Finally decided what to build. That will be reach stacker. Never built something like that.

In background there are two failed rear axle bases. As reach stacker wheels turn really much, with high angles, then needed to create frame as narrow as possible.

Second attempt for actuators. It seems, I will need to move them more forward, not only closer together

Starting to also think about pneumatics, those long 1L diameter cylinders, for better look.

looking at some example, those linear actuators are just too thick for scale 

Deleted

Edited July 6, 2024Jul 6 by Ngoc Nguyen

Nice progress so far, I am keen to see how this turns out.

Thank You @Paul B Technic, I also keen to see, what I will manage to do during summer :) , it is hard to find time.

@Ngoc Nguyen , sorry, but I think You replay is not relevant, it is something like show off. If You have some comment on my build so far, if You have solution for particular issue I have asked helped, then please respond. If You want to show some of Your builds, then please create topic about it and we will discuss it with pleasure.

Sorry I didnt mean to show off. You mentioned the possibility of using thin cylinders for lift, so I was thinking that you can use some of the techniques I used in my reach stacker which also used thin cylinders for lift. I already deleted my inappropriate post.

Looks good so far. I think you may want to make some fake struts to represent the lift cylinders. And carry the weight in a mechanism at the hinge point

Tried thin long cylinders, but then I realized, that I will need at least one more for extending boom, (but I have only one two) to have everything pneumatic, not to mix main functions operatinon type, so it looks, I will continue with linear actuators, so trying to make main function

Not happy about everything, especially how much boom can extend. 

But it looks like I have chosen color, as a result frame changed allready.

20 hours ago, Seasider said:

I think you may want to make some fake struts to represent the lift cylinders.

For the extension needed, this could be issue. Only part that comes to my mind, could be too short.

On 7/6/2024 at 7:41 AM, Ngoc Nguyen said:

Sorry I didnt mean to show off.

Thank You!

New boom concept.

Interesting choice, it crossed my mind as well so i am gonna follow this build with interest. Curious how you will make the mechanism for handling the containers!

The second boom part looks a little weakish from this perspective (our it could be just me ), i guess you will reinforce it more later on? The extent of the boom must be more than right now, it looks like it could pile 3 containers!

I like the new boom, is it stronger?

Yes, this is weakish and not stronger, but seems, that will be OK for some fake container. 

On 7/7/2024 at 5:23 PM, Jurss said:

New boom concept.

I've seen this boom concept in a post by @suffocation first and fell in love with it so much, that I had to copy it for one of my tow trucks.
For my truck I found two ways to make this concept tough and reliable:

1. give it a little more guiding, maybe limit the travel of the inner boom part just a little, let it stick out like two studs less,
2. use flipflop beams for the upper guide rail inside of the panels and use them with the first hole perpendicularly oriented, then they are thicker than normal liftarms, which gives the boom more stability and less play.

Maybe that works for you too as it did for me.

And... I really like your project so far, especially the design of the rear axle.

Edited July 10, 2024Jul 10 by XTN

6 hours ago, XTN said:

I've seen this boom concept in a post by @suffocation first and fell in love with it so much

Could be, maybe I also have seen it, but it came naturally. 

6 hours ago, XTN said:

give it a little more guiding, maybe limit the travel of the inner boom part just a little, let it stick out like two studs less,

Thank Toy, beam on side is allready longer, so it doesn't sag so much on full extension. Will check 2nd option, but seemed OK as it is with standard beam.

Some observation:

- In real reach stacker the area behind the cabin is usually as empty as possible to not obstruct the view of the handler when the vehicle drives backward, so I think it's better to put the HOG steering behind the model. This is one compact arrangement to do that.

 

- The container grappler and supposedly the container too will add a massive weight to the front of the boom, so it's more stable to connect the rear and through 28z turntables rather than an axle.

48 minutes ago, Ngoc Nguyen said:

HOG steering

Yes, it is just more temporary now, don't know yet final solution. I'm even considering working steering wheel, but it is really small at this scale, and maybe mechanism for that would conflict with fake engine.

1 minute ago, Jurss said:

Yes, it is just more temporary now, don't know yet final solution. I'm even considering working steering wheel, but it is really small at this scale, and maybe mechanism for that would conflict with fake engine.

If you don't plan to do a sliding cabin then it's possible to have fake engine because it's in front of the cabin, while the drive train goes from behind.