Search:

Type: Posts; User: daliad100

Page 1 of 20 1 2 3 4

Search: Search took 0.04 seconds.

  1. Replies
    10
    Views
    2,954

    I'll take them off your hands.

    I'll take them off your hands.
  2. Replies
    9
    Views
    2,458

    If you can set up some sort of brake press style...

    If you can set up some sort of brake press style thing then you can try bending it a bit, move it a bit, bend some more etc. until you reach the desired curve.
  3. Replies
    5
    Views
    2,278

    I'm pretty it was essentially two, two wheel...

    I'm pretty it was essentially two, two wheel drive robots attached by a 3dof hinge to allow each part to pitch, yaw and roll independently of each other.

    Very useful for keeping as many wheels on...
  4. Replies
    9
    Views
    2,698

    From experience it will hold up repeated bashing...

    From experience it will hold up repeated bashing into a brick wall but not to a hammer which punched neat-ish circles out of it.

    Only a couple of mm thick though so in the 10+mm thickness you'll...
  5. Thread: Team Bitza

    by daliad100
    Replies
    189
    Views
    33,522

    http://www.totalinsanity.net/tut/mechanical/4barfr...

    http://www.totalinsanity.net/tut/mechanical/4barfrontbar.php - Finds the torque to hold a load at each point in the travel of your lifter, find the maximum and spec a bigger motor so it will actually...
  6. Replies
    17
    Views
    6,761

    3751 Click here...

    3751
    Click here for the full sized image
    search www.gbone1.force9.co.uk* in the wayback machine for all the pages it has because the navigation on the archived ones is mostly broken
  7. Replies
    494
    Views
    91,011

    Good tool path generation algorithm (which we...

    Good tool path generation algorithm (which we unfortunately have to pay for)

    Essentially they use the side of the end mill to take off lots of material at once and step inwards and upwards from...
  8. Replies
    5
    Views
    2,433

    Downloaded some old US army textbooks on various...

    Downloaded some old US army textbooks on various workshop things from here.

    The first one has 70 odd pages of lathe information starting around page 110 or so and should be a good primer on...
  9. Replies
    9
    Views
    2,377

    Schottky diodes have low forwards voltage drop...

    Schottky diodes have low forwards voltage drop and high current capacity.

    Buy some that can handle your battery voltage in reverse and can carry at least the continuous current of the lifter...
  10. Centre of gravity as far below the centre of the...

    Centre of gravity as far below the centre of the hoop as you can get it so it will actually work and a stiff material so it maintains shape.

    As for shape you'll want to make sure that when the...
  11. Replies
    112
    Views
    21,138

    If you keep the mass of the ram and spike down...

    If you keep the mass of the ram and spike down and move it very fast (low moving mass + high flow rate) then you have a chance of stabbing through something.

    As mass of the spike is <<< robot mass...
  12. Replies
    190
    Views
    36,455

    Drill motor shafts are 3/8 UNF which will...

    Drill motor shafts are 3/8 UNF which will correspond to bore.
    The tapped hole(s) are for locking the gear to the shaft via grub screws, make as big as possible without removing too much material...
  13. Replies
    93
    Views
    20,125

    Eleven made a good start...

    Eleven made a good start, very slow though.
    Mark Setrakian's Mechadon and Snake also managed to move but both were pretty much instantly shoved around.

    ?
  14. Replies
    93
    Views
    20,125

    That's technically a walker. Two four bar...

    That's technically a walker. Two four bar linkages in each leg with 1 DOF each in different planes.

    Inchworm drive would also count. As for walkers that satisfy these rules and have won a fight, I...
  15. Replies
    93
    Views
    20,125

    It would, just don't ask anything more...

    It would, just don't ask anything more complicated than that as the general formula confuses me :?
  16. Replies
    93
    Views
    20,125

    3634 From what I understand about the linkage,...

    3634

    From what I understand about the linkage, it has 5 bars and the background making for 6 bodies, 7 single DOF joints and no 2 DOF joints making for only 1 DOF total.

    Hence not a walker by...
  17. Replies
    93
    Views
    20,125

    For degrees of freedom of a planar mechanism...

    For degrees of freedom of a planar mechanism (flat) the Grübler formula:

    DOF = 3(n - 1) - 2l1 -l2

    Where n = number of bodies (number of links including sliders)
    l1 = number of joints with 1...
  18. Replies
    77
    Views
    23,944

    Well, this draw does not look good for me but...

    Well, this draw does not look good for me but tictacs anyway:

    Lime-y vs Munch - despite running lower voltage, some back of the envelope maths says I will accelerate faster and have only a little...
  19. Replies
    11
    Views
    3,334

    Recently took apart a pressure washer made from...

    Recently took apart a pressure washer made from polypropylene, took several smashes into a brick wall to break after sawing all the way around the seam didn't open the case.

    I then applied hammer...
  20. Thread: DIY ESC

    by daliad100
    Replies
    4
    Views
    1,940

    Re: DIY ESC

    LM339 works anywhere between 2V and 30V and the mosfets will still saturate so it should still work

    You can leave out the feedback (like hacking a servo) so it will run 360.
  21. Replies
    56
    Views
    7,898

    Re: Massacre - FW

    http://hobbyking.com/hobbyking/store/catalog/e-switch.jpg

    Follow the diagram making load the relay coils. Put coils in series if switching voltage > 1/2 battery voltage or in parallel if switching...
  22. Replies
    157
    Views
    27,197

    Re: Pulverizer Build Diary

    Look up arduino as isp, never done it myself but should do what you want.
  23. Thread: Team MedBots

    by daliad100
    Replies
    414
    Views
    84,521

    Re: Team MedBots

    Who needs app's when you have calculator :)

    Pitch circle diameter = MOD * No of teeth

    therefore

    Spacing = MOD/2 (N1 + N2) where N1 and N2 are the number of teeth on each gear
  24. Replies
    46
    Views
    14,970

    Re: Antweight Kit

    Been meaning to get back into robots and came up with this body shell to get my eye back in.

    Man these things are small.

    [attachment=1:1o4oomh7]IMAG0130.jpg[/attachment:1o4oomh7]

    All of the...
  25. Replies
    46
    Views
    14,970

    Re: Antweight Kit

    You could try getting some kit's laser cut. More assembly and design required but should be cheaper as you might be able to squeeze many robots on one sheet of material and set up costs should be...
Results 1 to 25 of 482
Page 1 of 20 1 2 3 4