Del350K4 Haha, thanks. One of those things where you just design logically for function and the form ends up looking good, that's the beauty of mechanical stuff I guess.

Yeah...I´m thinking of WW II aircraft and I see your point.

Thank you 😊

Maek Mo thank you. Look forward to seeing what people do with it.

I still look forward to your work.

Thanks. Files are linked in the description, free download from myminifactory: www.myminifactory.com/object/3d-print-ossum-rear-axle-mk-iii-65939

Thank you, I am glad you like it and I look forward to seeing your print, please do share! I haven't done a front axle yet, I have some plans to do a front beam for this project, but it has been sidelined for a while now.

Thank you! I really need to get around to the rest of this build, I am also planning a full vehicle, just never quite got there on this one. If you do use it please let me know, I'd love to see your end results!

@@JasonSuterOssum Sure will! And I will stay tuned for your further work.

Hello! Thank you, I hope that you can share some photos when it is done, I will love to see it. These are the bearings you need (4) 12x8x3.5mm bearings (2) 18x12x4mm bearings (2) 15x10x4mm bearings (2) M4 rod, 80mm (2) M4 nuts (16) M3x8mm screws

Thank you. I haven't done a front axle, but perhaps i should. I decided the knuckles would be huge with the size of the CVs I did for the driveshaft. Im actually starting to work on this project again due to lockdown, so the single seater racer should get done eventually

Ben Gorton all the bearing sizes and hardware are listed in the description on the myminifactory page. You can also see the sizes in the files since there are printable bushings that you can use in the meantime. I'd love if you can share some pics of you make on myminifactory when it's done, I'll be keen to see it.

That should be the same, the first two large numbers indicate the inside and outside diameters, the convention about which comes first seems backwards to me to be honest, I might have put it in the wrong order (again). And thanks glad you like it, please do share your results with me when you're done, on Facebook or myminifactory or whatever.

Those STL files are all that you need in order to print it.

I designed it in Fusion360 and printed it on my Robox Dual 3d printer. You can get the files to print it yourself from the link in the description.

Sure, if you turn both wheels the same way then the shaft will rotate

I see two challenges (a) the gears in the diff would get _really_ small, beyond the scope of FDM printers I think, but maybe SLA/DLP could pull it off (b) it would probably need a redesign since the bearings would no longer fit, unless you managed to scale it to perfectly fit smaller bearings, but that seems unlikely

It is designed to be the same scale as scx10 axles, which are called 1/10 but of course that all depends on what you are building. These would be way to big for my 1/10 MB jeep, you'd have to scale it up to about 1/6 to use them at this size. If I remember correctly they are about 185mm hex to hex.

@@JasonSuterOssum Thanks again for your reply. I have a 1/6 Ultimate Soldier Schwimmwagon WWII German Scout Car, plastic static that I would like to convert to full R.C for land and water. I need your axle to make a 4WD and wider for my Car`s body width. Can yours fit that need? Any help would be appreciated. Thanks, George

@@georgetonkovic1275 I don't know how wide your car is, you'd have to figure that out. I might be suitable. My axle is only for RWD though, I haven't create a front powered axle yet.

Si tu parles des pièces du différentiel, toute la structure est imprimée en 3D. Je l'ai trouvé ici: www.myminifactory.com/fr/object/3d-print-ossum-rear-axle-mk-iii-65939

Depends how yoh drive and what you print it from, but it will never be as tough as a high quality axle with metal gears.

Hi, sorry for the slow reply. Yes, I am indeed from South Africa. This was made a _long_ time ago, so I don't remember where I got the bearings, but I used to use Bearing Man in South Africa or Banggood for everything else.

Yes it is about 1/10

I honestly have no idea, there are so many variables, from print quality to wheel diameter, but it sounds like quite a big ask. If you try it out let us know how it goes!

@@JasonSuterOssum surely , and soon

These are all printed in rigid.ink ABS, but if I have any hassles i will migrate the gears to nylon. So far they seem to be doing ok. I have put some general purpose grease on it, which made it a lot smoother, but to be honest I don't think it was the right stuff, I have since read that petroleum based greases are no good for ABS in the long run. White lithium is apparently good.

Jason Suter Thank you Jason! I ordered samples of filiment from Rigid Ink and really like it but they don't sell full rolls of their products here in the US. I was going to suggest white lithium grease. It doesn't seem to attack plastic. Cheers!

That's a shame, It is fantastic stuff, I am a huge fan of the silver ABS, it has a nice "cast metal" look for scale RC stuff.

You can find all of the bearings listed on the myminifactory page in the description

Thanks

You're welcome. If you do build it please share a picture on myminifactory, I'd love to see it.

The link is in the description under the section marked "Download the STL files: "

It was designed to be the same as an SCX10 axle, which, If I'm not mistaken, is 180mm wide. It's been a while since I made this thing though.

This one was printed on the Robox Dual

This sounds like a very cool project, Ill be very interested to see it! If you're using the axle as is then I'd prefer if you directed users to download it from my myminifactory page in your instructions. Getting traffic through those kinds of places are the only way I'm able to fund releasing all the designs I do for free. If you bring the project to completion I'll definitely direct folks to it, since I love seeing projects that use my designs.

@@JasonSuterOssum Ok, that sound fair. Hoppefully I finish it in the near future.

@@JasonSuterOssum I have some questions: First: is the parts list correct? I counted four 12x8x3,5, two 18x12x4 and four 15x10x4 bearings. Secound: is it normal for the parts to be so under sized? The pinion gear shaft came out with a diameter of 7.7mm and is supposed to fit in a 8mm bearing (?). My printer is usually very accurate.

@@blubb7711 Hi. I have checked the bearings and you are correct, thanks for the correction! I have updated the list. I have also uploaded a new pinion which is designed to have a 7.9mm diameter. Most printers are not as well calibrated as yours on outer dimensions, I usually find people can't reliably get things to fit if I leave the clearance so tight. When aiming to make things easily printable across a vast range of printers I usually provide 0.3mm clearance.

@@JasonSuterOssum Where can I find the new version? When I download the zip, there is stillt the 7,7mm pinion gear in it.

0.4mm

abs or pla?@@JasonSuterOssum

This was a long time ago, I am not certain about the white parts, I think they are PLA, but the silver/grey is definitely the incredible Rigid Ink ABS, which is sadly no longer available@@subhajithalder3358

@@JasonSuterOssum thanks.

I do use grease in mine, but didn't have any suitable stuff for ABS when assembling, didn't feel like dealing with "that's the wrong grease for that plastic" comments 😜