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auger drive issue follow up

D

Dave from MN

Well-known Member
Verified- wiring is correct for 110 volt line. Took off Westinghouse motor and put in 1hp high torque farm duty, still will not start uunder partially loaded auger. Motor puller is 2", but the driven pulley on the auger is only an 8", I am thinking that is way too small and should be a 10" or 12". What do any of you think. Electrical cord gooing to it is 25" heavy duty ext cord, 12 gauge, then a cod about 100" of actual solid wire 14 ga, the cord on the motor is 16 gauge, about 10".
 
They are working with me. Giving me what I want to try. They said to bring it in, but with no way for them to try it under a realistic scenario, I dont really want to have to lug it in and back, just to have the same results. The beans in the bin need to be moved asap. Do not have a grain vac.
 
I had a 1hp compressor and a 8hp generator would not run it.
I think your 14 gauge wire is way too small. I'm not an electrician and don't have a voltage drop calculation chart in front of me but it sounds like all you voltage is used up in the resistance of the cord.

You could try a bigger pulley on the auger shaft. That would run it slower but give the motor more leverage to turn it.
 
Combination of VD and too small of a driven pulley.
Those Kilawat units are a real eye opener on voltage and current.
 
Does the motor run without the belt on? Will it drive the auger unloaded? Can you turn the auger manually? If yes is the answer to all these then you either have too much line loss in you power feed(Check the voltage at the motor with the motor running) or you are using too small a speed ratio (4-1 now) and need a bigger driven pulley. See the link for auger speed info.
Auger info
 
Put an 1 1/2 inch pulley on the motor. You will gain torque faster there than going bigger on the driven sheave.

125 foot of cord should be 10 gauge and that short motor cord should be 12 gauge.
 
Dave, I don't know your other particulars. I think your driven pulley is to small. I have 7 augers moving grain and they are all in that 10-12 inch range with about a 2 inch drive.
Maybe you should start a new thread and call out the electricians on the board. Wiring sounds under size to me.
 
A 2" driver on a 8" driven is the same as a 1-1/2" driver and a 6" driven.
What this auger needs is a 1-1/2" driver and a 12" driven.
If there is power out to the grain bins now. Why not throw in a two pole breaker and change all the plugs,receptacles and motor to 240V ?
 
The simplest, cheapest way to go, assuming you have ruled out a mechanical problem with the auger, is to slow it down to where the motor will pull the load. That is a smaller drive pulley and/or a larger driven pulley. I would also replace the 100ft. of #14 with #12 to reduce voltage drop. Full load current on 1h.p.-120volt single phase motor is around 16 amps, so you are at the limit for a 20amp cicuit, not counting voltage drop. You may have to limit the amount of grain going into the auger to reduce the load enough for the motor to operate. All of this will reduce the output of the auger, but at least it will run. If you have 240 volt avaialble that would be a good option too.
 
240 won't cure anything- all he needs is the right pulley ratio and heavy enough wiring. All my portable augers, up to 6 inch, are 110 volt. Only the in-bin and loading augers, all 8 inch, are 240V.
 
Figuring the difference in voltage drop and loss in available torque. Going to 240V on the same sized wiring will increase starting torque by an easy 30-75% .
 
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