Mechanics and Construction > Mechanics and Construction

RC Car

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Admin:
Hmmm the larger the red_line/green_line ratio, the faster and more efficient your robot will turn.

The smaller the red_line/green_line ratio, the less likely your robot will flip over during start/stop motions.

In terms of cost and weight, you want both as small as possible.

So in the end, you must CAD all your parts and see what size you need for everything to fit where you want them, as well as taking in to account vehicle motion dynamics  ;D

You can also consider building your robot in multiple layers, where the bottom layer just houses motors and batteries, and the second layer can be changed as you upgrade to new components.

reSpawn:
the parts I made are in real size. As for weight... I couldn't find where to set it in SolidWorks, I will experiment more.
Can you give me some examples of ratios? for instance 2:1 will it turn fast? slow?

Admin:
well there are only two ways to know:
calculate it
build and then experiment

but if you cant do either, just do a 1:1 ratio ;D

reSpawn:
so in conclusion, the bigger red_line/green_line ratio the better right?

Admin:
wrong :P . . . there are always design tradeoffs . . . it really depends on what you want the robot to do . . .

i recommend adding all your parts to the CAD, and then try and shrink the robot until it cant anymore.

sensor placement also affects robot shape.

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