Some have a different rate of pulsation for front and rear. I believe the Surge 60/40 pulsators pulse faster on the rear than on the front. I once milked in a parlour that had a high and low speed pulsator that was controlled by a milk flow sensor. The pulsators would go into slow speed when the milk flow tapered off. If you pressed down a little on the milker unit they sped up again as the milk flow increased then slowed again after about 20 or 30 seconds and the cows were milked out. The only adjustable pulsator I've seen is the old Surge vacuum pulsator.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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