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  1. #1
    Join Date
    Sep 2011
    Location
    Strafford, NH, USA
    Posts
    411

    Default Adding motor to hand crank extractor

    I have an old (very old) 9 (medium) frame extractor that I got from my mentor (~75 years old) that used to be his fathers back in the day. It is a stainless tank with an iron frame rest/basket. I had the basket powdercoated last year and it is worlds better, but after hand cranking again this year I really want to upgrade to a motor.

    I see the motor conversion kits available from Maxant and others, but at ~$350 I am thinking it isn't worth it and being the DIY kind of guy I am would like to "rig" up something myself. Does anyone have a suggestion or solution for finding a cheaper motor/gear set I could rig up?

    I guess I should also say that I don't have a treadmill or the desire to take one apart. Maybe just any idea of what to search for to buy off the shelf parts for horizontal to vertical drive and motors...

    Thanks!
    Dan
    Last edited by Fishman43; 09-20-2013 at 12:51 PM.

  2. #2
    Join Date
    May 2010
    Location
    Cupertino, CA, USA
    Posts
    280

    Default Re: Adding motor to hand crank extractor

    I'm facing the same problem so I was hoping you would get some responses. I've been using an AC electric drill with a dimmer switch for speed control and it works but not so great. What is needed IMHO is a DC motor with a speed control like an electric airplane motor and speed control (or treadmill, or trolling motor, or cordless grinder, or cordless drill, or auto window motor, or ...). That may not be so cheap for the power needed. If you insist on a right angle gear box, adapters at the motor side and extractor axle side might be the most hassle, plus you need a gear reduction that's about right. But I guess your hand crank already has the right angle "gear box". Please post what you discover.

  3. #3
    Join Date
    Nov 2011
    Location
    Rader, Greene County, Tennessee, USA
    Posts
    6,742

    Default Re: Adding motor to hand crank extractor

    Assuming your existing crank setup already does the horizontal/vertical rotational change as part of a gear reduction assembly, I'd explore removing the "crank" part of the crank handle, and replacing it with a heavy duty AC corded drill. Just chuck the remaining shaft into the drill chuck. Find a way to secure the drill to the extractor.

    Add in a speed controller like this and extract away ...
    http://www.cmlsupply.com/router-or-p...Fc2f4AodbVYAFQ
    Graham
    USDA Zone 7A Elevation 1400 ft

  4. #4
    Join Date
    Dec 2005
    Location
    Brasher Falls, NY, USA
    Posts
    28,415

    Default Re: Adding motor to hand crank extractor

    Quote Originally Posted by Fishman43 View Post
    I have an old (very old) 9 (medium) frame extractor that I got from my mentor (~75 years old) that used to be his fathers back in the day. It is a stainless tank with an iron frame rest/basket. I had the basket powdercoated last year and it is worlds better, but after hand cranking again this year I really want to upgrade to a motor.

    I see the motor conversion kits available from Maxant and others, but at ~$350 I am thinking it isn't worth it and being the DIY kind of guy I am would like to "rig" up something myself. Does anyone have a suggestion or solution for finding a cheaper motor/gear set I could rig up?

    I guess I should also say that I don't have a treadmill or the desire to take one apart. Maybe just any idea of what to search for to buy off the shelf parts for horizontal to vertical drive and motors...

    Thanks!
    Dan
    That old are you sure it isn't galvanized sheet metal and not stainless?

    I have known people to use a drill motor to power a handcranked extractor. Maybe that would work?
    Mark Berninghausen
    The answers are the end. The questions are the journey. Journey on.



  5. #5
    Join Date
    May 2010
    Location
    Cupertino, CA, USA
    Posts
    280

    Default Re: Adding motor to hand crank extractor

    You can pay $25 for an AC motor speed control or you can pay $5 for a dimmer switch at Home Depot. Here is what I use. Since the electronics clips the AC sine wave, it controls the voltage a little like pulse width modulation but as the load changes when the extractor comes up to speed, the speed of the motor tends to keep increasing so you still have to twiddle the knob.
    http://picasaweb.google.com/MichaelJ...40291990974210

  6. #6
    Join Date
    May 2002
    Location
    San Mateo, CA
    Posts
    5,057

    Default Re: Adding motor to hand crank extractor

    >That old are you sure it isn't galvanized sheet metal and not stainless?
    I second this. Brand new extractors in the '60s were galavanized. Still have mine.

  7. #7
    Join Date
    May 2011
    Location
    Algoma dr. Ontario, Canada
    Posts
    1,162

    Default Re: Adding motor to hand crank extractor

    The gear ratio in the hand crank is a step up about 3.5 to 1 which is the wrong way if you want to motorize it off the crank. You are looking for about 300RPM of the basket and most motors will run efficiently at a higher rpm so you will likely need some gear (or pulley) reduction. I have used one with a simple syncronous AC motor that used a belt and pulleys for basic reduction and had a slip clutch with tensioner to allow enough slippage to come up to speed slowly. That gets around any electronics for speed control. I dont know what brand it was but think its factory. That is about the simplest way to get speed control and motors at any garage sale.

  8. #8
    Join Date
    Aug 2005
    Location
    Fort Wayne, IN
    Posts
    996

    Default Re: Adding motor to hand crank extractor

    Quote Originally Posted by odfrank View Post
    >That old are you sure it isn't galvanized sheet metal and not stainless?
    I second this. Brand new extractors in the '60s were galavanized. Still have mine.
    I am guessing that he meant the beekeeper was about 75 years old, not the extractor...just worded poorly.

  9. #9
    Join Date
    Sep 2011
    Location
    Strafford, NH, USA
    Posts
    411

    Default Re: Adding motor to hand crank extractor

    Quote Originally Posted by odfrank View Post
    >That old are you sure it isn't galvanized sheet metal and not stainless?
    I second this. Brand new extractors in the '60s were galavanized. Still have mine.
    Yep, sorry. The beekeeper is 75. The extractor was his fathers. Not sure how old it is but definitely older and definitely stainless.

    Quote Originally Posted by Rader Sidetrack View Post
    Add in a speed controller like this and extract away ...
    http://www.cmlsupply.com/router-or-p...Fc2f4AodbVYAFQ
    That and an electric grinder might just get me there. The grinder would have the speed and the horizontal to vertical conversion. Does the speed controller work on any electric motor... I will have to look into this option.

  10. #10
    Join Date
    Nov 2011
    Location
    Rader, Greene County, Tennessee, USA
    Posts
    6,742

    Default Re: Adding motor to hand crank extractor

    > and an electric grinder might just get me there.

    While the angle drive may be attractive, the motor speed may not. Handheld drills seem to have an RPM of around 3500, but angle grinders are often double (or more) that RPM.

    A low speed, high torque arrangement will work best. That is what makes a motor (with the treadmill speed controller and an appropriate belt/pulley arrangement) from a recycled treadmill attractive.

    I recently bought the key components of a new but stripped 21 frame SS extractor from Brushy Mountain's NC Bargain Barn. My original plan was to build the whole extractor, but getting a drum, honey gate, reel and associated bearing system
    for $125 was hard to pass up. I am still planning to use the treadmill speed controller/motor that I salvaged earlier.
    Graham
    USDA Zone 7A Elevation 1400 ft

  11. #11
    Join Date
    Aug 2013
    Location
    High Hil, MO
    Posts
    6

    Default Re: Adding motor to hand crank extractor

    I'm in the process of building one from a kids battery powered scooter. The motor has plenty of power and speed. After I try it a few times then I might pick up a transformer and convert it to AC. Found the scooter on trash day so there is no cost and it just needed new batteries.

  12. #12
    Join Date
    Jul 2013
    Location
    Morris Plains, NJ USA
    Posts
    255

    Default Re: Adding motor to hand crank extractor

    To power my extractor I plan on using an AC variable speed "hammer" drill with the hammer function off. These are hefty drills in relatively small package and not terribly expensive. A typical workbench drill probably could not power an extractor whilst the hammer drills have lots of power.

    You also get the advantage of being able to easily drill into concrete; just make sure that you use the correct drill bit.

  13. #13
    Join Date
    Nov 2012
    Location
    Honey Hive Farms, Winfield Missouri
    Posts
    357

    Default Re: Adding motor to hand crank extractor

    Honey Hive Farms,

    I have seen people use drills, I never have..and probably never will. just an FYI

    Variable speed is great if you can get this on or with your motor.

    Tim Moore
    Honey Hive Farms "Saving the world one bee at a time"
    www.HoneyHiveFarms.com

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