Making an 8-wheeled, manned rover: I need help with shapes

[Malachai]

Alright, so here's the skinny: I built a (massive) kethane drilling platform that I named the SP1DR MDP (yes, I got the naming conventions from Borderlands 2). The problem is, it only has 6 wheels, thereby invalidating the name, and also, it tends to tip forward with sudden stops. So I build a base with 8 attachment points for wheels. Unfortunatly, the pod wasn't in the center of the frame, and when I tried to move it, I found out that there's issues with moving your attachment point (big thanks to astropapi1 for pointing that out to me). So I turn to those who are smarter than me (hopefully), to help me figure out a shape that can keep the cockpit in the center of the frame, but still have 4 axles. Also, it needs to be drivable and stable. Here's my failed frame:

Notice how badly off-center the cockpit is. Also, for your information, I'm going to be using the Rovermax Model 3 wheels (The huge ones), so it'll have tank steering rather than standard.

So, help me find shapes. Pretty please?

[Murchadh]

Just to see if I could I tackled your problem and lo and behold, I solved it ... only, how do you actually attach those big rover wheels to the "axles"? I can attach the wheels to the sides of the girders, but they won't attach to the little structural blocks!

[M5000]

Just do the same thing you do with spaceplane building.. Turn on the center of mass marker and make sure it's in between your two sets of the inside wheels.

[Malachai]

Just to see if I could I tackled your problem and lo and behold, I solved it ... only, how do you actually attach those big rover wheels to the "axles"? I can attach the wheels to the sides of the girders, but they won't attach to the little structural blocks!

I slap on the Rovemate one the axles, then I use them as an attachment point. With that out of the way, how'd you solve the problem?

[ruiluth]

Use a rectangle with an X in the middle, then mount the cockpit on the X, like so:

[astropapi1]

Now I'm on bed using my phone (undercover) . But tomorrow I'll try designing something for ya.

I'm glad I could help you!

Are you going for a totally stock truck? Because the modular omniwheels mod has different wheels you can use. Scott Manley used them on his RSS series.