Raus' Rock Crawler Can Handle ~55 Degree Slope

[DLuders]

Marceloraus/ Raus has perfected his Lego Technic Rock Crawler 4x4. His YouTube Video 1 and Video 2 best show its capabilities:

http://www.youtube.com/watch?v=gS5ALAUqZgM

http://www.youtube.com/watch?v=EkNI20QeYac

On BrickTruckTrial, he wrote "Hello everyone, this time, he wanted to play a rock crawler as faithful as possible to the originals. For this I had to stretch the arms that had to work with suspension arms and axles with 4 free. I put a motor in each axle xl individual and did as usual with the bumpers of the springs 8880 set. I put the battery box on the chassis while maintaining low center of gravity. It was quite efficient."

He posted 17 BIG pictures and wrote on his Brickshelf gallery that it is his "Rock Crawler lego final Version. Hi suspension articulation, 2 XL motor for drive and 1 Medium Motor for steering. Custom Tires for best Grip, Custom absolver shoks with 8880 set springs."

Here it is climbing a ~55-degree angle: http://www.youtube.com/watch?v=aB-juXjGfLU

Edited November 9, 2010 by DLuders

[efferman]

nice performance, but could it be that the tires are not from Lego?

[jantjeuh]

nice performance, but could it be that the tires are not from Lego?

"Rock Crawler lego final Version. Hi suspension articulation, 2 XL motor for drive and 1 Medium Motor for steering. Custom Tires for best Grip, Custom absolver shoks with 8880 set springs."

[efferman]

do you know the concept of sarcasm?

[jantjeuh]

do you know the concept of sarcasm?

Doh, sorry

[Zerobricks]

Its great, but I lost all admiration when he started to modify links and wheels.

[Ultimario]

I'm going with Zblj here. At first i was admiring it but when i looked at the brickshelf pictures mroe closely and saw that most of the suspension is made by modifying links and the attachment was in many ways crude, as in links going straight on axles, i had to shut down my firefox window. Though links on axles is not modifying i think it is an ugly way of building as the construction becomes "loose".

I never was against modifying bricks before but this MOC pushed me over the edge. Also something tells me glue must have been used to hold together these modified links, otherwise they would come loose pretty fast.

Using non-lego tyres though is something i can accept especially since they were used on lego rims. If the rims are nonlego then i go to the boo section again.

[raus]

Hello everyone, I'm new here in the forum but had since my Moc has been presented. Sorry for modifications made to some parts of the Moc. never wanted to take advantage of it, just wanted to prove a Rock Crawler done in Lego could do very similar things as the original. Unfortunately Lego tires offered no adherence to what I needed, I did several tests with the original tires and even modified not worked. As for the suspension arms I did was just play the originals that lego's are bigger and I do not have them yet. Now as to set them straight on the tip of the axes do not see any problem. If fixed terminals original ball they drop.

I'm against change, but was necessary because the needs. If you look at my page on Brickshelf will see that no other mine has been moc something.

Thank you all.

[m4rc1n]

Your Rock Crawler seems to be very effective and efficient. Looks very light, it weights 850 grams, and that is its advantage.

What is the gear ratio?

One thing I don't like. It's the modified links. You can say, i'm ortodox about modifying Lego parts (and you're right), and if you do not have needed parts, I suggest you to wait a bit with publishing, and buy parts on Bricklink.

It's not hard to modify parts, but I know, it gives more possibilities. For example you can cut the differential (the one with two gears), to get gear with 24 tooth, and a hole, which can be used in the gearbox.

But, even with modified parts, your Crawler has impresive abilities, and I bet, you can make another one, as good as this, with original parts.

Currently, I'm working on my trial truck, which is Unimog U5000, and it's built for polish competition, so it has no modified parts :D As soon as I'll finish it, I'll show it to you :)

Edited November 18, 2010 by m4rc1n

[raus]

Thanks for the comments and I understand. I have presented in other forums, but Eurobricks, it was not me who posted! Thanks to whoever did it for me!

Well I'm not using the gear box and use that relationship in each axis is> XL motor> 12 t> 20 t - 12 t> 20 t - 8 t> 24 tons on each wheel. It is the relationship that more work before wheel knob used in the output of the XL but lost a lot of torque.

Soon I will be with the original links, but unfortunately the tires to do what he does, just not that original.

Thanks again!

[allanp]

Have to agree with zblj. It's good and all but for me it's cheating.

[raus]

Well, it is very difficult to create a model with original tires to do what he does.

[Milan]

Well, it is very difficult to create a model with original tires to do what he does.

That is a part of the challenge.

[raus]

Hi guys, more videos this rock crawler with no original tires.

http://www.youtube.com/watch?v=T5_NvXBbBTc

Hello everybody, I was criticized by some changes I made to get the results. Not comparing myself to anybody, but we have other examples of AFOLs that modify their MOCs parties to work as expected

Modification and parts used in pneumatic motors

http://www.nicjasno.com/

Modification in parts for use in heavy work mocs

http://www.genuinemodels.com/

Tanks

Edited January 10, 2011 by raus

[DLuders]

Raus, I personally LOVE your Rock Crawler. I don't care whether you modified some of the Lego suspension links, or used non-Lego tires. As a matter of fact, I have RC tires in my basement that can fit Lego axles using Bill's Brickland "12mm Hex Adapter Kit for R/C Hobby Wheels and Tires" (pictured below):

You built a "Rock Crawler" model. There are no stock "Rock Crawlers" that you can buy from the Ford, Chevrolet, or Dodge dealer. Everything is custom-fabricated, but they use Ford/Chevy/Dodge components. I don't see why LEGO is so sacrosanct that one CANNOT and MUST NOT modify them in any way. I applaud your innnovation and willingness to think outside the box.

Can your Rock Crawler compete in an official Lego Truck Trial event? Probably not, due to their competition rules. Is your Rock Crawler FUN and can do what others CANNOT DO? Absolutely!

If you look at the REAL rock crawlers below, you see non-standard wheels and tires (ones that you cannot get from your Ford/Chevy/Dodge dealer). Your MODEL better approximates a REAL rock crawler than do other Lego Rock Crawler models that are limited to using Lego wheels/tires. I have seen real rock crawlers in action here in the Western US, and they almost ALWAYS have huge, knobby tires for better grip.

Edited January 10, 2011 by DLuders

[raus]

Thanks for the support and the compliments. It really could not participate in truck trial, it would be advantageous to me such modifications. But did the same for crawling eem soon I'll walk along with the original aluminum.

Thanks.