Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 5 of 5
  1. 8th June 2013, 02:04 PM #1
    steamingbill
    steamingbill is offline SENIOR MEMBER
    Join Date
    Nov 2010
    Location
    Gippsland Victoria
    Posts
    706

    Default Interesting : Cone Pulleys & Split Variable Speed Pulleys

    Hey,

    These are interesting things.

    Split Pulley Variable Speed Drive - See attached JPEG - Google search shows that they seem to be commonly used in industry

    Cone Pulleys : KMODDL - Kinematic Models for Design Digital Library

    Might be worth considering instead of step pulleys next time you build something that needs variable speeds.

    Were split pulleys used on lathes before electronic speed variation was readily available ?

    Anybody ever used either of these things ?

    Now to declare my vested interest : Have robbed the pulleys off my drum sander to trial my shopnotes lathe and am still looking for best possible way to have variable speed drive lathe so I can give pulleys back to drum sander. AT the moment they give me a perfect 1000rpm and 2000rpm when swapped. Good enough for learning basic spindles and initial faceplate exercises.

    Bill
    Attached Images Attached Images
    Last edited by steamingbill; 8th June 2013 at 02:07 PM. Reason: Correction to last sentence
    Reply With Quote Reply With Quote
  2. 8th June 2013 02:04 PM # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. 8th June 2013, 02:25 PM #2
    swk's Avatar
    swk
    swk is offline Dilettante woodworker
    Join Date
    Jan 2009
    Location
    Adelaide
    Posts
    289

    Default

    Hi Steamingbill.

    The split pulley arrangement I known was used in a place where I once worked, there are probably similar near you. It was used in coal feeders, where the output drive turned a drum containing pockets (so measured quantities of coal could be metered out). The split pulley (and hence drum speed and coal feed rate) was moved by a pneumatic control system which automatically controlled boiler firing rate.

    I always assumed that the split pulley arrangement was a fairly common, pre electronics, continuously variable speed control mechanism where DC motors were not wanted.


    Regards
    SWK

    PS, I just recalled, I reckon my lathe, MC900 type, has got a split pulley speed control anyway (duh!)
    Reply With Quote Reply With Quote
  4. 8th June 2013, 04:02 PM #3
    joe greiner's Avatar
    joe greiner
    joe greiner is offline Sum ergo cogito (Cogito)
    Join Date
    Oct 2006
    Location
    Tallahassee FL USA
    Age
    82
    Posts
    4,650

    Default

    Correct about MC900 and similar. Google [reeves drive] for variations.

    Cheers,
    Joe
    Of course truth is stranger than fiction.
    Fiction has to make sense. - Mark Twain
    Reply With Quote Reply With Quote
  5. 8th June 2013, 04:04 PM #4
    maggs's Avatar
    maggs
    maggs is offline Member
    Join Date
    Dec 2011
    Location
    Maryborough, QLD
    Posts
    81

    Default

    These split pulleys are also used on Shopsmith combination lathes for speed control.

    Steve
    Reply With Quote Reply With Quote
  6. 8th June 2013, 04:15 PM #5
    Big Shed's Avatar
    Big Shed
    Big Shed is offline Retired Member
    Join Date
    Nov 2006
    Location
    Bendigo Victoria
    Age
    80
    Posts
    16,560

    Default

    Also known as a Reeves Pulley
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. HELP!!!!!! with pulleys.
    By fozz in forum WOODTURNING - GENERAL
    Replies: 22
    Last Post: 14th January 2013, 12:31 AM
  2. Pulleys
    By Pauls321 in forum WOODWORK - GENERAL
    Replies: 42
    Last Post: 13th January 2013, 10:48 PM
  3. MC1100 speed selector has dis-connected from pulleys. How to fix ?
    By dabbler in forum WOODTURNING - GENERAL
    Replies: 3
    Last Post: 15th September 2012, 04:40 PM
  4. pulleys
    By welder in forum THE HERCUS AREA
    Replies: 6
    Last Post: 2nd November 2010, 11:03 AM
  5. Pulleys
    By jmk89 in forum HOMEMADE TOOLS AND JIGS ETC.
    Replies: 8
    Last Post: 8th March 2008, 11:08 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules