Ngoc Nguyen

It's daytime in my place now so there is more light. That allows me to take some photos of this model in a more flattering light. Look how cute this is.

I finally did it Many tears of joy!!

Aaand video:

3 steering mode: 4 wheel, crab, front axle only

Here it is! Sorry for the potato quality, I don't really have photograph equipment with me. Usually I'd book a professional photography session, but given the tight deadline I'd have to make do.

42054 CLAAS XERION Trac VC Shrink factor: 1/2 (from Tire 107 x 44R to Tire 56 x 26) Functions: - Openable hood - Rotatable cabin - 3 steering mode: 4 wheel steering, crab steering, front wheel steering - Movable front counter weight - Movable crane hitch - Crane rotation - Outriggers - Crane arm lift - Crane arm extension - Grabber rotation - Movable grabber claw Photos: Video: Discussion thread:

Gotta put this here first

I will make it in time! Crane is already built and works perfectly. Steering mode works perfectly. I even came up with an improvement during the build. Will show later. Currently digging through my sets to get the pieces I need.

New parts actually arrived @ _@ Assembly shall commence!

If the steering selector stick is put into the top right hole like in the photo, it'd be inconvenient to pull it out when it's blocked on all 4 sides.

There is enough space for a 4x5 instead of 3x5

Preferably rigid, yeah. That structure is used for the steering mode switch. As you can see in the link https://imgur.com/a/I1JbWyo the bottom left corner pinhole is attached to the rear axle. The top two pin holes are for crab and 4 wheel, while the bottom right corner is for front wheel steering only. The problem is that at any one time, only two holes are fixed. That means the steering structure can actually wobble and messes with the steering. I intend to make it slide along a vertical axle to prevent the wobble. Therefore the sticking out pin hole should be a pin hole.

I need a 3x5x1 substructure with 4 pin holes in the red holes below, and one pin hole go up in the middle like below. I already came up with one solution, which is the design above, but in this design the middle pin hole can rotate, while I want it to be fixed. That is another version but it doesnt look quite sturdy. Any idea?

What timezone is this? I might be able to pull some last minute shenaningans.

I wanna participate but there's a chance the parts might not arrive tomorrow.

Tadaaa https://imgur.com/a/I1JbWyo

IT WORKED! Video coming soon!!

One, eternity, lehter. Left and right are for 4 wheel steering and crab steering. Bottom position locks rear axle's steering, which corresponds with front axle steering only.

Oh wait you're right they both result in the same thing. Back to the starting point I go..

4 wheel steering and crab steering are selected like this. I still dont know how to design the middle one, which is the front axle steer only.

You mean, like this?

It's the 3L part of the yellow 5L axle. The red connector slide between the two ends. That works kinda well. I already tested this alternative. The lime liftarm is now 5L long, and one end is blocked by the turntable so it won't slide out. Sometimes the the liftarm still deviates to the adjacent line though. I feel like there might be another solution.

I'm running low on creativity so I might need the inputs of the pros here. I managed to fix a part of the steering function. The lime 1x3 liftarm will connect to the inner pin hole of one of the two 3x3 T-shaped liftarms. That will select either the 4 wheel steering mode or crab steering mode. There are two problems I need to fix: 1. Supposedly, the red pin with pin hole connector (15100) will rotate around the lime liftarm and will push or pull it. In reality, sometimes, due to fiction, the red connector does not rotate, and instead stay perpendicular to the liftarm. That causes the whole group of lime liftarm and red connector to rotate around the connection point with the T-shaped liftarm instead. I need something to block the lime liftarm from steering into the adjacent lines. In bigger models the selector bar is at least 5L wide, so there can be blockers between 3 steering mode. In this case the selector bar is only 3L wide, so the 3 steering modes are right next to one another. The surrounding area is quite spacious so it can accommodate some bulky structure. 2. I'm unsure about how to design with the middle position. The preferred outcome is that the steering axle should be locked so that only the first axle is steerable. Suggestions are welcomed.

Ok so the part vendor told me that they could send the parts via express delivery and it can arrive on the 20th. I bought the parts, and according to the tracking app the part's estimated arrival is in the morning of Aug 21. Meanwhile I'll build the model from what I have and fix any problem that might appear.

I spend the majority of my day in my company sadly. I got the basic systems wrong at the start. Im scrambling to fix it.