Ss Brewing Technologies Giveaway!

Home Brew Forums > Home Brewing Beer > Automated Brewing Forum > AC to DC conversion / small gearbox
Reply
 
LinkBack Thread Tools
Old 05-22-2014, 02:29 AM   #1
pricedawg
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2013
Posts: 37
Liked 2 Times on 2 Posts

Default AC to DC conversion / small gearbox

Hoping you guys can help me. I am looking to make an automatic hop dropper that will drop my hops into the boil via rotating disc. Think lazy susan with a hole in it.

Two questions: What is the best way to convert AC to DC for a small hobby style gearbox/motor?

Also, what gear ratios would I need to drive a lazy susan that will support/spin only aboue 2 pounds? I really only want it to be the speed of a rotisserie (which by the way will not work because it spins in a different direction each time it is started)

Thanks for any input you can give me.

__________________
pricedawg is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 02:38 AM   #2
bigwardog
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2014
Posts: 31
Liked 12 Times on 4 Posts
Likes Given: 1

Default

what sort of voltage/amperage? would a wall wart work?

__________________
bigwardog is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 03:37 AM   #3
ClaudiusB
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2007
Location: El Paso, Texas
Posts: 1,274
Liked 60 Times on 51 Posts
Likes Given: 117

Default

Quote:
Originally Posted by pricedawg View Post
Hoping you guys can help me. I am looking to make an automatic hop dropper that will drop my hops into the boil via rotating disc. Think lazy susan with a hole in it.

Two questions: What is the best way to convert AC to DC for a small hobby style gearbox/motor?
Purchase a power supply from ebay based on your motor's requirement.

Quote:
Also, what gear ratios would I need to drive a lazy susan that will support/spin only aboue 2 pounds?
Look at the model cars, airplane servo motors.

How many hop drop positions will you have?
How do you plan on stopping your dropper at the correct position?

My hop dropper has four positions and is controlled by my PLC.
ClaudiusB is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 10:35 AM   #4
pricedawg
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2013
Posts: 37
Liked 2 Times on 2 Posts

Default

Mine will be controlled by the hot wire output from my alarm on my timer(in theory). I will have to position my drop cups based on the distance the lazy Susan travels over the alarm cycle. It should be a simple operation. It will take some trial and error before I cut the cups out. I have a modified Kal clone, so no PLC for me


Sent from my iPhone using Home Brew

__________________
pricedawg is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 10:39 AM   #5
rekoob
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
rekoob's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Norfolk, VA
Posts: 967
Liked 43 Times on 38 Posts
Likes Given: 2

Default

Quote:
Originally Posted by ClaudiusB View Post
My hop dropper has four positions and is controlled by my PLC.
Pic please.
__________________
rekoob is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 01:04 PM   #6
pricedawg
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2013
Posts: 37
Liked 2 Times on 2 Posts

Default

Claudius, I am planning on 5 positions at 1.5 rpms. That would allow me to run the alarm for 8 seconds for each position. It's just an idea and may not work. I was lucky in that I did find the 120vac 1.5rpm motor online last night for $12. The turntable will be two round sheets of PVC at 12" diameter. I will determine the cup spacing once I am able to run off the alarm


Sent from my iPhone using Home Brew

__________________
pricedawg is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 02:32 PM   #7
ChuckO
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
ChuckO's Avatar
Recipes 
 
Join Date: Oct 2008
Location: Keyrock, WV
Posts: 901
Liked 79 Times on 71 Posts
Likes Given: 12

Default

I can picture a geneva mechanism set up with a turntable, indexing one position for each revolution of a motor. A switch mechanism could easily allow for one revolution of the indexer via pushbutton or computer control. It shouldn't be too hard to build from PVC or lexan sheets. There are plenty of plans and dimension calculations available on the web.

The only problem that I forsee is humidity from the boil kettle causing hops to stick to any chute or dispensing mechanism and not fall into the boil.

__________________
ChuckO is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 03:25 PM   #8
ClaudiusB
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2007
Location: El Paso, Texas
Posts: 1,274
Liked 60 Times on 51 Posts
Likes Given: 117

Default

Quote:
Originally Posted by rekoob View Post
Pic please.
My hop dropper was built in early 2008 and still running strong.
The gear motor is a 24 VDC 1 RPM.
done1.jpg   hop_dispenser_1-16-.jpg   hop_dispenser_1-15-.jpg   hop_dispenser_1-34-.jpg   hop_dispenser_1-30-.jpg  

__________________
My Brewery Pics
Grain Mill Glycol Chiller
Keg Washer
ClaudiusB is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2014, 06:07 PM   #9
pricedawg
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2013
Posts: 37
Liked 2 Times on 2 Posts

Default

Nice. Saw your pics online over the last few days. I thought it was much larger


Sent from my iPhone using Home Brew

__________________
pricedawg is offline
 
Reply With Quote Quick reply to this message
Old 06-01-2014, 02:19 AM   #10
pricedawg
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2013
Posts: 37
Liked 2 Times on 2 Posts

Default

Rimageuploadedbyhome-brew1401588108.581578.jpgok. Here it is!


Sent from my iPhone using Home Brew

__________________
pricedawg 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
Anyone know where I can get a 10-1 gearbox for motorizing a grain mill BVilleggiante All Grain & Partial Mash Brewing 1 12-04-2012 01:33 AM
Small space, small batch? charlieree Beginners Beer Brewing Forum 3 10-25-2011 11:34 AM
using open small fridge to cool small insulated closet? Budzu DIY Projects 16 03-18-2009 10:05 PM
Small brewpot/small MLT concerns STAD All Grain & Partial Mash Brewing 13 11-04-2008 04:52 PM
Mash Tun Conversion - 1/4" nipples too small? Jonnio DIY Projects 3 03-09-2008 12:26 AM