Dominator TRS

[Zerobricks]

Here is a sneak peak of one of my biggest projects up to date:

Project started with a new type of a gearbox, which uses only two toothgears at any time in order to transfer power from motors efficient to the wheels:

Here are a few specs of the model:

• Length cca. 80cm when folded
• Width cca. 30cm
• Height cca. 25cm
• Weight cca. 4,5 cm
• Dual rear live axles in the back
• independent suspension in front
• 4 electrically controlled gears + 1 additional electro-pneumatically controlled  gear
• Working towing arm in the back capable of lifting weights of over 1kg
• Dynamic lights
• All functions controlled by 3 Sbricks

Currently we have snow here and I can't shoot a video as planned

I will post more info as soon as I manage to take more photos and a video.

[Aventador2004]

Interesting gearbox, does it work well?

[Zerobricks]

11 minutes ago, Aventador2004 said:

Interesting gearbox, does it work well?

Gearbox was made to survive the torque of XL motor/3x L motors in any gear

[Meatman]

25 minutes ago, Zerobricks said:

 

How is this even possible?

[Aventador2004]

13 minutes ago, Zerobricks said:

Gearbox was made to survive the torque of XL motor/3x L motors in any gear

Ok. That's mental!

[Leonardo da Bricki]

First thought was a Henessy Velociraptor 6x6. Like the looks of this machine, show us more!

@Meatman It's really hard to tell from the photo, but the lower axle is mounted at an angle, allowing all the gears to mesh.

[JonathanM]

That is a very interesting idea for the gearbox - nice use of the turntable to get 28z! Looking forward to seeing how you mounted it.

[syclone]

Looks interesting so far, I remember you proposed that kind of gearbox long ago somewhere on EB, nice to see it finally coming to life!

[Lox Lego]

amazing! You have stayed away from the smallest gear in the transmission. (which always skips in a gearbox with a large vehicle) 

I'm very interested how that works, well done!

PS - I love the front lights

Edited February 3, 2018 by Lox Lego

[TheMindGarage]

Very interesting gearbox. Do you think adding a reverse gear is possible?

[Zerobricks]

49 minutes ago, TheMindGarage said:

Very interesting gearbox. Do you think adding a reverse gear is possible?

It should be possible to wedge another gear for reverse,

Here is another photo of the model:

[letsbuild]

Wow, it is absolutely massive! (That's what she said) 

Can't wait to see more!

[mocbuild101]

8 hours ago, Meatman said:

How is this even possible?

That's exactly what I was thinking... The only way I could see it working is with a universal joint at each end - but that would make it too weak...

[Zerobricks]

5 hours ago, mocbuild101 said:

That's exactly what I was thinking... The only way I could see it working is with a universal joint at each end - but that would make it too weak...

Very good thinking and I agree totally.

Unless you use a U-joint like this:

Few more photos I took today:

The engine is a 15 cylinder in an ?epsilon? configuration.

[mocbuild101]

2 hours ago, Zerobricks said:

Unless you use a U-joint like this:

I had a feeling you might have done that...

2 hours ago, Zerobricks said:

The engine is a 15 cylinder in an ?epsilon? configuration.

Interesting... How did you make the crankshaft?

[Lakop]

is it based off a real vehicle or is it your own creation? I love the front and the engine you've thrown everything at it.

H

[Zerobricks]

7 hours ago, mocbuild101 said:

I had a feeling you might have done that...

Interesting... How did you make the crankshaft?

I used 3L axles insetad of usual 2L ones and a combination half-width levers, I will take more details picture of engine for you.

5 minutes ago, Horace T said:

is it based off a real vehicle or is it your own creation? I love the front and the engine you've thrown everything at it.

H

It is loosely inspired by type of vehicle as seen below:

 

And here is a challenge:

Can anyone guess the functions I have not yet stated from the photo below:

[Aventador2004]

4 hours ago, LvdH said:

I think I see locking differentials...

Me too, pneumatic.

[mocbuild101]

7 hours ago, Zerobricks said:

Can anyone guess the functions I have not yet stated from the photo below:

Looks like the grey 5x11 panels on the sides are moved by pneumatics... But I can't quite work out which direction they move...

Also, are the universal joints coming out the back of the servo for a moving steering wheel?

Edited February 5, 2018 by mocbuild101

[Zerobricks]

23 hours ago, LvdH said:

I think I see locking differentials...

Very well obseerved. yes the rear two axles have lockable differentials

16 hours ago, mocbuild101 said:

Looks like the grey 5x11 panels on the sides are moved by pneumatics... But I can't quite work out which direction they move...

Also, are the universal joints coming out the back of the servo for a moving steering wheel?

The 5x11 panels are connected with a function nobody guessed yet

And yes, universal joints allow the steering wheel to steer along with the wheels.

[Saberwing40k]

I'm guessing the panels are fold out steps, like 8466.

[Aventador2004]

2 minutes ago, Saberwing40k said:

I'm guessing the panels are fold out steps, like 8466.

Ha! Beat me to it.

[lcvisser]

Wow, this thing is huge! I thought at first that those were the "regular" 62.4 wheels, but I realise now that those are the Unimog wheels...   The amount of detailing you put in hides its size a bit (of course, I could've read the dimensions first ). Excellent work 

If I may have one comment: I think the boom looks a bit misplaced... Not sure if it's the color, the surface of the panels, or the lack of "greebling" or a combination thereof. When I compare it with the detail of the rest of the model, especially the front and engine bay, I can't help but thinking the boom looks a bit unfinished.

I'm looking forward to the video!

Out of curiosity, is there a particular reason why you didn't close the battery box?

[Zerobricks]

On 5. 2. 2018 at 9:39 PM, Ludo Visser said:

Wow, this thing is huge! I thought at first that those were the "regular" 62.4 wheels, but I realise now that those are the Unimog wheels...   The amount of detailing you put in hides its size a bit (of course, I could've read the dimensions first ). Excellent work 

If I may have one comment: I think the boom looks a bit misplaced... Not sure if it's the color, the surface of the panels, or the lack of "greebling" or a combination thereof. When I compare it with the detail of the rest of the model, especially the front and engine bay, I can't help but thinking the boom looks a bit unfinished.

I'm looking forward to the video!

Out of curiosity, is there a particular reason why you didn't close the battery box?

First, sorry for late reply, had  abusy week.

About the boom, it is suppose to look basic and utilitarian in order to contrast the detailed rest of the model. It also is made the extend out by additional 30 cm, while supporting a weight of around a kilogram.

I will record the video as soon as the snow melts.

The battery box was left uponed because I was in process of changing batteries didn't bother closing it. This thing drains batteries really fast, so I am thinking of using another source of power for video recording.

Here are the close-ups of the rear axle subassembly:

Notice anything unusual in the front axle?

[letsbuild]

15 minutes ago, Zerobricks said:

:snip:

Notice anything unusual in the front axle?

:snip:

It's very colourful? It's steered, suspended, and driven? I have no clue...