Best way to calibrate it is with a tarp under it, and the chain off. Fill the box with the seed you will be using. Rotate the shaft X number of times. Weigh the seed on the tarp. You know the diameter of the drive wheel, and the number of teeth on the sprockets. Do some math and you will soon find out what the actual rate you are seeding, in lbs/thousand square feet, or Acres.
Re: question about brillion seeder in reply to Diydave, 02-27-2013 16:51:49
That is the only real accurate way to set it. OFten times the variance in seed weight is enough to throw chart values way off anyhow. So... you an either weigh it or guestimate the opening with or without the chart.
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