I'm building a homemade bagger for my husqvarna. Wonder if the helper fan is nescessary in the chute? The husqvarna has a bagger that just hangs right on the side and holds only 5 bushels. (really only about 3) The main problem is it is very dusty and dirty. The mower creates alot of wind, so I'm not sure I need the fan. It discharges grass about 10 to 15ft. Going to mount it on the back, maybe 4ft of 8in. chute.