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| I put a Norac system on my 4720 last fall. Sounds like a very similar situation to yours - 90' booms spraying over terraces. I have the 5 sensor system and the active roll control. Sprayed about 1200 acres with it last fall and was very pleased with the results. I normally spray around 12-13 MPH and was able to spray over terraces at an angle at that same speed and maintain a 32" boom height. The Norac system was able to maintain very good control of the booms - in fact I tried speeding up to over 16 MPH and could not make the booms hit the ground. It looks like the active roll has quite a bit of effect on the speed that the system is able to move the boom tips. As the machine rolls over a terrace, it simultaneously lifts one tip, lowers the other and rolls the entire boom as needed to maintain the correct height. I agree with the other post - without the extra sensors the boom will not "see" terraces unless they are either in the center of the machine or at the ends of the boom. The only thing I had a problem with was the fact that my sprayer is not equipped with below horizontal cylinders. I think that would let the booms follow the terraces even better. I actually have the new cylinders but haven't installed them yet. As was mentioned, I would hate to go back to spraying without it. | |
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Norac Boom Height Control
