastic pipe as used in fish tanks etc.?
Warmed and slid on the shafts. Tywrap if you need more purchase and put a nail through the exposed end to operate the switches.
Alternatively try aluminium tube with the correct inside diameter and 'split' the coupling end with a hacksaw and then tywrap to give a grip.
You could still buy shaft couplings, there was something on here a while ago.

Edit: Ebay and Hifi Collective have 1/4 inch shaft couplers available.

BrianAllen · 20th Jan 2021, 9:59 pm

Great thank you very much; that should keep me going until I source the correct knobs.

crackle · 21st Jan 2021, 6:04 pm

Is that old radio working OK now. Wicks used to do brass and aluminium tube. I have also see it in B&Q.
Mike

BrianAllen · 21st Jan 2021, 8:28 pm

Hi Mike, yes all up and running thank you, just a bit of a hum but could be the 25uf electrolytic of which I am about to replace; all remaining paper/wax caps have now been replaced.

The HR10 working well, only needed to replace the dial cord which I broke.

Brian

20th Jan 2021, 8:21 pm	#1
BrianAllen Heptode Join Date: Nov 2018 Location: Staffordshire Moorlands, UK. Posts: 595	KB ER30 Knobs/Shaft Couplers Until I can source the original knobs, does anybody have any ideas as to what I can use as shaft couplers, so that I can put the chassis back in the cabinet and still operate the radio controls? Thank you. P.S. I have received some very useful information regarding making up knobs etc but until I set myself up again I need a short term "fix".

20th Jan 2021, 9:33 pm	#2
snowman_al Octode Join Date: Dec 2018 Location: Llandeilo, West Wales, UK. Posts: 1,092	Re: KB ER30 Knobs/Shaft Couplers 6mm or 1/4 inch bore plastic pipe as used in fish tanks etc.? Warmed and slid on the shafts. Tywrap if you need more purchase and put a nail through the exposed end to operate the switches. Alternatively try aluminium tube with the correct inside diameter and 'split' the coupling end with a hacksaw and then tywrap to give a grip. You could still buy shaft couplings, there was something on here a while ago. Edit: Ebay and Hifi Collective have 1/4 inch shaft couplers available. __________________ Never Leave Well Enough Alone... Last edited by snowman_al; 20th Jan 2021 at 9:43 pm. Reason: Edit

20th Jan 2021, 9:59 pm	#3
BrianAllen Heptode Join Date: Nov 2018 Location: Staffordshire Moorlands, UK. Posts: 595	Re: KB ER30 Knobs/Shaft Couplers Great thank you very much; that should keep me going until I source the correct knobs.

21st Jan 2021, 6:04 pm	#4
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: KB ER30 Knobs/Shaft Couplers Is that old radio working OK now. Wicks used to do brass and aluminium tube. I have also see it in B&Q. Mike

21st Jan 2021, 8:28 pm	#5
BrianAllen Heptode Join Date: Nov 2018 Location: Staffordshire Moorlands, UK. Posts: 595	Re: KB ER30 Knobs/Shaft Couplers Hi Mike, yes all up and running thank you, just a bit of a hum but could be the 25uf electrolytic of which I am about to replace; all remaining paper/wax caps have now been replaced. The HR10 working well, only needed to replace the dial cord which I broke. Brian