MLU FORUM  

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

Notices

Reply
 
Thread Tools Display Modes
  #1  
Old 12-05-21, 23:23
James D Teel II James D Teel II is offline
Registered User
 
Join Date: Jun 2019
Location: Edmond, Oklahoma, USA
Posts: 84
Default WS-19 Crystal Calibrator attachment

In the instance of the WS-19, does anyone know the sizes of the screws and special washers used to attach the crystal calibrator to the side of the PSU? Theyíre not listed in the manual. Thanks.
__________________
V/R

James D. Teel II
Edmond, Oklahoma
Retired Police Sergeant/Bomb Tech
1943 Willys MB/ITM jeep
1942 SS Cars No1Mk1 LtWt trailer
Reply With Quote
  #2  
Old 13-05-21, 00:25
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,889
Default

Hello James.

They are a slotted pan head machine screw, 8-32 x 1/4-inch, with matching internal toothed lock washers.

You may end up needing to find 1/2-inch ones and trimming them back. Clearances inside the PSU Case will be critical, to allow for its safe removal from its case with the calibrator mounted.

Hope this helps with the project.

David
Reply With Quote
  #3  
Old 13-05-21, 01:09
James D Teel II James D Teel II is offline
Registered User
 
Join Date: Jun 2019
Location: Edmond, Oklahoma, USA
Posts: 84
Default

David,

As always, youíve come through! Much thanks.
__________________
V/R

James D. Teel II
Edmond, Oklahoma
Retired Police Sergeant/Bomb Tech
1943 Willys MB/ITM jeep
1942 SS Cars No1Mk1 LtWt trailer
Reply With Quote
  #4  
Old 13-05-21, 01:59
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,889
Default

You are welcome, James.

Not sure my explanation covered all the bases, however.

The pan head is necessary as it ends up inside the PSU Case when the calibrator is mounted. That gives clearance for getting the PSU in and out of its case.

The screw shank ends up sticking into the calibrator case, where it needs to be short enough not to snag the calibrator chassis when it needs to be removed and replaced.

David
Reply With Quote
  #5  
Old 13-05-21, 03:08
James D Teel II James D Teel II is offline
Registered User
 
Join Date: Jun 2019
Location: Edmond, Oklahoma, USA
Posts: 84
Default

Thatís a good reason. By the way, are those UNF or BSF threads? I ask, because I recently restored the lunette assembly on my No1Mk1 trailer, and found both types as original equipment in close proximity to each other.
__________________
V/R

James D. Teel II
Edmond, Oklahoma
Retired Police Sergeant/Bomb Tech
1943 Willys MB/ITM jeep
1942 SS Cars No1Mk1 LtWt trailer
Reply With Quote
  #6  
Old 13-05-21, 05:09
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB
Posts: 2,889
Default

8-32 NC according to my guage set, James.

David
Reply With Quote
  #7  
Old 13-05-21, 08:41
Bruce MacMillan Bruce MacMillan is offline
a Canuck/Brit in Blighty
 
Join Date: Jul 2004
Location: Hell Fire Corner, Kent UK
Posts: 633
Default

even the manual omits the screw size except that they are round head. If the calibrator is mounted flat on top the crystal holder has to be rotated.
Attached Thumbnails
calibrator1.jpg   xtalcal9.jpg  
Reply With Quote
  #8  
Old 13-05-21, 15:10
James D Teel II James D Teel II is offline
Registered User
 
Join Date: Jun 2019
Location: Edmond, Oklahoma, USA
Posts: 84
Default

Quote:
Originally Posted by David Dunlop View Post
8-32 NC according to my guage set, James.

David
Thank you.
__________________
V/R

James D. Teel II
Edmond, Oklahoma
Retired Police Sergeant/Bomb Tech
1943 Willys MB/ITM jeep
1942 SS Cars No1Mk1 LtWt trailer
Reply With Quote
  #9  
Old 13-05-21, 15:16
James D Teel II James D Teel II is offline
Registered User
 
Join Date: Jun 2019
Location: Edmond, Oklahoma, USA
Posts: 84
Default

Click image for larger version

Name:	80A3864C-CA10-4081-A357-FDA7A56E997E.jpeg
Views:	1
Size:	123.4 KB
ID:	121933
Quote:
Originally Posted by Bruce MacMillan View Post
even the manual omits the screw size except that they are round head. If the calibrator is mounted flat on top the crystal holder has to be rotated.
We have almost the same manual. Iím sure somewhere thereís an actual parts catalog, but until then, I have to ask if theyíre missing. Edit: Iíve no idea why this posted sideways like that. Itís frustrating.
__________________
V/R

James D. Teel II
Edmond, Oklahoma
Retired Police Sergeant/Bomb Tech
1943 Willys MB/ITM jeep
1942 SS Cars No1Mk1 LtWt trailer
Reply With Quote
  #10  
Old 13-05-21, 18:24
Ron Pier's Avatar
Ron Pier Ron Pier is offline
Registered User
 
Join Date: Apr 2009
Location: Poole. UK
Posts: 1,179
Default

Quote:
Originally Posted by James D Teel II View Post
Attachment 121933

Iíve no idea why this posted sideways like that. Itís frustrating.

Usually pictures from smart phones from my experience? Ron
Reply With Quote
  #11  
Old 27-05-21, 14:49
Bruce MacMillan Bruce MacMillan is offline
a Canuck/Brit in Blighty
 
Join Date: Jul 2004
Location: Hell Fire Corner, Kent UK
Posts: 633
Default

James, As you have several US 19 sets I wonder if they could be from this batch. I found this file while searching the Canadiana archive and have posted to a couple of user groups.
Attached Thumbnails
ww2marines.jpg  
Reply With Quote
  #12  
Old 27-05-21, 15:03
James D Teel II James D Teel II is offline
Registered User
 
Join Date: Jun 2019
Location: Edmond, Oklahoma, USA
Posts: 84
Default

Thatís interesting, but my sets couldnít have been in that particular group because one was made in 1943, one in 1944, and though the other one doesnít have a data plate, it came from Canada. Thatís not to say they still werenít in the system though.
__________________
V/R

James D. Teel II
Edmond, Oklahoma
Retired Police Sergeant/Bomb Tech
1943 Willys MB/ITM jeep
1942 SS Cars No1Mk1 LtWt trailer
Reply With Quote
  #13  
Old 27-05-21, 16:18
Michael R. Michael R. is offline
Registered User
 
Join Date: Jun 2011
Location: Canada
Posts: 1,080
Default

Edit: Iíve no idea why this posted sideways like that. Itís frustrating.
Attached Images
 
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
WS-19 crystal calibrator dog bone James D Teel II The Wireless Forum 8 22-11-20 22:06
Wanted: WS 38 Mk.III Crystal Calibrator No.9 Johnny Canuck For Sale Or Wanted 0 21-09-20 13:24
Wanted: WTB 6p-6p WS-19 Crystal Calibrator Dog Bone James D Teel II For Sale Or Wanted 0 09-09-20 02:50
19-Set Crystal Calibrator David Dunlop The Wireless Forum 17 08-09-19 20:58
For Sale: No19 Set Crystal Calibrator B. Harris For Sale Or Wanted 0 06-08-13 00:37


All times are GMT +2. The time now is 12:07.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Copyright © Maple Leaf Up, 2003-2016