Martin's VTR 1000 Adventure Sidecar Build

Discussion in 'Hacks' started by m_cliffhanger, Nov 4, 2016.

  1. RoundOz

    RoundOz Plenty of seasoning

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    Is there an advantage to that style of bender compared to the one I am more familiar with:

    [​IMG]
    #41
  2. m_cliffhanger

    m_cliffhanger Momentary Lapses of Reason

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    Thank you, both.
    I don't have any drawings, but I can take some pics and measurements. It will depend on the bottle jack that you will be using. The key is to make sure that the die can travel through the full length. On thicker tubing (1 1/2 x 0.120) I can only get about 87*, due to springback. But with a bit of fiddling, I can get the full 90*.
    You sure can get a lot of work done with the little guy.
    IMG_7320.jpg
    #42
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  3. High Octane

    High Octane Long timer

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    I'd like to see a few more pics of the bender. There are a few shop built one on the net, but seeing another is always useful. It will be a while before I build one but it is on the short list.
    Thanks.
    #43
  4. m_cliffhanger

    m_cliffhanger Momentary Lapses of Reason

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    HighOctane, I'll take some tomorrow.
    RoundOz, my apologies. I didn't read your question properly. I thought it was a statement. :doh
    This type of bender is meant for pipe, and will kink the tubing very easily. I have heard of it being used successfully, but with a number of modifications, and only on shallow bends. A proper die will maintain the integrity of the tube, and especially for a roll cage, I wouldn't take the chance.
    #44
  5. m_cliffhanger

    m_cliffhanger Momentary Lapses of Reason

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    Here are some dimensions:
    9 1/2 x 9 1/2 x 28 outside
    Die pin 12 1/2; follower pin 4 and 5 1/2 from bottom
    Top bolt 27
    Jack base to die 3 1/4
    The square tubing is 2 x 2x 0.125 and the pins are 1" cold rolled. The critical dimensions are the relationship between the die pin and follower pin. It has to be close enough for the tube to slide in, but closer together will give a tighter bend. You can see that I made a second setting for the smaller tubing. If I were to do it again, I would have several settings for the follower pin.
    Hope this makes sense. IMG_8396.jpg IMG_8397.jpg IMG_8398.jpg
    #45
  6. m_cliffhanger

    m_cliffhanger Momentary Lapses of Reason

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    You can see the forces involved. The top bolt is a grade 8, 1/2 in bolt. IMG_8400.jpg IMG_8401.jpg
    #46
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  7. High Octane

    High Octane Long timer

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    Thanks. Doesn't look too hard to build. It will be a while but when I get too it I might ping you for some more info.
    #47
  8. Strong Bad

    Strong Bad Former World's Foremost Authority

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    These days there are shops that specialize in CNC bending as well as CNC Laser notching. My youngest son has a welding job at a off road race car shop building chassis. The parts for the chassis comes in to the shop on a pallet with everything pre-bent and notched, the parts even have laser etched part numbers on each part!
    #48
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  9. Bobmws

    Bobmws Curmudgeon At Large

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    IKEA sells race chassis, who knew!
    #49
  10. m_cliffhanger

    m_cliffhanger Momentary Lapses of Reason

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    Yep, pretty neat stuff. Check out VR3 Engineering. I looked into them when I was planning on building a Bearhawk (tube and fabric fuselage). They take the plans and your platinum credit card, and voila, a few weeks later a box of perfect tubing. The problem with my builds are my CAD files. Somehow their CNC machine can't read my cereal box cut outs; amateurs. :imaposer
    #50
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  11. Strong Bad

    Strong Bad Former World's Foremost Authority

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    He's at Armada Engineering.

    Pallet O' Parts:
    [​IMG]

    Sewing it up:

    [​IMG]

    Solid connection:

    [​IMG]

    #51
  12. Strong Bad

    Strong Bad Former World's Foremost Authority

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    I believe these young guys are all using Solidworks for their design & CNC files. Solidworks allows stress analysis of the drawing.
    #52
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  13. bk brkr baker

    bk brkr baker Long timer

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    [​IMG]

    If we could get them to pre-bend and pre-notch the tubes for these , there would be High performance Sidecars for the masses.
    #53
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  14. Strong Bad

    Strong Bad Former World's Foremost Authority

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    Easy peasy, get your checkbook out and we can make that happen!!
    #54
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  15. Bobmws

    Bobmws Curmudgeon At Large

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    Sounds like an investment opportunity for davebig! :deal
    #55
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  16. bk brkr baker

    bk brkr baker Long timer

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    And , there's the rub.
    #56
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  17. Hookalatch

    Hookalatch Born Under Bad Sign

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    It almost seems a shame to take something that pretty out and beat the shit out of it.
    #57
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  18. davebig

    davebig Another Angry Hun !

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    There lies the trouble Mericans don't like to pay for that stuff ! They want to go see Jay or Claude and be told what they want to hear ! Then be Capt Merica (walter mitty) Though some of you actually pull it off !

    The Yankee engineering Bills built some interesting sidecars evidently no one wants to pay for one. I talked to Hannigan a couple times wondering if they retained enough parts or plans to build anymore of the Kawa based center hub rigs, but one has to talk to Mr's Hannigan and she won't return your calls or emails.
    Seems we are a Non Market for that sort of hardware.
    #58
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  19. bk brkr baker

    bk brkr baker Long timer

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    Too broad a brush , Dave.

    [​IMG]

    [​IMG]

    All 3 of these were bought and paid for by Americans. Of course they are a tiny percentage of sidecar owners who are a tiny percentage of motorcycle owners who are a fairly small percentage of vehicle users in America.
    Sure on sunny perfect days it seems bikes come out of the woodwork , but , in Winter how many do you see ?
    I get a somewhat perverse satisfaction of being the only guy out riding when it's below 50 degrees or when the roads are wet . Face it , as a nation , we have gotten soft and that is the greater problem.
    #59
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  20. cog8603

    cog8603 Been here awhile

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    I'm out there riding with you! 35 is my cutoff since I got my heated grips. that's on my 2-wheeler though. once I get my Concours/sidecar I'll be doing it with 3!
    #60