New Mill Motor

[Parks]

Just ordered this -

http://www.motiondynamics.com.au/speed-con...ed-control.html
http://www.motiondynamics.com.au/dc-motors...or-450-rpm.html

I will take some photos and report back once I get them set up.



Couldn't see, but has anyone else ordered from motiondynamics on here? I know there's a few with Oatley motors which I assume are pretty similar. I opted for the 24V and 400W to ensure I had buttloads of power.

I've also got a custom made mill with a good mate sitting, waiting, on his $1m+ integrex machine waiting for me to tell him the pulley sizes I need

 

[pcmfisher]

What are you going to power your motor with?

 

[QldKev]

Just ordered this -

http://www.motiondynamics.com.au/speed-con...ed-control.html
http://www.motiondynamics.com.au/dc-motors...or-450-rpm.html

I will take some photos and report back once I get them set up.



Couldn't see, but has anyone else ordered from motiondynamics on here? I know there's a few with Oatley motors which I assume are pretty similar. I opted for the 24V and 400W to ensure I had buttloads of power.

I've also got a custom made mill with a good mate sitting, waiting, on his $1m+ integrex machine waiting for me to tell him the pulley sizes I need

Haven't used them, but def a good looking motor.

With the speed controller do you still get all the torque as revs are reduced? Otherwise since you will run the motor at about 1/3 speed you would hate to result in 1/3 torque, cause that would be about 133w worth and could kill the milling.

Or do you mean when you mentioned the pulleys you are going to run a pulley setup from the motor to run the mill, reducing it to the 1/3 speed. Cause then with the extra torqe of the gearing it would have sitloads of power to turn the earth.


QldKev

 

[Parks]

What are you going to power your motor with?

Just looking into that now. May have to start with 2 car batteries in series. Wondering if a 50A 24V car charger would work...

http://www.crazysales.com.au/new-12v-24v-3...power-tool.html

-- my brother has a thousand batteries out of his 24v 4x4 so I'll start with that option.

 

[Parks]

Haven't used them, but def a good looking motor.

With the speed controller do you still get all the torque as revs are reduced? Otherwise since you will run the motor at about 1/3 speed you would hate to result in 1/3 torque, cause that would be about 133w worth and could kill the milling.

Or do you mean when you mentioned the pulleys you are going to run a pulley setup from the motor to run the mill, reducing it to the 1/3 speed. Cause then with the extra torqe of the gearing it would have sitloads of power to turn the earth.


QldKev

I will get pulleys sorted out so the mill runs at approx 80-100 RPM @ 24V then use the speed control to fine tune. Should be heaps, provided the power source can provide the current draw.

 

[real_beer]

Just ordered this -

http://www.motiondynamics.com.au/speed-con...ed-control.html
http://www.motiondynamics.com.au/dc-motors...or-450-rpm.html

I will take some photos and report back once I get them set up.



Couldn't see, but has anyone else ordered from motiondynamics on here? I know there's a few with Oatley motors which I assume are pretty similar. I opted for the 24V and 400W to ensure I had buttloads of power.

I've also got a custom made mill with a good mate sitting, waiting, on his $1m+ integrex machine waiting for me to tell him the pulley sizes I need

I've got an Oatley motor which works great using the 12volt option. Your Dayton motor is longer than the Oatley but will be a lot easier to fit & adjust with that mounting bracket.
Have you thought of using a Spider coupling? I look forward to seeing the photos.

 

[Parks]

Have you thought of using a Spider coupling?

No, because I want to step the RPM down from 400. Plus I have a free source of custom made pulleys which is good

 

[Parks]

Wondering if a 50A 24V car charger would work...

I'm actually thinking this won't work as the charger monitors / regulates it's output as to not damage the battery it's charging. Probably complicating the solution too when it'd be fairly easy to get a few car batteries (and it's in the shed so room is no issue) and run them in series.

 

[real_beer]

Plus I have a free source of custom made pulleys which is good

When its up & running you might be able to earn your mate a few $'s supplying fellow brewers if they take up your idea.
Your lucky to have a good supply of batteries on hand, I have to wheel my mill out to the car at the moment until I fit a power supply :icon_cheers:

 

[QldKev]

I think the battery charger should work, as it's not a smart charger just a taper charger.

Also depending on the specs of the mill you may be able to get a way with running it on 12v. (like we do with the Oatley 24v 250w motor). Would make like a bit easier to have just 1 batter around, and if you need the extra speed / grunt just and another battery.

QldKev

 

[mfeighan]

I think the battery charger should work, as it's not a smart charger just a taper charger.

Also depending on the specs of the mill you may be able to get a way with running it on 12v. (like we do with the Oatley 24v 250w motor). Would make like a bit easier to have just 1 batter around, and if you need the extra speed / grunt just and another battery.

QldKev

With pwm you shouldnt loose much/any torque it just pulses on and off real fast to give speed control

 

[mfeighan]

I think the battery charger should work, as it's not a smart charger just a taper charger.

Also depending on the specs of the mill you may be able to get a way with running it on 12v. (like we do with the Oatley 24v 250w motor). Would make like a bit easier to have just 1 batter around, and if you need the extra speed / grunt just and another battery.

QldKev

With pwm you shouldnt loose much/any torque it just pulses on and off real fast to give speed control

 

[Parks]

When its up & running you might be able to earn your mate a few $'s supplying fellow brewers if they take up your idea.

I waited patiently for 18 months for my mill to get finished so while free is good it's not always convenient

 

[real_beer]

I waited patiently for 18 months for my mill to get finished so while free is good it's not always convenient

Oh yeah, I was actually thinking of the pulleys not the mill. Others might have a hard time sourcing one that fits the thread on the motor if they liked your set-up.
At least you'll be able to tell others what sizes they need to get when your finished. I think most would probably try the 12volt supply & spider coupling option first & refine it later if they needed to. I hope you don't have to wait 18 months to get the pulleys

 

[Parks]

...I hope you don't have to wait 18 months to get the pulleys

Me too!

-- I think I'll pull some sprockets of my missus' mountain bike and *******ise the chain if need be (as the motor comes with a sprocket). That would also serve as a good indicator of required pulley size.

 

[Parks]

Hooked this up to the car battery yesterday to give it a quick look - it's gonna have sh!tloads of torque even run at 12V

Going to find an old, hopefully free bike to rip a sprocket and chain off for a temporary drive over the weekend. Will post photos once it's going

 

[Parks]

-- and I am so impressed with how solid the motor is, weighs a good 10kg I would reckon.

 

[Parks]

- skip 1:30 in, this one's just the end of the milling.

Sorry about the poor quality - iPhone movie.

I will take a decent one soon, but if I waited to do a decent one before posting it probably wouldn't happen

I have it running at 12V. The mill is made by my aforementioned friend. The rollers are approx 7.5cm diameter and about 8cm long (I can't remember exactly). I knocked up the hopper a few weeks back out of some scrap 3mm aluminium checker plate. It's a bit rough but does the job nicely. It holds about 14kg full.

It's a bit slow at the moment. Runs approximately 60 RPM taking about 3min per kilo. This isn't a huge issue as it was taking me longer than that by hand. I got my best efficiency to-date on yesterday's batch (80% according to Beersmith, was getting about 72%).

I ripped the drive sprocket (if that wasn't obvious ) and chain off an old bike. I had to grind down the width of the sprocket which came with the motor as it was too thick. Quick calc suggests approximately 1 to 4 gear reduction on the sprockets.

You will note that I can slow down and start the mill easily even well full - great success.

 

[QldKev]

- skip 1:30 in, this one's just the end of the milling.

Sorry about the poor quality - iPhone movie.

I will take a decent one soon, but if I waited to do a decent one before posting it probably wouldn't happen

I have it running at 12V. The mill is made by my aforementioned friend. The rollers are approx 7.5cm diameter and about 8cm long (I can't remember exactly). I knocked up the hopper a few weeks back out of some scrap 3mm aluminium checker plate. It's a bit rough but does the job nicely. It holds about 14kg full.

It's a bit slow at the moment. Runs approximately 60 RPM taking about 3min per kilo. This isn't a huge issue as it was taking me longer than that by hand. I got my best efficiency to-date on yesterday's batch (80% according to Beersmith, was getting about 72%).

I ripped the drive sprocket (if that wasn't obvious ) and chain off an old bike. I had to grind down the width of the sprocket which came with the motor as it was too thick. Quick calc suggests approximately 1 to 4 gear reduction on the sprockets.

You will note that I can slow down and start the mill easily even well full - great success.

Nothing stopping that from turning. If you want it faster run it on 24v and you will get double the speed. Great to see another idea implemented.

QldKev

 

[Parks]

Yeah, I will see how I go and if I care that it's slow. I don't, at this stage...

I even tried to hold the bike crank while it was going - couldn't do it...