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  1. D

    Racing oil for historic engine

    What does your sponsor Castrol recommend?
  2. D

    Abaqus modelling

    If there is no steel reinforcement I might think about Principal stresses. Tensile strength is mighty low.
  3. D

    Risk of through hole on live piping

    pressure? industrial or residential? live steam or lemonade ?
  4. D

    Sqaur diffuser plenum sizing

    My recollection tis the ASHRAE handbooks have practical information about plenum sizing and much much more.
  5. D

    Torque Impact of Gear Train?

    With all them gears I'd expect lubrication churning etc might start to matter.
  6. D

    What is meaning of TS B7

    I've had a few experiences similar to MintJulep in Post 5. Most recently when looking for a chart of tap drills for varying % thread when tapping an 8-32 hole in a nasty material. AI was all hung up on thread engagement and could not be convinced otherwise. Attached is one man's opinion of AI
  7. D

    calculation for tightening torque

    If you are providing more than two diameters of thread engagement the aluminum thread "strength" may not be a problem. This is related to post 3 CWG1's second paragraph.
  8. D

    nut welding fixture

    Like this ??
  9. D

    Shaft can't fit in the hole.

    If the Ø10 mm shaft was centerless ground it could easily have a three lobed profile that checking with a micrometer can't detect. "However did anything ever get made before (E) was invented?" ASME's Y14.5 Rule 1 is the default. "Envelope Rule" or "perfect form at MMC It might have appeared as...
  10. D

    Sealing documentation over groove specification?

    I believe there are some surface finish requirements amongst the Groovy specifications. I'm thinking a dynamic seal really needs lubrication. Is the actuator pressurized by air or oil? What is the actuator maximum pressure ?
  11. D

    How to find the amount of precambering to be done before welding to avoid distortion?

    get Blodgett's book(s). Many tips here, including back-step welding. https://www.lincolnelectric.com/en/welding-and-cutting-resource-center/welding-how-tos/weld-distortion If the results aren't quite good enough, get out the oxy-acetylene torch...
  12. D

    rotatign mechanism suggestion

    rotate for fabrication? or it will it rotate in service ?
  13. D

    Balancing large 8600hp electric motor with fluid film bearings

    So the vibration sensors are mounted to the bearing housings ? Is there just one sensor on each bearing housing? Sounds like they are hard mounted and not readily re-positioned for vertical or horizontal. Are the vibration measurements filtered 1X rotational, or "unfiltered" ?
  14. D

    Parallel horizontal shims that slide frictionless on vertical rods

    Among the many other hitherto unidentified details things the holes in the shims are going to need some careful detailing lest their square edges become locking devices. https://m.media-amazon.com/images/I/71anrnKKStL._AC_SX522_.jpg...
  15. D

    Lincoln DC1000 machine

    Maybe has an NL Option kit ? whatever that is ? CONNECTION OF DC-1000 WITH NL OPTION KIT TO LAF-3 (Obsolete) from page 20 on the Operator's manual here - https://files-us-prod.cms.commerce.dynamics.com/cms/api/tflzsjpjnb/binary/MA2z4B
  16. D

    REAR MAIN SEAL LIPS

    " the seal was cut at an angle making a "thread" like feature that helps work the oil through the sealing lip and spitting it back into the bellhousing " What direction does the crankshaft rotate relative to the seal "thread" ? Is country of origin molded on the seal? Does that match what the...
  17. D

    Left vs right thread

    I think fuel gas fittings are often LH thread.
  18. D

    PTC Renewals

    This company moved to Inventor after decades with PTC. There were also issues with the updated Windchill file management that required huge server upgrade. Maintaining a handful of PTC licenses to support access to two oceans of legacy models and drawings. that now have been migrated to a giant...
  19. D

    Movable-shaft design for adjustable gear teeth engagement

    https://www.e46fanatics.com/threads/steering-backlash-adjustment.726710/
  20. D

    identifying and using AP242 STEP files

    We still sell some of our parts that have been in production for over 50 years. We have patterns for many of them, made back in the day when there were still foundries in Massachusetts and the sales volumes were much higher. We provide finished part drawings, not pattern drawings. When a...

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