falconluan

13. Front Shovel Mining Excavator - Liebherr R9800 Functions: 2 x V1 big cylinders for the boom 1 x V2 thin cylinder for the stick 2 x V1 big cylinders for the bucket tilting 1 x V1 small cylinder for bucket openning 2 x small pumps driven by 1 x L motor Pictures: A close look of the joystick control part: Discussion topic: Please read here Video: Good luck everybody!

Thanks for your invitation. I'll try to take some more clearer pictures at this weekend. Hope it is not too late by then.

People offen complain that the pnuematic switches are hard to use, especially the downward movement. I tried to improve this by the following structure: It was inspired by the controlling mechnism of 42040. The longer control arm provides more precise controlling and it is much easier to use. There is some overlap between range of the two linkages' movement. However, the interference is totally acceptable. I tried to align the control setup the same as real world's excavators despites it seems that the opening of the bucket is via a button on the real ones. Thanks and here is the video

Wow, I love the exterior very much! The color scheme is very Liebherr and pleasant to look at. Also, love the compact design!

Yes, agreed that may look better, I'll have a try. Thanks again

Glad you like it. You mean the hoses on the top of the boom? or in front of the stick? I put the hoses there to reflect the real thing's set up. Though the hoses are too HUGE speaking of scales. The hoses around the stick are a bit off from the real one's set up. They can be put inside the 5x11 frame and stick out from the side holes, but the hoses will need to be cut shorter. I'd say I prefer to stay the current setup more. Anyway, thank you for your advice.

Hi, Finaly I finished the excavator. More pics at: http://bricksafe.com/pages/falconluan/r9800 Will upload the video soon. Hope you like it. Thanks for watching.

Impressive! It's cute. Really good skills to pack so many functions and remain good looks

Thanks and glad that this MOC will make you and your granddaughter happy. For the Sbrick related, you can visit https://www.sbrick.com/ directly for help. Also, there is a long thread discussing it in this forum somewhere. For lights in the eyes, there is enough room for the wires of LED. I don't have too much experience on studful building. The simplest way I can think of is to replace the black "eyeball" part with a transparent one.

Thank you very much for your great suggestions. I'll try building something to replace the frame on the top of the cabin. Yes, you are right that I am trying to achieve a "pure" technic solution here. A pile of white 2412b tiles may fit better on the right side but I think they are a little bit fragile. Aside from what you proposed, I'll try to use some combination of white beams and grey axles. Thanks again for your suggestion and encourage.

Thanks and a little update: Undercarriage is almost done. Now only details and the auto compressor are left to be done. Considering the scale of the treads, I chose the 5L treads finally. I think both its width and length fits better here. What do you think? For the tread color, I think black looks better, as it is consistent with other part of the undercarriage as the real thing. Also, for the right side of the super structure, I use the LBG 5x11 panel for two reasons: 1. I don't have enough white ones. 2. I try to present the shutters. Again, what do you think? Should I use grey? White? or build some real shutters? Thanks for watching

Thanks for the advice, I'll give it a try

Thank you for all the kind words above. I think I'll use the 5L wide track, seems that fits the scale better. Having not decided the color of the track yet.

Continue updating: I will not make instruction for it so started building the final version before finishing designing the undercarriage. Final version of the shovel and stick, hope you like it. Of course, a few tubes left to be plugged. Toke the suggestion about the ladders above, I used some 1x2 half beams to represent the ladders, thanks again, guys. The side view of the finished hull, any suggestion is welcome. Thanks for watching.

Thanks LXF and you for your advices. I'll try to make it 2 studs wide as you suggested.

Still like technic models more, but great work there, dude!

A small update: The cabin is almost finished and the pumps, L motor and valves are put in the hull. The ladder is now only one stud wide due to the small scale. Should I widen it to two studs for function or just keep it? Oh, forgot to say that I'll go with R9800 model, since it has the most "simple" hull.

The truck looks great, I like the cabin very much! You really capture the line of MAN truck very well!

Thank you for the reminder and it's fixed

They did fine when there isn't any load in the bucket. The tube of the cylinder for the stick lies on the space for the axle. If the half pins fail when the bucket contains something I'll try to put a solid axle there anyway. Thank you for the advice. Ahh, yes. The front part of Terex and liebherr's bucket are not very different, of course, I'm not the expert here. There back part differs pretty much. Luckily, the liebherr one is not very complex.

Nice design here! I always dream to have a technic car which can shift gears without stopping, now it's almost there!

Thank you . I was inspired by Sheo's great RH400 when designing the bucket. The "teeth", bent beam and panels combination are more or less learnt from him, So, kudos Sheo!

Thanks Jim and other guys for your kind words. I almost spent the whole weekend on this and now it looks like this: (keep in mind that the body work is there just to define the boundary) I decided to use a small pneumatic pump to power the bucket, it works pretty well. With all the tubes plugged on, the arm now seems a little messy. Unlike the real one, I merged most the tubes of the same functions together, and spilt them just before the cylinders' port. By doing this, there are "only" 8 tubes on the upper side of the boom. Also, having tested all the pneumatic functions and they all work well. Please leave your comments and happy building.

Hi, all, I was planning to make a pneumatic front shovel excavator after buying 42053. Combining with the pneumatic parts of 42043, I'll have enough big cylinders for the excavator. It will be a pretty big one and fully RC is a good choice. Since this contest forbidding using PF other than driving the pumps, I chose to build a smaller one using the V1 pneumatic parts. Planned functions: 1 x L motor for pump(s) 2 x V1 big cylinders for the boom 1 x V2 thin cylinder for the stick 2 x V1 big cylinders for the bucket tilting The number of pumps and how to open the bucket are not decided yet. I aim to build this: Liebherr R9800, but it may end to a smaller type since that will look more proper at a small scale. The current progress: Advices are always welcome. Thanks for watching

Take your time, we all have too much patience (or too few tumbler wheels ). Just joking. Again, another true master piece from you! Please keep up the excellent work!