Combines compare 1660 to 1688

[larryNCKS]

1688 30inch rotor wider longer cleaning area bigger grain tank more power 1660 24 inch rotor should be bunches of difference in capacity in these two!

 

[jp]

The mechanical differences came with the switch to the 1644, 1666, and 1688 series. The 21xx were more cosmetic. You will pick up a large amount of capacity with this switch.