All you pros out there I would like some input on blade tilt angles. I am a logger and grade haul roads a day here and there.
Here is a good link on gravel road maintenance. Scroll down on the page and it shows proper moldboard tilt etc.. http://www.epa.gov/owow/nps/gravelroads/sec1.pdf On edit..Welcome to HEF!
Depends on a bunch of things, what kind of material, how much moisture, what kind of blade, etc. General rule of thumb, you want the material to roll up the moldboard and turn over, or mix the material instead of just pushing it along.
If you're talking tilt as in circle rotation (assuming you are doing a road) you want a sharp angle when cutting out the ditch to gain material and then straighten your blade when you're rolling to mix and spreading. General rule of thumb is as long as you are passing your windrow far enough to clear your tires and you can get enough material to fill your blade without spinning your tires then you have enough angle. As far as blade roll goes you want it tipped forward just enough that the material rolls over as it's passed down the blade. Exception is starting your ditch cut when you want it rolled all the way back and a steep angle on the circle. Cool thing about graders is there are about a million different ways to do the same thing, you just change things around until you find the one that works for you.