bruder excavator conversions

[edwalsh18]

Originally Posted by scalelover

Hate to say it but those are hydraulics running that one. The screw drives are a lot easier to see because of the servos that would be mounted near the ends of the arms. I'm not sure which model it's based off of, it looks like a bruder conversion. The bucket looks normal to me their are tons of different styles depending on what it's being used for.

-Dan

At first i thought it was hydraulic also. But i kept on searching and found more of them on foreign rc forums. They are definitely not hydraulic which is really cool. On the forum where the guy made it, had a build thread, he didnt say how he did it. I see now that there are more so he must have been selling them. But i am really interested in knowing how he gets the speed and strength without hydraulics.

Oh and also, listen to it. No hydraulic pump. But you can hear what sounds like a screw drive or something similar