Baja Buggy

[MikeTwo9398]

Hi everybody,

 

I always wanted to make Madoca1977’s Baja Trophy Truck or something similar….
Well here’s my result.

Now here you can see it in action….
 

 

 

I wanted to use buggy motors to drive the Baja buggy.
(Unfortunately I only have 1 Lego Buggy motor, but for this model I bought 2 buggy motors from CADA).

The front of the Baja Trophy Truck's chassis is the same as Madoca.
The rear wheel drive is my own design. This also applies to the seats and cabin.
The cabin is not as strong as Madoca's and also lacks the roll cage.

 

 

I wanted to see if this model has a bit of speed and agility.
As it turns out, I can barely drive the model because it is so fast.
It drives on all kinds of terrain.
The buggy drives fine with the normal 1.2 volt rechargeable batteries. But driving through the grass is a bit difficult.

I once read a topic on this forum about lifepo4 batteries and thought let's give it a try. And to my surprise, it really drives everywhere like crazy.

Topic "do-you-use-12v-or-15v-batteries"

The buggy has :

• 1 Servo motor for steering
• 2 Buggy motors for driving (1 on each rear wheel)
• SBrick for control
• Battery box with 3x LiFePo4 and 3x dummy batteries
  (Work also fine with normal (reachable) batteries but has not much speed when driving through grass or very rough terrain)

 

Building Instructions

Nowadays I want to be able to rebuild my own models when I break them down, so I make a digital copy of the model. I always did this in LDD but since it is no longer updated I switched to Stud.io.
It took some searching but now I am able to build the models and making the instructions is also easy.
Here are some examples

 

 

Since Madoca has provided his Baja Trophy Truck with free instructions, I want to share my Baja Buggy's instructions with everyone for free.

Here you can find the Building Instructions and Studio file

I'm not good at designing beautiful bodywork, but building this Baja Buggy has given me hours of building fun.
Making the instruction toke me a lot of evening hours, but I like the result. Sorry for the experienced builders, the instructions are step by step as Lego does nowadays, this means that there are a total of 663 steps (about 500 pages).
It is certainly not a professional design, there are some steps in the Studio file that do not fit completely, but it fits perfectly when building.

 

Some work in progress

 

Compare

Here are some pictures showing the model compared to the famous 8466 4x4 Off-Roader and the 42110: Land Rover Defender.

 

 

 

 

 

And a few renders of the Baja Buggy

 

 

 

 

 

 

More pictures can be found here.  

 

 

 

Edited October 8, 2020 by MikeTwo9398
typo

[Zerobricks]

Awesome model and renders, Mike.

A couplke of suggestions. Moving the front shock absorbers in the center of the suspension arm, or having 2 on each side will make the suspesnion work MUCH MUCH smoother.

I would also use a proper live axle to prevent the rear suspension from trying to jacknife and lift the rear, but of course that would add complexity.

Regarding LDD It has been updated by fans, check the topic here:

You can find RC motors, BuWizz, etc there.

[JintaiZ]

Excellent build! Though it would be nice to put the battery box elsewhere.

[Mechbuilds]

54 minutes ago, JintaiZ said:

Excellent build! Though it would be nice to put the battery box elsewhere.

I've always liked to pretend that the batterybox is kinda like a fuel tank. 

[JintaiZ]

6 minutes ago, Mechbuilds said:

I've always liked to pretend that the batterybox is kinda like a fuel tank. 

I understand that. It's still a great build anyway.

[MikeTwo9398]

1 hour ago, JintaiZ said:

Excellent build! Though it would be nice to put the battery box elsewhere.

Thanks for the comments.

I first wanted to place it directly after the cabin but could not come up with a proper locking.
Looking further I came up with this position. Putting the batterybox here made it is easy and quick to exchange.
And it provides also some pressure on the rear axel.

Although sometimes during a rough ride the batterybox jumped out of its position

I don't own a Buwizz but on this position I believe it fits perfect.

 

I always seem to have a problem embedding a youtube film or a link to another topic like @Zerobricks did in his comment. What am I doing wrong?

[JintaiZ]

53 minutes ago, MikeTwo9398 said:

Thanks for the comments.

I first wanted to place it directly after the cabin but could not come up with a proper locking.
Looking further I came up with this position. Putting the batterybox here made it is easy and quick to exchange.
And it provides also some pressure on the rear axel.

Although sometimes during a rough ride the batterybox jumped out of its position

I don't own a Buwizz but on this position I believe it fits perfect.

 

I always seem to have a problem embedding a youtube film or a link to another topic like @Zerobricks did in his comment. What am I doing wrong?

I think replacing it with the seats will work well, but I completely understand that many people cares about passengers...

[Zerobricks]

2 hours ago, MikeTwo9398 said:

I always seem to have a problem embedding a youtube film or a link to another topic like @Zerobricks did in his comment. What am I doing wrong?

Just copy paste the video link, no embedding necessary.

[Fluwoeb]

Very cool! I like the comparison to the 8466 and 42110 sets. It reminds me of the hubs from the 8466 set. 

I love the use of the hubs in the rear axle, ingenious;)