PT Boat Forum


Moderated by: Dick, Jeff D

The PT Boat Forum ª PT Boats of WWII ª  PT Boats - General

Next Page | Page: 1 of 2

Back to Topic Index Page 52 | Replies: 14 | Pages: [1] 2

 Author  Topic: 37mm Mk4
Patrick Matthews

New Member
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Oct 18, 2014 - 5:42am
So I'm looking to make the 37mm, even though it's not needed for my current build. I've gathered up Al's drawings and all the photos I could scrounge on the web... but the available web shots are just not showing all the details I want. So, I stopped by the USAF museum at Wright-Patterson to get some close-ups of their example, which is set up as the entire P-39 power plant and gun installation in a separate exhibit.A few snapshots below (I have more!).

Questions:
Anyone else have a photo album, perhaps from PT-658, showing details of the handle/trigger and jury-rigged pedestal?
Did these installations use borrowed pedestal yokes from 20mm's?
Any stories about how the adaptation was developed? Was it up to each crew, or did the tenders' shops develop the hardware?
Thks!









Patrick Matthews
Matthews Model Marine
http://matthewsmodelmarine.wordpress.com/

Total Posts: | Joined: Unregistered | IP Logged

David Waples

TOP BOSS
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of David Waples  Posted on: Oct 18, 2014 - 6:02am
Patrick,
Al Ross gave me some excellent advice recently on this subject. Go to the aviation side. I found a place selling the Oldsmobile cannon operating manual for $15.

http://www.ioffer.com/i/us-37mm-m4-aircraft-auto-cannon-p39-pt-boat-manual-153311634

Other than that if you search P-39's and M-4 37mm cannon you'll find information. There's a real good site that I can't put my finger on that really breaks down this weapon. I'm sure somebody will be able to find it.

Dave

David Waples

Total Posts: 1638 | Joined: Jan 2, 2007 - 9:55pm | IP Logged

Jeff D

Moderator
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jeff D   Send Email To Jeff D Posted on: Oct 18, 2014 - 7:48am
That is a neat display, thanks for sharing Pat.



Total Posts: 2071 | Joined: Dec 21, 2006 - 1:30am | IP Logged

Drew Cook

TOP BOSS
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Drew Cook  Posted on: Oct 18, 2014 - 2:21pm
No wonder the Russkies loved those P-39s we gave them...the 37 mm cannons in those rear-engine car-door planes chewed up a lot of Krautheads!


Total Posts: 1290 | Joined: Oct 19, 2006 - 10:44am | IP Logged

Patrick Matthews

New Member
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Oct 22, 2014 - 9:32am
Forgive me, for I have not read all the materials...

...but speaking of 37mm cannons, a question on the anti-tank gun so famously used on PT-109: Was this a one-off usage, or did other boats mount the same weapon?

Thx, Pat




Patrick Matthews
Matthews Model Marine
http://matthewsmodelmarine.wordpress.com/

Total Posts: | Joined: Unregistered | IP Logged

TED WALTHER

TOP BOSS
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of TED WALTHER   Send Email To TED WALTHER Posted on: Oct 22, 2014 - 1:39pm
Pat;
I will sneak in here and answer this quick, before anyone really notices, a few boats had them, during the same time period, I have seen one or two photos.
Take care,
TED


Total Posts: 2933 | Joined: Oct 16, 2006 - 7:42am | IP Logged

David Waples

TOP BOSS
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of David Waples  Posted on: Oct 22, 2014 - 7:34pm
I noticed Ted! Surprise! Just a comment and I don't know how true it is. These guns seemed to appear about the same time. I was pretty sure somebody had identified at least 3 boats that had the anti-tank gun permanently mounted. I did read that the down side of this gun was that it took several people to operate it. The auto cannon could be operated by one person and could fire automatically. I don't know for sure but I suspect that these guns were replaced by the auto cannons. Maybe somebody knows? Tracy posted a nice photo of a permanent mount for the 37mm anti tank.

 photo nIeyh4z_zps12b17435.jpg

Dave

David Waples

Total Posts: 1638 | Joined: Jan 2, 2007 - 9:55pm | IP Logged

Patrick Matthews

New Member
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Nov 1, 2014 - 11:47am
OK, have a reasonable model of the early Mk4 37mm, printable in the usual sizes.
But what mount to use?? Every one from this period looks unique! Anyone have a favorite? Or do I just leave that to the modeler...

Ditto for the "handlebars"...




Patrick Matthews
Matthews Model Marine
http://matthewsmodelmarine.wordpress.com/

Total Posts: | Joined: Unregistered | IP Logged

David Waples

TOP BOSS
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of David Waples  Posted on: Nov 1, 2014 - 12:50pm
I would certainly be interested in one of these in 1/35 scale. Maybe two.

As for the mounts there are many. The most common mounts I see that would lend themselves to 3D printing would be the short tripod mounts. I think they are Mk. XIV but not positive about that. Basically the short tripod light naval mount.

The handle that I see most often is an oval handle or more of a race track shape.

 photo 37mmPT-331_zps04dfb265.jpg

Here's a photo of a boat with 37mm on the this mount.

 photo PT122BillSkadeRON8underwayatspeed1_zps5aaa9eb2.jpg

David Waples

Total Posts: 1638 | Joined: Jan 2, 2007 - 9:55pm | IP Logged

Will Day

TOP BOSS
  

    
Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Will Day   Send Email To Will Day Posted on: Nov 1, 2014 - 6:09pm
I know the 108 boat had one of the early 37mm's at one time.


Will

Total Posts: 1954 | Joined: Oct 8, 2006 - 4:19pm | IP Logged

Next Page

Pages: [1] 2


Lock Topic

 

Forum Legend

New Member

Reply to topic

More than 25 posts | Full Member

Reply to topic with quoted message

More than 50 posts | Advanced Member

Edit Message

More than 150 posts | MASTER

View profile

More than 300 posts | TOP BOSS

Email member