Author Topic: M2 rear bumpers and steps.  (Read 27757 times)

steve1973

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Re: M2 rear bumpers and steps.
« Reply #30 on: May 13, 2014, 10:54:49 PM »
Since bright87 measured out the main bumper piece and "J" bracket I see no need to draw it out unless someone still wants me to then I will. Thanks again bright87 for that.

Steve A.

bright87

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Re: M2 rear bumpers and steps.
« Reply #31 on: May 13, 2014, 11:03:14 PM »
Steve- I could always use someone with an original to check these prints for accuracy. I have already found some errors and corrected them.
Michael

BombFarm

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Re: M2 rear bumpers and steps.
« Reply #32 on: May 14, 2014, 09:54:44 AM »
I would be very appreciative if someone (hint, hint, Steve) could verify the basic dimentions of the main bumper back/body piece and compare to the PDF that bright87 posted. I am unable to covert the "gillard.dwg" file to PDF but I do have a bare bones free app that I have been able to view the files with. Everything I've looked at so far has been right on with either Steve's drawings or the PDF's that bright87 posted (BTW, Thanks a bunch for that). The problem I'm having is that I am getting different measurements for this particular piece than the ones displayed in the PDF form. I do feel that bright's measurements are the correct ones, but I am overly cautious on this project as I have already produced all the parts for a pair of rear bumpers based on the best information available to me at that time. Of course their just off a little on some measurements so I've decided not to use them. So, obviously I would like to avoid building a second set of "almost correct" bumpers.
Below is a screen shot of what my program is showing for the CAD drawing, as well as a measurement I grabbed this morning that shows the distance between the inboard mounting locations on an original M2 bed for this piece..... Long story short, the info from my two pictures don't tell the same story and that's why I'd like to make absolutely sure the PDF dimensions are spot on.

bright87

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Re: M2 rear bumpers and steps.
« Reply #33 on: May 14, 2014, 11:50:13 AM »
I have also been finding errors in the prints, but I can correct the post as needed with verified information. The end result for these posts, as well as this great site, will be to have the most correct information possible for restorers.
Michael

bright87

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Re: M2 rear bumpers and steps.
« Reply #34 on: May 14, 2014, 11:56:05 AM »
Bombfarm-
Do not build you steps directly from Gillards CAD file-I did and mine are 1" too short and bent in the wrong locations!
Download the pdf I posted and also verify everything-always.

BombFarm

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Re: M2 rear bumpers and steps.
« Reply #35 on: May 14, 2014, 12:21:50 PM »
 I agree that there are a number of inaccurate items in those drawings. I've not been too vocal due to the fact that I don't have an original set in hand to compare to and be 100% sure. Thanks to everyone posting though, it looks like like we're close to wrapping this thing up.

Monkeypirate

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Re: M2 rear bumpers and steps.
« Reply #36 on: May 14, 2014, 03:00:08 PM »
Im glad Im not the only one that thought the files where incorrect. I figured I had just missed some thing!

steve1973

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Re: M2 rear bumpers and steps.
« Reply #37 on: May 14, 2014, 03:28:59 PM »
I will do my best in filling all requests. I will do my beast in getting measurements of the main rear bumper piece as mine is bolted in place. It takes two people for me to remove the bumper and I have to remove the gas tank cover to get to the bolts but will do my best. Just an FYI the CAD drawing of the mail piece bright 87 supplied is upside down it that helps.

Steve A.

bright87

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Re: M2 rear bumpers and steps.
« Reply #38 on: May 14, 2014, 09:21:30 PM »
Guys- What I would probably do is just drill a couple of holes to hold any of these parts in position, and if everything lines up, mark and drill all the others using the holes in the armor for a guide.
Just my opinion.
Michael

bright87

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Re: M2 rear bumpers and steps.
« Reply #39 on: May 30, 2014, 06:43:36 PM »
Well here they are boys and girls- lots of work and a few curse words. I made mine out of 1/4" sheet because i had lots of it, and did not want to buy a piece of 3/16" just for this.
Thanks for all the help that was given.

Tapper02

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Re: M2 rear bumpers and steps.
« Reply #40 on: May 30, 2014, 09:06:19 PM »
Nice work Michael!!
1942 Diamond T M3 Halftrack
  (Being restored to an M3A1 configuration)
  Frame Number M31789
  Ordnance Number 3692
  Hood Number USA W403570-S
1944 Schelm Bros. M10 Ammunition Trailer
  Serial Number 16959
MVPA # 30507

steve1973

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Re: M2 rear bumpers and steps.
« Reply #41 on: May 31, 2014, 03:50:31 AM »
The bumper looks GREAT!! ;D

Keep up the good work.

Steve A.

Smadge

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Re: M2 rear bumpers and steps.
« Reply #42 on: November 11, 2016, 02:35:03 PM »
Did anyone figure out if White had the enclosed bumper end and Autocar's was open?
1941 M2-232 Autocar (restoring)
MVPA Member

col.halftrack

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Re: M2 rear bumpers and steps.
« Reply #43 on: November 14, 2016, 10:09:59 AM »
 Yes White was a enclosed and Autocar had the open style.
1941 White M2
1942 White M4A1 was M4
1942 Autocar M2A1
1942 Autocar M3-75
1943 White M13 rebuilt as M16
1943 Diamond T M3A1

Smadge

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Re: M2 rear bumpers and steps.
« Reply #44 on: November 14, 2016, 04:40:18 PM »
  Great! Thanks for the info.
1941 M2-232 Autocar (restoring)
MVPA Member