Replacement Drive Cord Pulley Wheels - UK Vintage Radio Repair and Restoration Discussion Forum

Orthicon · 4th May 2013, 8:38 pm

Hi,
does anyone know where to obtain substitute replacement drive cord pulley wheels.
Unfortunately this afternoon, whilst tuning my Pye P75, the dial drive kept slipping. Upon closer inspection, it turned out to be one of the dial cord pulley wheels, which had literally begun to disintegrate.
I suspect this is in large part due to it being situated right next to one of the dial bulbs.
The plastic that it was made from had gone extemely brittle and 'crumbly', I suspect from a combination of age and heat.

Ian.

Ed_Dinning · 4th May 2013, 8:54 pm

Hi Ian, if you have access to a lathe they can be easily turned up.
Failing that an ad in the wanted section (with a pic) should enable one to be found in the collective spares boxes.

Ed

Herald1360 · 6th May 2013, 6:43 pm

Maybe a short tube or a few small washers with larger diameter washers either side all soldered together?

Perhaps a dead cassette deck (audio or video) might yield some likely pulleys?

And maybe........

http://www.youtube.com/watch?v=e5DUvlhhjEI

Cobaltblue · 6th May 2013, 7:05 pm

Hi Ian

What diameter are these?

I have some small brass pulleys from a scrap Cossor 522

Any good?

Cheers

Mike T

Orthicon · 7th May 2013, 5:35 pm

Hi Mike,
it's just over 11mm in diameter. Brass would be good, as it would not age in the same way as plastic does - from the heat off the dial bulb.

regards
Ian.

Cobaltblue · 7th May 2013, 8:04 pm

Hi Ian

PM me with you contact details and I will pop them in the post to you.

Cheers

Mike T

Orthicon · 7th May 2013, 9:10 pm

-Thanks Mike, PM on it's way to you.

Ian

Boom · 10th May 2013, 1:26 pm

I have a scrap DAC90/A or two around here if the pulleys are likely to be similar you'd be welcome to them.

Orthicon · 11th May 2013, 9:45 pm

-Got the pulley wheels from Mike this morning, but thanks Ed for the offer.

Thanks Mike - the pulley wheel just needed enlarging of the central bore, so it would fit on the pulley wheel shaft, which is 2BA in size. The radio tuning mechanism now works perfectly, if anything even smoother. And of course being of brass they should last for many years to come.

Ian.

Cobaltblue · 11th May 2013, 9:55 pm

Hi Ian that's good news.

Glad to hear they arrived safely.

Cheers

Mike T

4th May 2013, 8:38 pm	#1
Orthicon Retired Dormant Member Join Date: Aug 2011 Location: Cambridge, UK. Posts: 97	Replacement Drive Cord Pulley Wheels Hi, does anyone know where to obtain substitute replacement drive cord pulley wheels. Unfortunately this afternoon, whilst tuning my Pye P75, the dial drive kept slipping. Upon closer inspection, it turned out to be one of the dial cord pulley wheels, which had literally begun to disintegrate. I suspect this is in large part due to it being situated right next to one of the dial bulbs. The plastic that it was made from had gone extemely brittle and 'crumbly', I suspect from a combination of age and heat. Ian.

4th May 2013, 8:54 pm	#2
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,195	Re: Replacement Drive Cord Pulley Wheels Hi Ian, if you have access to a lathe they can be easily turned up. Failing that an ad in the wanted section (with a pic) should enable one to be found in the collective spares boxes. Ed

6th May 2013, 6:43 pm	#3
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: Replacement Drive Cord Pulley Wheels Maybe a short tube or a few small washers with larger diameter washers either side all soldered together? Perhaps a dead cassette deck (audio or video) might yield some likely pulleys? And maybe........ http://www.youtube.com/watch?v=e5DUvlhhjEI __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O Last edited by Herald1360; 6th May 2013 at 6:53 pm.

6th May 2013, 7:05 pm	#4
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,878	Re: Replacement Drive Cord Pulley Wheels Hi Ian What diameter are these? I have some small brass pulleys from a scrap Cossor 522 Any good? Cheers Mike T Attached Thumbnails __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk

7th May 2013, 5:35 pm	#5
Orthicon Retired Dormant Member Join Date: Aug 2011 Location: Cambridge, UK. Posts: 97	Re: Replacement Drive Cord Pulley Wheels Hi Mike, it's just over 11mm in diameter. Brass would be good, as it would not age in the same way as plastic does - from the heat off the dial bulb. regards Ian.

7th May 2013, 8:04 pm	#6
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,878	Re: Replacement Drive Cord Pulley Wheels Hi Ian PM me with you contact details and I will pop them in the post to you. Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk

7th May 2013, 9:10 pm	#7
Orthicon Retired Dormant Member Join Date: Aug 2011 Location: Cambridge, UK. Posts: 97	Re: Replacement Drive Cord Pulley Wheels -Thanks Mike, PM on it's way to you. Ian

10th May 2013, 1:26 pm	#8
Boom Retired Dormant Member Join Date: Jan 2007 Location: Westbury, Wiltshire, UK. Posts: 2,451	Re: Replacement Drive Cord Pulley Wheels I have a scrap DAC90/A or two around here if the pulleys are likely to be similar you'd be welcome to them.

11th May 2013, 9:45 pm	#9
Orthicon Retired Dormant Member Join Date: Aug 2011 Location: Cambridge, UK. Posts: 97	Re: Replacement Drive Cord Pulley Wheels -Got the pulley wheels from Mike this morning, but thanks Ed for the offer. Thanks Mike - the pulley wheel just needed enlarging of the central bore, so it would fit on the pulley wheel shaft, which is 2BA in size. The radio tuning mechanism now works perfectly, if anything even smoother. And of course being of brass they should last for many years to come. Ian.

11th May 2013, 9:55 pm	#10
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,878	Re: Replacement Drive Cord Pulley Wheels Hi Ian that's good news. Glad to hear they arrived safely. Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk