m2fel

Great MOC and good idea. To prevent the propeller from changing direction, the trick from Control Center 8094 could work. Place 3 gears on a lift arm that can rotate and is therefore able to support two different transmission paths. This is probably not possible with the set due to space constraints and the available parts, but perhaps it will fit into another MOC at some point :)

Hi, the real challenges were in the 90s :). In the last few years i have bought and built 8880, 8868 and 8865, among others. The instructions are as follows: take these 20 parts and try to recognize the differences to the last building step on the picture. And there is no color coding. For 8880 there are black, black and black parts :P In the new sets I hardly make any building mistakes although I build quickly and without focusing. In the old sets I made some mistakes even though I built slowly without distraction :) As a bonus, there is the penalty of the old pins with high clamping force if you have to build two or three building steps back B) So get an old set as a challenge. Buying used sets is even cheaper than new ones (that might be my personal gut feeling). Last but not least, you often have to dismantle entire sets, clean the parts and, if necessary, buy defective, incorrect or missing parts :) I spent more time with 8865 than with any new set. Looking for a used, acceptable set, buying paper instructions, dismantling, cleaning, checking parts, buying new ones or replacing existing ones and building took quite some time. But I enjoyed every part of it for the bargain of 60$ in total!

I like it and it reminds me of the 8275 b-model :)

according to the page: C61508W = CLAAS combine harvester (4400 pcs). The vid is about C65012 CLAAS Xerion 5000 Trac TS

To pressurize two separate circuits you can use one valve. First pump up circuit 1, then circuit 2 and then just close it :)

As liquid I would choose silicon oil as it should not affect the plastic (couplings and hoses) or the metal and is not toxic (still please avoid to eat it :) If you want to pump air into the system you need to be able to separate all loops after. This is an insane build and I love it!

Hey, check out a video from Technic Brick Power. At about 2:22 it shows how to use a motor to run diferent gears by tilting a liftarm right or left and then drive it with the same motor. Lego used something similar in the 8094 control center of the B or C model "crane", where you can find it from building step 22. Hard to put into words ;)

Why not look at rebrickable or search the web for Lego mocs. Then contact the designer if you find something that is close to your requirements or even meets them. There is a lot out there and some might be willing to adjust their moc for your needs and work with you.

I like the crane. Its look and functionality. I don't mind that it does not match the lr13000 as I don't know much about those cranes but it very much reminds me on Liebherr cranes I sometimes see on pictures. As I am price sensitive I most probably will never own this crane but it is up to Lego to decided how to run their business and I really can't be mad about this...

Recolour parts in a useful colour for technic is to much to ask for. Black pins are dark magic! BUT pink bushes for a 253 pieces 3 in 1 creator parrot are desperately needed

Thanks for the tip, just order some micro motors

The tires are mounted wrongly in the video

Hey, not sure but looks like there are two problems with your set-up. When the suspension is compressed the pneumatic cylinder is kinked. The way it is build the 'black end' of the cylinder cannot move around the axle the way it needs when the suspension moves. If the movement was possible the whole cylinder would need to change its length when the suspension travels otherwise the the wheel will be turned (bumpsteer?). Maybe someone else can explain it better or even confirm my assumptions.

I really like how the wheels will have the pivot point close to the centre. Tried to build something similar before but my design was just too weak to be useful :)

I would have a bad feeling if the spring was always compressed. If there is no spring travel at all, you can replace a spring with two 1x6 thin technic beams...