Cat 340D Excavator build

[crueby]

Originally Posted by Originalrob

Your making great progress on the booms ! Have you got plans for the undercarriage yet?

Keep up the good work

I've got a slip ring to get the wires down to motors underneath, plan on having a pair of gearmotors to run the tracks. To start with, will use some metal tracks and sprockets that I got from an RC tank that are the right general size, and see how it all works before I take the time to make my own tracks (have done them for other models, a LOT of work!).

[crueby]

Got the plates on that hold the cylinders, next will start on the pivot bearings and rods at the joint. Then can start on getting the motor into the boom and give it a real test!


Here it is propped up next to the die cast model I am scaling from:

[Originalrob]

Coming along very nicely! Your making rapid progress too

[crueby]

Been away from the model for a few days, this afternoon made and installed the pivot bearings/rod to connect the booms together. Nice to see some parts attached and moving! A couple small fasteners, then I can work out the motor mount inside the lower boom to power the cylinder. Actually, that brings up a question - what are the proper terms for the two booms? Lower/Upper, Inner/Outer, Fred/Ethel?? Must be a name for them...