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  • Timing pulley terminology

    From bob prohaska@21:1/5 to All on Sat Nov 11 22:28:34 2023
    Looking for a bit of instruction on timing pulley terminology.
    An otherwise-inidentifiable plastic pulley on a small air pump
    broke and it's somewhat difficult to search for replacements
    without knowing the correct lingo.

    The broken pulley has 18 rectangular teeth, the belt
    measures 10 mm pitch but 1/4" width. The shaft is just a
    hair over 9 mm, consistent with a 9 mm shaft that has been
    knurled with fine, straight splines.

    The toothcount, pitch, belt width and bore diameter seem to
    include all the important specifications. Can somebody
    hazard a guess at what to call the think I'm looking for?

    If it matters, the pump says it's made by the Perfect
    Circle Division of Dana Corp. IIRC it was sold as a
    compressor for air-over-water pressurised plumbing in RVs.

    Thanks for reading,

    bob prohaska

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  • From Snag@21:1/5 to bob prohaska on Sat Nov 11 17:01:44 2023
    On 11/11/2023 4:28 PM, bob prohaska wrote:
    Looking for a bit of instruction on timing pulley terminology.
    An otherwise-inidentifiable plastic pulley on a small air pump
    broke and it's somewhat difficult to search for replacements
    without knowing the correct lingo.

    The broken pulley has 18 rectangular teeth, the belt
    measures 10 mm pitch but 1/4" width. The shaft is just a
    hair over 9 mm, consistent with a 9 mm shaft that has been
    knurled with fine, straight splines.

    The toothcount, pitch, belt width and bore diameter seem to
    include all the important specifications. Can somebody
    hazard a guess at what to call the think I'm looking for?

    If it matters, the pump says it's made by the Perfect
    Circle Division of Dana Corp. IIRC it was sold as a
    compressor for air-over-water pressurised plumbing in RVs.

    Thanks for reading,

    bob prohaska



    Sounds to me like that covers it .
    --
    Snag
    Men don't protect women because they're weak .
    We protect them because they're important .

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From bob prohaska@21:1/5 to Snag on Sun Nov 12 00:12:28 2023
    Snag <Snag_one@msn.com> wrote:
    On 11/11/2023 4:28 PM, bob prohaska wrote:
    Looking for a bit of instruction on timing pulley terminology.
    An otherwise-inidentifiable plastic pulley on a small air pump
    broke and it's somewhat difficult to search for replacements
    without knowing the correct lingo.

    The broken pulley has 18 rectangular teeth, the belt
    measures 10 mm pitch but 1/4" width. The shaft is just a
    hair over 9 mm, consistent with a 9 mm shaft that has been
    knurled with fine, straight splines.

    The toothcount, pitch, belt width and bore diameter seem to
    include all the important specifications. Can somebody
    hazard a guess at what to call the think I'm looking for?

    If it matters, the pump says it's made by the Perfect
    Circle Division of Dana Corp. IIRC it was sold as a
    compressor for air-over-water pressurised plumbing in RVs.

    Thanks for reading,

    bob prohaska



    Sounds to me like that covers it .

    Yes, but how does one express it in standard parlance
    of the trade?

    Thanks for writing,

    bob prohaska

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Snag@21:1/5 to bob prohaska on Sat Nov 11 20:39:53 2023
    On 11/11/2023 6:12 PM, bob prohaska wrote:
    Snag <Snag_one@msn.com> wrote:
    On 11/11/2023 4:28 PM, bob prohaska wrote:
    Looking for a bit of instruction on timing pulley terminology.
    An otherwise-inidentifiable plastic pulley on a small air pump
    broke and it's somewhat difficult to search for replacements
    without knowing the correct lingo.

    The broken pulley has 18 rectangular teeth, the belt
    measures 10 mm pitch but 1/4" width. The shaft is just a
    hair over 9 mm, consistent with a 9 mm shaft that has been
    knurled with fine, straight splines.

    The toothcount, pitch, belt width and bore diameter seem to
    include all the important specifications. Can somebody
    hazard a guess at what to call the think I'm looking for?

    If it matters, the pump says it's made by the Perfect
    Circle Division of Dana Corp. IIRC it was sold as a
    compressor for air-over-water pressurised plumbing in RVs.

    Thanks for reading,

    bob prohaska



    Sounds to me like that covers it .

    Yes, but how does one express it in standard parlance
    of the trade?

    Thanks for writing,

    bob prohaska


    By stating tooth count , pitch , belt width , and bore diameter . You
    have provided every piece of information needed to match your pulley .
    --
    Snag
    Men don't protect women because they're weak .
    We protect them because they're important .

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Wilkins@21:1/5 to All on Sat Nov 11 22:35:25 2023
    "bob prohaska" wrote in message news:uiov6h$3lj2u$1@dont-email.me...

    Looking for a bit of instruction on timing pulley terminology.
    An otherwise-inidentifiable plastic pulley on a small air pump
    broke and it's somewhat difficult to search for replacements
    without knowing the correct lingo.

    -------------------------

    https://www.gates.com/content/dam/gates/home/knowledge-center/resource-library/brochure-sell-sheet/india/ptir-belt-id-chart.pdf

    --- SoupGate-Win32 v1.05
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  • From bob prohaska@21:1/5 to Jim Wilkins on Sun Nov 12 16:31:59 2023
    Jim Wilkins <muratlanne@gmail.com> wrote:
    "bob prohaska" wrote in message news:uiov6h$3lj2u$1@dont-email.me...

    Looking for a bit of instruction on timing pulley terminology.
    An otherwise-inidentifiable plastic pulley on a small air pump
    broke and it's somewhat difficult to search for replacements
    without knowing the correct lingo.

    -------------------------

    https://www.gates.com/content/dam/gates/home/knowledge-center/resource-library/brochure-sell-sheet/india/ptir-belt-id-chart.pdf


    I feel a bit like the naval architect who watched his ship sink off the ways and
    realized he'd forgotten to divide by two 8-)

    The belt pitch isn't 10 mm, it's five. Dunno how I screwed that up.

    Thanks for everyone's patience, things make better sense now.

    bob prohaska

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Wilkins@21:1/5 to All on Sun Nov 12 18:35:35 2023
    "bob prohaska" wrote in message news:uiqulv$5e04$1@dont-email.me...

    I feel a bit like the naval architect who watched his ship sink off the ways and
    realized he'd forgotten to divide by two 8-)

    ---------------------------
    Titanic's architect went down with her. He was a replacement, the original
    quit after management reduced the 64 lifeboats he had designed for to 16. However the ship went under before they could launch the last of the boats
    they did have.

    https://en.wikipedia.org/wiki/Vasa_(ship)

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