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Picture of Remote controlled excavator
I grew up with earthmovers and I have operated excavators for many years. My favorite machine is the hydraulic excavator. However, I changed jobs so I don't operate excavators anymore. Unfortunate, because I still regularly get itchy hands when I see these machines running. Unfortunately, buying a real excavator is not an option for me. Now there are remote controlled excavators for sale that run on model-hydraulics, but they cost a fortune. So there was only one thing to do, build one myself!
 
First i looked on the Internet if there were more people that had this idea. Sure enough, after some searching I found several videos and pictures of working RC excavators that did not cost thousands of dollars.
They were converted excavator models from "Bruder". Yes,  childrens toys, but I must say that these models are very detailed. So i bought one and got to work.


Step 1: How it works

Picture of How it works
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This excavator works with hacked servos, that can spin indefinitely. These servos are connected to wooddrillbit thats running in an aluminum tube, with a steel pin in it which engages in the drill. This makes the turning movement from the servos to a Linair movement for the cylinders.
 
docfcybo7 months ago

Great work! Caterpillar color really does the difference. Scale cylinders also give the model that stunning real appearance!

A question for you: could you please post a picture of the steel pin engaging in the drill? I'm trying some different solutions, but my screw drive experiments tend to get stuck when under load...

Thank you!

Fabio

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

JonahH27 months ago

At first I thought the excavator was a real one cause of the scale of the setting. My mind is blown. I love it.

A really interesting project, I can see similar techniques being useful for lot's of applications.
Amazing, I have wanted one for years. One big problem is I could never build this.
lgarza32 years ago
very cool