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

  1. #1
    Maximum Bitrate tempgp's Avatar
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    Automatic Spoiler - rise and unpack jsut like porche but with extras

    hey all i have another crazy idea.
    I want to build automatic spoiler that sits inside flat surface of the trunk but then in needed it gets outside and unpacks itself.

    Basically want to combine original idea from Porshe + aircraft wing folding technology + cool useless actions from transformers cartoons just for fun. Still want to keep car to look conservative (no sports) but if needed lets unpack.

    Technically considering my aircraft engineering experience should be a peace of cake to build. Only problem i can not use gas tubes or oil based actuators as i don't drive truck. I have pneumatic compressor but its low pressure -- no good. So i have to stick with linear stroke actuators. good once are mad expansive, and cheap one too fast in motion so it will brake all mechanics ... so i probably will end up building my own version. Or maybe will use rotary actuators. if theu dont chop my fingers they can lift just about anything

    So what do u think? Lets build a transformer car
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  2. #2
    FLAC
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    i would think a basic servo motor could work well. that would allow you to go at variable speed

  3. #3
    Maximum Bitrate Crinos's Avatar
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    What would the pressure on the motor(s) be when the spoiler should unfold?

    Since you have a spoiler, my guessings is that it will give some amount of downforce, and the downforce increase with speed.

  4. #4
    Maximum Bitrate tempgp's Avatar
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    if we treat it as aircraft wing (tail eleron) then at speed 60mph temp 58F avarage pressure would be 14 PSI (under the wing) oh ye thats calculating at 0 agngle.
    Now if u want get bette traction at the same speed we can force your rear part of the car down and get lift of -904 lbps at 8 Degrees (i used 8 from reference to speed boat standard) Of cause those 900 punds is what will be pressing on the frame... so i will need locking mechnizm. But for parts when wing is being actually released from the trunk we can keep angle at 0 % relative to the surface (we can use gyro to get surface level) in that case lift will be 0 lbs and only pressue thta applies is the wind pressure which is only 14 psi (just about any actaultor will be able to bare that)

    I say interesting projject to play with... but now i need some one with carbon fiber trunk cover to put it in =)

    I also builded concept actuator yesturday night. Now i need to improve it to be able to hande waights caz i builded it from icecreme sticks =)
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  5. #5
    Maximum Bitrate tempgp's Avatar
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    here are some simulations that i just run
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  6. #6
    Variable Bitrate csfile's Avatar
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    subscribed...this looks like it can be a very interesting project.

  7. #7
    Maximum Bitrate tempgp's Avatar
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    lol now i need some inspiration and budjet to finish it + good gas mask for all fabrcations =)

    Welll will post few progress pix tommorow
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  8. #8
    Constant Bitrate
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    Other than the SHOW-OFF factor, how much percentage of cars really needs a spoiler?

    I don't understand why FWD cars ever need a rear spoiler at all.

  9. #9
    MySQL Error soundman98's Avatar
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    Quote Originally Posted by DigitalVampire View Post
    Other than the SHOW-OFF factor, how much percentage of cars really needs a spoiler?

    I don't understand why FWD cars ever need a rear spoiler at all.
    while the effect is better enhanced by having a car with awd, or rwd, the spoiler on fwd cars helps keep the rear wheels planted, to an extent(without it it sometimes feels like the back of the car is on marbles). i think that there is a argument though that a 6ft tall, 6 foot wide 'show' spoiler has no better effect than a standard 2 foot tall 4 foot wide performance spoiler has.

  10. #10
    Maximum Bitrate tempgp's Avatar
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    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.

    Alsio iffor any reason you want you rear to loose friction you can set angle to + and all liftpower will apply. Look at rendering charts on how much friction/lift can get

    Get your car waight and see Lift value... Lift is how much wight wing can lift at any given spees, ange combination. POsitive value you r trying to take off the ground. Negative presses u in the graound.

    Persinally I dont need spoiler, i just wanna build something cool abd cheper then self maid aircraft =)
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