planting beans with a corn planter

songbirdfarm

New User
Hi! I'm in a hurry to figure this out, so I'm cross posting in a couple other forums.

I have a two row Allis Chalmers snap coupler corn planter that I use to plant 2-4 acres of flint corn up here in Maine. The previous owner converted it to a three point hitch, and it works great! I've heard that you can change the sprocket arrangement to speed up or slow down the plates - I'm hoping to speed up the planting rate to plant dry beans. Anyone out there have a user manual they could glance at for me for the bean setting?

The current arrangement is a 12 tooth sprocket on the drive shaft and a six tooth sprocket on the seed hopper side, which drops a seed about every 9.5 inches. A little farther apart that what I might like, but it works for our corn. I know that I need a bigger drive sprocket to speed up to a 3-4 inch spacing for dry beans, which I'll need to locate and purchase once I figure out how many teeth I'm looking for. (Anyone have any leads?)

Thanks!
 
We do have been plates in addition to our corn plates. They're sized for the different seeds, but don't help us with plant spacing, unfortunately.

(quoted from post at 11:16:33 05/25/18) Dad's old planters (several different brands) usually had different plates for corn and beans
 
Never messed with a snap coupler, once had an Allis 4 row, it had 4 different sprockets bolted together, you just moved it over to the next sprocket and put the cotter pin back in for your ground speed.
 
It should have different size sprockets alread on it. I don't think that planter had a gear box as some Deeres had.
 
Seed spacing (population) is a basic part of setting up a planter. The operator's manual probably has well written instructions to achieve any population that the planter was designed for. If you know your planter's model number you should be able to find a used manual on e-bay or maybe buy a reprinted copy from a dealer.
 
I sent your msg to my son, who has my AC 2 row of that style. He has the book- hopefully can help you. Watch for a msg from schriffs.....
 
I found a manual! The one seeding chart that seems relevant is for cotton, but with the right seed plates, I don't think that will matter. In case anyone else has this problem, here's the chart.

Anyone out there have an extra 20 tooth drive sprocket for one of these AC snap coupler corn planters? It goes on the bigger shaft on the back, which seems to measure 1.25 inches.


 
On the planter I have the 20 tooth sprocket bolts onto the smaller sprocket.. It only has 10 actual teeth, it only grabs every other link of the flat chain

. A few options here for different population - plate # 310992 has wide gaps to allow several seeds in each cell. I believe this is intended for soybeans.

I added roller chain sprockets to this planter to obtain a higher population - the driver is about the same size as the 20 tooth because there is no clearance for a larger one, but I put a driven one on that is smaller than the smallest flat chain sprocket. They are just sprockets from the fleet store, I drilled the hub to allow for the bolt to go through the shaft.

I have also gone over the field a second time, splitting the row spacing. This allows a half-population setting on each pass, and I ended up with 15 or 20 inch rows with the planter set at 30 or 40 inches. Takes more time but it does the job.
I will try to post pictures of the plate and my sprocket setup.
17146.jpg
17147.jpg
17148.jpg
 
Hi Schriffs,

Thanks for the photos and info. What's the
diameter of your new 20 tooth sprocket?
It looks like I'll need to get newer style
sprocket and chain like you did, can't find
an original part... The original 20 tooth
drive with the 7 tooth driven would give me
the right spacing.

Thanks!
 
7.5 inch diameter. I don't think 8 inch would fit. Mine is 45 tooth, I'm not sure what the chain size is. My driven is a 14 tooth, which would be equivalent to a 20 / 6.22 . To get your 20 / 7 you could use 40 / 14 combination.
 

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