I saw this kind of axles time ago, but they seemed something impossible for me then, especially when you have other parts of the transmission to improve to have a reliable build.

But people asked for it, and I took my extra time these last days to bring up a working version of Portal Axles for the Rigid Axles Version of the MTC Chassis.

I'm also including the main body of the axles in 3 different lengths, which should let you use 102015 or 106015 HSP CVDs, or a combination of them to achieve the desired axle length.

I have tried to minimise the needed sourced parts as always, and employ the most common and source-able possible parts. In the rear axle you can use the same CVDs than in the front one or use a 3D printable solution for what would be the Rear Dog-bones.

Thanks to an included "Adaptor", you can use 102015 CVDs instead of 106015 ones in the medium and long axles, but you won't be able to use 106015 CVDs in the medium or short axles... So I would recommend you to buy 102015 for short and med, and 106015 if you know you want the long axles. Remember you can use 3D printed transmission in the rear axle if you want to go cheaper.

Inside each wheel Hub a slight 12/13 reduction will occur. To attach the 12T gear to the CVDs you will have two possibilities:

I have only tested the first one by now, but when I break gear1 or deform it, I will go with the second one.

If you already have MTC Total Combo or MTC Rigid Axles Chassis this publication is specially for you.

If you don't have MTC Chassis, maybe you can use this in your own build. With the mentioned sourced parts, the axles should be ready to be installed in other projects. The space for the "Links Heads" is 10mm.

With the medium length axles and big crawler wheels, the total width is around 290mm, 280mm with 96mm wheels. You can add or remove 24mm to those numbers if using the long or short axles.

IMPORTANT
This design has been only partially tested by me; anyway this is the third iteration over the idea to reach what I consider an experimental but working/usable design. If you are one of the first giving a try to this, you will for sure have all my attention to correct or improve what we consider can make this better.