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Finaly left side is made as I wanted, so @eric trax, @Jundis and @Thirdwigg please tell me if I can make something better.

Pitty that there are no few extra pneumatic chlinders or actuators to make backhoe...now you can make it in yellow when liebberr will be available to you Seriously you made great alternative. Impressive that you managed to add 3 steering modes

...at least right side with stairs and toolbox is finished... ...later I have replaced light bluish gray dogbones with black ones on front axle

Probably TLC could make it as small set but without pneumatic (to cheap to introduce small cylinders) and without suspension

I agree that making lots of things in small space is very challenging; even for me (my models are in 1:15 scale) it is hardto implement what I want and have sturdy model because everything has a kind of chain reaction.

For someone who makes tiny models I have expected that you will install all functionalities in smallest possible model. So honestly it is not a big surprize at all, but again you made great model.

And your model is not dark bluish gray? Anyway you made lots if functionalities in such small space; TLC sould have released something like that as they released mini Unimog (9390 set). Great work

If you are interested how re re redesigning of Fastrac is going; now all motors are placed inside central chassis part which includes 2 XL motors for drive, servo for steering (unfortunately no space to put one servo on each axle) one m moror for front pto and one for rear (you can see that one is turned to front and one to rear). Now since I needed more than dozen iterations toake something like that compact and stiff enough, I assume that until end of year I'll find a way how to make front part that will include battery box below bonnet (it remains unchanged) and to enable some stud, stud and half suspension travel on ftont axle. ...now I realized that I forgot to turn of rotation on ma mobile phone... Special thanks to @Zerobricks, @Philo and @gyenesvi who helped me with their experience when coupling 2 PF XL motors

Cab and engine compartment look even better than original set because you use bricks and not stickers.

Perhaps you can use those CV joints (and make bricks built hub...)

It was very loooong time ago that I made so.erhing meaningfull, so far only managed to squezze 2 XL motors in Fastrac 4220 chassis(and finally it works very smooth) and now I'm brainstorming how to install m-motor at the rear... since it will have multiple steering modes

@Jundis, because they have ball joint only possible was is to angle suspension arms like in this image (but then you'll have to live with only oscilated front axle, no real suspension...) https://www.eurobricks.com/forum/index.php?/forums/topic/161934-systems-tractors-and-other-machinery/&do=findComment&comment=3579929

It is very nice shrinking model.

Bases in this post, he can use tractor tires on tractor Of course, to be sure better ask @Jim about it

This frame is real blessing; if only there would be 15 x 7 frame (without reinforcements)

Very nice to see that you use 3 x 19 frames for such small chassis.

Imho it is always better to use those kind of tire that are ured on real machiery. For me baloon tires are unrealistic, to wide...and I have whole (traveling) bag of them... Second picture is the best

Trailer looks very good

This one turned great indeed; I wonder what is going on with your gorgeus CLAAS Lexion...

Motorizing it? One L motor for drive and servo for steering? I'm affraid that you should streagthen axles...

Johannes, your interpretation us very good indeed and those 49.5 tirrs are made for it

It really looks spot on.

Imho yellow lights to distinguish them better... I suppose you font have 5L liftarm thick in orange and perhaps those rotating lights would be good for your project (even if they are onrange)

Buddy you know what is the best for your project; my ongoing project requires multiple steering modes, so I keep myself busy designing compact (as possible) both front abd rear axles that include PF servo...

I'm affraid they won't be cheap and except crane IMHO it hase very limited usage