Regentone U22 Drive cord - UK Vintage Radio Repair and Restoration Discussion Forum

Blue Suede Ted · 4th Nov 2017, 8:59 pm

I have a " Trader" service sheet for this set which shows drive cord details for a single drive cord. However this set has a cord from tuning spindle to drive drum, and another cord from the drive drum to drive the cursor over the scale. Has anyone got the details of the 2 cord system please. Hope someone can help. Peter.

Boater Sam · 4th Nov 2017, 9:41 pm

So, to be clear, there are 2 grooves on the tuning spindle?
I can find no other U22 details other than trader sheet 855.

There is a thread in the archive of Vintage Radio and TV forum.

http://www.forum.radios-tv.co.uk/vie...php?f=3&t=5360

which seems to imply that it originally was only one cord and how to string it as such.

ukcol · 4th Nov 2017, 9:43 pm

Not sure which Trader sheet you are looking at but Trader sheet 855 shows the drum and the pointer both driven from a single length of cord.

EDIT: Post crossed with Sam's.

Blue Suede Ted · 4th Nov 2017, 9:53 pm

Yes it is Trader sheet 855.

Only one groove on tuning spindle. Peter.

Boater Sam · 4th Nov 2017, 9:57 pm

Yes, Peter, but if it has 2 cords, there must be 2 grooves in the tuning spindle, you cannot put 2 cords into 1 groove.
If the layout is as the thread I gave you on the other forum, then it should be possible to lace it as 1 cord.

ms660 · 4th Nov 2017, 10:07 pm

Cord> spindle to drum.

Another cord> drum to cursor.

As I understand it.

Lawrence.

Blue Suede Ted · 4th Nov 2017, 10:20 pm

yes, both cords on drum, which only has 1 groove.

ms660 · 4th Nov 2017, 10:39 pm

Looking at the picture on radiomuseum the cursor cord appears to be crossed above the tuning drum:

https://www.radiomuseum.org/r/regentone_u22u_2.html

Lawrence.

crackle · 4th Nov 2017, 11:51 pm

Only one length of cord, tied into a loop at the spring which attaches to the tuning capacitor drum. It is explained in the notes.
The diagram seems very clear to me.

Mike

Blue Suede Ted · 5th Nov 2017, 7:04 pm

Another difference is that the single cord system has two pulleys at the top right and 2 cord system has one pulley at top right. Peter.

Boater Sam · 5th Nov 2017, 7:53 pm

How many springs are there Peter?
If the drives are separate using the drum as the common part, there must be a way of tensioning them both.
With only one spindle groove, the drum edge must be wide enough and able to carry both cords side by side.
Could the single top right pulley carry 2 cords? They would have to turn it in the same direction.

Blue Suede Ted · 8th Dec 2017, 6:43 pm

Got it sorted. Thanks for the help and tips. Peter

Boater Sam · 9th Dec 2017, 9:06 am

Good, Peter please do tell how, how many cords? was the diagram correct?
Sam.

4th Nov 2017, 8:59 pm	#1
Blue Suede Ted Tetrode Join Date: Apr 2015 Location: Suffolk, UK. Posts: 81	Regentone U22 Drive cord I have a " Trader" service sheet for this set which shows drive cord details for a single drive cord. However this set has a cord from tuning spindle to drive drum, and another cord from the drive drum to drive the cursor over the scale. Has anyone got the details of the 2 cord system please. Hope someone can help. Peter.

4th Nov 2017, 9:41 pm	#2
Boater Sam Banned Join Date: Dec 2013 Location: Middlewich, Cheshire, UK. & Winter in the Philippines. Posts: 3,897	Re: Regentone U22 Drive cord So, to be clear, there are 2 grooves on the tuning spindle? I can find no other U22 details other than trader sheet 855. There is a thread in the archive of Vintage Radio and TV forum. http://www.forum.radios-tv.co.uk/vie...php?f=3&t=5360 which seems to imply that it originally was only one cord and how to string it as such. Last edited by Boater Sam; 4th Nov 2017 at 9:46 pm. Reason: added

4th Nov 2017, 9:43 pm	#3
ukcol Rest in Peace Join Date: May 2003 Location: Harlaxton, Lincolnshire, UK. Posts: 3,944	Re: Regentone U22 Drive cord Not sure which Trader sheet you are looking at but Trader sheet 855 shows the drum and the pointer both driven from a single length of cord. EDIT: Post crossed with Sam's.

4th Nov 2017, 9:53 pm	#4
Blue Suede Ted Tetrode Join Date: Apr 2015 Location: Suffolk, UK. Posts: 81	Re: Regentone U22 Drive cord Yes it is Trader sheet 855. Only one groove on tuning spindle. Peter.

4th Nov 2017, 9:57 pm	#5
Boater Sam Banned Join Date: Dec 2013 Location: Middlewich, Cheshire, UK. & Winter in the Philippines. Posts: 3,897	Re: Regentone U22 Drive cord Yes, Peter, but if it has 2 cords, there must be 2 grooves in the tuning spindle, you cannot put 2 cords into 1 groove. If the layout is as the thread I gave you on the other forum, then it should be possible to lace it as 1 cord.

4th Nov 2017, 10:07 pm	#6
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Regentone U22 Drive cord Cord> spindle to drum. Another cord> drum to cursor. As I understand it. Lawrence.

4th Nov 2017, 10:20 pm	#7
Blue Suede Ted Tetrode Join Date: Apr 2015 Location: Suffolk, UK. Posts: 81	Re: Regentone U22 Drive cord yes, both cords on drum, which only has 1 groove. Attached Thumbnails

4th Nov 2017, 10:39 pm	#8
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Regentone U22 Drive cord Looking at the picture on radiomuseum the cursor cord appears to be crossed above the tuning drum: https://www.radiomuseum.org/r/regentone_u22u_2.html Lawrence.

4th Nov 2017, 11:51 pm	#9
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: Regentone U22 Drive cord Only one length of cord, tied into a loop at the spring which attaches to the tuning capacitor drum. It is explained in the notes. The diagram seems very clear to me. Mike

5th Nov 2017, 7:04 pm	#10
Blue Suede Ted Tetrode Join Date: Apr 2015 Location: Suffolk, UK. Posts: 81	Re: Regentone U22 Drive cord Another difference is that the single cord system has two pulleys at the top right and 2 cord system has one pulley at top right. Peter.

5th Nov 2017, 7:53 pm	#11
Boater Sam Banned Join Date: Dec 2013 Location: Middlewich, Cheshire, UK. & Winter in the Philippines. Posts: 3,897	Re: Regentone U22 Drive cord How many springs are there Peter? If the drives are separate using the drum as the common part, there must be a way of tensioning them both. With only one spindle groove, the drum edge must be wide enough and able to carry both cords side by side. Could the single top right pulley carry 2 cords? They would have to turn it in the same direction.

8th Dec 2017, 6:43 pm	#12
Blue Suede Ted Tetrode Join Date: Apr 2015 Location: Suffolk, UK. Posts: 81	Re: Regentone U22 Drive cord Got it sorted. Thanks for the help and tips. Peter

9th Dec 2017, 9:06 am	#13
Boater Sam Banned Join Date: Dec 2013 Location: Middlewich, Cheshire, UK. & Winter in the Philippines. Posts: 3,897	Re: Regentone U22 Drive cord Good, Peter please do tell how, how many cords? was the diagram correct? Sam.