Joined: Jun 14, 2005 Posts: 25 Location: São Paulo - Brazil
Posted: Sun Jun 06, 2010 10:41 am Post subject: M31C Machine Gun Mount
Hi fellows.
I'm looking for pictures and additiuonal informations about the installation of a M31C machine gun mount on a M38 jeep.
As far I know, this mount was developed for MB or GPW installation, which have also a special support on the frame. So I would like to check if is possible to install a regular M31C on a M38 or if adaptations are needed.
I have here a M31C (very) detailed description which i got from Jeep draw. But again, only have information from '42 jeeps.
Hello Lucianno. The M31 as you have discovered was for the WWII MB/GPW with the crossmember mounted support plate below the floor. The M38 did not have that support plate below the floor. The Army designed a modified M31 just for the M38 and it's model # is M31A1. Then the M31 was updated for the M38A1 and it's new model # was M31C which can be used on the M38A1 and the MB/GPW.
It would not be difficult to modify the jeep draw drawings for the M31A1 mount.
There was a very good article on these three mounts in the Military Vehicle Magazine August 2003. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Joined: Jun 14, 2005 Posts: 25 Location: São Paulo - Brazil
Posted: Mon Jul 11, 2011 3:20 pm Post subject:
Hello, friends
After a long time I´m working on the M38 machine gun mount project. I´m basing my project on M31C Jeep Draw´s project (from Jon Rojers). So I´m trying to compare the M31C (good for MB´s and GPW´s) vs M31-A1 (right for M38).
From my point of view, the main structure looks pretty the same.
But since I don´t have a proper M31-A1 project, with distances, lenghts and quotes (I have only the manual, that I got here in the forum), I´m using a complete M31C as refference. I intend to build the "under floor M31-A1 sub-structure" and use a M31C on top.
So is the M31-A1 based on a M31C mount? I mean, are the main tube lenghts and the three legs lenght/position the same from M31C and M31A1?
Someone told me that the two rear legs have a different angle and a different lenght, and the main tube is higher that the M31C.
This is not easy job (well, nothing related to M38 are easy...), since most M38´s machine gun mount are adapted instead to have an original m31-A1.
My understanding is the vertical tube and base assy are the same except for the M31A1 does not have the travel arm or it's brackets and the attach angles for the two rearward legs are different. I don't see why you can't complete the under floor supports and bolt the tube and front leg in place then just fabricate the two rear legs to reach the floor outboard supports and the existing rear angles on your M31C tube. Or if you are fabricating a tube from the Jeep Draw drawings leave the two rear angles off the tub until you establish their positions after they are fitted to the outboard under the floor supports. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
Forum FAQ
Search
Usergroups
Profile
Log in to check your private messages
Log in
