In search of sheaves
Close
Login to Your Account
Likes Likes:  0
Results 1 to 10 of 10
  1. #1
    Join Date
    Mar 2016
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    35
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    15

    Default In search of sheaves

    Hopefully ok to post in here, figure better chances than in the generic commerce area.

    Looking for a set of main drive sheaves for my 1943 10EE (s/n 18075). With Cal's help, I figured out that the machine was originally flat belt but the sheaves were modified at some point to fit a single v-belt. Unfortunately, I'm finding the conversion was a hack job and nothing runs true.

    I'd love to get a set of dual v-belt sheaves if they could be easily adapted to the machine. I expect the spindle sheave will slide right on. Not sure if there's a 2 belt sheave that would drop right onto my backgear output? I know there were variations in the backgear assembly over the years. But also interested in if anyone has set of the original flat belt sheaves. Anything is probably better than what I currently have.

    Greg

  2. #2
    Join Date
    Sep 2002
    Location
    Salinas, CA USA
    Posts
    4,800
    Post Thanks / Like
    Likes (Given)
    527
    Likes (Received)
    430

    Default

    What RPM, 2500 or 4000? What is the diameter of the back gear spindle?

  3. #3
    Join Date
    Mar 2016
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    35
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    15

    Default

    Quote Originally Posted by rimcanyon View Post
    What RPM, 2500 or 4000? What is the diameter of the back gear spindle?
    It's a 2500 RPM machine. I think diameter of the back gear output shaft is 45mm (I haven't pulled the hub off to get at shaft yet). Not sure what diameter original sheaves were.

  4. #4
    Join Date
    Mar 2016
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    35
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    15

    Default

    Here's what's currently on the machine. Cal helped me figure out that the hubs are the original flat belt sheaves, cut down to mount the v-belt sheaves. Unfortunately, they don't run anywhere close to true. Don't know how anyone ever used this thing, maybe they never did. I could probably get them on another lathe and clean them up to run true, but I'd rather do it right.


  5. #5
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Virginia
    Posts
    20,184
    Post Thanks / Like
    Likes (Given)
    7561
    Likes (Received)
    12002

    Default

    I have a set of ex early round-dial flat belt sheaves. And a belt that came off them that is in very good condition.

    Flat belt drive need vary GOOD alignment, so you can expect to have to first replace perished rubber mounts under the large motor mounting plate (3 point?), then also shim the motor's four "feet".

    Not rocket science, any of that, but a tad tedious.

    "Factory" dual "A" section Vee would be "generally regarded" as better. They, too WANT good aligment but are far more forgiving of imperfections, as-in might wear sidegodlin, but NOT slip OFF under load as an imperfectly aligned flat belt can do.

    Send an email, not a "PM", to me for details if interested.

    Bill

  6. #6
    Join Date
    Mar 2021
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    27
    Post Thanks / Like
    Likes (Given)
    50
    Likes (Received)
    8

    Default

    Shouldn’t be an issue to get “right” sheaves. If you can, stay away from that style you currently have. With those being 2 piece sheaves, it’s easier to introduce runout/vibration.

    Keep in mind on the sheaves you need to stay away from the minimum diameter for the belt style. That also can introduce heat & vibration. A & AX will have a different minimum than B or BX. You can get variable pitch & dial in your diameters. Obviously the variable pitch will be more expensive than a run of the mill sheaves.

  7. #7
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Virginia
    Posts
    20,184
    Post Thanks / Like
    Likes (Given)
    7561
    Likes (Received)
    12002

    Default

    Quote Originally Posted by TBJK View Post
    Shouldn’t be an issue to get “right” sheaves. If you can, stay away from that style you currently have. With those being 2 piece sheaves, it’s easier to introduce runout/vibration.

    Keep in mind on the sheaves you need to stay away from the minimum diameter for the belt style. That also can introduce heat & vibration. A & AX will have a different minimum than B or BX. You can get variable pitch & dial in your diameters. Obviously the variable pitch will be more expensive than a run of the mill sheaves.
    The only "legacy" vee belt suitable is the "A" section.
    Period.

  8. #8
    Join Date
    Sep 2002
    Location
    Salinas, CA USA
    Posts
    4,800
    Post Thanks / Like
    Likes (Given)
    527
    Likes (Received)
    430

    Default

    I have a pair of Monarch 2-sheave pulleys that fit your 2-speed gearbox and spindle. They did not come on the same machine, so I cannot predict your max RPM without knowing the max RPM of your DC motor & Drive. However, I suspect it would be close to 4000 RPM, so you might need a new tach. Monarch made a lot of different sized pulleys to account for different motor RPMs, drive types and nameplate RPM of the machine.

    Gearbox pulley is 7 ⅛" dia., has a smooth 1.75" bore 1.25" long, recessed ½" on the back side and it has a .212" slot.

    Spindle pulley is 5 ½" dia., has a 1.875" bore 3 5/16" long and a .25" slot.

    BTW, almost every dimension on a 10EE is an exact fraction of an inch. There are a few metric shafts sized to fit bearings, but not many.

    img_1290.jpgimg_1291.jpgimg_1292.jpg

    Email me if you are interested. Price is $100 plus. shipping.

  9. #9
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Virginia
    Posts
    20,184
    Post Thanks / Like
    Likes (Given)
    7561
    Likes (Received)
    12002

    Default

    Quote Originally Posted by rimcanyon View Post
    I have a pair of Monarch 2-sheave pulleys that fit your 2-speed gearbox and spindle. They did not come on the same machine, so I cannot predict your max RPM without knowing the max RPM of your DC motor & Drive. However, I suspect it would be close to 4000 RPM, so you might need a new tach. Monarch made a lot of different sized pulleys to account for different motor RPMs, drive types and nameplate RPM of the machine.

    Gearbox pulley is 7 ⅛" dia., has a smooth 1.75" bore 1.25" long, recessed ½" on the back side and it has a .212" slot.

    Spindle pulley is 5 ½" dia., has a 1.875" bore 3 5/16" long and a .25" slot.

    BTW, almost every dimension on a 10EE is an exact fraction of an inch. There are a few metric shafts sized to fit bearings, but not many.

    img_1290.jpgimg_1291.jpgimg_1292.jpg

    Email me if you are interested. Price is $100 plus. shipping.
    Dave, that "seems right" for a 4K RPM. My two 2500 RPM ones both use a 7 1/2" at the motor/gearbox and "about" a 7" at the spindle.

    The pair of flat-belt sheaves I am able to send him (with a belt) are similar in just over a 1:1 ratio, also from a 2500 RPM early Round-Dial (1941?).

    The 3 HP "large frame" Reliance having a full-load 2400 RPM nameplate, that suits 2500 RPM at nameplate 3 HP load.

    "More sizes" would have had to enter with the 3 HP "small frame" and the 5 HP "Special Machine Tool Duty" motors which all had (MUCH) higher "base" and Field-Weakened RPM.

    I am already on-record that the twin "A" section is better as more forgiving of not only permanent minor mis-alignment, but less likely to be thrown-off if the motor or mounting plate flexes on its resilient mounts under shock loading.

    Email among us can sort this.

    One more 10EE saddles-up and .... rides again!


  10. #10
    Join Date
    Mar 2016
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    35
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    15

    Default

    Quote Originally Posted by rimcanyon View Post
    Email me if you are interested. Price is $100 plus. shipping.
    email sent. Thanks!


Tags for this Thread

Bookmarks

Posting Permissions

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