While I wait for the final components that I had ordered to arrive in the mail, I decided to print out a more "final version" of the 3D models that are going to be used. I have been doing a lot of thinking about how to go about attaching the axle, the idler sprockets, and other components. I have decided that the space between the tracks will be 9 inches and that the main drive sprocket will be driven using a 2:1 gear reduction using appropriate 25h chain and sprockets. Those are still yet to be delivered. I am still waiting on some electronic components to come in before I finish assembling the last few boards that are in the brain. Even though it is just a pile of parts, it is starting to look like a lower chassis as things pile up :)

I am considering using some threaded rod as the idler sprocket axles, as I do not have access to a lathe to make a proper axle. The bearings will be captured between two washers and nuts with some thread locker. These axles will then be secured to the frame with the use of 'U' bolts fed through the frame. I guess time will tell how it holds up as the rod is 5/8", this means that at its core it will be about 1/2".

The large pillow bearings are for use in the main drive for each track. In the box, there are two 12v ps-1290 f2 lead acid cells that will make up the 24v power supply. The black "brick" on top of the box is a 2amp 24v battery charger.

The center bar that you can see in the image is to hold the center wheels on each track. This will go over the base of the chassis and be riveted or bolted in place.

I need to upload a fixed version of the current BRAIN.zip as well. I am printing it for a test fit at a higher resolution as I write this.

And now... A pile of parts that make up some of the lower chassis!

That's it for today's update.

Cheers!