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A trailer for the GMC - DONE


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I have three tractors and no trailers. I mean built trailers. A while back I built a GMC B-7000 which some of you may remember.

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This is a photo of the real thing. I'll try and build something like this , two axles, beaver tail and fixed, narrow gooseneck.

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Edited by landman
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I had bought a pile of trailer parts on eBay. there is enough there to make this trailer.

 

Started by cutting off the gooseneck.


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Then I narrowed it. I took off about the width of the king pin plate. Should I narrow it some more like about the width of the plate plus the side rails or is it good like this?


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Edited by landman
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OK, I need help here. This is the AMT lowboy suspension. Is there any way I can cut this and make a two axle which would remain plausible? If not, I'm open to suggestions as to an alternative including resin items.


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Edited by landman
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I know how I'd do it for a modern truck build but don't think for the era of what your building it would work.... Thinking, cutting the spring/center section out, bring them together add a knuckle in between so they pivot and add air bags on a center cross member in place of the spring...... Not sure if that would work for the era though!!??

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I'm not familiar with that set up, but geometrically speaking, I think that if you remove the end with the extra bars and mount the end of the springs to the trailer frame, leaving the tip of that rear beam attached to the spring and fabricating some brackets to make it appear to pivot like the end of most springs, and I believe that it would represent one that would function. I'm not sure what the suspension would have been in that era on that trailer, but I'm pretty sure with your fabricating skills that you can pull something off with what you have.

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Recentered the inter-wheel supports and trimmed rear deck plate to fit.


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Trimmed some deck plate to fit the gooseneck.


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Added corrugated plate to the beaver tail.


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I remember the trailer being pulled up to the fifth wheel with the winch. Made up a D-ring attachment for the front.


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Edited by landman
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1 hour ago, gotnitro? said:

Kj doesn't list the outrigger but can supply you with them, I just picked some up at recent show

The trailer is coming out fantastic 

Here is his response: 

Hi Pat,

Unfortunately I do not have molds for those parts anymore. I think Jamie over at Moluminum makes outriggers and D-rings though.

-KJ

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On 12/22/2017 at 12:34 PM, landman said:

looking at the wood decking, I have some balsa which translates to 2X6. The "woodgrained" original plastic decking shows closer to 2X10. Which is more plausible?

Don't use balsa wood!  It will dry out and warp over time. If you want to use real wood use basswood. It is a bit sturdier and will not warp. 

If you want to use the kit plastic wood, I have a woodgraining tutorial I can email you. PM me your email addy if you want it. 

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