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  • Users: Philrock
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  1. Philrock

    Engineering calculator recommendations

    My HP11C calculator finally bit the dust, and I'm in the market for a replacement. I bought an HP35s, but I'm not very pleased with it. I'm looking for suggestions on what to buy. My 1st calculator was an HP35. I paid $400 for it in the early 1970s. It had all the horsepower I needed, and...
  2. Philrock

    Bore size for cutters for Sykes 5E

    My client needs to purchase herringbone shaper cutters for a Sykes 5E machine. We have all the specs we need except for the cutter bore size. My client and I are in California. The Sykes machine is at my client's vendor's shop overseas. Question: what is the correct bore size for cutters for...
  3. Philrock

    Engage large threads without cross threading

    I'm designing an axial adjuster for positioning the outer ring of a tapered roller bearing, to control end play. One method for doing this is to use shims under the retaining flange. My client and his customers have been doing this for decades and have found it very awkward, and have asked me...
  4. Philrock

    4-bolt flange block spherical roller bearing

    I have a heavy duty application for a 4-bolt flange block spherical roller bearing. The shaft rotates, so secure mounting to the shaft is important. Locking collars at both ends of the bore would be adequate. While looking for a bearing, I found the Moline Bearing M3000 Even-Lok series...
  5. Philrock

    Allowable stresses for plated springs

    Are there rules of thumb for additional safety factors or reduced allowable stresses for helical coil round wire compression springs with the following finishes? zinc electroplating zinc mechanical finish gold iridite passivation Thanks, Phil
  6. Philrock

    AutoCad 2000 / 2013 migration

    I'm currently using AutoCad 2000 / Win XP. I've written my own extensive screen menu, and I've written and download dozens of AutoLisp routines. The screen menu and AutoLisp routines are essential to my productivity. I'd like to upgrade to Win 7 (already have new machine) and AutoCad 2013...
  7. Philrock

    Help identify casing hanger threads

    I'm reverse engineering an 11" 3,000 lb. casing hanger, and would appreciate some help identifying the tapered threads at the ends of the fitting. The threads have a 5.545" diameter x .55" deep lead-in recess, and the threads are about 3.4" long. I have been told that they 8-Round threads. I...
  8. Philrock

    Metric drawing for inch gear?

    I am reverse engineering a double helical pinion. 6 transverse diametral pitch, 1.9375" diameter shaft extensions, .5625" wide keyways, - clearly a part designed in the inch system. My client has asked me to make the drawing metric, to facilitate having the part made overseas. At first I...
  9. Philrock

    Lost selecting and highlighting in SW 2006

    I'm running SW 2006 on Win XP Pro. A few days ago I downloaded a STEP file from a vendor's web site and opened it in SW. I ran import diagnostics in SW. SW said there were problems, but the part seemed to behave o.k., aside from the yellow triangle warning. Immediately after that, I lost...
  10. Philrock

    Non-tested video card causing problems?

    I'm running SolidWorks 2006 / Win XP Pro. I previously had an nvidia Quadro FX 1300 video card which worked fine until it died and completely disabled the whole computer. I replaced it with a less expensive nvidia GeForce card - not on the SW tested list. The card seems to mostly work o.k...
  11. Philrock

    Wire rope / block efficiency

    I want to calculate the efficiency of a wire rope / block system. There will be 4 or 5 sheaves on both upper and lower blocks, therefore 8 or 10 rope parts. There will also be several routing sheaves between the last block sheave and the winch. Because of the large number of sheaves, friction...
  12. Philrock

    Brake caliper piston seal design

    Some time ago, there was a discussion of Brake Caliper sealing in thread108-98668 . This thread is now closed, but I would like to re-visit the topic. There was mention of o-rings that are trapezoidal in cross section. When pressure is applied, the o-ring distorts, and when pressure is...
  13. Philrock

    Compatibility of AL alloys for spot welding

    I'm designing a sheet metal weldment that requires the use of an aircraft continuous hinge (MS20001) made of AL 2024 or 7075. The spec for the hinge says it can be either alloy, and the vendor can not tell me which alloy it will actually be. I want to spot weld the hinge to a sheet of 6061-T6...
  14. Philrock

    Need laptop recommendations

    My Fujitsu C2310 laptop has died, and I'm in the market for a new laptop, and looking for recommendations. The Fujitsu was under-powered for what I'm doing, which includes SolidWorks 2001 Plus, AutoCad, Excel, MS Word, web browser, and email client - sometimes all at the same time. I'm...
  15. Philrock

    Natural frequency of structural system and elements

    I am working on a foundation system, with a structure to be rigidly anchored to the foundation system. The issue of concern at the moment is the relationships of the natural frequencies of the elements and the natural frequency of the combined foundation system and structure. The natural...
  16. Philrock

    Convert AutoLisp math to standard systax

    I need to convert several hundred lines of AutoLisp math formulas to standard math syntax to use in another programming language. Is there a conversion program that does this?
  17. Philrock

    ISO 6336 gear rating standards

    I'm writing a spreadsheet to calculate gear ratings per ISO 6336. I did the same thing for the AGMA standards a few years ago. Big Job. In each AGMA standard, there's a list of symbols near the beginning of the document, listing mathematical symbols and the first equation and clause in the...
  18. Philrock

    Empty error message box

    I'm working on a small (29 parts, 67 top level mates) assembly in SolidWorks 2006. At the top of the assembly tree, next to the assembly icon, is the error icon with the red circle and the white arrow pointing down. The same icon appears next to one of the parts about halfway down the tree...
  19. Philrock

    Recommendations for video card

    I'm using an Nvidia Quadro FX 1300 with SW2006, Win XP, 128 MB vram, 2 GB system ram. About half the time when I enter a sketch, the dimensions are not visible. Usually, if I exit the sketch and do a rotate and pan, then re-enter the sketch, the dimensions are there. I've updated the Nvidia...
  20. Philrock

    Source for hardened AN960 washers

    Where can I find hardened AN960 (aka NAS1149) washers? Zinc or cad plated, or stainless. 1/4" and 5/16" nominal, Rc 35 - 45. I've tried the following without success: McMaster-Carr Bolt Depot Barnhill Bolt Aircraft Spruce & Speciality Many others from Google searches NAS1149E is a nice hard...

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