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  1. Thread: Design Judging

    by Forbes
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    42
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    47,903

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    Yes, Z can be strident and abrasive; he is also manifestly brilliant and exceedingly well informed. And, yes, Claude can be petulant and self-promotional; he also has extensive experience in various...
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    "Optimum" clearance is 57.367mm, from chassis to...

    "Optimum" clearance is 57.367mm, from chassis to ground.

    Jonny: Where did that number come from?

    Forbes
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    And then there is the really obvious: Is there...

    And then there is the really obvious: Is there enough oil in the tank to start with?

    Forbes
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    This might help:...

    This might help: https://msis.jsc.nasa.gov/sections/section03.htm#_3.2_GENERAL_ANTHROPOMETRICS

    Forbes
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    Claude: You said "A soft spring on a stiff...

    Claude:

    You said "A soft spring on a stiff spring is still a stiff spring". I think you meant it the other way around.

    Forbes
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    Luniz, Claude, all: Compare Luniz' upright...

    Luniz, Claude, all: Compare Luniz' upright casting to trabecular bone (see http://study.com/academy/lesson/trabeculae-of-bone-definition-function.html). Deep down, Claude's "aesthetic" and "sexy"...
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    Matt, See Costin & Phipps, first full para on...

    Matt,

    See Costin & Phipps, first full para on p.97 (in 1st ed'n.):

    "The loads involved [in a rear upright] are bending in both vertical planes, and torsion from toe-in and toe-out. The best...
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    Mohammad, See here:...

    Mohammad,

    See here: http://www.engineeringtoolbox.com/boiling-point-water-d_926.html
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    MCoach, Thanks for the update/correction; I...

    MCoach,

    Thanks for the update/correction; I shall amend my records.

    Forbes
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    Test Driver: E85 is simply a mixture of...

    Test Driver:

    E85 is simply a mixture of gasoline and ethanol (ethyl alcohol). According to ASTM D 5798-09b, the proportion of ethanol in the mix can be from 75% to 85%. Many sources point out...
  11. Leif, Check the stock from which the top hats...

    Leif,

    Check the stock from which the top hats were made. If it is non-magnetic, then it is certainly neither mild steel nor 4130/4140 - most probably one of the "300 series" stainless steels
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    Not sure that's correct, Jonny. I believe the...

    Not sure that's correct, Jonny. I believe the pump depends on the surrounding fuel for cooling. (For sure it will cook itself if run dry.) So, might better say: ...any orientation as long as it...
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    Have you considered talking to each other?

    Have you considered talking to each other?
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    Z says: "the amount of floppiness of the right...

    Z says: "the amount of floppiness of the right rear-wheel suggest that maybe the "optimised" wheel-bearings were too optimal?"

    Maybe a 'rubber' upright? NC machined uprights invariably have open...
  15. Thread: Vale Doug Gore

    by Forbes
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    7,152

    Oh dear - we have lost another Good Guy. Doug...

    Oh dear - we have lost another Good Guy. Doug was my editor when I began contributing to the sister magazines ‘Open Wheel’ and ‘Stock Car Racing’. Seeking illustrations for my first book, I...
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    mdavis, Christian I believe this is the link...

    mdavis, Christian

    I believe this is the link to the NASA document: http://msis.jsc.nasa.gov/sections/section03.htm#_3.2_GENERAL_ANTHROPOMETRICS

    Forbes
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    Sticky: View Post

    Here’s a few suggestions for additions to the list:

    Dzik (ed). Aircraft Detail Design Manual (3rd ed'n). Aviation Publications, Appleton, WI., 1977.
    Intersecting lines on paper are one thing;...
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    A water jet cutter will leave a clean edge on...

    A water jet cutter will leave a clean edge on both cured laminates of both carbon fibre and Kevlar (no "fuzz"!). Many aerospace composites manufacturers have one. Beware any reciprocating power...
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