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GRAIN DRILL TIRE SIZE
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FREEDGUY View Drop Down
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Joined: 15 Apr 2017
Location: South West Mich
Points: 5396 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FREEDGUY Quote  Post ReplyReply Direct Link To This Post Topic: GRAIN DRILL TIRE SIZE
    Posted: 22 Apr 2017 at 11:08pm
I am not a tire expert so bare with me. We have an International 510 drill (sorry) that has 3 different tire specs in the manual. 1 of them is a 7.50x20 truck tire. Ours has truck tires but they are 8.25x20. Will this difference in numbers effect the popualtion settings ? Thanks
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Dakota Dave View Drop Down
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Joined: 12 Sep 2009
Location: ND
Points: 3964 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dakota Dave Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 2017 at 11:24pm
Aren't the seed cups driven from the packer wheels? On the JD the tires just hold up the planter and are used to lift the opener disks out of the ground. The drive chains run back to the packer wheels. If I rember correctly a 8.25 in a couple inches taller than a 7.50 that's about 10 inches differant in circumference. That's almost 10% difference.
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Dans 7080 View Drop Down
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Points: 1146 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dans 7080 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 2017 at 11:28pm
7.50-20 are 37.7" tall and 8.25-20s are 39.3" tall so the short answer is yes but I doubt it would be enough to know. The 7.50 is 551 revolutions per mile and the 8.25 is 529 revolutions per mile. If you could figure how many seeds it drops in one revolution you could adjust accordingly if you want to pin point the population.
When someone tells you Nothings Impossible, Tell them to slam a revolving door
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FREEDGUY View Drop Down
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Joined: 15 Apr 2017
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Points: 5396 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FREEDGUY Quote  Post ReplyReply Direct Link To This Post Posted: 22 Apr 2017 at 11:41pm
Thanks guys , and Dakota, the drives on this unit are from the end wheels via a clutch mechanism like a JD 7000 planter.
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