Urea 100kg/ha 15km/h 850spinnerRpm
Long vane stayed in mid rake position for all tests

Test1
Short vane length 330mm
Short vane at max rake angle leaning back, bolted in the leading mount holes on the disc (capturing less product)

Test2
Cut 30mm off short vanes, new length is 300mm, same rake and mount position as test1

Test3
Short vane at min rake angle (nearly radial), bolted in the trailing mount holes on the disc (capturing more product)

Test4
Short vane at mid rake angle, bolted in the trailing mount holes on the disc (capturing more product)

Test5
Short vane at min rake angle (nearly radial), bolted in the leading mount holes on the disc (capturing less product)