MLU FORUM  

Go Back   MLU FORUM > GENERAL WW2 TOPICS > The Wireless Forum

Notices

Reply
 
Thread Tools Display Modes
  #211  
Old 28-11-19, 19:39
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

Thought I would post another update photo of the collective project now that 80% of the main set components are now assembled.

Just the Carrier No. 4 delivery to sort out now.

David
Attached Thumbnails
WS No. 52 Project 28-11-2019.JPG  
Reply With Quote
  #212  
Old 28-11-19, 20:21
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default 52-Set Sender Modification Instructions

This is almost a simple topic as only one modification shows up in the listing I have for the Sender. Naturally, it is Modification No, 1, for the installation of the modification card holder.

This is where the 'almost' above comes in.

The instructions state a metal plate is to be removed from the left rear corner of the chassis, holes to be drilled into the plate, the holder attached and the plate returned to its position on the chassis. Problem is, there is no metal plate on the chassis in that location, either on the rear or left side of the chassis. I checked the Sender chassis I have and all the photos of the Sender in the manual. No such plate.

There is no room at all on the top of the chassis to mount a card holder and I could see nothing anywhere when looking through the chassis. Curiosity got the better of me finally and as a last resort, I carefully turned the chassis over to have a look at the bottom. There it was, as per the attached photo. And there was a modification card inside stating the modification was done in 1947, but no mention of the Shop where the work was done.

David
Attached Thumbnails
WS No. 52 Sender 5.JPG  
Reply With Quote
  #213  
Old 01-12-19, 03:04
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

I have not really detailed out the parts sequence for restoration work on this project just yet. The Carrier No. 4 still needs to be looked at up close once it arrives, but other than that, all I know so far is the first priority will be to finish work on the two receivers. That work is already three quarters completed, so best follow through with it.

My suspicion is the Supply Unit may end up being the last item tackled. I still have two single conductor connector cables to find for the main set and until they are found, I do not want to risk damage to the Sender, Supply Unit or both by ad hocing anything foolish. So buying more time by restoring the supply last makes sense from that perspective.

I was initially hoping the panel of the Supply Unit could be polished back down to the right shade of paint patina to blend in with the two receivers, but now that I have cleaned the grime off and had a closer look, that will no longer be possible.

First, too much paint is completely gone from the bottom of the panel. Nearly an inch, and in that same area, the bottom inch of the Receiver Vibrator Supply Module has been bent inwards just enough that it will have to be tooled carefully back to straight. I don’t think there is enough ‘careful’ available in the paint to prevent it from spalling off when that work is done.

The final factor in deciding on a complete restore of the supply panel was the discovery of just how incredibly sloppy the decal application work was during its 1966 shop refurbishment. Take a look at the attached factory photo of the supply decals from the manual, and compare it to the work done on this supply. Yikes!

I think some good water transfer decal software is on the horizon for me at some point.

David
Attached Thumbnails
52-Set Supply Unit Decals.jpg   WS No. 52 Supply Unit 1.JPG  
Reply With Quote
  #214  
Old 01-12-19, 03:37
Grant Bowker Grant Bowker is online now
Registered User
 
Join Date: Jul 2006
Location: Ottawa, Canada
Posts: 1,858
Default

Quote:
Originally Posted by David Dunlop View Post
I think some good water transfer decal software is on the horizon for me at some point.
I recall reading about creating water transfer deals by printing. One issue is with printing white - most printers rely on white paper rather than actually printing white so you either need to find one of the rare printers that deposits white to the page or print on transfer film that has white background (and cover every scrap that you don't want to show white (including around the edges)).
Reply With Quote
  #215  
Old 01-12-19, 04:18
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

Hi Grant.

Yes. I suspect a bit of research will be involved when I get to that point. And very likely, a new desk top system.

Something else I just noticed reading your response. The decals used in the 1966 rebuild have a similar overall size to each of the originals, but there is a lot more black surrounding the words. The decals in the manual photo are a match in surround size to the decals on my receivers, and the Sender.

Hmmm. I think I will have to put the black light on the Supply Unit and Sender tomorrow and see what, if anything glows, and in what colours.

David
Reply With Quote
  #216  
Old 01-12-19, 14:52
Grant Bowker Grant Bowker is online now
Registered User
 
Join Date: Jul 2006
Location: Ottawa, Canada
Posts: 1,858
Default

A really quick Google says that waterslide "paper" to suit either laser or inkjet printers exists with either white or clear background (i.e. four different types of "paper").
At one time there were dye sublimation printers made by ALPS that could print white but they seem to be out of business...
There are listings on ebay for refurbished Alps printers for waterslide printing - eg. https://www.ebay.ca/itm/Refurnbished...IAAOSwRJ1Zn~QZ There are also results for Windows 10 drivers for the Alps MD-1000. However, specialized orphans can be relatively expensive and the consumables can also be out of line compared to more widely used and current product.
Reply With Quote
  #217  
Old 01-12-19, 23:51
Bob Carriere Bob Carriere is offline
Registered User
 
Join Date: Mar 2003
Location: Hammond, Ontario
Posts: 4,592
Default Yellow mellow.......

Could a very light canary yellow or very light grey be substituted for the white color?????
__________________
Bob Carriere....B.T.B
C15a Cab 11
Hammond, Ontario
Canada
Reply With Quote
  #218  
Old 06-12-19, 20:09
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

The last major piece of this project arrived yesterday afternoon via FedEx. Quite an impressive beast when you get it unpacked!

Main plan for it at the moment is a basic clean up of all the years of dirt and grime accumulation. Sadly, it underwent a 1960’s era repaint in which all original finish was stripped and NATO green applied. Like the Remote Receiver Case I found, even the inside of the carrier was painted. In the Remote Receiver Case, the paint inside was thin enough the two grounding springs in the upper back of the case were still capable of grounding the case to the chassis of the receiver. The paint job on this Carriers No. 4, however, is so thick inside, I don’t think any of the six grounding springs could work properly again.

Once cleaned, I must read up in the manual about the correct way to reinstall the three components. Jacques Fortin brought this point to my attention, as it is a very tricky task. A 52-Set definitely makes for a very interesting learning curve!

David
Attached Thumbnails
WS No. 52 Carriers No. 4 1.JPG   WS No. 52 Carriers No. 4 2.JPG   WS No. 52 Carriers No. 4 3.JPG  
Reply With Quote
  #219  
Old 06-12-19, 20:26
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

Hi Bob.

In reply to your question on water transfer decal colours, it could easily be done that way, yes.

From what I can piece together, the original decals were printed with the layers of paint colours built up on them. This included the small patches of luminous paint. When you look at the original decals up close at an angle, you notice they are not completely flat on the radio panels. There is always a subtle rectangular raised patch visible, where the pad of luminous paint was applied. The lettering in this instance is the clear portions of the decal allowing the 'white' luminous paint patch to show through.

If one is restoring a panel and not worried about the decals being luminous anymore, white background transfer sheets are a good fit. If, however, one wants to preserve the glow in the dark appearance of the panel, things get a lot more complicated, quickly. Commercial printers could possible reproduce the original luminous decals, but at what cost? I have some ideas to work around that problem floating about in my head at the moment, but have not yet made complete sense of it all.

Adding to the problem, is the luminous paints used during the 1940's. They all have a very similar, if not in fact identical appearance in daylight: a milky white colour. Under UV stimulation, however, some glow blue, some yellow, some orange and some green. Probably other colours and shade factors out there as well. Blues and greens are reasonably common in craft supply places today, but I have not looked enough to see if other colours can be had with the required milky white daytime appearance. I have found an orange one, but it comes as a neon orange daytime colour. Yikes!

David
Reply With Quote
  #220  
Old 07-12-19, 01:23
Bruce Parker Bruce Parker is offline
GM Fox I
 
Join Date: Feb 2003
Location: SW Ontario, Canada
Posts: 1,865
Default

Dave, I would never have believed a loose 52 set carrier would be out there. Good find!!!!! I think you and I need to mix up a batch of matt brown wrinkle paint.

Quote:
Originally Posted by David Dunlop View Post
The last major piece of this project arrived yesterday afternoon via FedEx. Quite an impressive beast when you get it unpacked!

Main plan for it at the moment is a basic clean up of all the years of dirt and grime accumulation. Sadly, it underwent a 1960’s era repaint in which all original finish was stripped and NATO green applied. Like the Remote Receiver Case I found, even the inside of the carrier was painted. In the Remote Receiver Case, the paint inside was thin enough the two grounding springs in the upper back of the case were still capable of grounding the case to the chassis of the receiver. The paint job on this Carriers No. 4, however, is so thick inside, I don’t think any of the six grounding springs could work properly again.

Once cleaned, I must read up in the manual about the correct way to reinstall the three components. Jacques Fortin brought this point to my attention, as it is a very tricky task. A 52-Set definitely makes for a very interesting learning curve!

David
Reply With Quote
  #221  
Old 07-12-19, 02:54
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

Actually, Bruce, it was part of a complete set out of Quebec. The Supply Unit and Sender are its mates. The complete set was $200.00 Cdn. I did not need the Receiver so gave it to Jacques Fortin to save a bit on shipping costs.

Its interesting, Bruce, in the roughly three years I have been looking for 52-Set parts, two complete sets have surfaced. This one and another about a year ago in Alberta. That one started out at $400 Cdn, jumped to $1,000 and then went dark. It might still be out there. Neither of the owners knew to identify what they had by the information on the ID tags on each component in front of them. The sets showed up on line as ‘Old Army Radio’, ‘Antique Military Radio’, or some other description. If you look on line under those types of terms, you get swamped with hits. Thousands of items pop up, covering all decades from WW2 to the present. Makes it really hard. I have come to suspect these sets, though few in numbers, are still very much out there. The trick is flushing them out.

It will be interesting to sort out a good wrinkle No. 2 Brown. Very few enamels still out there and even fewer wrinkle options. Compounding the problem is the fact ‘wrinkle’ does not seem to define a single thing, but more typically a spectrum of paints, all of which seem to show up on wartime wireless equipment sooner or later.

While I think of it, Bruce. The mounting hardware securing the Receiver, Supply Unit and Sender in this 52-Set was missing. My Remote Receiver Case has 1/4-20 hex bolts holding the Receiver in place. I am running with that for the Carriers No. 4 at the moment, but find it interesting there are no tools in the set Tool Box to accommodate hex bolts of any size. There are, however, three different sized slot head screw drivers. So, perhaps the mounting hardware was slotted, round head 1/4-20 machine screws. Access to all the screw heads would be a challenge for any of the three sized screw drivers in the tool box, as there are so many knobs, dials and fiddly bits sticking out on the front panels. How is your 52-set installed in the Carrier No. 4?

David
Reply With Quote
  #222  
Old 13-12-19, 02:28
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

A quick update photo of the Carriers No. 4 after a good wash, brushing, air gun blow and vacuum. Quite a difference now from its first arrival as per the first photo in Post 218.

David
Attached Thumbnails
WS No. 52 Carriers No. 4 4.JPG  
Reply With Quote
  #223  
Old 13-12-19, 02:34
Bruce Parker Bruce Parker is offline
GM Fox I
 
Join Date: Feb 2003
Location: SW Ontario, Canada
Posts: 1,865
Default

Quote:
Originally Posted by David Dunlop View Post
A quick update photo of the Carriers No. 4 after a good wash, brushing, air gun blow and vacuum. Quite a difference now from its first arrival as per the first photo in Post 218.

David
Just asking….

Is the bed on the left what your wife insists you sleep on when you get too worked up on your project? My wife demanded one too...so just asking....

Last edited by Bruce Parker; 13-12-19 at 03:22.
Reply With Quote
  #224  
Old 13-12-19, 02:48
Grant Bowker Grant Bowker is online now
Registered User
 
Join Date: Jul 2006
Location: Ottawa, Canada
Posts: 1,858
Default

I think it looks like a mock-up of the Diefenbunker. Not the PM's office but some of the work spaces where a duty person would nap by the work, expected to spring to life as required. I know the feeling - expected to do that at work on occasion.
Reply With Quote
  #225  
Old 13-12-19, 05:44
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

Truth be told, folks, napping has happened from time to time while working on this project.

Debbie has been very supportive. she knows how much I have dreamed of putting one of these wireless sets back together and on the air, and I have managed to hold up my end of the project by keeping the costs out of the realm of the household budget.

She has even volunteered to help me with hauling the Carriers No. 4 up onto the wireless bench in the background, into its designated resting place. Hope to get that done this weekend.

David
Reply With Quote
  #226  
Old 13-12-19, 05:47
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default COVERS, Metal, No. C1 ZA/CAN 4211

Weighing in at 110 pounds, the Carriers No. 4 is the heaviest piece in the 52-Set wireless. It consists of two main parts, joined together at the sides by means of three rubber Bridge units, each side.

The lower portion of the Carriers No. 4 consists of heavy steel stock, formed and welded together to create essentially a long, U-shaped cradle mount, which is secured to a wireless table by means of two large steel clamp and bolt sets, each side.

The upper section of the Carriers No. 4 is essentially a long steel box with two inner partitions that holds the Receiver, Supply Unit and Sender components of the 52-Set. The basic box is made of one large folded, heavy gauge piece of sheet steel making up the top, rear and bottom of the wireless case. Two separate pieces, mirror images form the ends and two inner pieces form the partitions, each side of the Supply Unit. All four of these pieces, and the two end pieces of the Remote Receiver case, start out the same, but have slightly different stampings and/or holes drilled in them.

On the upper rear portion of the Carriers No. 4, a long, rectangular opening has been punched, with eight equally spaces holes top and bottom, to mount the PLUG, Assemblies, Multi and its corresponding COVERS, Metal No. C1. It is this Plug Assemblies that provides all the interconnections, but one, between the Receiver, Supply Unit and Sender.

The Cover is a single piece stamping out of the same gauge sheet steel as the case portion of the Carriers No. 4.

When removing the screws from the Cover, I was unsure of where to start. The Cover looked heavy and I wanted to be sure when down to the last screw, it stayed accessible if the Cover swung downward. Turned out to be an unnecessary concern. When the last screw was removed, the Cover stayed put. I assumed the fibre gaskets around its edge (GASKETS, Fibre, No. C1 ZA/CAN 4251) had stuck to the paint so gently started to pull backwards on the Cover. It came back about one quarter inch and still stayed put. A close look revealed a pair of retaining brackets screwed to the back of the Carriers No. 4, one at each end of the Plugs opening. Clearly, Canadian Marconi had been aware of the weight of this Cover and how difficult if could be to install it for any reason in tight quarters. Love it! A further steady pull brought the Cover completely free of the two retaining brackets, with the Plug Assemblies Multi tucked safely inside the Cover.

David
Attached Thumbnails
COVERS, Metal, No. C1 .JPG   Retaining Brackets, Covers, Metal, No. C1.JPG  
Reply With Quote
  #227  
Old 13-12-19, 18:21
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default PLUG, Assemblies, Multi No. C1 ZA/CAN 4255

Once I had removed the COVERS, Metal, No. C1 from its retaining brackets on the rear of the Carriers No. 4, things suddenly started to make much more sense in the Instruction Manual for the 52-Set. In particular, Section 6.11 starting on Page 137. This section explains the correct procedure for reinstalling the Receiver, Supply Unit and Sender into the Carriers No. 4, if all three have had to be removed at the same time for any reason.

The only thing that holds the PLUG, Assemblies, Multi to the 52-Set are the five individual Bakelite plugs themselves, once they are pressed into the five corresponding sockets fitted to the back of the three set components. If none of the three components are present, the PLUG, Assemblies, Multi becomes a free-floating object inside the Covers, Metal, No. C1. As a unit, this PLUG, Assemblies is heavy and the vertical wiggle room within the Covers is not enough to prevent the Plug and component sockets from lining up with each other. Same for the lateral movement to either side of the set. With the Cover screwed in place, the two Cover Retaining Brackets either side minimize the side-to-side wiggle of the Plus Assembly to acceptable limits. The exception is the depth of the Covers. See the first photo.

The internal depth of the Covers, Metal, No. C1 is twice that of the Plug Assemblies, Multi. If all three set components have been removed from the Carriers at the same time, as soon as you attempt to replace the first component, it will simply push the Plug, Assemblies, Multi to the back of its Covers, out of reach. You will have no choice at that point, other than to read up on Section 6.11 of the Manual and perform a ‘by the book’ reinstall.

I would also strongly advise you carefully clean the connecting surfaces of both the Bakelite plugs and sockets on the 52-Set. They are a snug fit to start with and it will not take much in the way of fine dirt or dust building up on the surfaces to cause them to bind against each other when being connected or disconnected. They are all black Bakelite and all of mine looked fine at first, but it is amazing how dirty a damp cloth and toothbrush gets when you start cleaning.

It is also a good idea when connecting, or disconnecting these Bakelite connectors, to apply the force you are using perpendicular to the faces of the connectors. In other words, push straight in and pull straight out. If the force you are applying gets too far off the perpendicular, the connecting faces of the plugs and sockets will bind against each other. Bakelite was never a forgiving material at the best of times and these parts are additionally, now 75+ years old. Be nice. The last picture posted here shows the damage that can happen to the Plugs if not treated carefully. Four out of the five in my Carriers No. 4 have this type of damage present.

The nice find was that the paper terminal labels inside the five plugs are minty originals.

The other photo I posted is of the back of the Plug, Assemblies, Multi. Again, a one piece sheet steel stamping, satin nickel plated. The metal gauge seems to be the same as used for the Covers and Carriers.

I have been thinking about the design of the Plug, Assemblies, Multi when it comes to all three components of the wireless set being removed from the Carriers. I have not yet seen any documentation from Canadian Marconi, or the Military end users of the 52-Set flagging this topic as an issue or problem. No revised Covers. No apparent modifications. The logic of the design may be difficult to grasp today, but it would seem to have been a valid design. The same style of connectors system was used by Marconi on wireless sets built for use by the Navy during the war and no concerns appear at that end either.

Two possible justifications for the design come to mind. When mounted on the back of the Carriers No. 4, the Plus Assemblies are open to the inner case of the Carriers. When the fans in the Supply Unit and Sender were operating, warm air would certainly be capable of circulation around the Plug Assemblies so they would stay dry. Secondly, as mentioned earlier, Bakelite is not the most forgiving substance. If the Covers were snugged up against the Plug Assemblies firmly, it is possible the shock of any blow to the surface of the Covers could transfer to the Bakelite connectors and crack them.

That’s all I’ve got on this topic at the moment.

David
Attached Thumbnails
PLUG, Assemblies, Multi No. C1 a.JPG   PLUG, Assemblies, Multi, No. C1 b.JPG   PLUG, Assemblies, Multi, No. C1 c.JPG   PLUG, Assemblies, Multi, No. C1 d.JPG  
Reply With Quote
  #228  
Old 14-12-19, 01:25
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,134
Default

Well, it was an interesting and productive day today.

Debbie and I got the Carriers No. 4 up onto its intended resting place on the wireless bench to start with. I then took the opportunity, while the Plug Assemblies was out in the open to check the continuity of all the circuits therein. They checked out just fine. Then the individual plugs got a cleaning.

Finally, I slid the three main set components into the Carriers No. 4 and reconnected the Plug Assemblies and Cover. That is one challenging task, and I much more fully appreciate Marconi's warnings in the manual about such work, having now gone through it. It did not help that the lower bank of screws on the Cover had to be reinstalled blind because there was only seven inches of clearance between the back of the Carriers No. 4 and the basement wall. Not thrilled about eventually having to do it again when it comes time to repaint the Carriers No. 4, but at least I now know more fully what to expect.

The attached photo shows the 52-Set in its place of honour on the bench. The set from Montreal did not have the Coil, Aerial Tuning assembly with it, so I wonder when the last time was that this set actually had one fitted to the top of it?

Hard to believe I am now just two small connector cables away from having a fully integrated 52-Set. I don't think the progress on this project has fully sunk in yet!

David
Attached Thumbnails
WS No. 52 Project 13-12-2019.JPG  
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Canadian staff car wireless: World War 2 Canadian R103 Receiver Demo Mike Kelly The Wireless Forum 5 24-07-16 16:20
Found: CMP Wireless body project Jim Burrill For Sale Or Wanted 7 05-04-15 01:02
Canadian dehavilland mosquito restoration project David Dunlop WW2 Military History & Equipment 9 10-07-14 01:51
Canadian project David Ellery The Carrier Forum 9 28-04-07 02:36
FOR SALE/TRADE: 1944 CHOREHORSE PROJECT for Signal Corps Wireless Power Unit Project Alain For Sale Or Wanted 1 21-02-07 01:11


All times are GMT +2. The time now is 06:33.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright © Maple Leaf Up, 2003-2016