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Posted (edited)

Heres the start of my Mack build. Im using the monogram 26 AC Mack kit with some resin wheels from AITM. For starters I removed the leaf springs from the frame because the front will be lifted and the rear will be much heavier.

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Using a triangle file, I cut slots to put a metal rod through the chain drive.

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I also started putting the cab together

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Edited by Superpeterbilt
Posted

I've been looking forward to this Terry. I like what I see and those tires will look great! I'll be watching this for sure :D

Posted

Thanks Sam. Its shaping up to be an exciting project! Lots of research into this one. This chain drive is a different animal for me.

I will be replacing the moulded on chain and sprockets. Im using a Kyosho 1:8 motorcycle chain. I also got a set of the sprockets for the same bike so I could copy them. Im machinig a sprocket set out of .060 aluminum. Im making two different gear ratios, the other being for the second Mack Im going to build. If I didnt mention it already, the chain drive on this model will be fully functional.

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The chain is wrapped on the Kyosho sprockets

Posted

Here's some of the suspension work. I'm using the kit springs for the upper and the spring pack from the DM600 kit for the lower springs. They are not exactly the same shape, but it'll work.

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Here's the start of the end loops

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The small tube was glued inside the large tube. The large tube was then cut and coiled around the small tube. Then I filed a spot in the leaf springs and glued them on.

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I also made the radiator larger for the bigger engine. The hood will also be lengthened.

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Posted

I'm watching this one with interest. A couple of years back I did a Mack AP like the kind they used to construct Boulder (Hoover) Dam. Lots of interesting details on those old trucks like the springs inside the frame that acted as slack adjusters so stones would not bind up the chain drive. Nice work on this rig!

Posted

I'm watching this one with interest. A couple of years back I did a Mack AP like the kind they used to construct Boulder (Hoover) Dam. Lots of interesting details on those old trucks like the springs inside the frame that acted as slack adjusters so stones would not bind up the chain drive. Nice work on this rig!

Yes, these trucks are definitely some of the most interesting trucks ever built. I used to dislike the slanted nose, but it has grown on me. Dennis(Tesla) and I had been talking about these old Macks and I got the itch to tackle one. Id like to see your AP. Feel free to post it on this thread.
Posted

Wow!! That is quite an amazing build. That rear suspension looks superb. Most of what Im using for reference is the Iconographix Mack AP super duty book. There are many of the open cab dump trucks are in there.

Posted

That is part of what I have for reference info as well. Autocar A64B kit fenders are pretty close to the fenders used on these trucks. I turned mine around and did a bit of modification on them so I could attach them to the frame. The ones on the model are resin castings.

Posted (edited)

Thanks Gator, I'm glad you like it.

I started working on the front fenders. I used some fenders from a chopped up KW hood to add a rolled edge to the existing fenders. I still need to do a little work on them, but I'm happy with the progress.

Here are the KW fenders. I'm using the bottom side as the top. The pencil line is where I cut them.

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Before some enlarging of the wheel openings

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After some reshaping

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Edited by Superpeterbilt
Posted

Outstanding! nice to see someone tackle a "real" Mack,killer work so far,i will sure be tuned in for more updates!................................Mark

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