John Deere 71 Metal Hoppers

[jk629]

I want to plant grain sorghum with my 71's. The manual is showing a configuration different from mine including the hopper bottoms(floor plates). Are floor plates the same as cutoff plates? If not what are cutoff plates? Is changing floor plates a major mod? Looks like the hopper is formed around the floor plate.

My setup is 12 row 15" rows, metal hoppers, B15490 Floor Plate.

Thanks

[Tritonman]

The sugarbeet bottoms have alot more holes in the plates and would plant alot closer together. Does your manual reference them?

[jk629]

I put on a small plate with 50+- cells(N2025-D) yesterday afternoon and did a sample per the manual and got ~750 seeds in 5 rounds. I have the drive as slow as possible, smallest driving largest . I know now I need a plate with a fewer hole count and I found them online.

I was wondering if anyone had ever changed hopper bottoms? It looks like the metal hopper is formed around the hopper bottom.