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1978 Overnight Mack U Model


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This one will be based on the DM 600 kit with a few donations from the Mack R Model kit. Decals from modeltruckin.com.

Here is the inspiration truck:

40256157090_d5510cae1b_k.jpgIMG_8544 by Brian Smith, on Flickr

 

The first order of business is to correct the hood and cab:

45137019202_0da3f3fe03_k.jpgIMG_2382 by Brian Smith, on Flickr

 

44275303495_e00c1e02ed_k.jpgIMG_2463 by Brian Smith, on Flickr

 

Shorten the frame:

43372193560_3d3b4245f0_k.jpgIMG_2380 by Brian Smith, on Flickr

45186069851_3e68af3c9c_k.jpgIMG_2468 by Brian Smith, on Flickr

 

45186114341_447ded48a2_k.jpgIMG_2465 by Brian Smith, on Flickr

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11 hours ago, landman said:

Brian, at the risk of me looking stupid, please explain the differences you are working to achieve.

Pat, the kit hood is notched and should go straight down on the drivers side, so I cut the cab straight and added the piece to the hood.

Here's one I built 20 years ago out of the box where you can see the notch.

33246069525_430cb30ebb_k.jpg100_0829 by Brian Smith, on Flickr

Here's how t is supposed to look.

5bbea908a94c7_macku.jpg.d1c81b3e49ccf6d555195c038e0ed80c.jpg

Mine's not perfect, but I thought that I would try to correct this one.

Edited by DRIPTROIT 71
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7 hours ago, Jim B said:

Is that just on the U-model or the DM as well?  I'm guessing the DM, too, because it's the same cab & hood.

Both the U and the DM 600 fiberglass hood have the same line. The DM 800 and DM 600 steel hood have a filler that creates the notch. I've been told that the original release of the DM 600 was cut right, but had gotten changed with the release of the DM 800. Whether that is true or not, I do not know. It looks like it would have been easier for MPC just to add a filler panel than change the whole cab.

5bbf2c53d6667_mack2.jpg.2c788ff2d6f76a365874853af6ec2ff2.jpg

mack3.jpg.9a016265e2860d0359a4f1916f2ba0b2.jpg

 

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As is always the case I look forward to seeing your progress on this project. I would like to share that the U series Mack is a combination of the R chassis with the DM cab and a unique hood , although it looks the same as the DM it is shorter. BBC of the U is 90in and DM is 101in. As a side note the cab shells were changed slightly in around 73. Back wall was deeper and more rounded ( compare the DM kit and AMT R kit cabs) and the dash was changed up.

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1 hour ago, PettyKW43 said:

As is always the case I look forward to seeing your progress on this project. I would like to share that the U series Mack is a combination of the R chassis with the DM cab and a unique hood , although it looks the same as the DM it is shorter. BBC of the U is 90in and DM is 101in. As a side note the cab shells were changed slightly in around 73. Back wall was deeper and more rounded ( compare the DM kit and AMT R kit cabs) and the dash was changed up.

Thanks Richard!

The difference in the BBC is in the bumper on the DM as compared to the U. The bumper sticks out farther causing the Bumper to Back of Cab measurement to be longer on the DM than it is on the U model. The MPC cab appears to be 90.6" in scale so it's all good. Although Mack introduced rounded cab around 73 the flat back cab was still offered for some time. The 78 that I'm depicting had the straight back cab. I have seen at least two 78 models with straight back cabs. This one will have the newer dash from the AMT kit too.

42063878521_861e2b6e0a_k.jpgIMG_8579 by Brian Smith, on Flickr

Edited by DRIPTROIT 71
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On the chassis, the rear is completely changed for the single axle, the front springs were modified (several leaves removed) to closer resemble the U model, but I did however keep the beefier frame rails just because it made things a little simpler. I don't think that it will be that noticeable when finished though.:D

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Hey Brian, I was looking at my old Mack literature last night and you know it’s funny how I have looked at it before many times and I never noticed the bumper sticking out on the drawing showing dimensions, I hate putting out wrong information about stuff! Definitely the same body on both trucks, and definitely not the same chassis. Going to be a great build no matter!

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  • 4 weeks later...

Thanks for the comments guys!

I've been working on this a little along. The blue is a little lighter than I thought that it would be, but since the door decals are almost purple looking (which I didn't notice until it was against the grey background) it will be okay.

I added window rubber to the windshield and rear glass.

44829265785_1934885163_k.jpgIMG_2841 by Brian Smith, on Flickr

 

45692920422_7abf0f4f61_k.jpgIMG_2840 by Brian Smith, on Flickr

 

43571425810_d90ee8a306_k.jpgIMG_2547 by Brian Smith, on Flickr

 

43925513430_7ed21201e8_k.jpgIMG_E2794 by Brian Smith, on Flickr

 

44829256965_eb6fef465d_k.jpgIMG_E2795 by Brian Smith, on Flickr

 

44829259275_836da413f3_k.jpgIMG_E2796 by Brian Smith, on Flickr

 

45018244194_63f207d3c6_k.jpgIMG_3108 by Brian Smith, on Flickr

 

43925524520_a771cd2761_k.jpgIMG_3109 by Brian Smith, on Flickr

 

44829276795_f31f3c76a7_k.jpgIMG_3110 by Brian Smith, on Flickr

 

 

 

 

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