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Type: Posts; User: BillCobb

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    Climbing the Mountain

    While I enjoy these dissertations from future Employed Engineer hopefuls, let me add a simple comment as a wake-up call to those still looking for an education:

    There is NO WAY a manufacturing...
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    Winning Strategies.

    Allow me to add, based on my experience, that choosing a smooth driver/operator can be an important factor in vehicle durability. Someone who is hard on the steering, throttle, brakes, tires and...
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    The shaft

    Whatever you do, make the left and right side drive shafts different torsional stiffness, especially if your LSD is tight.
  4. Validation, Verification, Vindication

    I don't want to hijack Danny's thread, but a professional discussion on validation of FSAE car subsystem designs is long overdue. I'd suggest a new thread to handle the traffic on this subject, but...
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    Bamo Slamo

    LED Code bright red = bad encoder signal error.
    flashing red = too small or missing voltage warning.

    http://www.unitek-online.de/pdf/download/Antriebe-Drive/BAMOCAR/E-BAMOCAR-D3.pdf
  6. Thread: Camber curve

    by BillCobb
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    Curvatious Camber

    I'm posting a sample of typical results for a suspension 'camber curve' synthesis process on the TTC Forum. It's there because it contains material produced from a specific tire and conditions...
  7. Thread: Camber curve

    by BillCobb
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    I have an incli-Nation.

    Well, to keep this thread from burning out, let me suggest an alt.tactic far removed from the book of conventional suspension design religion:

    Synthesize front and rear dynamic camber curves that...
  8. Smokin O.P.s

    That car was in trouble long before it flamed out. It should have been black flagged just because of the environmental pollution it was spewing. Maybe somebody official should have inspected fuel...
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    For Example

    A indoor lab test whose importance is so very often overlooked, is a test for overall steering ratio. Simple stuff. Measure steering wheel angle, measure one or both road wheel angles, calculate a...
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    In Godd we trust, all others will need to brings some data.

    Thanks to all for your interest. Let's see some results. Don't have to wait for better weather, do some indoor tests of steering compliance and overall steer ratio. The compliance results will...
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    Sticky: Free Tires

    GoFund yourself !
  12. The Heat is on

    Looks like the only way they were going to get any heat in those tires.
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    Make Do-It-Yourself Sideslip Sensor.

    Then you can design a car's tire, chassis and steering performance, validate your design with direct measurements and turn your Wrench hat in for a Engineer's cap.
    ...
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    GUI GUIDE-ance

    That's why I write my own wrappers around analysis programs that can be run under Matlab control. Very easy with the GUIDE Tool. I then get control and processing done my way.
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    Hosed Again

    Steer by hose (aka hydraulic pump/motor combo) is not unreasonable. My boat seems to like it. It should be popular in the UK because of the potential for designed-in leakage.
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    Ah yes, the classic Mercedes oversized steering...

    Ah yes, the classic Mercedes oversized steering wheel....

    You would not need all these rules if you dropped the top 5 or 10 cars nose down from a crane. I have the portable crane. It will go up...
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    Roll Play

    Post a drawing of your suspension in a few views, list a table of the X,Y, and z coordinates of all the attachment points and the knuckle/(upright) and tierods, etc and we'll have a shootout, so to...
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    Manuel's Calculation

    Explain what you mean by "manual calculations". Do you mean kinematic analysis of a 4 bar linkage using trigonometry, or the measurement of a mock-up apparatus or of an actual car ? Did you actually...
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    The Strain Stays Mainly on the Frame

    Are you gauging the A-arms or the frame pockets? Pocket loads let you study different A-arm configurations more easily. You can then take the pocket loads and apply them in a laboratory setting to...
  20. Coarse Safety

    So who approved the use of plastic barrier blocks? Those should be 1 or 2 ton reinforced concrete slabs with anchor pins. I would not blame the driver(s) or the fans or the series. This is a venue...
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    Hamlet: Act 1, Scene 4

    As my old friend Marcellus once said to Horatio: "Somethings rotten in the state of Denmark". We need a second opinion on this 10 vs. 13 grip comparison, eh ?

    Maybe take this to the TTC forum and...
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    JB Weld

    Pick a smaller lighter stronger driver. Maybe someone without massive test tickles, eh ?
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    I want to know how to land on the Moon using Nastran

    valid = license

    If (valid == 'unknown')

    then Excel

    else help csvread

    end
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    mass backwards.

    I would like an explanation of what the comment about incorrect use of the "mass centroid axis" is all about, the before and the after.

    Never mind, I found it.

    His theory, was that TWO CG...
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    That's a NO from me, too. Simply because your...

    That's a NO from me, too. Simply because your car is not made up of point masses. Some of the non-point masses have their own inertia values. That makes your proposal 'pointless' so to speak. If...
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