Komatsu 930e
Model of one of the largest dump trucks in existence. Features drive, steering, and dump mechanism.
Datasheet:
Completion date: 02/03/2013
Power: electric (battery box)
Dimensions: length 53 studs / width 27 studs / height 26 studs
Weight: 2.106 kg
Suspension: front – independent / rear- live axle
Propulsion: 1 x PF XL motor geared 2.33:1
Motors: 1 x PF XL, 2 x PF Medium
Komatsu 930e is one of several very similar big dump trucks that are being used in world’s largest mines because they are more efficient than a fleet of smaller vehicles. I wanted to model it, using a studfull body on top of a heavily compacted studless chassis. My initial plan to use my servo gearbox in this model failed when it turned out that the model is too heavy for the Servo motor controlling the gearbox.
The model housed three motors, 2 large linear actuators and a few mechanisms in the space between axles. The available space has been used to the point where it was very difficult to make the wires fit in somewhere. The completed chassis was agile, with simple drivetrain that used the XL motor quite effectively, and with a very good steering lock. The body was relatively lightweight and did not affect the performance much. Most of it was built in a fairly traditional way, except for the very front which was built with studs facing forward.
The model was very simple and somewhat inaccurate. Still, it was fun to drive, and it provided a good experience in compacting mechanics and in combining studless/studfull structures. It was also one of my very few models that roughly fit the LEGO minifigure scale.
Hi, very nice model. I like it 🙂 I hope a can build it, even there are now building instructions 🙂
@Witherley
The Servo motor is on the first photo only, it was removed later.
I noticed a typo! It says that it uses 2 M-motors and 1 XL motor but you can clearly see a servo motor in the work in progress photos. So would it be 1 XL, 1 servo and 1 M motor?
Oh you mean lego bricks with studs or technic beams withoud studs, thanks.
@Lennart
With studs and without studs.
What does studfull and studless mean?
@ADI
No.
can i get the building instruction?
@Mahonii
To normalne.
Zawieszenia które robisz to po prostu dzieła sztuki. Genialnie zaplanowane, solidne i niezawodne. Świetne!
Chciałbym zadać Ci pytanie odnośnie silników. Zauważyłem, że te czarne silniki, w kształcie litery L, są bardzo mocne gdy zasila je moduł wbudowanym battery boxem, odbiornikiem i serwem sterującym (używasz tych modułów do swoich supersamochodów). Natomiast w połączeniu ze zwykłym battery boxem z PF te silniki są wyjątkowo słabe. Czy ty też zauważyłeś coś takiego, czy to ja mam coś popsute?
wow, that is super tight, you did a really good job!!
I cant wait to see the black panther and 8×8…
@Sariel
I think the model isn’t quite wide enough, which is why it looks too tall and wheels too wide.
are you going to make the instruction please do make i beg you
Sweet. That’s cool!
Nice project!!!
@SteveWandel
I was thinking it’s more likely too tall rather than too wide. Also, the tires are a bit wider than the real ones.
I’ve been trying to figure out why your model doesn’t look quite right because I’ve worked on mines with these machines. Found some pics on Flickr and it seems that your model isn’t wide enough compared to the height and length. So this makes the proportion look wrong. Maybe needs an extra 4 stud width.
Really interested in the live axle you used. Pity the Lego motors aren’t short enough to install inside the axle line like in real life, but good effort to make it work.