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Implement Alley Discussion Forum

John Deere 350 grain elevator

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Randy-IA

07-22-2005 17:54:01




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Hi , I got one of these JD 350 grain elevators to put hay up in the barn ( needed the length ) . Couple of questions about it , at what pto rpm should it run -Idle speed or 540 ? Has anyone tried putting a electric motor on one ? If so what size sheaves and horsepower of motor ? I have a 2 horse motor that runs at 1725rpm . Will this work or are the horsepower and torque requirements more than what this electric motor( 120-130 volt , cap start , ind. run )could deliver to maintain any chain speed at all ? Thanks for any input ....Randy

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buickanddeere

07-24-2005 22:57:22




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 Re: John Deere 350 grain elevator in reply to Randy-IA, 07-22-2005 17:54:01  
2HP is lots when belted down slow enough. Less chance of busting something should something jam/break. We have used a 1HP 120V on 50 ft Embersol bale elevator since the mid 1950's. Elevator had the slats every 60" of chain. For elevating cobbed corn. Extra slats/paddles are bolted on for 30" spacing. A 1-1/2 HP 240V motor was swapped on along with a larger motor pulley.



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Leland

07-24-2005 05:31:44




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 Re: John Deere 350 grain elevator in reply to Randy-IA, 07-22-2005 17:54:01  
At idle 1 man can bury 6-10 guys in the hay mow as I have done several times and an elect motor that size would stall you are moving a lot of metal and keep plenty of used motor oil on hand to dump on chains on dump to keep it lubed enjoy the work



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JMS/MN

07-22-2005 19:53:28




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 Re: John Deere 350 grain elevator in reply to Randy-IA, 07-22-2005 17:54:01  
If you're using a grain elevator for moving bales you normally run it fairly slow- depends on how much help you have in the haymow, etc. One person loading the elevator- maybe 3-4 bales on it at any one time. I would think a 2 hp motor would work- depending on elevator length. I have an old 2 hp on a 30 foot single chain hay conveyor, but a double chain elevator would pull a bit harder. You would need a jackshaft to reduce speed- use a belt from the motor to the jackshaft, and a chain drive from the jackshaft to the elevator- to get traction. Measure your tractor pto rpm at a comfortable low speed and figure pulley and sprocket sizes to reach that same rpm on the elevator input shaft if you use the motor.

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Randy-IA

07-22-2005 20:59:30




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 Re: John Deere 350 grain elevator in reply to JMS/MN, 07-22-2005 19:53:28  
Hi JMS/MN , This one already has a jack shaft . Or what I'll call a jack shaft . It's the shaft that the power-shaft connects to and runs a chain to the main drive . It can be run from either side by moving the power-shaft . I thought I'd mount the motor on the other side of where the power-shaft is now so if I wanted to run it from the tractor I can . Only thing I'm concerned with otherwise is one belt or two ? Finding the diameter for the sheaves is easy enough , I know a guy that has a chart for that :'] . Anyway , idle speed at the pto is somewhere between 170 and 190 rpm . ( 2400 = 540 or so , 2400/540 =4.44444 , so 800/4.44444 =180 or so ) idle moved the conveyor a little slow so I think 200rpm should be good .

Sorry , I get carried away with explanations and writing in general . Take care ...Randy

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paul

07-22-2005 20:27:55




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 Re: John Deere 350 grain elevator in reply to JMS/MN, 07-22-2005 19:53:28  
Yup, idle speed with a tractor runing it. Slow.

As Jim says, you need to gear down a couple times from electric motor, belt to a jack shaft, chain down to the drive shaft.

I see 2 hp motors on a single chain bale elevator, I see 5 hp 220v electric motors on a big grain elevator but perhaps you can make 2hp work for bales - gear it slower & it might work out.

--->Paul



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Randy-IA

07-22-2005 21:04:23




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 Re: John Deere 350 grain elevator in reply to paul, 07-22-2005 20:27:55  
Hi Paul , If it won't pull it then that'll be a good excuse to buy that Farmall I've been wanting ;>/ Take care ...Randy



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paul

07-22-2005 23:16:03




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 Re: John Deere 350 grain elevator in reply to Randy-IA, 07-22-2005 21:04:23  
:) Can't argue with that logic. :)

I think to use the exsisting pto jack-shaft, you would need to change the sprockets on it. That jack shaft just transfers power, very little speed change typically. To use an electric motor, you need a 2-step speed reduction typically, unless you have some awesome pulley setups. :) You are doing about 10 - 1 right, so a 3 inch pulley for the small side (that would be a tough pull to make a single belt pull on such a small diameter), would be a 27 or so incher on the motor - not real practical.

Better to do it 2-step, a belt for about 1/2 the drop, and a chain for the final, slower drop.

--->Paul

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Randy-IA

07-23-2005 12:06:01




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 Re: John Deere 350 grain elevator in reply to paul, 07-22-2005 23:16:03  
Hi Paul , I guess when I get time I'll go and count the teeth on the existing chain drive sprocket's . I noticed when I was fixing it that the " jack shaft " sprocket was at LEAST 1/2 the diameter of the paddle drive sprocket . I can run it and time the round trip of one paddle up and around , that'll give me the rpm to shoot for , it seemed a little slow during the test run on the tractor but then my wife will be in the barn stacking ;'> . I was wondering , do all power shaft's that hook to the pto have a slip joint for this type of application ? This shaft might but it doesn't move now and with the safety shields on it I can't tell so I don't know if I should yank on it to try and get it to come apart or not . Any suggestions on that ? Stands to reason that it would or the safety shields couldn't have gotten on there . Thanks . Take care ...Randy

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JMS/MN

07-23-2005 13:45:07




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 Re: John Deere 350 grain elevator in reply to Randy-IA, 07-23-2005 12:06:01  
Here's another multi-use option: Build a stand or two wheeled trailer to hold your motor, belted to the input shaft of a three or four speed transmission, with a pto spline on the output shaft. Get the ratios figured out right and it's a portable power unit that hooks to your exising elevator pto shaft. No need to mess with your elevator.



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Randy-IA

07-23-2005 15:00:22




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 Re: John Deere 350 grain elevator in reply to JMS/MN, 07-23-2005 13:45:07  
BINGO ! Have you been in the shop where I work ? The lathe we have in there is set up that way . It has a small 4-speed transmission from a small car with a belt pulley rigged to both ends . A motor on one end and the lathe on the other . It has to be shut down to shift it though . Works great otherwise . ...Randy



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JMS/MN

07-23-2005 15:50:51




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 Re: John Deere 350 grain elevator in reply to Randy-IA, 07-23-2005 15:00:22  
My 1913 South Bend lathe has a motor driving a 3 spd tranny with belts, and the previous owner cut off two of the four-step pulleys. Wasn't thinking of that application when I suggested the motor/tranny idea- just figured it was an option for multiple uses, and means no changeover on the elevator when you switch to a tractor for unloading corn, etc. Did remember a Rube Goldberg contraption at a neighbor's place- just came back from overseas svc in '67 and went to visit him while silo filling. He had a car frame staked to the ground, motor driving a tranny and rear axle. Rim had a rope attached. Rope was a wire stretcher (block and tackle) that was hooked to the cable in the wagon that pulled the false endgate to the rear, pulling off the silage. It worked, but was comical.

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