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3D-print at low costs - this time a Pitbull

Discussion in 'Life, the Universe and Everything' started by Jamira, Oct 5, 2017.

  1. Jamira

    Jamira Samurai Girl

    Before I start to print thousands of parts for the complete undercarriage I will relax a little bit and make more simple parts: the car body.

    Because the wheelmounts of the rear axles miss one hinge compared to the front axle they are smaller. That means, while keeping the track width of the wheels, I shifted the undercarriage parts outwards and won more than 10 mm:
    upload_2017-10-12_23-31-39.
    Good for the passenger cabin (half cabin shown in the pictures):
    upload_2017-10-12_23-39-26.

    upload_2017-10-12_23-42-40.
    I will just make it a little bit smaller. Problem solved!

    Oh btw ...
    Lesson 4:
    A srewed model isn't necessary. At least until now. But these metal bolts are unbeatable. For some hinges I need longer bolts. Fortunately I have some ΓΈ5 mm steel at the storage:
    upload_2017-10-13_0-0-30.
    And I got the right tools for cutting them :wink:
    upload_2017-10-13_0-3-42. upload_2017-10-13_0-33-22.
     
    Last edited: Oct 12, 2017
  2. Understood but still you needed to point it out to yourself that you were not going to go into that much detail in your notes. :) fyi, Lego parts? I had some fun a while back playing with gear boxes with Legos :)

    (not mine)
     
  3. Jamira

    Jamira Samurai Girl

    Again spring tension. I made a test and got the spring characteristic:
    upload_2017-10-13_12-2-3. upload_2017-10-13_12-8-2.
    Since we have cylindrical coil springs the characteristic will always be linear. The estimated wight of the vehicle cabin will be something between 400 and 600 g. 12 springs. So maximum 50 g/spring = 5 mm spring travel. Possible are 10-15 mm. Cool!
     
    Last edited: Oct 13, 2017 at 11:23
    • Winner Winner x 1
  4. Jamira

    Jamira Samurai Girl

    Haha! Since you became an accredited member of the crafting section of this forum you should consider to set your own Pitbull-goal and build your own Pitbull with RC. Probably from LEGO bricks? I can help you with very special LEGO bricks wich arn't available from LEGO :wink:
     
  5. Jamira

    Jamira Samurai Girl

    HA! I pulled out my old GC today and already at the 6th attempt (after 5x Error 72) it spitted out a code. Hoooorahhh! I went to the auction at Fort Troy and bought a Pitbull for 20 PED.
    upload_2017-10-13_17-37-42.
    Hopefully my GC will let me in few more times. Good for inspecting the ingame model.
    First of all I have to admit, that Wistrel was right: The wheels move vertically up and down. Alas, I will stick with my version now.
     
  6. RAZER

    RAZER Custom title ... uh ...

    Damn now I want to play with LEGO, some cool stuff available for the wheels end suspention

    ldF8g.
     
    • Agree Agree x 1
  7. Please! shut up! lol :)
     
    • Like Like x 1
  8. I know, I was like, I'm 40 and playing with Legos...lol
     
  9. Jamira

    Jamira Samurai Girl

    Everybody must play with LEGO. Even me - and I'm 63:
    upload_2017-10-13_20-12-56.
    Right now printer finished a figure of Kristin for the Pitbull (1:25). Without arms so far. But it looks crappy like hell:
    upload_2017-10-13_20-14-48.
     
    • Like Like x 1
  10. Wistrel

    Wistrel Kick Ass Elf

    I guess I was thinking about if one side might end up more manky than the other? But I guess not. This is likely (certainly) where my knowledge (lack) of 3d printing is a little (lot) missing.
     
  11. Wistrel

    Wistrel Kick Ass Elf

    Oh don't worry about that (noted that you aren't) I was just thinking about stuff in general.
     
  12. Wistrel

    Wistrel Kick Ass Elf

    My housemate made a robot car for some students to program/improve using the unimog and another kit to add extra stuff. Good one to go for if you want chunky suspension.

    Wait no - wasn't the unimog (that was something else) was this one [​IMG]
     
    Last edited: Oct 14, 2017 at 00:46
  13. Jamira

    Jamira Samurai Girl

    A busy evening. I made half of the vehicle vat with the nuts for the undercarriage units:
    upload_2017-10-14_2-34-7.
    I will print a nut-dummy tomorrow to check out if it works.

    And I decided to make the wishbones parallel and changed the suspension. All good now and corresponding to the ingame vehicle.
    upload_2017-10-14_2-40-52. upload_2017-10-14_2-41-39.
     
    • Like Like x 2
  14. Jamira

    Jamira Samurai Girl

    Usually the downside looks better because the printer drives slowly and puts more pressure to the first level. The upper side is often pitted.
     
    Last edited: Oct 15, 2017 at 00:21
    • Informative Informative x 1
  15. Jamira

    Jamira Samurai Girl

    The car body. I decided to use the original shape as far as possible and copy it with nurbs surfaces:
    upload_2017-10-15_0-39-7.
    upload_2017-10-15_0-40-24.
    I made the nuts for the undercarriage again at this body and started with the passenger cabin.
    No clue yet how to print all this. The main body (without the shield) is 345 x 240 x 135 mm (LxWxH). Sounds like 6 or 8 big parts for printing.
    It is really a battleship:
    upload_2017-10-15_0-51-24.
    The model compared to the maximum print volume:
    upload_2017-10-15_1-14-2.
     
    Last edited: Oct 15, 2017 at 00:14
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    • Informative Informative x 1
  16. Wistrel

    Wistrel Kick Ass Elf

    From first impressions it looks like the split might be everything from the back to the front "line" infront of the 2nd wheel split down the middle (front to back) and chemical welded together? Then something similar for the front. Suspect it might be more complex than this though (likely a lot).

    Quick question. How tall would someone who was 161cm be in your model's scale? (sorry I forgot what scale you went with in the end)
     
  17. Jamira

    Jamira Samurai Girl

    1:25 ... so 64,4 mm.
    Nothing for print. Even sister Kristin with 200 cm (80 mm) looks crappy (see above).

    Splitting a model is not mainly a question of size. It's more important to get "good printable" parts. But I will complete the vehicle body first. I know, that I can print it. So all cool. Later I'll start to think about how to print it.
     

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