pic: 4587-Sheet Metal Chassis V.2

[Adrian Clark]

Originally Posted by Cash4587

I had planned to run these as dead axle cantilevered gears on shoulder bolts I chose dead so it could be ran on the shoulder bolts. If I did run it live axle, wouldn't it be more weight or close to the same, as I would have to run the axle all the way through and use more bearings?

I don't quite follow you on removing one of the gears. I put that many on there so I could remove the belt that attaches the two butterfly modules together.

In this configuration the robot would be the same length and width, but it could be easily modified and changed.

Sorry for any mistakes I typed this on mobile.

I assumed you'd be supporting the gears on either end, so disregard what I said about weight. Also disregard what I said about removing one of the gears, I kinda forgot the modules were in the way.

I'm very cautious about cantilevering gears because it's hard to tell when a gear is properly supported for an application. More often than not this kind of setup causes high wear and inefficiency. I'm not sure how your setup would handle load, it could be fine but it's definitely something to be wary of. I might run a simulation later to see what happens when a setup like this is under load.

If I do run a simulation i'll also check the loading on the pinion gears. I'm not sure they'll like having power from four motors running through them. The pinion load is definitely something to worry about with a setup like this, and it could make things a lot more complicated if they can't handle the load.

Aside from proper gear support and weight, something to keep in mind when placing your gears is how you're going to fit in braces for the outside frame. Another thing to consider is the process for changing a motor. You'll want to ensure the cutouts are big enough to get some fingers around the motor.

As for the robot length, when I looked at the render it looked shorter because the cims were closer together. Looking back I see that it's the same.

-Adrian