pic: Rastogi 8wd Iteration 1.2

[Akash Rastogi]

Originally Posted by Brandon Holley

Why are the hex shafts so long? Just curious, I'm sure its just something you haven't gotten to yet.

Yup, just didn't get to that yet, its just the standard AM model length.

Originally Posted by Brandon Holley

Have you done any FEA on the frame? Its sometimes difficult to gauge the "strength" of a design from sheet metal, especially when first starting to design in sheet. My only comment would be to add a cross member lower on the frame to add another axis of stability, however it may be unnecessary, thats what analysis is for!

I haven't learned proper testing, that's a big part of CAD I plan to learn shortly.

Originally Posted by gyaniv

If the wheels are raised why not going for 8WD instead of 4WD?

I'm not sure what you mean. The center 4 wheels are lowered 3/16" for barely a rock.

Originally Posted by gyaniv

Why did you decide to use 4 dual-nano (have no idea what it is but i figured it is a gearbox) instead of 2 gearboxes and using chain/belt to convert the power? might save some weight over there.

I'm just trying out new nano configurations and it decreases chain usage. I haven't calculated how much power I'm getting to the wheels as apposed to using a single gearbox with dual CIMs per side.

Originally Posted by gyaniv

I don't know much about sheet-metal drive-train but wouldn't it be wiser to bent the sheet-metal towards the robot instead outwards? My opinion is that it will be much safer, more easy to work with, and stronger. But as i said, i don't know much about sheet-metal drive-train, so i also want to hear an expert on that question...

This is a question I have for the experts too. Right now I'm just creating "shells" for the main structures as I've seen done with team 1902's 2008 and 2010 frames. I assume it is actually easier to work with the frame pieces this way because you have more access to the open surfaces of the material.

Originally Posted by apalrd

3a. You could alternatively make the distance between the two side plates exactly the width of an AM Shifter, then put an AM Shifter inside (with the chassis sides as the side plates). Or, you could just use an SuperShifter or Toughbox as you do now, with a live axle, then chain the other side.

I definitely like this idea. Right now I was just going for something that is direct drive, but I'm liking the built in SuperShifter idea a lot.

Thanks for the questions. More suggestions and advice are welcome and appreciated.