Page 2 of 2 FirstFirst 12
Results 11 to 18 of 18

Thread: Automatic Spoiler - rise and unpack jsut like porche but with extras

  1. #11
    North of the land of Hey Huns
    Auto Apps:loading...

    Join Date
    Jun 2004
    Location
    Westminster, MD
    Posts
    2,144
    Wasn't there an article somewhere which proved negligible gains for spoilers below 100mph or something?

    tempgp: I mean no offense by this, but I suggest proofreading your posts or getting a browser with a spellchecker before posting. People might take you more seriously if your posts don't look like they were written by a 12 year old.
    "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
    RevFE
    My Shop

  2. #12
    Maximum Bitrate tempgp's Avatar
    Join Date
    Jun 2007
    Posts
    663
    oh sorry im just 7 y/o so your comenta is N/A, but if you relly prefer so I can post it in Russian

    As to 100mph efficiency. Thats all depands on your angle of the wing. If you dont plan to travel more then 80 you can safly put say 14-18 degrees (but if you hit 100+ speeds you will feal that back of the car is pressed down to the ground) and if you go to say 135 (or more if you dont have governor) then you may brake strings or lover the car to the level of the ground and get lots of spartks =)

    In another words speed + angle = derectly propostional to efficiency. Min speed though is 60mph. You can try yourself, get 40+ mph and put your nahs outside the window, make sure your fingers are close togather then play with different angle position, then go to ~60-80 mph and see the difference. (Airctaft take off speed is 60-80mpg. 60 for small propeler one, 80 for jets... or hmm well thats in should be in km/h, russian Mig29 takes of at 80Km/h with flaps extended)
    Automotive LED Headlight Module High Power VS HID NEW
    Acura / Honda A/V CarPC Adapter GA-NET+ - Convert your native navi DVD unit to CarPC + Dash buttons are usable in car pc!!!
    Centrafuse Garmin Mobile PC Skin - GMPC Rebellium Skin

  3. #13
    Maximum Bitrate Crinos's Avatar
    Join Date
    Mar 2009
    Location
    Kristiansand, Norway
    Posts
    489
    Quote Originally Posted by tempgp View Post
    to me spoiler is just a wing that perfoms regular airdynamic functions. If you have RWD then if you have - angle (negative) then there is more traction to your tires. So if you want to make quick turn you a** wont get losesn. Sure you can do norvegian turn and you wont loose control.
    What the **** is a "Norwegian turn" ???
    Just curious, since I'm a Norwegian myself....

  4. #14
    Maximum Bitrate Crinos's Avatar
    Join Date
    Mar 2009
    Location
    Kristiansand, Norway
    Posts
    489
    Quote Originally Posted by tempgp View Post
    oh sorry im just 7 y/o so your comenta is N/A, but if you relly prefer so I can post it in Russian

    As to 100mph efficiency. Thats all depands on your angle of the wing. If you dont plan to travel more then 80 you can safly put say 14-18 degrees (but if you hit 100+ speeds you will feal that back of the car is pressed down to the ground) and if you go to say 135 (or more if you dont have governor) then you may brake strings or lover the car to the level of the ground and get lots of spartks =)

    In another words speed + angle = derectly propostional to efficiency. Min speed though is 60mph. You can try yourself, get 40+ mph and put your nahs outside the window, make sure your fingers are close togather then play with different angle position, then go to ~60-80 mph and see the difference. (Airctaft take off speed is 60-80mpg. 60 for small propeler one, 80 for jets... or hmm well thats in should be in km/h, russian Mig29 takes of at 80Km/h with flaps extended)
    Takeoff speed for a MIG-29 is 260-280 kph (aprox 481 - 518 Km/h).

    http://www.saunalahti.fi/fta/MiG-29-2.htm
    http://www.zap16.com/mil%20fact/mig-29.htm
    http://warfare.ru/?catid=255&linkid=1600

  5. #15
    North of the land of Hey Huns
    Auto Apps:loading...

    Join Date
    Jun 2004
    Location
    Westminster, MD
    Posts
    2,144
    http://www.aerospaceweb.org/question...ce/q0088.shtml

    That's way faster than 80mph tempgp. You still sure they are effective at such slow speeds?

    As to 100mph efficiency. Thats all depands on your angle of the wing. If you dont plan to travel more then 80 you can safly put say 14-18 degrees (but if you hit 100+ speeds you will feal that back of the car is pressed down to the ground) and if you go to say 135 (or more if you dont have governor) then you may brake strings or lover the car to the level of the ground and get lots of spartks =)
    So you're saying that yes, wings at any reasonable angle are not effective below 100 mph?

    On a side note, if your springs break before bottoming out, you need to get new springs. The average passenger car probably would require 600+lbs of force to bottom out on the suspension hard stops. Are you saying a normal sized aftermarket wing (eg not something sprint-car sized) puts down that much force at 135mph? Please tell us where you found this information. Your simulator does not take into account the aerodynamics of a car, only for freestanding wing shapes which is an entirely different ballgame. You as a self proclaimed aircraft engineer should understand this.
    "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
    RevFE
    My Shop

  6. #16
    Confusion Master
    Auto Apps:loading...
    Enforcer's Avatar
    Join Date
    Sep 2003
    Location
    If you go down to the woods today, You're sure of
    Posts
    14,626
    Quote Originally Posted by Crinos View Post
    What the **** is a "Norwegian turn" ???
    Just curious, since I'm a Norwegian myself....

    I think he he means the Scandinavian Flick as used by the Rally car drivers,



    Basically you turn away from the corner first then turn into the corner.

    It helps getting the backend sliding out.

  7. #17
    Maximum Bitrate Crinos's Avatar
    Join Date
    Mar 2009
    Location
    Kristiansand, Norway
    Posts
    489
    Ah yes.. when one intentionally oversteer the car.
    Where wondering if it had anything to do with the Rally driver, Petter Solberg.

  8. #18
    Maximum Bitrate tempgp's Avatar
    Join Date
    Jun 2007
    Posts
    663
    I use NASA wing simulator to calculate the lift waights. As to take off speeds i guees i was wrong, i meesed it up with turbine start speed.
    The simulator only for wing itself, nothing else. But in general if you have trunk lower then your rear window then wair will get compressed and flow down (that it caused ai vacum behind the car on hifger speeds) so technically the air density should be the same as in aircraft.

    Ok i recalculated all variables for 4x1 feet wing including the fact that wind will be coming fropm top of the windshield...

    Speed: 80mph
    Lift: -180lbs

    Speed 135
    Lift: -513

    (if your springs handle 600lbs, i would not risk to put extra 500 lbs on them at that speed)

    How how effective extra 180 pounds are for your driving that i have no idea. But thats extra friction for your tires so i would assume car will become less "slippery"

    thats shape is no longer a flat eclips so to pull it out if the trunk i need to have chanber with opening door
    Automotive LED Headlight Module High Power VS HID NEW
    Acura / Honda A/V CarPC Adapter GA-NET+ - Convert your native navi DVD unit to CarPC + Dash buttons are usable in car pc!!!
    Centrafuse Garmin Mobile PC Skin - GMPC Rebellium Skin

Page 2 of 2 FirstFirst 12

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •