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Recent content by funnelguy

  1. funnelguy

    Dealing with unruly CAD tech

    Quote, “Everybody at this firm thinks hes great but i have real problems with him.” There’s your first clue. Quote, “For starters he is loud and obnoxious, he is always pulling these stupid jokes on me, and he questions everything i do.” Lighten up. Learn to work with other people. Especially...
  2. funnelguy

    How do I through harden AISI 4340?

    Face off the end of a grade 8 bolt and drill your .281 hole. You'll get plenty of parts before the threads wear out. Cheap and quick. You really cannot have 2 major section changes and sharp corners in the same plane for quenching. That needs to be changed.
  3. funnelguy

    cook vs. plumbers

    True story. My children and I are headed east on I-80 and we stop for gas at a rest stop in Indiana. We decide to get some food and are standing in line at H*****’s deciding what to get and I happen to glance at one of their employees doing some clean-up work. He takes the broom he was...
  4. funnelguy

    Explain venturi tunnel design (downforce) on race cars

    Check out this site, especially the recommended reading list. http://www.mulsannescorner.com/
  5. funnelguy

    Brake setup??

    This link is to a spreadsheet that thread participants might find useful... http://sports.racer.net/brake_bias.htm
  6. funnelguy

    How do I through harden AISI 4340?

    I think there's a problem in either design or heat treating of this tool. 15-20 ft-lbs of torque on a 9/16 thread should be a cakewalk for ANY tool steel, IMO. I think the transition from the threads to the square section is too abrupt (and probably full of sharp corners...). This coupled...
  7. funnelguy

    Pre-Loaded Clutch Release Bearings

    There are 2 benefits on racing vehicles... 1. Life is made easier for the diaphram fingers and bearing by not constantly accelerating from 0-10,000 RPM instantly every time the clutch is dipped (for those who use the clutch). 2. No loss of motion at the clutch caused by vibration knocking back...
  8. funnelguy

    Possible job offer

    A star for that, ezyjack. I was having similar thoughts about this. If you don't absolutely want to jump at the new offer, I would pass. Your gut is telling you something. I have allowed my brain to overrule my gut on 1 marriage and 2 jobs. All three were less than satisfactory... Also...
  9. funnelguy

    Resigning gracefully...

    Good deal, I'm glad things went well for you. Thanks for following up here.
  10. funnelguy

    4140 heat treating variation in rc

    I'm no expert, but I have used vacuum HT facilities over the years. I think your problem lies with the quench rate. Decarb is a non-issue in a vacuum furnace. Has your vendor succesfully processed similar cross sections in the same material before? A friend of mine had problems processing...
  11. funnelguy

    Standard for pitch diameter measurement

    1) Machinery's Handbook gives complete information on this subject. 2) It depends. Try talking to a few industrial supply houses.
  12. funnelguy

    Looking for some help and guidence.

    Jeremy, I am of two minds on this topic. First, I want to congratulate you on your drive and passion. Very few 26 year olds have the sort of commitment it takes to build a race car, let alone three of them. Perhaps your passion will carry you through the tough stuff ahead. You really should...
  13. funnelguy

    Keeping your own morale up...

    The Tick makes a good point. Along the same lines, not all engineering positions make the same demands of people. I've worked with what could only be called "analysis types" who never left the confines of their cubicle. I've worked with project engineers who did some design and a lot of...
  14. funnelguy

    measuring threads

    Be careful about relying on solely on thread mics or snap gages on the shop floor without using ring gages on external threads. A defect in the thread root (chipped or worn insert or wheel or wrong insert) will not show up unless functionality is assured by the use of the GO ring gage on...
  15. funnelguy

    What would you do?

    ajack1, I suspect the US is not far behind. That's got to be the ultimate irony when people are afraid to tell the truth (or it is outright unlawfull) because of lawyers. Now a postal supervisor can only say, "Oh, Mr. Widget was an exemplary employee. Certainly kept his AK-47 clean and oiled...
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