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  • Users: uptick
  • Content: Threads
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  1. uptick

    Datum Callout

    A throttle shaft with two tap holes for mounting the throttle plate. Let put the shaft horizontally (left to right), draftman draws a vertical line between & midpoint of these two tap holes and calls it a datum A. He then make a basic dimension from this datum A (this vertical line) to one tap...
  2. uptick

    True position callout

    Hi there, I need your opinion on the case below: Problem: A buterfly valve with a shaft goes thru both side of the wall. Each side has a bearing bore callout. 1. The hole for the shaft is a thru hole with diameter A +/- tol with a datum A callout. 2. The bearing bore on the right states 2 X...
  3. uptick

    TP callout for two bearing counter bores

    Hi there, I need your opinion on the case below: Problem: A buterfly valve with a shaft goes thru both side of the wall. Each side has a bearing bore callout. 1. The hole for the shaft is a thru hole with diameter A +/- tol with a datum A callout. 2. The bearing bore on the right states 2 X...
  4. uptick

    Tamper-proof Screw

    Hi, I am loking for an ASTM spec (or other standard spec) that has detail dimensions for a tamper proof (or tamper resistant) screw. I am interesting in the slotted screw type. Please advise. Thanks
  5. uptick

    Thrust washer

    Hi, I was wondering if I can use a regular washer (good material) in place of a thrust washer for shaft end play. Can anyone explain why & whynot? Thanks,
  6. uptick

    Thrust Washer

    Can we use a regular washer (good material) as a thrust washer for end play (axial movement of the shaft)? Thanks, uptick.
  7. uptick

    Throttle body Valve (butterfly type) sizing

    Hello, I am new here. I have a customer asking how to size a correct throttle body for their engine? This TB will control the fuel (NG) line, not on the mixer line. What information do I need from them and how do I calculate the size of the TB? Is there any relationship between the Cv data and...

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