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Implement Alley Discussion Forum

7000planter

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Christopher Tod

12-23-2006 18:12:51

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I have a 7000JD planter.Last few years it has planted more than the charts indicate so I keep setting it down until i achieve what I want after an acre or two of over planting. I take the units out in the spring blow them out with air and turn with a wrench to see if the fingers are all activating they are the tire pressure seems to be fine .Any other suggestions to fix this problem.????

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JMS/MN

12-24-2006 11:08:43

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Re: 7000planter in reply to Christopher Todd, 12-23-2006 18:12:51

Chart in the manual shows planting up to 7 mph. Lately JD has been telling us at clinics that planting rate is quite variable above 4 1/2 mph. Tends to overplant. Logic would say the fingers would skip some picking up at exscessive speed, but apparently they pick up doubles at higher speeds. Also check the backing plates for wear in the pickup area, rust spots accumulate and damage the seed. Emory cloth will clean up the rust, but if wear spots are apparent, replace the plate. Brushes are cheap to replace, check for broken springs, bent fingers, chaff in the mechanism.

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LA in Wi.

12-25-2006 10:37:04

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Re: 7000planter in reply to JMS/MN, 12-24-2006 11:08:43

JMS,
You heard correctly about seed spacing being more variable above 4 1/2 mph. Some of the planter charts are still refering back to the days when seed populations were in the 20K - 25K per A. Nowadays most planters are running at high 20s and well into the 30s populations. The max that a finger-type meter can run accurately is about 75 rpm; faster than that and extra seeds flow into the belt chamber and into the ground it goes. The faster that meter runs, the more it will overplant, due to sheer centrifugal force of seeds whirling in the finger chamber. I have a meter equipped with a plexiglass cover on it and when I rev it up to high speeds my customers are very surprised to see so many doubles and even triple drops show up on my long horizontal seed belt. My charts show that planting 30" rows, with pop of 32K, at 5 mph ground speed, the meter is spinning at 67 rpm, which a meter in good shape should plant accurately. You increase speed to 6 mph and meter is at 80 rpm; then you are over-reving and you get to buy extra seed you don't need plus all those doubles and triples produce mostly "nubbins".
Plant pop + row width + ground speed = meter rpm.
Unfortunately, most planter manuals do not have these equations so that you can figure out your meter rpm. I'd be lost without my charts.
Best and cheapest maintenance you corn growers can do for yourself is to replace brushes annually (yes, even small acreage growers) and when done planting just take off black plastic cover (Three 1/4 bolts) and shake or blow out residue. With cover off you can see any backing plate wear or any rusted-thru surfaces, how worn the brushes are and if all springs are OK. You can replace the brush in 1-2 minutes...JD or Kinze sell them 2 per pkg. Once the backing plates are worn thru then rust will start in and your accuracy will suffer; this wear will occur at the 2 "speed bumps", just before the brush area. And DO NOT add any oil or rust preservative to this area; it needs to be kept dry.
Those finger meters are great! But like with autos....."Speed Kills". The sins of planting will haunt you for the rest of the growing season.
Sorry for the long speech. Time to enjoy this special day.
LA in WI.

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paul

12-24-2006 23:17:47

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Re: 7000planter in reply to JMS/MN, 12-24-2006 11:08:43

I put an underpowered tractor on my 7000 one year, I had to drive slow.

Wow, that was the best yeilding year I had. Other variables of course, but I _must_ slow down planting. Seemed a much better, dependable stand. Went 4.3 mph, instead of 5-5.5.

--->Paul

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Gerald J.

12-24-2006 08:08:27

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Re: 7000planter in reply to Christopher Todd, 12-23-2006 18:12:51

There are other places that will check and adjust meters besides Deere. Some do better, many charge less for the test. Shoup does them mail order www.shoupparts.com. I had to do a lot of rebuilding on mine and then Deere charged me by the hour to run them in on their test machine. But they do work consistenly good. Nice spacing and an accurate count.

The Kinze bean meters deliver as precise a bean count as the finger units. I found them used from Sean Koogley next to Colfax Tractor parts a year ago, but I had to replace the brushes, still less than $80 a row. Though I know my neighbor planted beans successfully and happily for nearly 25 years with the bean cups and this same planter.

I keep the planter units in plastic tote boxes and covered to keep out bugs, mice, and rust.

The back plates of the finger units have a bump or two, part of the seed selection process, and those do wear down and mess up singulation. After repair and adjustment, mine planted the field count as closely as I know the field area.

Gerald J.

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Christopher Todd

12-24-2006 07:44:38

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Re: 7000planter in reply to Christopher Todd, 12-23-2006 18:12:51

Thanks for the info guys.Some of the things renforced some of the things I thought of.And yes it is corn. I try to buy the largest rounds I can get.The more I think of it I may have been going to fast.Yes we have a Deere dealer they proably have a meter machine. But when you have less than a 100 acres cost has some input on it.I do it because I like and It makes a little money. The bean cups as you all know are even worse. All though there is units that replace the bean cups that cost 100.00$ plus. Thanks again and have a good Christmas....

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LA in Wi.

12-24-2006 07:14:54

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Re: 7000planter in reply to Christopher Todd, 12-23-2006 18:12:51

Christopher,
I have worked on about 1600 finger meters the last few years. That does NOT make me an expert because I see new things that go wrong in them every day. There are basically 3 things that cause finger meters to overplant: 1. Excessive speed...the faster you go the more seed corn you get to buy. 2. Worn parts. 3. Rusted parts.
The "7000" type meters are a very good meter, but have so many parts that get worn. A competent meter repairman should be able to show you what your problem is very quickly. Hopefully he has a machine he can run them on for testing at your ground speed.

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IaGary

12-24-2006 04:20:00

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Re: 7000planter in reply to Christopher Todd, 12-23-2006 18:12:51

Seed size makes some difference to this planter.

If the seeds are small it may pick up doubles.

Are you planting corn?

I assume you have a polulation count monitor.

Is the monitor calibrated correctly? EX- Is the row width entered in correctly?

Gary

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bradk

12-23-2006 19:49:46

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Re: 7000planter in reply to Christopher Todd, 12-23-2006 18:12:51

We took ours to the JD dealer and had them tested and gone through.
They asked what the planting rate was.
I noticed a tremendous increase in planting accuracy after taking them in.Worth the money in my opinion.
~brad

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