Instead of a ring slip clutch in a 2 part supply spool centre it uses a
solid one with a sprung arm assembly in the base. Instead of a pivoted
curved arc it has 2 smooth corners that engage, one or both, with the inside
surface of the spool centre. This arm is covered in a composite material of
felt with a rubbery covering that has now gooey perished. As the arm is
eccentric, the braking action is normal enough in REW sense but grabs on in
FF or Play or REC direction.

Can anyone think of a source of material that would be a suitable
replacement ?
Presumably felt as squashy and the rubber as friction material. Rubber on
own would be too rigid and felt on own would wear out.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

On May 16, 7:13*am, "N_Cook" wrote:
Instead of a ring slip clutch in a 2 part supply *spool centre it
uses a
solid one with a sprung arm assembly in the base. Instead of a
pivoted
curved arc it has 2 smooth corners that engage, one or both, with
the inside
surface of the spool centre. This arm is covered in a composite
material of
felt with a rubbery covering that has now gooey perished. As the
arm is
eccentric, the braking action is normal enough in REW sense but
grabs on in
FF or Play or REC direction.

Can anyone think of a source of material that would be a suitable
replacement ?
Presumably felt as squashy and the rubber as friction material.
Rubber on
own would be too rigid and felt on own would wear out.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

I had a similar problem with a Sony open reel deck. In that case is
was a stainless steel band with the composite which had decayed. I
replaced the composite with a strip of leather, in my case taken from
a worn out wallet. Works great. I glued the leather to the steel with
contact cement.

GG

wrote in message
...
On May 16, 7:13 am, "N_Cook" wrote:
Instead of a ring slip clutch in a 2 part supply spool centre it
uses a
solid one with a sprung arm assembly in the base. Instead of a
pivoted
curved arc it has 2 smooth corners that engage, one or both, with
the inside
surface of the spool centre. This arm is covered in a composite
material of
felt with a rubbery covering that has now gooey perished. As the
arm is
eccentric, the braking action is normal enough in REW sense but
grabs on in
FF or Play or REC direction.

Can anyone think of a source of material that would be a suitable
replacement ?
Presumably felt as squashy and the rubber as friction material.
Rubber on
own would be too rigid and felt on own would wear out.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

I had a similar problem with a Sony open reel deck. In that case is
was a stainless steel band with the composite which had decayed. I
replaced the composite with a strip of leather, in my case taken from
a worn out wallet. Works great. I glued the leather to the steel with
contact cement.

GG

I tried some silicone rubber sleeving thinking that the hollow structure
would give squashiness and the rubber for the friction but it was too thick
and grabbing-on/stalling, rather than braking in the forwards rotation
sense.
Leather sounds a reasonable structural equivalent, will give that a go.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

"N_Cook" wrote in message
...
wrote in message
...
On May 16, 7:13 am, "N_Cook" wrote:
Instead of a ring slip clutch in a 2 part supply spool centre it
uses a
solid one with a sprung arm assembly in the base. Instead of a
pivoted
curved arc it has 2 smooth corners that engage, one or both, with
the inside
surface of the spool centre. This arm is covered in a composite
material of
felt with a rubbery covering that has now gooey perished. As the
arm is
eccentric, the braking action is normal enough in REW sense but
grabs on in
FF or Play or REC direction.

Can anyone think of a source of material that would be a suitable
replacement ?
Presumably felt as squashy and the rubber as friction material.
Rubber on
own would be too rigid and felt on own would wear out.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

I had a similar problem with a Sony open reel deck. In that case is
was a stainless steel band with the composite which had decayed. I
replaced the composite with a strip of leather, in my case taken from
a worn out wallet. Works great. I glued the leather to the steel with
contact cement.

GG

I tried some silicone rubber sleeving thinking that the hollow structure
would give squashiness and the rubber for the friction but it was too
thick
and grabbing-on/stalling, rather than braking in the forwards rotation
sense.
Leather sounds a reasonable structural equivalent, will give that a go.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/


What about felt and then wipe some silicon rubber sealer into the surface ?

Arfa

Arfa Daily wrote:
"N_Cook" wrote in message
...
wrote in message
...
On May 16, 7:13 am, "N_Cook" wrote:
Instead of a ring slip clutch in a 2 part supply spool centre it
uses a
solid one with a sprung arm assembly in the base. Instead of a
pivoted
curved arc it has 2 smooth corners that engage, one or both, with
the inside
surface of the spool centre. This arm is covered in a composite
material of
felt with a rubbery covering that has now gooey perished. As the
arm is
eccentric, the braking action is normal enough in REW sense but
grabs on in
FF or Play or REC direction.

Can anyone think of a source of material that would be a suitable
replacement ?
Presumably felt as squashy and the rubber as friction material.
Rubber on
own would be too rigid and felt on own would wear out.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
onhttp://home.graffiti.net/diverse:graffiti.net/

I had a similar problem with a Sony open reel deck. In that case is
was a stainless steel band with the composite which had decayed. I
replaced the composite with a strip of leather, in my case taken from
a worn out wallet. Works great. I glued the leather to the steel with
contact cement.

GG

I tried some silicone rubber sleeving thinking that the hollow structure
would give squashiness and the rubber for the friction but it was too
thick
and grabbing-on/stalling, rather than braking in the forwards rotation
sense.
Leather sounds a reasonable structural equivalent, will give that a go.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/


What about felt and then wipe some silicon rubber sealer into the surface ?

Arfa

I would try the material from a tension band.

Ron