[pmangels17]

Originally Posted by asid61

Is this 34lbs as pictured?
I woud change the rectangular lightening pattern in the front into a triangular one, to preserve more strength, but that's just me.
Is that 15.35fps free speed or realistic?
I think you can get your gearbox lighter if you wanted to by adding a lightening pattern or just redesigning into a flipped-cim verison like 192 in 2014.
Ugh bumpers. I hate mounting bumpers to a WCD. It always looks so awkward (or weighs a lot) when I try. I look forward to seeing those when you add them in.

It is 34 pounds as pictured, hopefully going to stay there. The top speed is calculated with efficiency allowed for (A La the JVN Design Calc). I hadn't thought about the flipped CIM thing, but now that you mention it, it probably would save space. I'll have to toy around with it. Also, I still have a lot of lightening to do, the rectangular thing was just to get a rough estimate of how much weight I could expect to save by lightening.

Originally Posted by Kevin Leonard

This thing looks to have little to no torsional stiffness right now. A structural bellypan would help immensely, or some sort of cross-bracing between your drive gearboxes. 20 generally runs standoffs between their drive gearboxes in our WCD's to help provide that torsional stiffness you're currently lacking.

I definitely will look into cross bracing. It'll probably be in the form of a cross brace between the gearboxes, because I have other plans for the bellypan, most likely a corrugated plastic thing.

Thanks all for the help thus far, it is much appreciated. If anyone could tell me how to attach a file to a post, I can get a STEP file up if y'all want to take a look at it.