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  • Users: DKirkham
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  1. DKirkham

    Slight differences in Young's Modulus in Steel?

    Barbell manufacturers claim that "whippiness" of their steel bars can be changed by varying tensile and alloy content. By "whippiness" they are referring to flexing. I didn't think Young's Modulus of elasticity changed with alloy content, tensile strength, or heat treat of the steel. (I am...
  2. DKirkham

    How does the Delta Wye Switch Work? Help!

    Dear Gods of Electrical Motor Theory, I am just a lowly automotive/manufacturing guy most humbly petitioning you, the Gods of Electrical Motor Theory, to grace me with your knowledge on how the delta wye switch works. Yes, I have searched Google. I have searched this site (you guys...
  3. DKirkham

    How to Control AC 600V PM motor???

    Hello everyone, One of our customers has asked us to put an electric motor in one of our cars for him. You can see the cars we make here at out website: www.kirkhammotorsports.com so you can get an idea of what we are trying to do. I have searched high and low and I have settled on using...
  4. DKirkham

    What Stainless Alloy to SPF Titanium at 1650 F

    I am looking for a stainless casting alloy to be used to make the forming die for a super plastic formed part in titanium. The die blank will be cast to rough size and then final machined. In my research with the titanium SPF guys I have found that 309 is used to prototype parts but they use a...

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