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ALPACA (KT10-A)

105k hpgbproductions  10 months ago
Auto Credit Based on hpgbproductions's !alpaca_pre2

YAMASHIRO ALPACA (KT10-A, 2026) 4WD, 5MT
Kei truck
Rank: I

Thumbnail mirror (x)

USER MANUAL

NOTICE

  • The truck starts in neutral. If the engine revs but the wheels do not move, the truck is in neutral.
  • Gear stick is not implemented as a physical control as there is no good way to use it in flat screen mode (cannot see the stick), or VR mode (no feeling of physical grooves).
  • Steering assist (reduction of steering angle at higher speeds) does not apply to VR steering wheel controls.
  • Handbrake is not suitable for use at speed. (Jandrewson gib wheel brake input controller pls)
  • Nurburgring test version with different gearing and suspension settings

CONTROLS

Normal game mode:
Pitch - Engine throttle
Roll - Steering
Yaw left/right - Shift down/up
Activate1 - 4WD mode
Activate2 - Low range gearing
Activate3 - Linear steering mode (for external wheel use)
Activate4 - Handbrake
Activate5 - Pickup bed light
Activate6 - Fog lights
Activate7 - Headlights

VR game mode:
Steering wheel left side trigger: Brake
Steering wheel left side grip: Shift down
Steering wheel right side trigger: Engine throttle
Steering wheel right side grip: Shift up

Functions only available through physical actions:

  • Doors, tailgates and tailgate supports
  • Indicator and hazard lights
  • Sun visors

COCKPIT

cockpit front
In addition to the steering wheel, the indicators and headlights can be controlled. Kei trucks, including this one, usually do not come with a tachometer from the factory, so an aftermarket one is bolted on.

cockpit side
Many other controls can be found in the center. (Note that shifting gears is done using Yaw or grip controls on the steering wheel.)

EDIT GUIDE

Material guide:
0: Body
2: Rims
10, 11, 19: Interior
18: Main displays
21: Rear decal

Recommended body colors:
(#104060, m=0.90, s=0.50) Dark blue (copy of NOCTURNE BLUE ZJP)
(#C8FFD4, m=0.90, s=0.50) Mint (copy of ICE GREEN G62)
(#FF6000, m=0.90, s=0.50) Orange (copy of TONIC ORANGE R71)
(#C0C0C0, m=0.90, s=0.50) Silver (copy of BRIGHT SILVER S28)

Funky trees:

  • Steering assist: In InputSteering setter, change 5 to another value. A greater value will lower steering at high speeds.
  • Gear ratios: Change values in GearRatio setter. The first value is the final drive ratio, so try it first.
  • Engine performance: Change MaxEngineInput setter for torque, and MinEngineInput for engine braking strength. These are defined as a series of straight lines.

DEV COMMENTS

Exceedingly boxy small truck built according to Japanese keijidosha (light car) specifications. As a small car enjoyer for a while, I finally went to make one.

sketch
Completed sketchbook page

Most specifications are taken from the two current designs, the Daihatsu Hijet Truck (S500, S510), and the Suzuki Carry (DA16T). The gear ratios (except for final drive) are taken from the somewhat cringe Hijet 5MT system. The torque curve is slightly modified from the Midget II in Tokyo Xtreme Racer Drift 2, so that it has more of a hill. From my provided Desmos graph, you can find peak power at 5100 RPM. The overall feel of driving a kei truck references the Suzuki Carry (older one) in the same game. My truck is slightly better in some ways like bed length and turning radius, but I don't have to deal with any actual engineering.

Car engines in SP produce torque proportional to input. However, from early testing, it appears that the maximum torque is greater at low speeds, before a constant response is reached at high speeds.

There is a very cool (subjectively) tailgate logic system and chain link animation. I made it by writing a very simple chain simulator to generate keyframes and using Excel to produce equations. Remember to use at least 3 s.f. for all multipliers. Surprisingly, they have a noticeable effect even for coefficients as small as 1e-6.
gif

I built with a lot of precise geometry, starting with the frame and bed. I learnt more tricks and established some of my own design conventions for the cabin front, so it is more detailed and also looks different in terms of corner shapes. I've always noticed that different surfaces at the same angle will blend together, so rounded corners are used wherever possible. However, close to the end, my phone was starting to lag and I was also running the risk of reaching high performance cost, so the quality of later objects may be lower.

License plates and the rear decal are imported using SP Label Converter by PlanariaLab, using the Binary mode. These images are very lightweight, but I still adhere to my old recommendation of 10,000 pixels per image.

In addition, the license plates use work from ItsNickkk on GitHub. Large numbers are mostly as generated, but I redrew the small text to make them work better on the Binary label mode. It doesn't actually have Yamanashi as a registration office, but it has Fuji-san.

Of course I took it on the Nordschleife, but due to having no downforce and a very aggressive front grip setup, it will flip or spin a lot if you even just look at any of the bumps there (which you usually can't see).

No lore dump as this build doesn't have any. However, the ALPACA truck line has existed long before the company LLAMA HEAVY INDUSTRIES entered the truck market.

Finally, using the name "Yamashiro" is a joke on two levels. I refuse to explain it, but will still state that it requires basic knowledge of both the land and sea. This company may or may not return in the future - it is one of few engineering companies in the timeline to exist both long before and long after the great shift in the world order.

Extras
Chain simulator (CHAINS.PDE) and related files
Funky engine documentation
Multi Output/RPM (Desmos graph)

Resources
[EN] Keitora: Tiny Trucks - NHK WORLD JAPAN - The video that made me do it
[JP] Daihatsu Hijet Truck Catalog
[JP] Suzuki Carry Catalog

weird reference to a well-known song with synthesized vocals:
day

Spotlights

General Characteristics

  • Predecessor !alpaca_pre2
  • Successors 1 airplane(s) +14 bonus
  • Created On Windows
  • Wingspan 5.8ft (1.8m)
  • Length 12.5ft (3.8m)
  • Height 6.1ft (1.9m)
  • Empty Weight 1,709lbs (775kg)
  • Loaded Weight 1,780lbs (807kg)

Performance

  • Wing Loading N/A
  • Wing Area 0.0ft2 (0.0m2)
  • Drag Points 258

Parts

  • Number of Parts 1645
  • Control Surfaces 0
  • Performance Cost 4,872
  • Log in to leave a comment
  • Profile image

    2305131900 >

    • Initial release

    First person who guesses the song earns the satisfaction of being correct (there is no other reward)

    Pinned 10 months ago
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    i like how everything is interactable, especially the blinkers

    7 months ago
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    @ChallengerHellcat probably. On most vehicles, the CoM is on or slightly above the frame level when unloaded

    10 months ago
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    it's just low CoM? @hpgbproductions

    10 months ago
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    @ChallengerHellcat no

    10 months ago
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    is there a gyro somewhere? handling is too stable @hpgbproductions

    10 months ago
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    This is awesome

    10 months ago
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    @hpgbproductions you can do it?

    10 months ago
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    @alexJgameYTukraine000000 it's not possible to convert this model, but I can make an extremely potato version

    +3 10 months ago
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    @LITVYAK013INDUSTRIES please search online for more information
    You can get the link on mobile as well, I don't know specifics for each platform

    10 months ago
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    LOW PART PLS

    10 months ago
  • Profile image

    @hpgbproductions
    So this must be from a computer, right?

    10 months ago
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    @LITVYAK013INDUSTRIES just upload your images on your server, then get the link. The link should end in whatever file format you used, like .jpg or .png
    On DESKTOP APP: Tap on image, click on view original, and copy the URL.
    Use a search engine to get information specific to your device.

    10 months ago
  • Profile image

    @hpgbproductions
    Ok, its ready, now, what I have to do?

    10 months ago
  • Profile image

    @LITVYAK013INDUSTRIES make your own

    10 months ago
  • Profile image

    @hpgbproductions
    Can you recommend me a private discord server please?

    10 months ago
  • Profile image

    @LITVYAK013INDUSTRIES you need to use an image hosting service to get your image on the internet first, before you can put an image link
    I use a private discord server to host my images

    10 months ago
  • Profile image

    @hpgbproductions
    thaks, but, how I can put my own screenshots in my post.

    10 months ago
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    The build quality is impeccable. The attention to detail, the corrugation, pockets, grooves, are really beautifully defined. Utmost impressive build.

    +1 10 months ago
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    @LITVYAK013INDUSTRIES see this

    10 months ago
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    I have a question, how do you make your texts so organized and colorful, and how do you put photographs in the text, it would be great if you could share the text because I don't know how to do it, thank you and I hope you answer my questions.

    10 months ago
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    1,690 florky

    @DatRoadTrainGuy19 oh.
    .
    i completely misunderstood that...
    .
    yea like that

    10 months ago
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    @teddyone02 i was responding to your comment that said "i would waste money on this rather than buying unnecessary shit" and then i made a follow up comment that is supposed to say unnecesary like an american suv thats what im trying to say

    10 months ago
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    Nice truck

    10 months ago
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    1,690 florky

    @DatRoadTrainGuy19 no
    .
    i like kei cars more, I don't want to waste money on a american suv

    10 months ago
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