Krupp 180GMT 1/20

[kerst]

Originally Posted by frizzen

Very cool!!!

Are you going to rc all the functions, or just do like drive/steer and still have to hook up a breakout cable to deploy the rest?

Thanks!
It will be only for the driving functions. I just tried it out and it worked beautifully.

Kerst

[kerst]

The counterweight trailer is more or less finished. It includes the RC equipment and battery.





Here are 2 videos of the first test drive:
https://youtu.be/jc9PJV-BBgQ
https://youtu.be/aza5BS8ruVg

Kerst

[kerst]

Another video, this time with more space available and driving at full speed.

https://youtu.be/n_fAej0tEjc

Kerst

[frizzen]

That's really awesome!

[kerst]

After 4 years I decided to upgrade the RC controls. I learned a lot while building the Euclid and i am confident to make all carrier functions RC controllable. The Krupp has a powershift gearbox with 3 speeds and an auxiliary box with 2 speeds. The transfer box has a differential which can be blocked. That takes 5 channels. It will be fun to be able to control all these functions remotely.

So far:





Kerst

[Bo Wallen]

Very tidy and orderly installation.

[kerst]

All the gear has found a place and now I need to "cover it all up" The first test run was satisfactory.



Kerst

[jerry56]

That is some great engineering I like these crane builds...can't wait to see it together.

[kerst]

The rebuilding is complete!
After I rearranged the carrier and made all functions (except for the outriggers) RC controllable, I started work on the upper.
I was never happy with the upper and I decided to take all the motors out and replace them with new ones. I also changed the telescoping mechanism and installed the motor and spindle in the boom. That is a great improvement. The hoist also uses a spindle, but a better one than the old one. The counterweight has a motor inside and this way it can attach itself to the upper. All together there are 6 functions. Since I have only 4 feeds I had to add 2 switches on the upper.
With all these changes I gained a lot of space and there was ample space for a battery for the carrier. It connects with a plugin cable.
With all this rebuilding I tried not change the parts that worked well. I am pretty happy with the result, although some painting is needed,

The motor compartment of the truck:


The new swing motor and the 2 motors for the winches.


The boom hoist


Here a comparison of the old and the new.


The other side. Lots of electric connectors. The battery is connected via this little storage box next to the hoist cylinder.


Kerst

[kerst]

For the outriggers I have a solution. I can use the outlet for the counterweight for a small geared motor to activate the outriggers.



This is the console for the driving functions. The left lever is for the powershift main gearbox, the right one for the acceleration and steering and the top right toggles control the transfer box low-neutral-high and the diff lock in the transfer box.



Here some more pictures:









Kerst

[jerry56]

That crane is a true work of art, nicely done...