pic: Tornades's Custom West Coast Drivetrain

[mikem1999]

Originally Posted by TORNADES 3386

It is welding yes and we tested this preseason.
And also conceder the frame work only with 3 to 5 inch weels diameter.
For the gearbox we decide to go with vex 2 cim balls shifter 3 stage
Otherwise west coast gearbox work aso for it.

I'm not 100% sure what the wheel diameter has to do with the drop centers.

Your bearing blocks appear to be these ones - https://content.vexrobotics.com/vexp...40122-Rev2.PDF

I could be mistaken, but it appears that when they are flipped (so the flat side on top) the central hole is 1/8" higher than when they are not flipped. This would give you a drop center to reduce scrub force when turning.

Yours appear to be the other way around.

What do the gearboxes mount to? Do you have some sort of bellypan? Central stiffening?

I'm generally confused because there isn't a lot in your drawing and I'm not sure where you want help.