Hirobo 44Bs and Zerda :)

[Dadio]

Problem of the day : king pins.


I know that my friend @Dadio would say it is easy to do with a lathe (i'm sure it is, by the way), but I do not have a lathe...
As usual i'm going to work aorund this with printed parts, a file, a few screws ball bearing and a drill. Starting point will be a 3.5mm screw. I already printed the parts, the 3.5mm diameter screws I'll use as a starting point should come tomorrow.

Nope , don't need a lath , buy much longer screws and put the end of the thread in a drill , spin it up and use a file to remove the thread in the desired place then cut to length

[silvertriple]

Problem of the day : king pins.


I know that my friend @Dadio would say it is easy to do with a lathe (i'm sure it is, by the way), but I do not have a lathe...
As usual i'm going to work aorund this with printed parts, a file, a few screws ball bearing and a drill. Starting point will be a 3.5mm screw. I already printed the parts, the 3.5mm diameter screws I'll use as a starting point should come tomorrow.

Nope , don't need a lath , buy much longer screws and put the end of the thread in a drill , spin it up and use a file to remove the thread in the desired place then cut to length

Sh*t, that is too simple, my friend !

[silvertriple]

It worked, mostly...


A M3.5 screw is not a perfect starting point as the root of the thread is under 3mm diameter. But this will do it...

[silvertriple]

Happy New Year and best wishes to everyone!

This morning I had my first success of 2025, I hope there will be more

The build of this Zerda starts by the differentials. Not a single original part is present on those pictures and was used. Differential internals are optima rerelease diff internals and custom made shafts. I had to drill and cut a new shaft as the second one I did had a slightly off center hole, and the pin was not fitting in the bevel gear. There is ball bearing cages added on my modded diff case.






Good news : they work perfectly. Bad news, I do not have enough 9x17x5 ball bearings to assemble the transmission fully today. Ordered some. They should arrive Friday or Saturday.

I printed the rollers used to make the belt path and the tension in TPU.


Next I assembled the carriers... Again, no original parts. I'll use some HBX wheel shafts, and double bearings to reduce the play.




Again, perfect fit... I'll continue the build soon, but I need the diff ball bearings first...