All tests
Full fold vanes long and short in centre bolt
850rpm 100kg/ha 14km/h

Test01
Brushes fitted to rear curtain and outside curtains
Very effective
Leaks inwards creating centre shower of granules
Vanes sweep through the centre shower smashing the granules

Test02
Brushes removed, cardboard curtain 5mm above top of vane
Leaks badly at rear of drop zone

Test03
Brushes fitted, small inner curtains fitted to lower edges of chute divider
Still leaks inwards creating centre shower
3 rows of 3 trays tested: 3trays at centre line, 3trays at 5m, 3trays at 7m
Results:
7m = 5.3
5m = 5.7
CL = 13.5
Need to stop centre leaks and adjust chute to stop centre overlap