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Re: CATERPILLAR 390D LME 1:8
I loved this machine before, but it looks even better when painted!
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Re: CATERPILLAR 390D LME 1:8
Hello at all,
after a long time i have finished the painting of my CAT 390D. Here you can see the buildingreport part9. Enjoy. https://up.picr.de/39274363yq.jpg https://youtu.be/4zUUq2IrNq4 |
Re: CATERPILLAR 390D LME 1:8
It looks good in paint... but it looked good in raw metal too :cool:
Now get busy wearing the paint off :D |
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your machines r amazing on another note where did u get the 3d radio sticks for your graupner transmitter
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Hello Andreas!
Very beautiful creation You have made!👍👍 which Sound module do you use, Servonaut or Beier?? |
Re: CATERPILLAR 390D LME 1:8
I use beier-elektronik. It is very good.
https://up.picr.de/39967377vh.jpg https://youtu.be/boJqGrw3Yiw |
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An artwork, category «Large» :)
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Happy new year.
Not sure where to start here as I have never been on such a forum. So, I will start with I big hello. I am a total novice but discovered construction rc on youtube a year or so ago. Since then, I have been overcome with a desire to make a 1/18 excavator, the disadvantage about this is that I have to start with absolutely nothing. I know that I have to spend thousands of pounds and hours, (short on both) Realistically a am 12months away from starting the build, I do have a decent size garage and a have a very good friend of mine who is very conversant with Solidworks and Alfacam who is willing to help me. Really looking forward to start learning from you guys, I am am in awe of your commitment and attention to detail. Once again big HELLO |
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hello, I am a modeler from the Czech Republic and I was interested in your model. I build tanks in a scale of 1: 4 and now I am in the testing phase. I'll send you some photos if you want. I really like your excavator and I wanted to ask if you can buy drawings for you on this excavator. I really enjoy hydraulics. please contact me !! Thank you
my mail: tomhla@centrum.cz |
Re: CATERPILLAR 390D LME 1:8
Andreas, PM sent
/Dan |
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Hello everyone
here is the last video from last year. I am currently revising the drive system and the entire hydraulic system. Drive is ready so far. Here I installed new brushless motors and adjusted the translation accordingly. Let's see how the drive performs in the field. With the hydraulic system, I switched from the triple pump to a single pump. And I have new valves for you. When the time comes, there will of course be information, pictures and videos again. I think the excavator should be fully operational again in the next few weeks. Until then, have fun with the bridging video. https://up.picr.de/40602018jl.jpg https://youtu.be/6RT6AOnO-QM |
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Amazing and crazy
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Hello everyone
As promised, there is now a video of the new status. As already described, the excavator has received the following changes: - Working pressure 60bar optionally 70bar - One hydraulic pump (IPZ2HR7) instead of 3 pumps - A new valve block (prototype from Schwab Präzision GmbH) - New lines and connections The drive now has two brushless motors instead of brushed motors and an adapted gearbox for a higher speed. I have to optimize the drive a bit again, I'm not completely satisfied with that. I am now very satisfied with the hydraulics. Really a lot of strength and still potential for more. I also really like the controllability. The valves can be controlled very sensitively and have correspondingly large cross-sections. Have fun watching. Greetings Andreas https://up.picr.de/40899499fi.jpg https://youtu.be/YuSRnYf4BeY |
Re: CATERPILLAR 390D LME 1:8
Hello everyone
today I'll introduce you to my new drive system. After the conversion to brushless motors was quite disappointing, I decided to use brushed motors again. In terms of power, my first drive (brushed motors from Servonaut) was very good. Even the steep ramp up to the workbench wasn't a problem. Now I have brushed motors from Dunker again. Namely the GR63x55 in the 12V version. I built a planetary gear in I = 3 directly on the motor. This is from ZD and runs really very easily and precisely with a very high degree of efficiency. After the planetary gear there is a worm gear with I = 7. On the one hand there is the 90 ° deflection and on the other hand it is self-locking. This means that I can simply park the excavator in any inclined position. After the worm gear, there is a 1: 2 reduction by means of spur gears. Then the wave goes "outside". Then you go to the Turas by means of a large link chain and I: 2.8. Thus the overall ratio is I = 117.6. Thanks to the enormously powerful Dunker motor with a nominal speed of 3000 rpm, the speed is now also suitable. But what was the biggest point for me for this renewed conversion is the sensitivity of the drive under load. This was not possible with the brushless motors. And it is extremely important to be able to drive off very sensitively, especially on a steep ramp. The controller from Beier Electronics fits perfectly with these 12V brushed motors from Dunker. Approx. 35 to 40A are drawn under high load. The regulator can briefly up to 60A. Another nice side effect is that the controller hardly heats up and does not make any annoying noises like the brushless controller. What was certainly very unfavorable for controlling the brushless motors is the electrical rotary feedthrough. Due to the long supply lines and the additional contact point at the rotary feedthrough, the controller cannot accurately determine the correct position of the motor and thus cannot optimally control the rotary field. This is completely irrelevant with the brushed motors. So much for the background. Of course, I also made a new video. Have fun watching. https://up.picr.de/41310337cf.jpg https://youtu.be/F8R2Vs81bI8 |
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Hello at all,
it was a very beautiful day outside with my RC CAT390D. Enjoy watching. https://up.picr.de/41456752lv.jpg https://youtu.be/p6X0cGMo0vo |
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Hello,
here is part 2 of the outdoor session. https://up.picr.de/41594173ti.jpg https://youtu.be/w7puE42MYPk |
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Hello,
here is the third part of the outdoor action. https://up.picr.de/41885047ms.jpg https://youtu.be/e2mT-ohnHx0 |
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Hello,
here is another part of the outdoor use with empty batteries... https://up.picr.de/42264964hc.jpg https://youtu.be/NXiHXhmQTWM |
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Awesome talent! Funny....I was reading the thread and wondering where this project is happening. Then I saw the package of laser cut cab parts....Cutworks.com. I went there.....German. Of course, I should have known!
Challenge: make a small diesel engine to drive a generator to run your machine. Then we'll see some sweet smelling diesel exhaust running up that nice smoke stack! You can do it! |
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Andreas,
Where did you learn and practice such awesome design and fabrication skills? You are truly a craftsman and I would say even more of craftsman than your apparent age would allow! Very impressive work. I have not watched your videos yet, but they are on my list. Awesome creation! -Ben |
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Hello Ben,
thank you for your nice comments. A small diesel engine is not possible because of not enough space and they have not engough torque at low rpm. But for smoke there are moduls availible, which will make it. Before I studied mechanical engineer I have made an education for truck mechanic. But the most I have learned by doing. Andreas |
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Hello everyone
the CAT was now allowed to load a wheelbarrow. A foretaste of my new project, which I've been working on for about 1.5 years ... https://up.picr.de/42615638hv.jpg https://youtu.be/IOGZIKXef5E |
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