[WIP] Reach steacker

[Nebulaire]

Hello,

I'd like to present you my first Lego technic project. I've done already some MOD but I had never started a project from scratch.

I want to build a reach steacker, just like those used in rail/road terminals.

My work is to manage road/rail trains, I see reach steackers every day, that's why I choose to build one.

I have started with the chassis and the front axle (don't mind about the color of parts) :

I need to build the rear axle. I've order few parts to move on. I also need to do some research about the position of the motor and the number of cylinders.

I'm intend to motorize it with one XL for propulsion and one M for direction.

Feel free to comment, any help is accepted

 

 

 

Edited April 13, 2018 by Nebulaire

[sirslayer]

Looks like a large model.. Volvo engine and good selection of colors ..  Can't wait to see the end results 

[Nebulaire]

My first chassis was too weak, so i decided to rebuilt one this week-end :

This time, the chassis is strong, especialy the rear axle support :

This allows a good clearence for steering

I was able to mount an XL for driving and a M for steering :

I have this sepcification for the engine and its placement on the chassis

Update coming soon !

 

Edited April 9, 2018 by Nebulaire

[Aventador2004]

It's a good start, hope you get it working. I would suggest less stacking beams.

[Nebulaire]

Thanks,

I try to build a strong chassis, that's why i used a lot a liftarms.

The chassis will be partially rebuilt because i figured out that the motor needs to be mounted between the two axles.

To be continued.

[Aventador2004]

3 hours ago, Nebulaire said:

Thanks,

I try to build a strong chassis, that's why i used a lot a liftarms.

The chassis will be partially rebuilt because i figured out that the motor needs to be mounted between the two axles.

To be continued.

I used to stack lift arms too, but vertical / horizontal gives better strength.

[Nebulaire]

Yesterday, I received missing parts for direction and for the fake motor :

I also received the power fonction, still need to order an Sbrick :

Let's get back to work :

 

Here is the V3 of the chassis with XL motor for driving, M motor for steering and the fake engine between the two axles just like real reach steacker :

Now I have to finish the steering :

I still have a good clearence for steering :

 

Edited May 24, 2018 by Nebulaire

[Nebulaire]

Yesterday, I finished the rear axle and the steering :

Fit quickly an IR recepteur and a battery box. It drives !

It was pleasant to play a bit with it. Steering is a bit tricky since M motor is direcly connected to the steering rack. I think I need to rebuilt the rear axle to make it more simple but stronger and to reduce the speed of the m motor.

 

[arijitdas]

@Nebulaire I think your build is coming up nicely. I am closely following your thread and this sure is a lot of inspiration to me.

[sirslayer]

simple is good!!   

[1gor]

That is a good start, but we know a little about vehicle that influenced you 

At least I can say that tire choice is perfect 

[Aventador2004]

That m motor will not recenter well. You should put a friction gear in the system.

[Nebulaire]

3 hours ago, Aventador2004 said:

That m motor will not recenter well. You should put a friction gear in the system.

I know and this is what I'm looking for.

I'm sorry but my english is not so well, what do you call "a friction gear" ?

[Aventador2004]

A 24t Clutch gear, part # 76244c01

[Bartybum]

Steering should be like this:

motor -> worm gear -> clutch gear -> gear reduction -> steering gear

That way the steering will be safe from damage and slow enough that you can re-centre it.

[Nebulaire]

On 13/04/2018 at 10:56 PM, Aventador2004 said:

A 24t Clutch gear, part # 76244c01

I've listened to you and add a clutch gear and some reduction.

I made some changes on the rear axle to make it simple but stronger without stacking beams :

Edited May 24, 2018 by Nebulaire

[Bublehead]

Let me start by saying, great work and you show lots of determination and you have a good picture of where you want to go. If I may, let me point you to a resource that some don’t think about all the time but it can really help you out. The instructions for all the old technic sets are online, so find a similar vehicle and download the instructions and just page through them and look at how some things are built and see if you can find ways to apply your ideas using some of their techniques...  And even if you don’t use them, you build up your knowledge of how Lego designers have solved problems in the past. Kind of a quick way of getting familiar with different ways of doing similar things like suspensions, steering gear, gearboxes and the like.  Most important rule of Technic building, though, is have fun.

Edited May 24, 2018 by Bublehead
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