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Projects Northrop F5 Belly Tank Racer

Discussion in 'Traditional Hot Rods' started by Superlite, Feb 1, 2023.

  1. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    Excellent work on your tank. Looks great! I was planning on doing single pipe headers very similar to that. Looks so cool exiting the tank. Does the water tank like that limit drivetime as opposed to a radiator?
     
    chryslerfan55 likes this.
  2. Ned Ludd
    Joined: May 15, 2009
    Posts: 5,424

    Ned Ludd
    Member

    One way to do rear suspension with a proper amount of travel on a tank is to turn the engine and gearbox backwards, fit a 4x4 transfer box, and run a driveshaft back alongside to an offset rearend. The suspension itself could be exactly as on an early Ford.

    The seat is high because the driveline runs under it. If the driveline could be got to run under the driver's elbow it could be built a lot lower. Lay an inliner over at an angle?

    In both cases the rearend pumpkin would probably end up outside the tank envelope. That might even be something to work with, design-wise: imagine a quickchange hugging the side of the tank?
     
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  3. For a Belly Tank to be road worthy with suspension along with the ability to clear driveway crests and judder bars i can see it starting to look like a four wheel drive vehicle or what i see as Joe 90's car ! JW
     
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  4. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    Interested in doing an open driveshaft conversion between the trans and a rear end instead of a torque tube setup. From my research for the stock Ford 3 speed trans I have I'll need a 16 spline slip yoke Part # 21C-4841. I saw that part number might be able to be replaced and is the same as needed for the 16 spline gm powerglide (The splines are the same???). Can anyone confirm? I can't find that particular part number for the ford 3 speed, but I might be able to source the 16 spline GM powerglide slip yoke if it is indeed confirmed the same. IF it is confirmed the same then I have my roadmap to get the driveline put together. I'll order the powerglide slip yoke, get a custom shorty driveshaft made and mate that to a ford 9 inch rear.
     
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  5. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    Cool idea but I'm not trying to get too crazy lol... :D
     
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  6. 282doorUK
    Joined: Mar 6, 2015
    Posts: 515

    282doorUK

    I snapped this one at Pendine last year, maybe some ideas there for you.

    DSCF7762.JPG

    DSCF7763.JPG
     
  7. THE FRENCHTOWN FLYER
    Joined: Jun 6, 2007
    Posts: 5,961

    THE FRENCHTOWN FLYER
    Member
    from FRENCHTOWN

    You're off to a good start.
    I am surprised at the metal thickness of the tank - I would have thought thinner. Maybe because the A-10 is for close-in ground support it had to be impervious to small arms fire? At any rate it looks like a real chore to bisect one, especially if it was made of a high strength alloy.
    Will you be reattachingthe top with a flange around its perimeter? Maybe with Dzus fasteners??
    I like the idea of an inline six to fit inside.
     

    Attached Files:

  8. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    I burned through six 4" cutting wheels to get through the tank. More than i thought. It hasn't been the easiest to bisect at all but the sawzall has made it easier lol. I won't be using a flange. I'll be riveting small profile aluminum sheeting on the inside of the bottom half and using either flush or winged camlocs to secure the top to the bottom. Winged camlocs if i decide i don't want to have to use a tool to separate the two halves. Flush camlocs if i would rather have a completely smooth profile. The inside aluminum sheet that i'll be riveting on will also help to further keep the tanks shape while using next to no space as well as a very quick way to separate the two halves. I'll be hinging the halves so they can flip up as well.
     
  9. Marty Strode
    Joined: Apr 28, 2011
    Posts: 9,577

    Marty Strode
    Member

    This one being a race car, the water tank is the way to go. In your case, a radiator would be best, but with a flathead, you need lots of water and air supply to it, and hot air exit.
     
    Last edited: Feb 4, 2023
  10. Marty Strode
    Joined: Apr 28, 2011
    Posts: 9,577

    Marty Strode
    Member

    Now if you want something unique, this is another one I worked on. IMG_5751.JPG IMG_5757.JPG
     
    Last edited: Feb 4, 2023
  11. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,618

    Atwater Mike
    Member

    Marty. Just Marty!
     
  12. Bearing Burner
    Joined: Mar 2, 2009
    Posts: 1,197

    Bearing Burner
    Member
    from W. MA

    All of the belly tanks I have seen including mine had full or partial tubing hoops to give stiffness to upper tank half with Dzus fittings securing the top in place. My flathead powered belly tank had a
    large watertank behind engine. m\Must have held 15 gal.
     
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  13. Mr48chev
    Joined: Dec 28, 2007
    Posts: 35,522

    Mr48chev
    ALLIANCE MEMBER

    I'm thinking that that the Ford slip yoke was the same from 49 to somewhere in the early 60's.

    That is already an open drive transmission. The tail shaft may be too long for your plans though. You are going to loose several inches of valuable space with that long tail shaft but I don't know of a Ford side shift trans with that bolt pattern that is all that much shorter.
     
  14. jimmy six
    Joined: Mar 21, 2006
    Posts: 16,630

    jimmy six
    ALLIANCE MEMBER

    This similar to what Bill Burk did right after WWII. I believe he was the first one on the dry lakes to do it.
     
    Just Gary likes this.
  15. alanp561
    Joined: Oct 1, 2017
    Posts: 5,310

    alanp561
    ALLIANCE MEMBER

    o_O Okay, I'll do it! First, let me say that I'm awe struck, @Marty Strode. Were you and your friends bored and this the result of a beer and cocktail napkin planning session? Some friends and I built a complete nuclear powerhouse one afternoon using that same method. Do you mind telling us what this creation achieved?
     
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  16. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,618

    Atwater Mike
    Member

    F100 pickups had a side shift with a short bearing retainer, mainly just the gearbox. 3 speed, '53-'56 (at least, maybe more)
     
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  17. alanp561
    Joined: Oct 1, 2017
    Posts: 5,310

    alanp561
    ALLIANCE MEMBER

    In regard to your transmission; why not change over to an F1 trans? You would need the Mercury bell housing conversion for 8BA to 59AB and the trans would be shorter with an open drive. Your driveshaft shop will have the Powerglide slip yoke. You'll have to shorten the slip yoke 1 and 5/8" to keep from running into the speedometer drive gear. I called Mac VanPelt to get the dimension.

    Mercury bell housing
    [​IMG]

    F1 top loader open drive 1952-61 3 speed
    [​IMG][​IMG]
     
  18. 41 GMC K-18
    Joined: Jun 27, 2019
    Posts: 4,894

    41 GMC K-18
    ALLIANCE MEMBER

    I have posted these pictures before on another thread that deals with "lakesters".

    So this particular cool machine, isn't a true belly tanker, whether its a tank from a P-38 or the kick ass
    A-10 Warthog.
    But you have to admit, its styling and engineering is way beyond cool!

    But that being said, this is just some pure inspiration, for @Superlite as to how it was done back in the day.
    His results may vary!

    These shots were from the "GAS-UP" at Jack Mendenhall's family, private compound in Buellton California a number of years ago.

    Enjoy from Dennis.

    eddie miller Jr. reader board (2).JPG engine right side 2 (2).JPG IMG_0327 (2).JPG miller cockpit 2 (2).JPG miller drilled drums (2).JPG miller duel distributor (2).JPG miller left side (2).JPG miller reader board 2 (2).JPG miller right side cab (2).JPG miller shift and tach 2 (2).JPG miller shift and tach 1 (2).JPG pontiac flathead 6 banger (2).JPG IMG_0338 (2).JPG IMG_0334 (2).JPG miller on trailer (2).JPG eddie miller jr. Lakester (2).jpg
     
  19. Marty Strode
    Joined: Apr 28, 2011
    Posts: 9,577

    Marty Strode
    Member

    It was from the mind of Lonnie Gilbertson,I just did the cage and interior tin work. Lonnie won the AMBR twice in the 70's.
     
  20. THE FRENCHTOWN FLYER
    Joined: Jun 6, 2007
    Posts: 5,961

    THE FRENCHTOWN FLYER
    Member
    from FRENCHTOWN

    Bueno.That is exactly the way I would do it. With flush mounts.
     
    Last edited: Feb 4, 2023
  21. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    Thanks for this suggestion and pointing me in this direction. I just picked up this completely overhauled beauty... 1942-1952 F1... Should arrive to the house in a week or so. Since this will be a driver, this completely re-done trans will give me a lot of peace of mind. I hate being stranded lol. Also, no oil leaks to deal with as there are with the current 3 speed trans sitting in the shop. I like how there isn't that long tail shaft in this one. Thanks for pointing me in the right direction Alan s-l1600 (1).jpg s-l1600 (2).jpg s-l1600 (3).jpg s-l1600 (4).jpg s-l1600 (5).jpg s-l1600 (6).jpg s-l1600 (7).jpg s-l1600 (8).jpg s-l1600.jpg
     
    Last edited: Feb 4, 2023
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  22. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    Excellent share! It might not be a true belly tanker but I'll definitely admit that this is awesome. Very unique and great engineering overall
     
    41 GMC K-18 likes this.
  23. PackardV8
    Joined: Jun 7, 2007
    Posts: 1,306

    PackardV8
    Member

    For many years people have called me crazy, but man, I bow and realize I just didn't have the vision.

    jack vines
     
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  24. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    Picked up this Bellhousing adapter for the 8BA Flathead which is what I have. Everything should mate right up(hopefully lol) s-l1600 (9).jpg s-l1600 (10).jpg s-l1600 (11).jpg
     
    Last edited: Feb 4, 2023
  25. alanp561
    Joined: Oct 1, 2017
    Posts: 5,310

    alanp561
    ALLIANCE MEMBER

    There are two different starter plates, one for standard trans and one for automatic. The one for the automatic tilts the starter slightly and you don't want that one. Mac VanPelt at VanPelt Sales is a gold mine of information and has an incredible inventory of flathead parts. If you don't have a Ford Green Book, buy one. Another source is

    All Documents Indexed
    Parts Diagrams
    Ford_Green_Book_01.pdf
    Download
    Details
    Ford_Green_Book_02.pdf
    Download
    Details
    Ford_Green_Book_03.pdf
    Details
    Ford_Green_Book_04.pdf
    Download
    Details
    Ford_Green_Book_05.pdf
    Download
    Details
    Ford_Green_Book_06.pdf
    Download
    Details
    Ford_Green_Book_07.pdf
    Download
    Details
    Ford_Green_Book_08.pdf
    Download
    Details
    Ford_Green_Book_Index.pdf
    Download
    Details
    Display Num
    Powered by Phoca Download
    Details
    Ford_Green_Book_02
    File Size:
    7.13 MB
    Date:
    21 April 2015
     
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  26. 51504bat
    Joined: May 22, 2010
    Posts: 5,451

    51504bat
    ALLIANCE MEMBER

    Make sure you get the correct starter plate.
     
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  27. Marty Strode
    Joined: Apr 28, 2011
    Posts: 9,577

    Marty Strode
    Member

    With the engine and trans behind you, the side shift version would be easier to do shift linkage. IMG_7359.JPG
     
  28. Hot Rods Ta Hell
    Joined: Apr 20, 2008
    Posts: 4,753

    Hot Rods Ta Hell
    Member

    Cool project. Looks like a lot of fun and plenty of engineering challenges to navigate and conquer!
    I recognize the Torq-Set, Hi-Lok and Huck fasteners from when I worked in aerospace many decades ago. I'd retain them as a nod to the post war, military surplus tanks.
    I think a banjo (especially a quick change) would look right at home with the flatty.
    Consider placing some sort of shock absorbing suspension under the seat to reduce jarring and improve drivability. Big rigs and heavy equipment use air. Early motorcycles used coil springs...

    What are you going to register it as in Maryland to get away with no fenders, bumpers, etc?
     
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  29. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    The hardtail motorcycle I built has springs under the seat. Considering doing the same here, along with airing down the rear tires a bit. Keeping it simple. Not sure about registration yet lol i'll work on that when I get there.
     
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  30. Superlite
    Joined: Feb 1, 2023
    Posts: 99

    Superlite
    Member

    Agreed but I'll make this toploader work... I have a couple ideas
     

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