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 Strongberg Carlson 5A26
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 Return to top of page · Post #: 1 · Written at 9:33:16 AM on 28 August 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 659

This post is for Stringers benefit. I thought his post may be too far down to be noticed.
I recently obtained a part chassis from the Tony H collection. The power transformer appears ok .Primary winding measures ok . It physically looks good and it meggers ok. Stringer my email is open send me your address if you want this and I will send you what remains of the chassis . It was incomplete before and now even more so I have used the tuning gang from it to rebuild my little general.
RegardsJimb


 
 Return to top of page · Post #: 2 · Written at 1:37:48 PM on 31 August 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 659

If any of you know stringer, could you please direct him to this post. He has disappeared off the forum. His email is blocked . I am only trying to help him.
RegardsJim


 
 Return to top of page · Post #: 3 · Written at 11:48:42 AM on 17 September 2020.
Stringer's Gravatar
 Location: Mount Waverley, VIC
 Member since 29 June 2020
 Member #: 2423
 Postcount: 4

Thank you Jim for the chassis I salvaged the transformer, both pots, two valves and the graticule.
After a capacitor swap out and couple of resistors I now have a fully working Stromberg Carlson model 5A26.
Your help and generosity is most appreciated.
My Regards Jim Stringer


 
 Return to top of page · Post #: 4 · Written at 11:54:13 AM on 17 September 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6012

Great outcome.


 
 Return to top of page · Post #: 5 · Written at 4:34:26 PM on 17 September 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 659

Hello Jim.
Great to hear, the case for that radio has become available I think it is in good order. I was given that chassis it already had bits missing I intended to use the choke but it was crook it read 300kohm probably suffering from some form of oxidation I used the tunning gang and some other bits to rebuild a Little General . So I guess two other radios are now working as a result of that chassis . I was up at Tony H's place returning another radio I had repaired for him and he had dug the case out .As I have mentioned on other posts he inherited his late dads house and it is full of stuff and as he progressed a little further he came across that case. He asked me if I knew what it was off.
I did not have the heart to tell him it was from the radio he gave me for parts and was now almost a skeleton. I will make sure he does not throw it out.
Kind Regards Jimb.


 
 Return to top of page · Post #: 6 · Written at 1:40:39 PM on 18 September 2020.
Old Mick's Gravatar
 Location: Highett, VIC
 Member since 11 November 2015
 Member #: 1822
 Postcount: 17

Hi Jimb,

I have a 5A26 that the case is broken.

Do you still have access to that case?

Are there any knobs to go with it?

Regards,

Michael.


 
 Return to top of page · Post #: 7 · Written at 7:57:28 AM on 19 September 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 659

Hello Michael.
Defiantly no knobs. I should be able to get hold of the case . I won't be seeing Tony again for a few weeks until if ever I finish his Empire State radio which I am slowly going backwards on. The problem will be getting it to you in one piece . I don't suppose you have any relatives in NSW that could pick it up ? I am sure if it could be picked up he would be happy to let you have it. It is a lot harder to send a Bakelite case than bits of an old chassis that would survive the rough handling. Leave it with me, wife going back into hospital on Monday for more surgery so I need a bit of time.
Regards Jimb (Jim)


 
 Return to top of page · Post #: 8 · Written at 1:44:21 PM on 19 September 2020.
Old Mick's Gravatar
 Location: Highett, VIC
 Member since 11 November 2015
 Member #: 1822
 Postcount: 17

Hi Jimb,

OK. Don't worry about it.

It sounds like it would be too much of a hassle to get it down here.

After some of the horror stories I have heard about people who have tried to send
bakelite bits about in the mail, I wouldn't risk it.

My 5A26 came as a "bitzer", it was missing a speaker, a 6B6G valve, and the oscillator
coil assembly. It still needs a set of knobs.

It is a nice radio though.

I Got a 5A27 for parts.

The 5A27 looks the same but it has a different valve lineup and it uses a 6SA7, so the oscillator
coil is different.

Regards,
Michael.


 
 Return to top of page · Post #: 9 · Written at 2:36:50 PM on 19 September 2020.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1905

If you decide to have a go anyway, this method is known to work reliably:

https://vintage-radio.com.au/default.asp?f=1&th=1194

Not cheap though. Those "aerosol" cans of expanding foam add cost.

I seem to recall once seeing a liquid 2 part mix that works out a lot cheaper.


 
 Return to top of page · Post #: 10 · Written at 9:35:36 PM on 19 September 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4344

That foam is really handy & I have had pumps & other stuff wrapped in it. Great for upsetting Rabbits & other vermin like Euro's that like to make, or live in holes. I have a cabinet on a North wall and despite the insulation can get warm, however, things can fall and get behind it & as its bolted down and anchored to the wall that is a problem.

Simple solution: Make up a bag or get a dry cleaning one (or perhaps more) and set in place between the cabinet & wall. Pump an amount of foam into it and it fills the cavity. After that you trim it and the plastic bag stops the foam sticking to the wall & cabinet.


 
 Return to top of page · Post #: 11 · Written at 10:51:52 PM on 19 September 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 659

Hello Michael.
If you can wait a while I will see what I can do . It would be good to have the case back in use.The timing is not good for me just now.
Regards Jim.


 
 Return to top of page · Post #: 12 · Written at 9:28:31 AM on 20 September 2020.
Old Mick's Gravatar
 Location: Highett, VIC
 Member since 11 November 2015
 Member #: 1822
 Postcount: 17

Hi Jimb,

No worries. Thanks

It has been sitting here for a couple of years now.

Still works OK though, just has extra ventilation above the rectifier and output valve.

I would say that the bakelite cops a bit of heat from these and becomes brittle.

Regards,

Michael.


 
 Return to top of page · Post #: 13 · Written at 11:03:01 PM on 20 September 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4344

There are two things that destroy cabinets and lifting it by the top is but one. Many of the plastic cabinets are suffering heat damage above the hotter valves & clearance has a significant part to play in sending the case brittle.

Marc


 
 Return to top of page · Post #: 14 · Written at 10:33:30 AM on 21 September 2020.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6349

In addition to Marc's comment, coloured bakelite is even more prone to breakage than brown, burgundy or black because it is a different type. Bakelite made with urea formaldehyde is a lot more brittle than that made of phenol formaldehyde and the latter can also contain fillers such as timber and asbestos wich helps with a degree of flexibility.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 15 · Written at 2:49:16 PM on 21 September 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4344

The later Bakelite after the 1909 patent for it (polyoxybenzylmethylenglycolanhydride) ran out in 1927. The later so called Bakelite was Catalin which was a more pure form of a phenol formaldehyde thermo setting polymer, not containing that use to hide what fillers were used in the original. That lead to the so called coloured Bakelite.


 
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