Mill Motors

[Camo6]

Hi Camo6 - just one more question, is 320mA the no load current draw with your setup? i.e. the mill is just turning with no grain in it?

Cheers Matt, although I like the look of these steel rigs a lot better. Not as ghetto as my old chipboard set of drawers. I didn't adjust the crush on my minimill for wheat and didn't have any issues. Yeah the pic shows it running unloaded. When milling it gets to about 4 amps though it did creep up the other day and even sheared the split pin. But then I took the lid off the bucket underneath and it worked a bit better... :unsure:

A self locking pin is best. This is a round hollow pin with a slit up one side, they are made of hard steel like spring steel. Use a pin just slightly oversize and the slit will close up a little when pressed into the hole locking the pin into place. (sometimes known as selock pins)

I know these as spring pins Labels and would've used them if I had some at hand. Kinda glad I stuck with the split pin though as it worked well as a shear pin when it was under too much load.

 

[zwitter]

Hi Labels
I agree with Camo6 the roll pins are probably a bit strong for shear pin protection. I have upsized the stainless and so far so good?.

James


Sent from my iPad using Tapatalk HD

 

[stux]

Good idea, but I am planning a wheat beer with at least 70% wheat grain in it.. :/

I burnt out my first drill based mill motor. Was cracking a wheat/barley malt bill, but had not homogenized the grist. The motor started chugging when it got to the wheat and let the smoke out.

Now I use my hand/arms to premix the grist in the bucket a bit before dumping into the hopper. And also have a motion dynamics motor

 

[clickeral]

Best place to buy split pins for the shaft?

 

[Camo6]

Bunnings, repco, bursons, any bolt store or hardware.


Just be sure to get the size that is a snug fit for the hole you drilled.

 

[luggy]

Finally found the time to put my mill together, thanks to everyone who answered questions I had along the way.

 

[MattSR]

In only 11 bags of grain, I have found 4 pieces of wood and finally a rock today... a decent sized one about 10mm across..

Motion - is there an ETA for the current limiting supply? The forecast for my mill looks ominous and i shall be checking my grain thoroughly in future!

Cheers,
Matt

 

[motiondynamics]

Matt,
In production as we speak!
Should be here in a few weeks i hope!

 

[MattSR]

Ok cool - will it have a similar footprint to the old controller?

 

[clickeral]

Finally found the time to put my mill together, thanks to everyone who answered questions I had along the way.

20150518_152118.jpg

Where did you get the steel brackets to mount the motor, I am trying to source some

 

[luggy]

I made them up its just 50mm angle from the hardware store

 

[Milk-lizard84]

Howdy all. Just wondering would a 12v 30A 360w power supply be suitable for the motion dynamics mill motor?

 

[luggy]

Sounds about right, motion dynamics posted a link earlier in the thread to a suitable one try looking back a bit

 

[Mr B]

Yep, I use a 30A power supply, all good.

 

[MattSR]

Yep, 30A @ 12V is perfect.

 

[Florian]

Finally found the time to put my mill together, thanks to everyone who answered questions I had along the way.

20150518_152118.jpg

Wow, that hopper looks familiar...

 

[Black n Tan]

Matt,
In production as we speak!
Should be here in a few weeks i hope!

Any update or eta?

 

[Grainer]

keen to get on this when modifications are made

 

[Black n Tan]

I sent an email earlier in the week and got told it would be available in the next week or so.

 

[Black n Tan]

I ended up buying a lovejoy coupling for US$25 (about $35 ozzie) delivered, which seems pretty reasonable. They will mix and match the ends if you send them a message. So I got a custom 3/8"x12mm coupler for the monster will MM3.

http://www.ebay.com.au/itm/CNC-Stepper-Motor-Lovejoy-Coupling-8mm-X-12mm-spider-/330482600648?pt=LH_DefaultDomain_0&hash=item4cf24c4ac8

 

[drofmob]

I sent an email earlier in the week and got told it would be available in the next week or so.

I'm just waiting for the new current limiting model to be available as well.

 

[Grainer]

stuck on the PSU..not sure which one I should be buying??

 

[zwitter]

Hi Grainer
There are several links in this thread for power supply on ebay. That os where I got mine and it works a treat. There are also some warnings against a particular seller on ebay as they miss label their supplies as being higher current then they actually can deliver.

James


Sent from my iPad using Tapatalk HD

 

[Grainer]

yeah.. but it does not have specifics about current amps etc..

suggested is.. but is this the best one??: 12v 30A 360w

 

[zwitter]

Yep
12 volts
30 amps

I put one of the volt and current meters on mine as mentioned in a post in this thread and I have seen it hit about 17 amps doing some wheat but it is usually about 10 to 12 amps with malt. It idles about 1 amp with no grain.

The speed slows down when it is under load and I have to turn the knob up to desired speed under load. It chewed through about 6kg in a bit over a minute and a half.
Power supply did not even warm up.

I have a stainless steel 2mm shear pin in mine and have broken it twice but is simple to replace and saves breakages in the mill.

Jamès


Sent from my iPad using Tapatalk HD

 

[MattSR]

I have the larger older Mill Master Mill, and it draws a good 20+ amps.

The way I set the speed is to have the speed control at zero RPM, fill up my hopper, switch on the motor and gradually increase the speed on the controller until I get a nice steady, slow crush. Since I use a Braumeister, a rougher crush is best so this method works well for me.

Also I used the 12V 30A eBay supply as well with the current meter I posted about above.

Hope this helps

Cheers,
Matt

 

[Camo6]

I've got a 35A psu that works well. I'll try and link the seller when I get on the pc later this avo Grainer.

 

[zwitter]

Hi MattSR

I have a braumiser with Matho controller running the Ard Bir software so same kind of setup. I do same thing set mill, fill hopper, turn on and wind up the power until it is in the sweet spot. Love the sound and the smell.
James


Sent from my iPad using Tapatalk HD

 

[MattSR]

It is a delicious sound indeed

I always prefer a slow crush to a fast one, so I just wind up the wick just enough to get it turning at a rate similar to what I would get by hand cranking it. The PWM controller just holds it there nicely!

 

[Camo6]

stuck on the PSU..not sure which one I should be buying??

Grainer, I used this seller. I bought the 400W, 33A model for about $40 delivered. Pretty quick delivery from memory and the unit seems to stack up to its rating.