G'day I have a 1660 with the crossflow fan... with albus lupins I use 2 large 1 small... rotor 600-650... fan 1050 concave setting 3.... and don't frighten to harvest them a bit soft... they keep very well
I've cut Lupins before here in SC...and im guessing im thinking of the same crop. I grew some for a wildlife seed company (Blue Lupin)...I simply cut with the initially soybean settings by the book...made some slight adustments for post-header loss. But i came to the conclusion after getting done...that here, it must mature in stages where i'm going to end up with a little greenness and ALOT of header loss. The white seed pretty much looked like snow on the ground before i start (real sensitive seed pod). Although I was able to get the "unbelievably" clean.