Axle Collection Thread

[1gor]

Just now, gyenesvi said:

Why don't you try it in Studio and experiment with whatever you think might fit before ordering parts :) 

Because I don't know how to install Studio on my mobile phone.

[MaKi]

Hello everyone, first time poster here

I have built this front axle for an upcoming build: https://rebrickable.com/mocs/MOC-184144/MaKi1972/truck-front-axle/#details
I have meanwhile added spring loaded air brakes to this axle, but not yet updated the Rebrickable post.

Now I’m working on the rear axle, which must fulfil the following requirements:

• Driven
• Pneumatic diff lock
• Pneumatic Brakes (preferably spring loaded with pneumatic release)
• Using planetary hubs (46490c01)
• Dual tires
• 11L width from towball to towball or 30L overall

For clarification, here’s the space I’m limited to:

I already have made a concept that should work (Haven’t built it yet) but it’s pretty bulky:

Here's the .io file of the concept axle, if you're interested: https://drive.google.com/file/d/1WH7qA1ISqvwvius9AKXAbufRvChQAaAW/view?usp=drive_link

Does anyone of you already have a similar build or has an idea on how to tackle this? I know it’s a challenging setup, but it should be possible to make it smaller/more rigid than my concept.
And just as a hint for those that don’t know already: you can either use the official counterpart 52731 for the planetary hubs, or you can push in 92906 with a perfect fit if you don't need steering. At the moment, I’m working on a solution using the latter to see if I can get smaller.

Cheers

 

Edit: I have meanwhile finished the second axle, with the narrow CV joint. It is only a little bit smaller, but maybe more rigid. It also has disc brakes instead of the gear brakes. You'll find the .io file here: https://drive.google.com/file/d/10RboC4Xi88gfBwDI9UM0QIEdKlaTn7ps/view?usp=sharing

Edited June 20, 2024 by MaKi
Added new concept with 92906 axles

[NV Lego technic]

Are there any independent wheel drive steered solid axles with high steering angle and 11-13 studs wide?

[NV Lego technic]

Forget it I'll just make may own;) so here it is:                                    

[Image takes up more than 92,something kb] 

It's 13st wide and uses 62,4 wheels. I've managed to have a good Turing radius and a relatively reliable drivetrain. I plan to hook this up on a worsen diff together with another axle identical to this one.

Edited July 7, 2024 by NV Lego technic

[howitzer]

46 minutes ago, NV Lego technic said:

Forget it I'll just make may own;) so here it is:                                    

[Image takes up more than 92,something kb] 

It's 13st wide and uses 62,4 wheels. I've managed to have a good Turing radius and a relatively reliable drivetrain. I plan to hook this up on a worsen diff together with another axle identical to this one.

You should upload your pictures to an external site like imgur or flickr, and then link them from there.

[Zerobricks]

Inspired by the 42177 topic - specifically a 4x4 squared mod, I designed a very compact independent suspension with brick-built portal axles which also feature a proper hub bearing.

They are actually same width as the 42110's saxles and only 2 studs wider than the 42177's axles:

By using 5L links and double headed CV joints, I was able to make the suspension arms narrower:

Additionaly, hubs are also very compact by meshing a 20 tooth spur gear to a 12 tooth bevel gear:

While this setup is very compact, it is not suitable for high loads, so I recommend it for manual models only. Also please note, this is just a quick sketch up, I only built one hub IRL.

LDD file is available here: https://bricksafe.com/files/Zblj/Misc/Compact independent portal axle.lxf

[1gor]

@vascolp after several months of experimenting and testing, I came with this final solution for narrow axle using reduction hubs:

Yellow 5 studs axles at the back are inteded to hold ball yoint

But since Lego battery boxes are to weak to power my buggy motor, I'll probably use it with PF large motors for propulsion...at least PF servo works with coupled large motors...

Edited July 12, 2024 by 1gor

[NV Lego technic]

Looks pretty cool, I'll definitely be using a similar solution in my MOCs.

[1gor]

1 minute ago, NV Lego technic said:

Looks pretty cool, I'll definitely be using a similar solution in my MOCs.

You can also use gray 28 tooth differential with 20 tooth double bevel gear and Audi hubs can also be used; depending what you need (more torque or more speed. I also plan to use powerfunctions medium motor for steering installed on axle. I have in mind also one another solution with those parts.

[vascolp]

2 hours ago, 1gor said:

@vascolp after several months of experimenting and testing, I came with this final solution for narrow axle using reduction hubs:

Very interesting!

Just tried part of it and it is a perfect triagle! I thought thesewould be too wek but you have a 5L thin liftarm in the back on each side, don´t you?

Also, why the 3x5 liftarm? For protection? Limiter?

[1gor]

21 minutes ago, vascolp said:

Very interesting!

Just tried part of it and it is a perfect triagle! I thought thesewould be too wek but you have a 5L thin liftarm in the back on each side, don´t you?

Also, why the 3x5 liftarm? For protection? Limiter?

Yes, I use 5 studs thin to reinforcement and 3 x 5 liftarm should be used to place panhard rod on end and in the middle 12 tooth gear for steering.

[MTBRICKS]

"post deleted"

Edited December 18, 2024 by MTBRICKS

[Zerobricks]

Here's a nifty trick I found.

You can use the click hinge part 57360 as the drive CV joint for geared and ungeared hubs:

They can work up to some 25-30-ish degrees and will not slip easy. Using this part, you can reduce independent suspension width by as much as 4 studs!

 

[1963maniac]

Sounds very interesting. Can you show how you use this idea?

[Zerobricks]

Just use it in place of the ball joint:

[Ngoc Nguyen]

My design for compact rear twin axles with live axle suspensions. It works with 30.4 rims. The downside is that the wheels'' axles are 6.5 studs from the top frame, unless you use soft spring and put something really heavy on top of the frame.

[Mechbuilds]

Looking for an independent front suspension at the scale that accepts these tires. 

Wanted to make a VW T4 transporter but the front axle on that is just a nightmare to make. 
It needs torsion bars for springs. But figuring out KPI or caster with a diff and driven front axle is very difficult. Does anybody have any suggestions? 
Also thinking about a floating differential build because of the caster angle making it difficult with the driveshafts. 

Anybody got any solutions? 

[Ngoc Nguyen]

Rear axle with a diff lock:

[Jurss]

On 2/21/2025 at 7:10 PM, Mechbuilds said:

Wanted to make a VW T4 transporter but the front axle on that is just a nightmare to make. 

Don't use hubs, use these 

or those other small "hubs", but they are weaker, and not so available.

Torsion is easy :)  some axle

[Mechbuilds]

7 hours ago, Jurss said:

Don't use hubs, use these 

or those other small "hubs", but they are weaker, and not so available.

Torsion is easy :)  some axle

How do you plan on having drive trough that part? 

[Jurss]

OK, yes it is FWD or AWD. Then only some tricky solutions are possible, I suppose, as You have written.

What is the width to scale?

With gearing at the diff You can make narrower (1 stud), or even bring out diff somewhere. OK, now we have that 5L axle with CV joints, which does the same as in my example. That could be in scale, or really close to that

Just as an example, what I mean with gearing at the diff, I think I have seen also steered solution.

[1gor]

Perhaps @Mechbuilds can use suspension like on Ford  GT 42154 set?

[MAP Tec]

 

What´s up Lego Technic fans, 

Here I present a height-adjustable rear axle for my RC Buggy. The mechanism is quite simple, but very efficient. It's just a matter of changing the torque and so the suspensions remain stable in their position ;D 

Instructions are available at rebrickable.com:

https://rebrickable.com/mocs/MOC-220472/MAP Tec/lego-technic-height-adjustable-rear-axle/

I hope you like and support my work :D 

With kind regards 

MAP Tec

Instagram: maptec.baut

 

[MAP Tec]

 

What´s up Lego Technic fans, 

Here I present a height-adjustable front axle for my RC Buggy. The mechanism is quite simple, but very efficient. It's just a matter of changing the torque and so the suspensions remain stable in their position ;D. Thanks to this design, the body frames move with the tires.

Instructions are available at rebrickable.com:

https://rebrickable.com/mocs/MOC-220255/MAP Tec/lego-technic-height-adjustable-front-axle/

I hope you like and support my work :D 

With kind regards 

MAP Tec

Instagram: maptec.baut

 

 

[MAP Tec]

What´s up Lego Technic fans,

Here I present a height-adjustable axle with steering for a buggy, for example. The mechanism is quite simple, but very efficient. It's just a matter of changing the torque and so the suspensions remain stable in their position ;D. Two RC buggy motors are already built into the axle to transmit the full power. 

Instructions are available at rebrickable.com:

https://rebrickable.com/mocs/MOC-220569/MAP Tec/lego-technic-height-adjustable-axle-with-steering/

I hope you like and support my work ;D 

With kind regards 

MAP Tec

Instagram: maptec.baut

Edited May 10 by MAP Tec