[MOC] All-Terrain Winter Expedition Vehicle

[teetertater]

Hello EB! 

I'd like to humbly show this remote control (PF) winter expedition vehicle (MOC). Featuring 4 independently driven tracks with a unique steering system. More explanation below and in my YouTube video.

 

 

 

It has many issues that I'm not willing to spend more time to fix, but I've learned a lot from the process, which will help improve my future MOCs. 
If I was to start from scratch here's what I would change:

• Put motors closer to driven axles
• Split drivelines into either front/back or single motor per tread
• less complicated steering system
• Use a different type of suspension instead of pendular
• raise the height of the driven sprocket instead of extending driveline with gears
• reduce weight with panels vs lifttarms (I didn't have any at the time of building)
• Never use an Adder again, or if I really have to then use the old-style 24t differentials
• Work more on the cabin/exterior design

A sizeable portion of the issues stemmed from the weight, which is something I didn't expect! I ordered some parts to allow me to finish the frame, and added design elements in the meantime. The design elements were pretty much the difference between being-able-to-carry-its-own-weight and not.

 

The MOC is already disassembled, but I'll be happy to hear feedback and suggestions! 

Edited February 8, 2021 by teetertater

[Jurss]

Interesting thing. Unusual.

Could there be something incorrect in drive train, that it didn't worked well?

[Touc4nx]

I'm not sure that I understand the drivetrain…
But at least it looks technic 
And I love the side ladders, quite compact, yet very functional 

[teetertater]

1 hour ago, Jurss said:

Interesting thing. Unusual.

Could there be something incorrect in drive train, that it didn't worked well?

There were lots of issues with the drivetrain. I think the biggest issue is that I used waaay too many gears to connect from the motor to the powered sprocket. E.g. motor --> 5 gears --> differential --> perpendicular gear --> perpendicular gear --> 5 gears --> sprocket. If I put the motor physically closer it wouldn't have as many problems with friction.

42069 did it right: 

35 minutes ago, Touc4nx said:

I'm not sure that I understand the drivetrain…
But at least it looks technic 
And I love the side ladders, quite compact, yet very functional 

the drivetrain is uhh yeah 
glad you noticed the ladders! Took some thinking how to make them so compact.