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Mack-Phase Two

Discussion in 'Old Iron!' started by Truck Shop, Feb 3, 2019.

  1. Truck Shop

    Truck Shop Senior Member

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    New thread because the other became cluttered.

    The rails arrived Wednesday the 30th in at 4:00 pm. And so far the engine bay is cut in both rails
    and 98 holes drilled with a Hougen Mag drill. The rails were perfectly formed-right on the money
    each 30' long which will give me a 280" wheel base also right on the money. I should have them
    finished and painted by Thursday given the steering box mounting goes well. I pre-made all the
    crossmembers and those line up perfectly. So it should be a fairly quick bolt up with members,
    mounts, suspension and axles. I will post photos when frame is bolted together.

    Truck Shop
     
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  2. Truck Shop

    Truck Shop Senior Member

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    Some photos of the rails-not good photos though. I still have to manufacture a bracket for the steering box and finish the front radiator crossmember.

    Truck Shop

    001 (5).JPG 003 (4).JPG 002 (5).JPG
     
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  3. farmerlund

    farmerlund Senior Member

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    Look like a very interesting project. I must have missed the other thread. What year? what is it going to be? I look forward to following along.

    Steve

    Hey, I found it. Yep, that will be a cool one when finished. Carry on.
     
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  4. Tugger2

    Tugger2 Senior Member

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    What kind of material are the rails formed up from?
     
  5. Truck Shop

    Truck Shop Senior Member

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    Grade 80-80,000 lb tensile strength formed by HW Metals in Portland Or. Grade 80 is standard for truck rail. HW Metals can form rails up to 60' with tandem press brakes.

    Truck Shop
     
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  6. Junkyard

    Junkyard Senior Member

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    Looking good. Glad to see you’re keeping us in the loop!!
     
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  7. Crummy

    Crummy Senior Member

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    What are you going use to coat the frame?
     
  8. Tugger2

    Tugger2 Senior Member

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    Thats good looking work. Are you doing the layout for holes off by transfering off the old frame rails or from plans? I ask because i had shortened an 850 ford for a dump box last summer,i patterned the 4 saddles induvidually and measured the rest ,rather than wrestle the axle in twice . that was a bit of a challenge but came out well. Doing the whole frame looks daunting. Keep up the good work.
     
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  9. DMiller

    DMiller Senior Member

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    Looking Great TS!
     
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  10. Truck Shop

    Truck Shop Senior Member

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    I'm using some gloss black from Napa that's industrial paint. The layout for bolt holes is partly from old rails but some of it is new design. I changed out a right side rail on
    a 2001 Pete some years back total time was 16 hours start to finish using a blank PacCar rail. I like frame work I guess, I've lengthened 72 over the years. I made up and
    drilled all of the crossmembers before I ordered the rail, it all lines up.

    Truck Shop
     
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  11. Tugger2

    Tugger2 Senior Member

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    I take my hat off to you ,i havent done a lot of frame work so there s a lot of head scratching time when im doing it. Making holes fit is precise work.
     
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  12. DMiller

    DMiller Senior Member

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    Building gliders and changing mid 70s Frt Lnr rails or the early KW Aluminum Rails were a definite job security back in the day.
     
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  13. Truck Shop

    Truck Shop Senior Member

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    All the bolt holes that can be pre-done are finished and rails painted. Built a power steering gear mount that incorporates the bolts for the left rear engine mount.
    Installed the front frame horns, rear spring hangers and front cab mounts. Should get the crossmembers in and rear suspension mounts this week. Then build
    the mounts to frame horns to support original radiator crossmember.

    Truck Shop

    001 (6).JPG 002 (6).JPG 003 (5).JPG 004 (4).JPG
     
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  14. DMiller

    DMiller Senior Member

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    Going with a Ross or TRW Gear?
     
  15. Truck Shop

    Truck Shop Senior Member

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    Steering gear I'm using came off one of our wrecked 2013 Freightliner Coronados. TRW

    Truck Shop
     
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  16. RZucker

    RZucker Senior Member

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    Boy, I feel stupid. I just caught this update. Looking good. Worst part is I'm going to be in Clyde this weekend, but wont have time to get down to WW and see you.
     
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  17. Truck Shop

    Truck Shop Senior Member

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    The frame is darn near complete now. All crossmembers and rear suspension mounts are in, the only thing I'm working on right now is the radiator support.
    As soon as the snow clears away I will drag the springs, font axle and rear axle housings in and install. I will post some photos tomorrow.
    Clyde is a happening place.

    Truck Shop
     
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  18. RZucker

    RZucker Senior Member

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    Yeah, going to look at a new to us motorhome, Those drylanders keep that kind of stuff stored indoors. It looks really nice in the email pics. Not far from the old school house site.
     
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  19. Truck Shop

    Truck Shop Senior Member

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    001 (7).JPG 005 (4).JPG 003 (6).JPG 006 (3).JPG Ok crane operator you wanted some photos-assembled frame.

    Truck Shop
     
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  20. Truck Shop

    Truck Shop Senior Member

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    One more

    002 (7).JPG
     
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