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Type: Posts; User: Pete Marsh

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  1. Can someone please explain exactly what the...

    Can someone please explain exactly what the simulator does that makes the car win a race?

    Does it take in the logged data and determine the car needs more front aero download to be faster? Or did...
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    I did not mean to suggest or recommend extra...

    I did not mean to suggest or recommend extra freedom in the steering system or any other. I only offer it as an example, or attempt, to have short simple rule that covers the safety aspects but...
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    I would like to reiterate Z's point on the...

    I would like to reiterate Z's point on the inclusion of the word "rack" in the steering rules, implicitly requiring you must have such a thing in your design in order to have a place to put the...
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    Hi Mitchell, There are sufficient material...

    Hi Mitchell,
    There are sufficient material resources to produce a reasonably good car, and 5 or 6 good guys that could do that if that is what they spent their time on. IMO it is not a build...
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    UWA is going to the comp, but is in struggle...

    UWA is going to the comp, but is in struggle town.

    It would be great if anyone at the comp that is finding success within a Uni that is not really interested could stop by and have a chat.

    Pete
  6. Your not allowed to use the engine as a...

    Your not allowed to use the engine as a structural member without physical testing. There is a rule for that somewhere, or maybe just on the old rule clarification pages on the SAE forum. (ie, not...
  7. I think they have an issue with the plan view...

    I think they have an issue with the plan view shape of the structure. If you imagine the entire hoop brace support load path it has a large bend in it in plan view, and would not perform as an...
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    I agree fire is the biggest risk, but it should...

    I agree fire is the biggest risk, but it should be noted, that in Australia at least, a worn out ancient, ill fitting motorcycle helmet would never pass tech inspection with the current rule set....
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    Will that be with mechanical interconnection...

    Will that be with mechanical interconnection again Mitchell?

    Anyone other than UWA using a beam at the front as well?

    Pete
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    UWA used an optical wheel speed pickup based...

    UWA used an optical wheel speed pickup based around a PC mouse sensor for many years. The trigger wheel is inside the upright, between the wheel bearings, so well protected from the environment.
    ...
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    MCoach The new uprights use roller bearings in...

    MCoach

    The new uprights use roller bearings in the STEER axis, as well as the wheel axis of course. It is the huge reduction in steering system friction I think contributed to the shimmy in our...
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    At UWA we have seen some of this with our new...

    At UWA we have seen some of this with our new beam axles as well. We have put it down to two issues.

    I agree with Z as to the driver. We see it only at wheel lock, and usually get out of phase...
  13. GTS, and others. Briefly. No one at UWA is...

    GTS, and others.

    Briefly.

    No one at UWA is aware of any late reports. Which one was it? One year there was a server problem with electronic submissions, but hard copies still had the correct...
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    Check the master cylinder has free play when the...

    Check the master cylinder has free play when the brake pedal is at rest.

    The master MUST be allowed to fully return, to allow the reservoir port to open and allow the pressure to return.

    Pete
  15. Don't forget to add the Moments from the trail...

    Don't forget to add the Moments from the trail and offset to the self aligning torque of the tyre.

    I think there might be some confusion between max design strength, and expected steering forces....
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    Moke, re Comp strategy and practices to win,...

    Moke, re Comp strategy and practices to win,
    Unlike Kev, I was there, and will accept responsibility. I was in roles directly responsible for the type of things you see going on, FROM WINNING TEAMS....
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    You've touched a raw nerve here Jonny! I won't...

    You've touched a raw nerve here Jonny!

    I won't hijack this thread (much), perhaps this issue should have it's own, but if you want to know why it is the way it is, just look at the treatment UWAM...
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    I think this is just a terminology definition...

    I think this is just a terminology definition issue.
    The more correct term for what you are reading about is "Inclination Angle"

    That is the angle the wheel plane makes to the road

    You may be...
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    Z, There is a rule requiring the brake...

    Z,

    There is a rule requiring the brake components to above the chassis lower surface (T7.1.7), which combined with the template rules, makes that solution very difficult. Especially for those with...
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    A1.3 Good Engineering Practices Vehicles...

    A1.3
    Good Engineering Practices
    Vehicles entered into Formula SAE competitions are expected to be designed and fabricated in accordance with good engineering practices.

    Perhaps this rule could...
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    Westly, the "general" rules has a restriction...

    Westly, the "general" rules has a restriction above 500mm, making the region above the tyre, but bellow 500mm allowed IMO.

    Anyway, for constructive review / editing.....

    T3.5.5 the angle of...
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    I disagree, those words appear in section T9.3.1,...

    I disagree, those words appear in section T9.3.1, quite clearly a sub section of 9.3

    I don't see how anyone could interpret such a sub heading as being generally applicable to all aerodynamic...
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    Actually, there is plenty of real estate on most...

    Actually, there is plenty of real estate on most cars to be able to MOUNT your rear wing in the "Location - General" area between the wheel base, and such have no restrictions beyond the rear...
  24. Very interesting topic, and please let us know if...

    Very interesting topic, and please let us know if you find anything.

    I have some experience with rally, and there they are used to limit the impact from a rock or rut etc. The idea is for the...
  25. 18 to 20 hours is a good long run for those...

    18 to 20 hours is a good long run for those tyres!

    They are worn out. The dimples just show you how your going, not what you have got left in some cases.

    Throw on a new set and you will...
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