- May 13, 2013
- Dallas, Texas
- Kioti DK50SE Cab, Kubota BX23, Kubota BX2660, Grasshopper 729BT
The diffence between the two types of discs harrows is that an offset disc will allow deeper penetration but it is harder to keep the soil level and the opposite is true for tandem discs. In a tandem disc the longitudinal force exerted by the disc blade is offset by the longitudinal force exerted by another disc blade on the oppisite side. This causes the disc harrow to tend to want to float. With an offset disc the tendency for the harrow to float is decreased due to no oppisite disc blade.
My experience is that an offset disc will always penetrate and plow better than a tandem, even when both are heavy duty. I don't know why, but your explanation makes as much sense as anything else I've heard.