Tow bar rebuild, need a measurement

Quarter-ton trailer series, Wanted, USED PARTS FOR SALE NO EBAY or COMMERCIAL SALES., and Knowledge Base
Ian's M100
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Tow bar rebuild, need a measurement

Post by Ian's M100 » Thu Sep 27, 2012 9:00 pm

I am restoring an M100 and theA frame tow bar is part of the principle rebuild due to rotted out C channel and the previous owners in the past has bubbified the towbar tube. The original casting was cut out and lost to time and was replaced with a 3" square tube sticking out 9"beyound convergence of the c hchannels. Its a poor designed 9"drop to the 1 7/8' coupler. Basicaally I am building a new Aframe and tube. No dates or markings on this stuff so it's worth pennies per pound at the scrappers.
My question is what length should the distance be ahead of the a frame or the front panel to the coupler?









I
1956 CJ3b
New 1953 dunbar kapple m100
1951-2 Cdn m38 ( parts special for sale)


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Bill H.
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Re: Tow bar rebuild, need a measurement

Post by Bill H. » Fri Sep 28, 2012 6:49 am

Ian, check Jon Rogers' site. The M100 shares the same measurement as the WWII trailers. There is a round cut instead of a "V" cut on the drawbar channel reinforcement.
Bill H.

"Each shall seek his own kind, in other words, a bird may love a fish but where would they build a home together?" Tevye, Fiddler on the Roof

1952 Dunbar Kapple M100
1953 Willys M38A1
1962 AMC M422A1
1965 Stevens M416B1 X 2
1967 Kaiser M715

2 Timothy 3:1-5

Ian's M100
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Re: Tow bar rebuild, need a measurement

Post by Ian's M100 » Sat Sep 29, 2012 4:08 am

Ok, i have done a search for the Jon Rogers site and have not come up with the answer. Can you provide the url to point me in the right direction. Or best yet, what is that measurement?
1956 CJ3b
New 1953 dunbar kapple m100
1951-2 Cdn m38 ( parts special for sale)

resqrk
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Re: Tow bar rebuild, need a measurement

Post by resqrk » Sat Sep 29, 2012 5:26 am

Where are you located? I have an M100 for sale cheap.... tub bad but frame is good

Ian's M100
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Re: Tow bar rebuild, need a measurement

Post by Ian's M100 » Sat Sep 29, 2012 8:01 am

:!: :D Thanks for the offer but I'm in Eastern Canada and having enough "fun" with one trailer right now.

:!: :idea: Now if someone can send that measurement in the next hour great! Because in 2 hrs. I going to "Bring the Noise!" with fabricating a new A frame. :wink:
1956 CJ3b
New 1953 dunbar kapple m100
1951-2 Cdn m38 ( parts special for sale)

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Bill H.
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Re: Tow bar rebuild, need a measurement

Post by Bill H. » Sat Sep 29, 2012 9:57 am

Ian, Jon is a moderator on this site. His site URL is http://jeepdraw.com/Willys_MBT.html" onclick="window.open(this.href);return false; Contact Jon and he will be more than happy to help you will all you need. He made his and most of his trailer from scratch.
Bill H.

"Each shall seek his own kind, in other words, a bird may love a fish but where would they build a home together?" Tevye, Fiddler on the Roof

1952 Dunbar Kapple M100
1953 Willys M38A1
1962 AMC M422A1
1965 Stevens M416B1 X 2
1967 Kaiser M715

2 Timothy 3:1-5

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Jon
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Re: Tow bar rebuild, need a measurement

Post by Jon » Sat Sep 29, 2012 12:50 pm

Sorry I missed this post.....

The M100 A Frame is similar, but as pointed out different in so much as the cut out on the reinforcing insert.
Below are the A frame rails built by Dale, also a pic of the M100 A-frame reinforcing rails.
I built my A-frames too and they fit.
As for the distance out......It's not possible for me to give you that answer at the moment as mine is stripped down, however, if the rails are made to the correct length, they will meet up with the casting at the correct angle and be attached to the casting.
It appears that the casting is the same or similar to the MBT or T3.
Drawings are here...... http://www.jeepdraw.com/trailer.htm" onclick="window.open(this.href);return false;
See....... Willys MBT, Bantam Trailer A-Frame Braces and Reinforcing Inserts (Pics on JeepDraw Home Page) MBT-A-FM.pdf
Pic of the inserts I made.
Image

Hey Bill.......remember the fun we had after I made the handbrake lever, laying it up against originals to see if anyone could pick it was a home made thing ?
Those were the days mate


JR
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Img_0392.jpg
Img_0392.jpg (133.54 KiB) Viewed 1488 times
A-frame-02.jpg
A-frame-02.jpg (38 KiB) Viewed 1489 times
M100.gif
M100.gif (111.96 KiB) Viewed 1489 times
Jon Rogers
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http://jeepdraw.com JeepDraw Home Page & Drawings
Parts Colours Page http://jeepdraw.com/PART_COLOURS.htm
1944 GPW195611 20531384 ACM-2 17781
1942 MBT 19433W

Marty, SoCal
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Re: Tow bar rebuild, need a measurement

Post by Marty, SoCal » Sun Sep 30, 2012 5:44 am

Ian's M100,
The drawbars on my '53 Dunbar Kapple M100 stick out past the front angle 20-5/8", on the inside surface. The end of the inner reinforcement has a hemispherical cutout, like in the original M100 pic Jon posted, the size is 1-3/4 diameter. There are also a set of eight small holes for #12 machine screws in the top and bottom and inside rail surfaces of each rail for the wiring brackets that are not there on a MBT rail. The two (each) top and bottom holes are in line 4" apart, 1" in from the outer edge of each rail, starting 9" back from the inner front edge of the rail, (same spacing top and bottom as the rails interchange side to side). The four holes inside the frame rails are arranged in a rectangle 8-1/4" by 2", starting 8" back from the inside of the front rail. The rails are 3" tall, so these holes end up being 1/2" from the edges.

Hope this helps!

Jon,
Can you post some pics of the machines and tools you use to make such perfect parts! Maybe start a new post? I'd love to see your shop setup!
43 Ford GPW 92098
53 Dunbar Kapple M100
Sold: 61 CJ-5, 41 T207 WC-1 Dodge closed cab pickup
MVPA #8266
USMC Tanker (1811, 1812), 85-93
ASE Automotive Master tech, former Chrysler-Jeep Level 4 Mastertech, CA state EA smog license

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Bill H.
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Re: Tow bar rebuild, need a measurement

Post by Bill H. » Sun Sep 30, 2012 9:27 am

Jon, I do remember. I wonder where it is now??? :wink: :lol: Do you remember what the number was that got it? Those were and are good times! There are more to come!
Bill H.

"Each shall seek his own kind, in other words, a bird may love a fish but where would they build a home together?" Tevye, Fiddler on the Roof

1952 Dunbar Kapple M100
1953 Willys M38A1
1962 AMC M422A1
1965 Stevens M416B1 X 2
1967 Kaiser M715

2 Timothy 3:1-5

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Jon
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Re: Tow bar rebuild, need a measurement

Post by Jon » Sun Sep 30, 2012 12:06 pm

No. sorry Bill, can't remember who got it......

Here's a pic of that measurement of what I think you needed.
From the edge of the front L cross member to the center of the pivot....

Hope it helps.....
Cheers
Jon
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Jon Rogers
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http://jeepdraw.com JeepDraw Home Page & Drawings
Parts Colours Page http://jeepdraw.com/PART_COLOURS.htm
1944 GPW195611 20531384 ACM-2 17781
1942 MBT 19433W

Ian's M100
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Re: Tow bar rebuild, need a measurement

Post by Ian's M100 » Sun Sep 30, 2012 6:44 pm

Jon,
That's exactly the measurement I have been asking for!!!! :D Now I can begin the fabrication.

Marty,
That was an answer! Plus more info I hadn't thought of. Glad you provided this as the PO's just electric taped the harness in place.

Thanks to both of you.
1956 CJ3b
New 1953 dunbar kapple m100
1951-2 Cdn m38 ( parts special for sale)

Ian's M100
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Re: Tow bar rebuild, need a measurement

Post by Ian's M100 » Sat Oct 13, 2012 5:59 pm

Well, I have started the fabrication of the new towbar and having a heck of a time trying to get it even. The fun of building a towbar while the frame lies 40 miles away, and one side rail removed. After musch consternation and thought towards safety my trailer when complete will be riding on a totally new frame as original too risky to haul anything more than a bale of straw. The suspension brackets, hangers have all been sand blasted , primed with a thick epoxy primer, OD green in colour of course and new gusset plates fabbed to tie the side rails to cross beams.
Next job is copying all the holes over to new frame and begin assembly.
Question I have is where are the s/n numbers on the frame ? i have looked but they seemed to have diasppeared with time and I can't find the post with the details as to the exact location.
1956 CJ3b
New 1953 dunbar kapple m100
1951-2 Cdn m38 ( parts special for sale)

Marty, SoCal
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Re: Tow bar rebuild, need a measurement

Post by Marty, SoCal » Sun Oct 14, 2012 5:35 am

I couldn't find any serial number on my frame. No ACM number on the M100 like on a WW2 trailer, either. Pretty sure the only number is on the data plate.
43 Ford GPW 92098
53 Dunbar Kapple M100
Sold: 61 CJ-5, 41 T207 WC-1 Dodge closed cab pickup
MVPA #8266
USMC Tanker (1811, 1812), 85-93
ASE Automotive Master tech, former Chrysler-Jeep Level 4 Mastertech, CA state EA smog license

Ian's M100
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Re: Tow bar rebuild, need a measurement

Post by Ian's M100 » Sun Oct 14, 2012 3:22 pm

I am in need of a spring shakle mount for the right rear, Anyone have a spare? Or is there any "easy" repair to replace the threaded pipe section as time and water has eaten away the bottom section to paper thin exposing the threaded bushing thats seized in .
1956 CJ3b
New 1953 dunbar kapple m100
1951-2 Cdn m38 ( parts special for sale)

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Jon
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Re: Tow bar rebuild, need a measurement

Post by Jon » Sun Oct 14, 2012 3:51 pm

It's possible to remove the threaded part from an ordinary spring shackle and replace it .
Image
After all, you'll need to remove the old one.........

Just a thought.

JR
Jon Rogers
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http://jeepdraw.com JeepDraw Home Page & Drawings
Parts Colours Page http://jeepdraw.com/PART_COLOURS.htm
1944 GPW195611 20531384 ACM-2 17781
1942 MBT 19433W


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