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Thread: Working on the bender

  1. #1
    Yo soy tu papa! Doug Krebs's Avatar
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    Working on the bender

    Had a couple things to figure out, but I'll finish it up on friday and hopefully bend some tube!





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  2. #2
    fbronco86
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    you better not be bending any of my tube! haha

  3. #3
    Yo soy tu papa! Doug Krebs's Avatar
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    You don't own it yet!
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  4. #4
    Mack84
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    Mike speaking: oh yeah i forgot about that hehe

  5. #5
    sideways again... redcagepatrol's Avatar
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    I like the way you had to stand on a 5 gallon bucket to take the pics...
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  6. #6
    Yo soy tu papa! Doug Krebs's Avatar
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    Originally posted by redcagepatrol
    I like the way you had to stand on a 5 gallon bucket to take the pics...
    I also had to hold my arms up in the air and point down! I think you were trying to look at my pee pee!
    1988 Blazer...RIP

  7. #7
    Mack84
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    this is mike again

    how are you going to brace this area. it looks like its going to be a weak point.
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  8. #8
    Yo soy tu papa! Doug Krebs's Avatar
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    I'm just going to leave it unwelded and not brace it at all

    With the swing arm being a lever the ram won't have to push but a couple hundred pounds. I'm still going to gusset that part though.
    1988 Blazer...RIP

  9. #9
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    The cylinder will be pushing a few thousand pounds.

  10. #10
    Yo soy tu papa! Doug Krebs's Avatar
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    Originally posted by eight
    The cylinder will be pushing a few thousand pounds.
    you really think so?? I was thinking max 1000 or 1500
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  11. #11
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    Well, they say a 2" cylinder is the minimum size that will work. Most pumps have a 2500 psi max pressure. So 3.14 * 1^2 * 2500 = 7850 lbs of force is about what it would take to bend somethin like a 2" .120" wall tube. And there's probably a reason the protools kit uses a 10 ton cylinder.

  12. #12
    Yo soy tu papa! Doug Krebs's Avatar
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    well I guess we'll see if my **** hole contraption works!
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  13. #13
    ^TAMOR NORTH^ Graystroke's Avatar
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    I don't think it's as simple as that. 7850lbs to bend .120" wall? what kind of moment arm are you using doug. I have know idea what is really going on in thise pics?

  14. #14
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    I was just figuring what the max pressure for a 2" bore cylinder would be because I hear that's the minimun, and I threw out the 2" .120" wall because that's probably more than most people will ever bend. If you want to figure bending moment it gets more complicated yes cause it changes with the angle of the cylinder and arm.

  15. #15
    Yo soy tu papa! Doug Krebs's Avatar
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    Think this should do it? Or should I get more creative
    1988 Blazer...RIP

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