Fine grading with gps

[ben46a]

Reading this with interest..haven't been on here for awhile..been quite busy of late. I operate a 140 m cat grader with a trimble system. Now and then with the auto on both sides, the blade will jump..but I find this happens when there is less material on the blade. I also find this happens when you are going for example in second gear...just idling along. I find the higher you keep the rpm's the less bouncing\jumping the blade will do.
Now, I am leveling crushed gravel on the Trans Labrador Highway, doing the finish grade. I will level and trimble a section..I always leave a small windrow on the left side of the road after its all to grade...then I will tilt my moldboard all the way forward and brush this windrow from the left side to the right side of the road..this takes all the little washboards/etc that your auto had caused, leaving a smooth finish. Now I have question for you trimble experts...why do I leave the windrow on the left and bring it to the right instead of vice- versa?? Hint: my mast is mounted on the left hand side of the moldboard....lol

Workin for dexters now?

 

[firebird380hp]

new to the site here....when you set down on your bench elev. in the morning to be sure your good there...do you also check to see if your slope cross in accurate? you should have to run manual on either side thats the whole point of the system.It may not be real accurate but I use a 4' level and check my machine cross slope and if it's off I rebalibrate.But with 8500 hours thats a lot of hours for a finish machine

 

[Grader4me]

I do it that away so that when you tip your blade the mast is over your tractor and not out in the open for someone else to hit.

Yup..sticks out like a sore thumb...if I brushed from right to left with all the trucks hauling?.. mast would have been gone a long time ago..lol

Workin for dexters now?

Nope...Humber Valley Paving

 

[Trojen50]

i wonder if the valve speed is too high, over corrects itself instead of correcting the problem, that would explain the duckwalk, i run both sides on auto with the 140m no dramas at all. thats using uts.

Have you ever benched out both sides of your blade with uts ? Thinking of trying it