Help Support Aussie Homebrewer by donating:

  1. We have implemented the ability to gift someone a Supporting Membership now! When you access the Upgrade page there is now a 'Gift' button. Once you click that you can enter a username to gift an account Upgrade to. Great way to help support this forum plus give some kudos to anyone who has helped you.
    Dismiss Notice

Grain mill design

Discussion in 'Gear and Equipment' started by Ducatiboy stu, 1/7/14.

 

  1. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 1/7/14
    Here is the anatomy of my mill

    The rollers are 50mm x 200mm solid knurled stainless

    The frame is made from hardwood

    Bearings are 40mm/17mm x 12mm

    The 2nd roller is free wheeling

    The gap adjusters are stainless bolts qith a threaded plate and locking nut


    The bearing holes where cut out with a hole saw and the adjuster slot done with a router and drill


    2014-07-01 13.07.12.jpg
    2014-07-01 13.12.13.jpg
    2014-07-01 13.13.18.jpg
    2014-07-01 13.17.50.jpg
    2014-07-01 13.18.49.jpg
     
    1 person likes this.
  2. Gavo

    Dogwood Brews

    Joined:
    13/7/08
    Messages:
    1,387
    Likes Received:
    17
    Gender:
    Male
    Location:
    Toowoomba West
    Posted 1/7/14
    About the same as I did except my end plates are made from angle iron. Same bearing mount and adjusting type system. Works great.
     
  3. Online Brewing Supplies

    **** OBS ****

    Joined:
    17/5/06
    Messages:
    4,740
    Likes Received:
    639
    Gender:
    Male
    Location:
    The Dean WA
    Home Page:
    Posted 1/7/14
    You both have too much spare time !
     
  4. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 1/7/14
    I didnt make mine. Its known as the "Tony Mill"

    Only a few where made, so no, you cant order one.
     
  5. Maheel

    Well-Known Member

    Joined:
    19/1/10
    Messages:
    1,916
    Likes Received:
    178
    Posted 1/7/14
    how does the "gap" adjust ?

    is the adjustable side bearing hole a little oval or something allowing it to be forced out under use?
     
  6. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 1/7/14
    Yes the hole is slightly oval.

    The adjusting bolt pushes directly against the bearing outer shell.

    The gap is currently 0.9mm, which I have found perfect for the roller size and speed.

    The only disadvantage with a lazy roller is you need to push a few grains between the rollers to get the second one rolling before you load the hopper. Once its rolling its fine.

    I did try a few methods like O-rings etc to drive the 2nd roller but they only ended in swear words.

    Gear drive is a lot more complex, and if you can put up with sticking a few grains between the rollers at the start, then the extra cost isnt worth the extea machining and f&%#g about.
     
  7. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 1/7/14
    Few more pics.

    Bearings are std 6203-2RSM. Available at any bearing shop
    2014-07-01 18.18.39.jpg

    Normal coach bolts hold it together

    2014-07-01 18.20.03.jpg
     
  8. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 1/7/14
    Adjuster

    2014-07-01 18.01.30.jpg
     
  9. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 1/7/14
    Jeezus.....all the pencil marks Tony set out are still visible

    After all those years the mill is still on spec.
     
  10. shaunous

    I Drink VB

    Joined:
    1/8/12
    Messages:
    2,528
    Likes Received:
    488
    Gender:
    Male
    Posted 1/7/14
    Well crafted bit if gear that.
     
  11. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 1/7/14
    It done 250 brews....
     
  12. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 30/7/14
    Mill stand is now built. Just need to buy a door hinge to mount the motor on the back

    2014-07-30 16.44.47.jpg
    2014-07-30 16.45.31.jpg
    2014-07-30 16.45.47.jpg
     
  13. Ducatiboy stu

    Well-Known Member

    Joined:
    2/4/05
    Messages:
    14,269
    Likes Received:
    3,829
    Gender:
    Male
    Posted 30/7/14
    Motor

    2014-07-30 17.11.23.jpg
    2014-07-30 17.11.51.jpg
     

Share This Page