Tatra kolos trial 2025

[jorgeopesi]

Another finished MOC... it is a 8x8 RC tatra kolos trial truck, it has a 2 speed manual gearbox and the rare tatra suspension, is controlled by the lego control from the 42160 set and I have used 804 parts. I tested it a few and it can climb 42 degress inclination without any gear crack sounds... you know me the funny part is already done days ago... I will put instructions very soon and here you are a little video Tatra kolos 2025 , let´s go for the next one.

 

[Jurss]

Good. 

How does it steer, when steering links are at almost 45' ?

[Jundis]

Impressive model, Jorge, especially in this "small" size, at least for typical models with Tatra suspension.

Love the clean look of the underside!

[jorgeopesi]

2 hours ago, Jurss said:

Good. 

How does it steer, when steering links are at almost 45' ?

In fact more than necessary I have to put a stop to limit the sterring because the joints can support the stewring angle.

 

2 hours ago, Jundis said:

Impressive model, Jorge, especially in this "small" size, at least for typical models with Tatra suspension.

Love the clean look of the underside!

Thank you I always try to build as clean as I could, It is part of my fun.

[Milan]

Nice one.

And a video is always a great addition.

[jorgeopesi]

And short maybe almost too short  .

5 hours ago, Milan said:

Nice one.

And a video is always a great addition.

And short maybe almost too short  .

 

[Zerobricks]

Good job, but the suspension angle is way too extreme... Something lots of builders overdo. I'd recommend using older cv hubs which are smaller. Also I would recommend redesigning the steering to have links as straight as possible, having them at such high angle means they can easily be overloaded and moved while going over obstacles. I may build a quick chassis to help out. 

[jorgeopesi]

31 minutes ago, Zerobricks said:

Good job, but the suspension angle is way too extreme... Something lots of builders overdo. I'd recommend using older cv hubs which are smaller. Also I would recommend redesigning the steering to have links as straight as possible, having them at such high angle means they can easily be overloaded and moved while going over obstacles. I may build a quick chassis to help out. 

Thank you, you are right with the suspension but with this size I couldn´t do it as I wish, I tried a lot to recreate the real suspension but I had to go up everything and the truck was too tall...The steering part is very difficult to improve, I like perfect steering, I mean that the steering angle does not change during the suspension movement and it was done this way. Tatras have the drive axle just in the same place that the links, you can go down or up the drive axle but we still have the problem of the links length, 6 studs for a 17 studs wide truck is too much. I want to do the same in another scale using the 42160 wheels, with more space everything will be better.