Air problems on 3225 tank

[grainfarmer]

I have a 40' borgoult airseeder with a 3225 tank, my problem is I can't get enough airflow as my hoses to the wings plug when I am putting alot of pounds per acre on. Manifolds aren't plugged and it shows that I have 4500 rpm on fan but am baffled. I need some help...

[poorboy]

Could your openers be too worn? On an old JD airseeder I had, it would not allow me to go above about 3 mph before it would plug, and once I put on new sweeps I could do 7 mph with the same product.

It seems that the air needs to escape at the shank in order to have good flow.

Is the fan turning the correct direction?

[Hopperbin]

Do them long hoses sag much. Just something to look at. The newer drills have the hoses running down along the frame and the secondary spitters are upside down to yours, I believe you could adapt yours and eliminate any sag. I run 4500 rpm on a 66 foot drill with no problems. But that is a 5440 tank so fan may be a little different and I use anhydrous so my pounds per acre are never over 220.

[just_wondering]

do you guys who run your fans at 4500 have problems with damaged seed or seed bounce they seem a little highat 4500.
I realize you don't get plugged main manifolds that way but do you see a cost or am I just paranoid

[Hopperbin]

No seed damage with peas on my drill.
Maybe some seed bounce not sure but I planted canola at 4200 rpm and had a plugged main hose for 100 acres of course when I don't check every 40 acres.