What RPM do you run your grain mill at?

[bbognerks]

I just got my 177.7 RPM motor from Surplus Center as well. Also, I was pleasantly surprised that the couplers I ordered from McMaster were Love Joy brand. Less than half the price that Amazon wanted.

I used Spider Couplings from mcmaster.com

6408K11 (buy two... one for each shaft)
6408K84 one of these (the spider)

 

[jakecpunut]

What size bore are you all getting on the couplings from McMaster for the 177.7 RPM 115 VAC GEARMOTOR and Barley Crusher?

 

[bbognerks]

1/2 for the motor. 3/8 for the BC. I HAVE NOT tested them yet, but I am almost certain they will work. I will post back tonight as I had planned on doing some brewery build stuff.

 

[shushikiary]

Just a heads up for you guys, I have a 42R-E bodine motor with almost the same specs as the one you bought, but it's 45 inch pounds of torque instead of 40 and 170 RPM. Here it is: http://www.bodine-electric.com/Asp/ProductModel.asp?Context=8&Name=42R-E%20Series%20Parallel%20Shaft%20AC%20Gearmotor&Model=0680&Sort=11166

I have it hooked up to a monster mill 3 roller mill with the normal sized rollers but SS. It's direct drive with a L90 love joy connector, 1/2" on the MM drive shaft and 3/4 on the motor.

The mill works fine and has enough power for DRY grain, it easily turned 5 lbs of grain into flour the first time I used it (.035 gap).

HOWEVER when I conditioned my grain (wetting it so the husks dont shatter and I get a VERY VERY nice crush with the husks intact) the mill will EASILY bind if I put more than a handful of grain in it at a time. 45 inch pounds of torque just isnt enough in direct drive.

I've ordered (but have not received yet) some ANSI 25 chain sprockets from mcmaster carr that will allow me to double the torque and halve the RPM. (18 tooth for the 3/4 and 36 tooth for the 1/2), ANSI 25 chain is rated for 140 pounds of sheer, so it should be fine sense 90 inch pounds is 8 foot pounds of torque.

Hopefully that will solve my mill binding issue with conditioned grain.

 

[bbognerks]

Just to expound on the above, 3 roller mills require more torque than 2 roller mills, or so I've heard. I will also test some conditioned grain to see if I run into the same problem with my 2 roller Barley Crusher.

 

[RDWHAHB]

Yikes. I would think that 40 in-lb. would have been plenty. Thats almost 500 ft-lbs. We'll see, I've got all the parts. I've got the 2" rollers.

 

[bbognerks]

Wrong way. 40 in lbs is 3.333 ft lbs

 

[RDWHAHB]

and i'm an idiot.

 

[bbognerks]

What size bore are you all getting on the couplings from McMaster for the 177.7 RPM 115 VAC GEARMOTOR and Barley Crusher?

1/2 for the motor. 3/8 for the BC. I HAVE NOT tested them yet, but I am almost certain they will work. I will post back tonight as I had planned on doing some brewery build stuff.

I checked these tonight. The Barley Crusher is 3/8, but VERY tight. I had to tap on it a bit to get it on. The motor is 1/2 and not nearly so difficult to put on.

 

[Bernie Brewer]

220, 221, whatever it takes.

 

[Seabee John]

I'm out of wall space

The cabinet is more or less done... just window dressing at this point, so I figured I'd post a few more photos and wait patiently for your praise...


all closed up

assembly

chute door closed

Chute open and ready to go

That's about it.... did a test run and it was crushing at a rate of 5lb/min.

 

[MX1]

My drill does not have enough torque.....will look into the motor drive in a few months, out of money right now...lol

Tim

 

[jakecpunut]

I checked these tonight. The Barley Crusher is 3/8, but VERY tight. I had to tap on it a bit to get it on. The motor is 1/2 and not nearly so difficult to put on.

Thanks for the info! would you have went with the bigger size for the BC if you had a do over?

 

[bbognerks]

No. If you go with the bigger size, I would think it would make it lopsided. There is only a single set screw on the collar, so it needs to be pretty tight to be centered. 1/2 would have been way too big. If it's too tight, just take some sand paper/emery cloth to it. That's what I did and it worked a treat. I still had to tap it on, but it was very minimal force.

 

[bbognerks]

I'm out of wall space

That's about it.... did a test run and it was crushing at a rate of 5lb/min.

That's really nice Seabee John. Very well done.

 

[BrewBeemer]

Yikes. I would think that 40 in-lb. would have been plenty. Thats almost 500 ft-lbs. We'll see, I've got all the parts. I've got the 2" rollers.

I feel sorry for those rollers as 500 ft/lbs TQ would snap 2" in half unless they were made of 4130 ir 4140 chromoly steel. The motor must be mounted on 2" box tubing 3/8" wall thickness, thinking a 482" FE engine to maintain those torque numbers and around the 3,700 rpm range. Storage of a 1,000 pound grain mill must be considered also.

 

[RDWHAHB]

I feel sorry for those rollers as 500 ft/lbs TQ would snap 2" in half unless they were made of 4130 ir 4140 chromoly steel. The motor must be mounted on 2" box tubing 3/8" wall thickness, thinking a 482" FE engine to maintain those torque numbers and around the 3,700 rpm range. Storage of a 1,000 pound grain mill must be considered also.

Thanks. I thought I already made the public record of my idiocy fairly clear...but that clear it up for those who weren't sure.

 

[BrewBeemer]

Toss in "in/oz" or Nm torque numbers enough for the brain to explode.
I was just picking on ya, it's my nature to have fun and tease people that can't hit back like the wifey.
On my MM3.2 it is planned with turning at 110 rpm's, I can wait while the MLT is
heating up having the bare minimum of flour produced. The bushings will like this lower rpm also plus the crush results vs milling or shredding at higher mill rpm's.
Do not forget those family or curbside threadmills as they have 1 1/2 to 3 HP 90 VDC motors with a heavy flywheel and speed control that maintains constant rpm no matter the loading torque applied. They can work as a variable rpm mill motor if you include a jackshaft, cheap or as freebies helps the build.

 

[bbognerks]

Tease? I don't recall any funbags in your post.

 

[BrewBeemer]

Tease? I don't recall any funbags in your post.

The fun begins especially during summer months around the freezer sections of grocery stores. I wired up many Hussman cold sections, plenty of eye candy you bet. Hell met the wife looking around that way.

 

[RDWHAHB]

no worries. Looking awesome Seabee

 

[Hang Glider]

Great looking build, Seabee! Love the chute instead of the "drop into bucket" design!

 

[RDWHAHB]

Got around to making a new base and hopper. Put the motor on too. No problem starting loaded! Pics to follow.

 

[RDWHAHB]

I will replace the loose wires with a 4 wire cable & plug in connection, but this was a do it without going to the store kind of day. Also helps explains some randomness like copper solder couplings! There is groove that the bucket lid fits on. Fwd-Off-Rev switch.

 

[BrewBeemer]

I'm out of wall space

Not unless your ceiling ia already occupied with equipment pulled up by small block and tackle units.

 

[BrewBeemer]

Just a heads up for you guys, I have a 42R-E bodine motor with almost the same specs as the one you bought, but it's 45 inch pounds of torque instead of 40 and 170 RPM. Here it is: http://www.bodine-electric.com/Asp/ProductModel.asp?Context=8&Name=42R-E%20Series%20Parallel%20Shaft%20AC%20Gearmotor&Model=0680&Sort=11166

I have it hooked up to a monster mill 3 roller mill with the normal sized rollers but SS. It's direct drive with a L90 love joy connector, 1/2" on the MM drive shaft and 3/4 on the motor.

45 inch pounds of torque just isnt enough in direct drive.

I've ordered (but have not received yet) some ANSI 25 chain sprockets from mcmaster carr that will allow me to double the torque and halve the RPM. (18 tooth for the 3/4 and 36 tooth for the 1/2), ANSI 25 chain is rated for 140 pounds of sheer, so it should be fine sense 90 inch pounds is 8 foot pounds of torque.

Hopefully that will solve my mill binding issue with conditioned grain.

It's a bad idea to have sprocket drives that repeat for set in wear purposes, odd count for even wear sprocket wear like 26:53 vs 26:52.
Your MM 3 roller 1.5" or 2" diameter rollers? Your talking 1.33% more torque required turning 2" vs 1.5" rollers.
Adding a chain and sprockets would be a bad idea your dealing with flour dust and grain grit wearing away the lubed chain drive system.
I would use HTD8 Timing belt with sprockets or better yet L Timing belt with sprockets in 1/2" or 3/4" width.
A dry clean long life system even under these abrasive conditions.

 

[RDWHAHB]

It's a bad idea to have sprocket drives that repeat for set in wear purposes, odd count for even wear sprocket wear like 26:53 vs 26:52.
Your MM 3 roller 1.5" or 2" diameter rollers? Your talking 1.33% more torque required turning 2" vs 1.5" rollers.
Adding a chain and sprockets would be a bad idea your dealing with flour dust and grain grit wearing away the lubed chain drive system.
I would use HTD8 Timing belt with sprockets or better yet L Timing belt with sprockets in 1/2" or 3/4" width.
A dry clean long life system even under these abrasive conditions.

I've shown how savvy I am at gearing, but 1.33% sounds low to me.

 

[BrewBeemer]

I've shown how savvy I am at gearing, but 1.33% sounds low to me.

My bad, 1.33 times more TQ to drive 2" vs 1.5" roller mill.
I have a industrial sealed 1/3 hp Baldor with Precision Gear worm drive
mounted as a single unit, dang thing only has 29.16 rpm output at 565 in/lbs TQ.
I'll have to gear it up, thinking 3/4" L Timing belt to 110 rpm's, this will drop the TQ down to 149.77 in/lbs for the MM3-2.0 mill. I believe is should handle it even starting with a loaded hopper. For free I can't complain as it listed over $700.

 

[Seabee John]

Not unless your ceiling ia already occupied with equipment pulled up by small block and tackle units.

I've got overhead racks for lumber storage, ladder storage, and a f' load of lighting... so yeah... I'm out of space. Floated the idea of building a shed past the SWMBO today... you know... for the yard tools and such... My idea was not well received. She said it was time to focus less on building "my" stuff and start working on building "her" stuff.

oh the drama

 

[BrewBeemer]

Floated the idea of building a shed past the SWMBO today... you know... for the yard tools and such... My idea was not well received. She said it was time to focus less on building "my" stuff and start working on building "her" stuff.
oh the drama

This is proof all women's minds are interconnected to each other.
I can't talk my 19' kayak is hanging from the garage ceiling (bad back but can not part with it) plus many other large items, BMW fairings of the 70's $$$$$$$.
The large tool shed requiring power, water, gas heating and drain didn't make it past the War department at this end.
If I could only buy the neighbors house and knock it down for a 10 car garage, shop off the side, brewery on the other side. The pisser they keep the 3 car garage empty, lawnmower rake and broom, I can taste the extra storage.
Lack of funds stopped that idea at the dream stage.
Sunny weather the 60's plus for weeks, 1 1/2" rain to begin tomorrow AM.