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  1. Tmoose

    Guidelines for designing foundation anchoring to rock

    Section 5-5.2.2 Rock Anchors. https://www.wbdg.org/FFC/DOD/UFC/ufc_3_220_20_2025.pdf
  2. Tmoose

    Oil flange redesign

    "a redesign of a weld neck flange" Is there a stated goal of the redesign? Is this a specialized flange for use on a custom project? Is the patient a commercial weld neck flange? If so they are built to Standards that make them dead reliable for rated service, and toleranced for...
  3. Tmoose

    Seeking Guidance on Learning to Use ACOEM ONEPROD Vibration Analyzer

    looks pretty powerful, but to the point setting it up is too complicated for this old dog. https://fcc.report/FCC-ID/2AC3Z-CAC1005000/2552731.pdf HP/Agilent Application Note AN 243-1 provides a high level overview of rotating machinery diagnostics. Are you already beyond that point? I suggest...
  4. Tmoose

    Added mass to a Hydraulic cylinder

    I'm curious about the purpose of adding weight to end(s) of hydraulic cylinder. https://www.directindustry.com/prod/bell-srl/product-17502-1175045.html Maybe make it self retracting or self extending, if the shaft is vertical? That's all I've come up with so far.
  5. Tmoose

    tig welding tubing, fitting face perpendicular to tubing

    The sliding surfaces of clutch components ( also brake rotors and even brake drums) can suffer severe localized heating and frictional wear. https://www.v6z24.com/attachments/89-3400-z24-034-jpg.36543/ The late, great J. O. Almen wrote a wonderful article for Metal Progress in 1943 entitled...
  6. Tmoose

    Bolt Torque and Bolt preload query

    "Never torque, use elongation" I wonder what r6155 would do if confronted with a flat tire and needs to install the spare tire. https://tech.arp-bolts.com/instructions/134-6003.pdf angle torque is pretty common on rod, main and head bolts on modern cars.
  7. Tmoose

    Lower Ball Joint in Tension

    This tool made it easy to replace the the VERY rusty Accord's Ball joints.
  8. Tmoose

    GMAW shotcircuit - Lack of fusion

    What up-to-date qualifications, if any, do your welders have? https://www.nationalboard.org/index.aspx?pageID=164&ID=179 "Cold lap" is a constant major concern. "One bad characteristic, however, is that the quick freeze puddle has a tendency to "cold lap" when not carefully deposited with...
  9. Tmoose

    Experiments with "Constrained Layer Damping" of Small Bore Connections

    " 1/2"dia stainless steel tube x 40" span in a clamped-pinned configuration that fails in fatigue after 2 years operation. " Got pictures of the failure ? What is the tube being asked to do for 2 years ?
  10. Tmoose

    Carb. Jetting using an A/F gage

    The Mikuni carburetor tuning manual from the 1970s got right to the point. Selection of the main jet. First ,do the following on a flat road. (1) Select the largest main jet which affords the maximum revolutions per minute (the maximum speed).
  11. Tmoose

    Standards on filling holes with weld

    Use aluminum "pins" ? Then after the edges are welded, finish either with autogenous welding the ends of the pin(s) and holes or use pins slightly shorter than the assembly thickness to permit real "plug welds." Even with pins installed I think the halves of the welded assembly will likely...
  12. Tmoose

    420, 303, and 304 SS and stray current failures

    Is a potential parallel welding current path really thru the rose/washer/clip/shaft?
  13. Tmoose

    You Can’t Buy That Diesel Truck

    I wonder what a cutting edge world class 3500 hp electric tug would look like. The solar panels might have a vaguely familiar look. https://cdn.pixabay.com/photo/2024/04/29/00/07/pirates-8726523_1280.jpg
  14. Tmoose

    installation vs seating torque

    "GE spec's installation torque has no mention of preload/axial load at all, the protrusion is what defines the "installed" state for the max installation torque." I suggest proceeding carefully. I'd interpret protrusion as the number of screw/bolt threads visible beyond the nut. "Producing a...
  15. Tmoose

    Strut tower bar preload: tension or compression?

    By inspection I always wondered what arched tower braces, attached with offset thin plate brackets could really offer. In comparison, the 1960s Shelby Mustang braces to the firewall looked to me to provide a 10X stiffer load path...
  16. Tmoose

    Axle failure, thoughts

    How long was the shaft in service? I'm still unclear whether the fracture surface propagated from a groove machined in the shaft. Any micromotion of the shaft within the bearing at the edge near the shaft shoulder would cause fretting. The endurance strength of a fretted surface is mighty low...
  17. Tmoose

    Threaded hole with cutout on the outer surface of a rotor

    It has only been a couple of days, but OP ain't been back since Sept 23, the day of his original post. I do not understand the axis of rotation ( among other things). And as a result, also not the tendency for "the size of the groove" to "change during rotation." //Maybe// if the groove was...
  18. Tmoose

    Welding of high strength grade 8.8 steel bolts

    "Grade 8.8 bolts are heat treated by quenching and tempering in accordance with the DIN 933 grade 8.8 standard. This process involves: - Heating the steel to around 870°C, where it transforms into a γ-austenite crystalline structure - Rapidly cooling the steel, which transforms the austenite...
  19. Tmoose

    Permitted deflection of gear sets

    Like MFGENGGEAR said- Contact stress Contact wear Beam strength (deflection) ............... I think focussing on deflection with the goal of limiting it to "only be a few % of the height of the teeth" might be overlooking potentially serious problems elsewhere, especially if the rpm and tooth...
  20. Tmoose

    Low-throttle driveline oscillations

    My 2013 Mazda CX-5 FWD with manual transmission loves to buck at small throttle openings and low rpm in first gear. It also spins its tires easily at pretty modest 1st gear starting acceleration. That has been a little surprising with the front wheel biased weight distribution. I'm...

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