M2 rear bumpers and steps.

[bright87]

Hey guys-
Does anyone have any measurements for the rear steps and bumper for a M2? Building mine from scratch and only have a few pictures to go off of.
Any help will be appreciated.
-Michael

[steve1973]

Mine are currently off. I can get some photos and measurements this weekend.

Steve A.

[47lincsled]

 I had the brackets but not the diamond plate step, so I had a local metal shop cut and bend them out of aluminum, since I have rear luggage racks no one is going to be able to step on them,I had them made to 26 inches long, 7 1/2 wide with a one inch lip, they fit my brackets perfectly. If you would like a picture let me know. Bob.

[bright87]

Steve- Did you ever get those measurements and pictures? Especially the brackets.
Bob- Yes-pictures would be great!

[47lincsled]

 Here are the pictures, I'll try to get out tomorrow and draw a sketch and get some dimensions, we've got sustained winds of 40 right now and it's been blowing all day, all I know for sure is they are 26 inches wide, the bumper is pretty basic it's 6 inches tall and 2 deep.

[Monkeypirate]

There is diagrams of the rear steeps in the file from Bob.  the only problem is that it doesn't show where to bend the step at or what gauge the steel is. Its listed as "gillard.dwg". You will need to download a program to view the files though. I think adobe might open it.  If your interested I can try to convert it to a work sheet using my CAD.

[bright87]

Thanks for the photos Bob!!

[47lincsled]

Do you need measurement on the whole step assembly or just the top piece of diamond plate?

[bright87]

The whole assembly- I think i can already make the diamond plate step and bumper channel, but i need the rest of it.
Thanks-Michael

[47lincsled]

 I'm not a draftsman so I hope between the picture and this drawing you can figure out how these are built!

[BombFarm]

I too need help with the rear bumper assembly. I have recently been able to read Bobs drawings, and have been taking his beautiful CAD work and started the task of "dumbing" it down a bit by handwriting it out in a way that I can use it more effectively for my garage based technology.
My main problem is that I think there are some errors in the material thicknesses that are noted for some parts. In fact he calls for 1/4" plate on all major bumper parts that he includes in the file.(bumper parts that are not included in the "gillard.dwg" file include: top diamond plate tread step, and a small channel bracket that connects the lowest inboard portion on the bumper directly to the chassis frame)

From examining photos I would agree that the following pieces are all made of 1/4"material:
-triangular side
-2.5" flat bar "J"-bracket that supports inboard portion of tread step.
-lower chassis to bumper support strut (the small piece of channel that connects the the inboard/lowest part of the bumper directly to the frame)

The following are confirmed 10ga parts:
-tread step (Diamond plate)
-trailer plug bracket and B.O. light brackets

Now I believe the following are made of thinner materials as we'll; possibly 10ga. Or 3/16" at most:
-main back plate of the whole bumper that has "S" bend
-rear facing bumper channel (the part were you typically see with unit nomenclature painted)

So, can I beg for someone with original steps to help me confirm the thickness on materials in question?
Thanks in advance for you time.

Martin J.

[47lincsled]

sorry about the measurements, it was really nasty when I shot those pictures. The big back piece is .0205 and the bumper is .020, so 3/16 stock would be about right, I left out a support bracket, between the rear frame cross member and the bumper assembly, mine aren't installed right now,I'll have to dig them out and shoot a picture. Bob.

[BombFarm]

Thanks a bunch for the help Bob. That was just the information I needed.
No apologies needed, I would have just stayed inside.

[steve1973]

Hello all, I've been busy getting Don's and my track ready for Tower Park. It's over now. After I wash down my track tomorrow I will see what I can do about bumper measurements. My apologizes for the long delay.

One thing I vaguely remember is that there are two rear bumper styles. One with the solid end triangle piece and one with open end. White and Autocar were the only ones making the M2 variant so my guess is that White had the enclosed end and Autocar had the open end. Can someone verify this? Also the lower rear step support, there were two types. I have the later one and I'm trying to get photos of the earlier ones. The last M2 on Government Liquidations has those early supports. 

Steve A.

[47lincsled]

 Here are the braces, they are 8 inches long,4 1/2 wide and 1 1/2 inches deep,all measurement are outside the box, hopefully the square will give you a good idea of measurements.