Home Brew Forums > Home Brewing Beer > DIY Projects > Chillers and Stir Plates > DIY Stir Plate Question
Reply
 
LinkBack Thread Tools
Old 07-03-2012, 06:23 AM   #1
brewzofo1
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2011
Location: huntington beach, ca.
Posts: 67
Liked 1 Times on 1 Posts

Default DIY Stir Plate Question

I'm putting togeather a Stir Plate from many resorces online and here. I did a temporary wire of all the connections before making them permenant. I turn the switch on and the stir plate runs. But it only runs on one speed. I turn the potentiometer and nothing happens. All the wiring is correct. Sometimes I have to give the fan a push to get it going. And to me the fan seems to run too slow. The fan is a 4 x 4 size and 12v I bought at Fry's. Is the fan no good? Or did I miss something.

__________________
brewzofo1 is offline
 
Reply With Quote Quick reply to this message
Old 07-03-2012, 07:24 AM   #2
slamram99
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2011
Location: baton rouge, Louisiana
Posts: 21
Default

what is your power supply specs?

__________________
slamram99 is offline
 
Reply With Quote Quick reply to this message
Old 07-03-2012, 07:27 AM   #3
Chefencore
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Columbus, OH
Posts: 339
Liked 7 Times on 7 Posts
Likes Given: 3

Default

Could be a few things. Disclaimer - I am not an electrician, or an engineer, and am in no way qualified to speak on this subject, other tan having built a stir plate, and destroyed a few power sourced and fans in the process.

I too had to spin the fan to get it going a few trys. Is there anything attached to it yet, like washers/magnets?

It could be wired incorrectly (like i said - destroyed a lot of components).

The switch/potentiometer might not be able to pass enough power to turn the fan. I opted for no switch just to get as much amps as possible pushed thru to the fan.

Could you take a picture of your wiring, and include any specs on the switch/ potentiometer?

__________________

"What do you use to weigh down your hop spider?"

"Hops..."

Chefencore is offline
 
Reply With Quote Quick reply to this message
Old 07-03-2012, 07:40 AM   #4
brewzofo1
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2011
Location: huntington beach, ca.
Posts: 67
Liked 1 Times on 1 Posts

Default

I am an electrician. I work with schematics. Power supply is 12v. I started off with a 5v cord and found a 9v cord. Then the 12. Yes I have a washer and magnets glued to the fan.

__________________
brewzofo1 is offline
 
Reply With Quote Quick reply to this message
Old 07-03-2012, 10:21 AM   #5
ARKAY
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2011
Location: PORTLAND, OR
Posts: 23
Default

if your wires are hooked up right then it could be a busted pot. does the fan go faster if you connect it directly to power? If so I'd say get a new pot. I assume you used a 1/4w part.

__________________
ARKAY is offline
 
Reply With Quote Quick reply to this message
Old 07-03-2012, 10:54 AM   #6
tracyk
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
tracyk's Avatar
Recipes 
 
Join Date: Feb 2012
Location: Down the road with the frogs and crickets, TX
Posts: 148
Liked 21 Times on 19 Posts
Likes Given: 1

Default

I built mine with a 120mm fan also from Frys, but ended up using a 9v 300ma power supply that I had sitting around. This gave me the best range of speed with the Rat Shack pot. Even though I also tested it out with a 6v 300ma power supply, it did not give me enough speed on my fan to create a vortex to just stir water when testing.

__________________
tracyk is offline
 
Reply With Quote Quick reply to this message
Old 07-03-2012, 03:17 PM   #7
TheGAC
Beer GOOOOD! Napster BAD!
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
TheGAC's Avatar
Recipes 
 
Join Date: Dec 2007
Location: Keizer, Oregon
Posts: 175
Liked 4 Times on 4 Posts
Likes Given: 34

Default

I know that when I built my stir-plate, I had to put multiple washers in between the magnet and the fan. My magnets were strong enough that they stopped the fan from spinning.

__________________
Blackened Brew
Keizer, Oregon

Primary: WTF, it's empty!
Secondary: WTF, it's empty!
On-tap: WTF, it's empty!
On-deck: Raging Red Irish Ale
TheGAC is offline
 
Reply With Quote Quick reply to this message
Old 07-03-2012, 05:22 PM   #8
brewzofo1
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2011
Location: huntington beach, ca.
Posts: 67
Liked 1 Times on 1 Posts

Default

Okay. I changed out the fan. I found a smaller fan lying around the house. I think it's like 3". So I connected it to the stir plate and everything works fine now. Rheostat works like it suppose to. Thank you guys n gals. I hope to be brewing my next Pliny batch this Saturday.

__________________
brewzofo1 is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Another stir plate Question blaze379 Chillers and Stir Plates 7 06-20-2012 08:26 PM
Stir Plate Fan Question Coastie Chillers and Stir Plates 7 05-01-2012 11:39 AM
Stir Plate Question...way too HOT Catnip_X07 Chillers and Stir Plates 17 11-20-2010 02:25 PM
DIY Stir-Plate Question! INeedANewHobby Chillers and Stir Plates 12 03-11-2009 06:56 PM
Stir plate question redtail28 Chillers and Stir Plates 5 12-29-2007 05:14 AM



Newest Threads

LATEST SPONSOR DEALS