Zerobricks

So i spent my whol day today building this little monster only to find out that the lego chain is weak as and that the machine kept loosing tracks every meter... Oh well at least the tracks were a great idea! The tracks were done vith a combo of 2 chainlinks and one tread link. Thanks to the ball joint this machine was able to steer and swiwel some 25 degrees. No gear slips in here! Alsko note that all drive gears are motorized. Oh and the flexible bogies.

Nice and simple. Looks fast too!

The 6L steering arm should still be usefull because it has less friction than the joints Paul used, and it allows for more complex front suspension (with camber, caster, etc...)

I think you could lessen the effect of the claw rotation when bottomed using different gears. Instead of 12 to 20 to 12 gear combo, which means that when bottomed a 12:20 gear ratio jerks the claw, you could use a 20 to 12 to 20 gear ratio, which would mean, there is faster rotation on the claw pivot, yet less torque to jerk it.

My black cat supercar bends only some 5 degrees along the length when resting on diagonal wheels. I think the low twist is due to the diagonal beams in the lower chassis:

No diffs in front?

Yes they are first generation pneumatics.

Its really beautyfull. Reminds me on team model on steroids and motors.

Simillar, but not the same.

After completing the autopump i realized it would be very usefull in a construction equipement. But i wanted to build omething special, unlike the usual classic machines. This is why I chose a walking excavator type of a vehicle. To lift and tilt its legs I used pneumatics, because they are better in routing tubes over the complex joints on which the machine rests. For operation of the arm I chose LA's due to their ability to accurately move loads with little jerking. So here's the excavator nice and tightly folded. The legs are spread and the boom begins to lift: The four legs are than lowered therebye lifting the whole excavator up some 10 cm: As you can see each of the tracks has its own M motor, the total number of motors being 11, all M type: Feeding on some bricks: And spewing them out: The underside of the bottom showing the two autopmups used to lower and spread the legs: And the video of excavator in action: All in all I am quite pleased with the model, especially the pneumatic side of it. Its really fun to play with it, lift it up and dig out the bricks. There are some things bothering me though: The legs bend too much sideways The speed of the superstructure is a bit fast Pneumatics are unstable unless in maximum lowest or highest position Long wheel base makes skid steering hard What'ya all think?

I see Okay. Of course i know what an LA is But that leaves out rotation.

And where is lift function?

Hapy new year with lots of bricks, motors, ideas, wins and health!

First charge some 4 hours, the usual charge time later is arround 2 hours.

I just dont undertsnad why they ddint use another new 5L half beams instead of the yellow half bushes in front?

With 5 axles it will be some 20% longer for sure! And a longer crane means a longer boom!

But for that i need mirrored rotors.

About the 9396 rotors. They seem very massive to me, and as said before they need a more complex rotor stem. @#16 Carsten Svendsen You tried 18 volts too?

I was thinking about the new crane truck. It would be logical to have a 6 way split tranmission on the crane cab part itself. 1st function goes through turntable to extened stabilizers 2nd function goes through turntable raises stabilazers 3 rotating upper superstructure 4 raise arm 5 extend arm 6 winch Is that logical?

Thank you David! I will try not to dissapoint!

Well for start i would try with 2 or 3 blades, they have less drag.

What about 2 Rc units wired in series? Those have no current limit. For start we can leave the rear rotor and just fix the motor via a lever for concept.

Excusme? This is a valid comparison... So what if its already been talked about. Its not like they are flaming each other like X360 and PS3 kids...

Yes, i tried using modifyed blades inspried by Barman and the motor alone ALMOST took off with 2 Lipo battery boxes in serial. I still have some reserve in the blades and in using 2 classical battery boxes with higher voltage.

Few days ago I got this idea about overvolting an RC motor and using the rotors from the education set to make an actual fyling model. When i saw boxerlego's dual power topic, it was a signal to me that the motors can really be overvolted. I tried to make the RC motor take off, but the panel built propellors arent efficient enough, even though it was extremely close, the motor held on one side was vibrating. Here's my idea made in LDD: Now does anyone have those blades to build this thing or to borrow them, so that we can once make a true flying Lego model, even if its just a motor supported by a beam! Also a less used RC motor might give me more of the needed power! So who can help me in any way?