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Tube bender

Discussion in 'Center Of Gravity' started by berg76, Jan 12, 2004.

  1. berg76

    berg76 1/2 ton status

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    Does anyone have plans for a simple mandrel tube bender that can be made at home?? One that can use the most common sized dies for tubing rollcages and bumpers??
     
  2. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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  3. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    That's not a mandrel bender, it's another take on the JD2 style bender. Good luck on finding a mandrel bender that can be built at home...
     
  4. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    BTW, if your really interested in that type of bender (and not a mandrel type) then there are several people who have made AutoCad files of the JD2 pieces. IMO, that is a superior design (in some ways) to the floor model. The floor model is more easily portable and hydraulically driven. The JD2 style is floor mount (usually) and has better support for compound bends. It can also be manual or hydraulic.
     
  5. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    It is basically what he is looking for. /forums/images/graemlins/deal.gif
     
  6. Fubeca

    Fubeca 1/2 ton status

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    Where do you think one could find these drawings, I would love to try and build a model 3 type bender. /forums/images/graemlins/smile.gif
     
  7. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Seems like it was on PBB, good luck searching though. Try including DXF in the search string (extension for autocad).
     
  8. TxK5Blazer

    TxK5Blazer 1/2 ton status

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    could you use the JD2 bender to make a cage ....Jason
     
  9. berg76

    berg76 1/2 ton status

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    Thanks. Thats basically what im looking for. Hopefully I can get somthing built over the winter. /forums/images/graemlins/thumb.gif
     
  10. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    [ QUOTE ]
    could you use the JD2 bender to make a cage ....Jason

    [/ QUOTE ]

    Yup /forums/images/graemlins/thumb.gif
     
  11. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    I used one like a JD2 (mine's an NE5) to build mine with several more in the works if I can EVER find time...
     
  12. TxK5Blazer

    TxK5Blazer 1/2 ton status

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    what size dom tubing would make a good cage and what would I use to make my front bumper...Jason
     
  13. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    1.75" x .120 tube is a good choice for non-competition use on cages. A cage design is really important.

    On a bumper, go with the cheaper HREW tubing. You can also use it on the cage and it's not much of a difference if it is designed right.
     
  14. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Bubba's got it. Mine is 1.75 x 0.120 HREW bent on a 5.5 CLR. Only one thing I can think of to add. I can't stress enough just how important triangulation is to a good cage design. And add gussets on all critical joints. I built a miniature model of my cage to test it's rigidity in all planes for typical impact forces. Not only did this help me find points needing more support, it also gave me added insight into how it all would go together (I built the model exactly like I planned to build the cage).
     
  15. az-k5

    az-k5 1/2 ton status

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    Gusset and triangulate. Marv Springer found that out the hard way (bent a halo bar on the funbuggy). Look at race vehicles for ideas. Those extra little tubes are not for the cool factor, but a safety factor.
     
  16. TxK5Blazer

    TxK5Blazer 1/2 ton status

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    that sounds good but looking at the JD2 they don't have a die for that size tubing ....Jason
     
  17. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Sure they do, look again. I've got one in my shop that came from JD2...
     
  18. TxK5Blazer

    TxK5Blazer 1/2 ton status

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    the 1.75 is Inch and 3/4 right with .120 wall tubing ....Jason
     
  19. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Yep. I just checked and it's this one.

    10-2060 M3B Round Tube Die Set - 1 3/4" (5.5-180) .095" $200.00

    That's round tube, 1.75 Dia, 5.5 CLR, 180* and min wall 0.095 thick.
     
  20. TxK5Blazer

    TxK5Blazer 1/2 ton status

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    good deal say bad dog what other dies would be worth having also and I plan to purchase the tubing notcher unless there is another way to notch it....Jason
     

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