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  1. #76

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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)



    Gorgeous looking truck Brice.  Make sure you hire an armed guard for this one though; I for one don't want to see any more of your projects vanishing...! 


  2. #77

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    Jan 2004
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    Los Altos Hills, CA
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    So I never got around to posting gearbox pics. The gearbox is made up of 15 gears and four clutches. Each track can independently be shifted proportionally from forward to neutral to reverse. What this means is that the shifting is done with clutch plates and by design is a soft gradual shift. It's not on or off. This show allow for smooth controls.

    Here is a video of the gear box in action from forward to reverse.

    http://www.youtube.com/watch?v=OVRBeCuj4PY

    Here are all the parts in the gearbox







    This is the input gear/gearbox cover



    These are the shifter mechanisms. Basically the shifter is an acme screw that is coupled to a shifting gear. The gear has clutch plates and moves between a forward powered gear and a reverse powered gear.



    This is the powered reverse gear assembly





    This is the differential assemble that generates forward and reverse gear motion from the input gear.





    Here are the output and forward powered gears installed in the case halves



    Here is the gearbox almost ready to get bolted together



    The shifter assembly installed onto the gearbox



    The complete gearbox

    Owner and Operator of Baja Skunkworks

  3. #78

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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Just did a weigh in today and it came in at 76 lbs. This is what I expected. So I think it's safe to say that this is the worlds heaviest baja if you can still call it a baja.

    To offset it I also just finished building what I believe to be the worlds lightest baja at 11lbs-14.5oz

    Owner and Operator of Baja Skunkworks

  4. #79
    snoking16's Avatar
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    OMG
    My Beer Team has a Racing Problem

  5. #80
    Monsterman--HBF's Avatar
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Brice

    You never stop amazing me man! Your ideas and builds are by far the baddest and the sickest out there! You are for sure a Mad Scientist :lol:
    Chris
    Hpi Baja Modded Hpi Baja 5T Modded OBR Powered Monsterman/OBR SS Super Sport LR
    Hpi R40 OS18 x3 Hpi R40 OS26c x2 Hpi RS4 3 Evo x5 21 powered BIG BLOCK

  6. #81

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    Jan 2004
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    Los Altos Hills, CA
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Thanks for the kind words guys. I got some footage today. We will try and get a teaser video up in the next day.
    Owner and Operator of Baja Skunkworks

  7. #82

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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    can i ask you a serious question?

    when you arent playing with toys are you a rocket scientist?



    amazing..

  8. #83

    Join Date
    Jan 2004
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Ok guys here is a teaser video. First run proved to be promising. There are a couple of bugs that I still need to work out.

    1. The receiver I used is a cheapie FM receiver. It was very susceptible to RF noise coming from the ending. This caused the servos to go crazy and made it very difficult to control. I will be upgrading the receiver to a DSM 2.4 Ghz system.

    2. I didn't use loctite on the track bearings so I started to lose screws and bearing towards the end of the trial run.

    Enjoy.

    http://www.youtube.com/watch?v=rANs8Ll0hf4
    Owner and Operator of Baja Skunkworks

  9. #84
    DarkFire989's Avatar
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Looks good brice. It did seem kinda wacky in the vid.
    Clod Buster | Sludge Hammer | Blue Streak | Revo | Baja | CR-01 | FG MT

  10. #85

    Join Date
    Jan 2004
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Yep, the servos literally had a mind of their own moving back and forth non-stop.
    Owner and Operator of Baja Skunkworks

  11. #86
    DarkFire989's Avatar
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Hows the engine doing? Does it struggle at all?
    Clod Buster | Sludge Hammer | Blue Streak | Revo | Baja | CR-01 | FG MT

  12. #87

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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    Nope the engine is a powerhouse and it's geared perfectly. When the servos randomly engaged the clutches the tank would rear up on it's end. Lot's of torque. It reminded me of the ripsaw videos.

    You figure these motors have been used on go-peds to get a 200 lb person up to 60 mph so it shouldn't have any problems with my little tank.
    Owner and Operator of Baja Skunkworks

  13. #88

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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    my brain hurts

  14. #89
    Nitro Fumes's Avatar
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    RE: Home Built Baja 5T-PTV (Personal Tracked Vehicle)

    That's a fantastic project! You sure have done a lot of work. But how are you going to make it steer? Are putting a differential brake system with a brake on each rear "wheel"?
    If it hasn\'t got 4 wheels, makes a damn hell lot of noise, it\'s of no concern to me.


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