[markmokris]

Hey Mark,
I thought you liked rewinding coils?????

HaHa
Terry

Ha!  I do.  But it's a secret Terry.

Hey a problem on my Philco 90 is that the pinch wheel that turns the dial is slipping in spots.  Probably from excessive wear.  Have you run into that problem?

Mark K8KZ

[Eliot Ness]

That's a very common problem Mark.  A search will turn up more info:

http://www.philcoradio.com/phorum/showth...p?tid=1399

^ note post 8 & 10

more info:

http://www.antiqueradios.com/forums/view...p?t=148277

http://www.antiqueradios.com/forums/view...eb9800c19c

[markmokris]

That's a very common problem Mark.  A search will turn up more info:

http://www.philcoradio.com/phorum/showth...p?tid=1399

^ note post 8 & 10

more info:

http://www.antiqueradios.com/forums/view...p?t=148277

http://www.antiqueradios.com/forums/view...eb9800c19c

Thanks John!

I read these post, and I am having a hard time understanding what they are trying to do with piece of tubing and enlarging the hole etc.  I am going to have to study the posts again with the tuning mechanism in front me.  Maybe it will make more sense.

Mark K8KZ

[Eliot Ness]

I read these post, and I am having a hard time understanding what they are trying to do with piece of tubing and enlarging the hole etc.......

Mark, they are talking about the hole where the tuning shaft goes (circled in red).  It becomes worn (enlarged) so they either enlarge it and install a brass bushing, or using tubing to do the same.  I copied Ron's picture and circled the area in question in red.  Hopefully this will help clear it up.

   

[markmokris]

I read these post, and I am having a hard time understanding what they are trying to do with piece of tubing and enlarging the hole etc.......

Mark, they are talking about the hole where the tuning shaft goes (circled in red).  It becomes worn (enlarged) so they either enlarge it and install a brass bushing, or using tubing to do the same.  I copied Ron's picture and circled the area in question in red.  Hopefully this will help clear it up.

Yes that helps a lot!  I can see what they are trying to do with the bushing.

I think someone in the past tried to make a repair, because the rivet on the right had been drilled out and a sheet metal screw installed.  Probably trying to increase the downward pressure on the entire shaft to increase friction.

Sorry to the original poster for hijacking this thread.

Appreciate the info though.  Thanks John!

Mark K8KZ

[PhilcoPhan1936]

Sorry to the original poster for hijacking this thread.

Appreciate the info though.  Thanks John!

Mark K8KZ

No apologies necessary Mark. This is all good info to know and may be useful when I dive into this restoration. If not applicable on this, it may be on a future project.

[markmokris]

Sorry to the original poster for hijacking this thread.

Appreciate the info though.  Thanks John!

Mark K8KZ

No apologies necessary Mark. This is all good info to know and may be useful when I dive into this restoration. If not applicable on this, it may be on a future project.

Jeff and John,

Last night loosened the set screw that locks the dial on the tuning condenser shaft.  I pulled the dial out horizontally about 1/16 of an inch, then tightened the set screw back up.  I discovered that this additional horizontal pressure on the pinch roller creates sufficient friction so that the dial no longer slips!

I think that fixes my problem as long as it doesn't start slipping again.  So far, so good.

I have restuffed about a third of the bakelite blocks and the two electrolytics, and already the radio is playing real nice! These Philco 90s were really well-made.

Mark K8KZ