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Do spoilers work?

Discussion in 'General' started by KamilA, Aug 4, 2019.

  1. KamilA

    KamilA Box Kit

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    Does the spoilers on the cowls (i.e. sabers, most magnum cars) actually provide down thrust or does it actually help aerodynamically?

    I usually race in prostock and i've seen most people just opt to remove them since they tend to break if ever the car flips off the track.
     
  2. Drew

    Drew Carbon Fiber Dust

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    Depends...

     
  3. ltr74

    ltr74 FRP Popsicle

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    The standard ones no. There have been some gimmicks where having extra downforce was useful and building big spoilers were helpful, but it has not been a thing for a few years.
     
  4. yao wei

    yao wei Spacer

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    there's 2 japanese videos i have watched before about mini4wd wing and spoilers, but can't find them
     
  5. Area51Racer

    Area51Racer Box Kit

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    I'm working on a ground effects car. I'll post pictures as I go along and result of my testing. The video shown was really a bad example of what I would refer to as a wing or ground effects. The nice thing about ground effects, is that scale of size doesn't matter.
     
  6. yao wei

    yao wei Spacer

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    you might be interested in this video by team flazh tech
     
  7. yao wei

    yao wei Spacer

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    or how about this channel, mini aero test. you can visualize the airflow of various mini 4wd cars
    https://www.youtube.com/channel/UCC0EtLwOznSEuNaVZlO2lgQ
     
  8. Area51Racer

    Area51Racer Box Kit

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    Ok, here's my first attempt at a Mod Car. Hard to see, but there is a spoiler at the rear. And planning to add winglets to the damper mounts and possible a splitter to the front.
     

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  9. Area51Racer

    Area51Racer Box Kit

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    Did my first test yesterday, with no body, and using a stock motor just to see how the chassis worked. Then, tested with the body on, same motor. The rear wing worked well, to the point it was causing the car to nose up on jumps. Then switched to a Hyper-Dash Pro, using 4:1 gears. After some adventure, and gluing the tires to the rims, I added a rear brake sponge and was able to get in several fast laps. Came home and made some changes to the rollers, and added a splitter to the front. Will update after my next test.
     
    Reuben Herries and yao wei like this.
  10. Feroce

    Feroce Box Kit

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    Mini4wd Speed is too low for aerodynamic to really work. Time ago spoilers were a thing (i.e. using items 15115 or 15199 on the front to improve nose dives), but they were useful because of their weight more than else.
     
  11. SignOfZeta

    SignOfZeta Spacer

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    Yeah, the forces just aren’t there to make it work. Also, there isn’t any use for it! With 1/1 racing cars you need the downforce for grip in the corners. A Mini4WD already has infinite grip, the walls, so if you could actually produce downforce at 15mph in 1/35 scale you’d have more of a penalty from the drag produced than you’d get from increased tire grip.

    In Mini4WD more grip is usually bad since it causes axles to bind in the corners.
     
  12. Reuben Herries

    Reuben Herries Spacer

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    I get a little frustrated with those blanket replies of down force does not work.... I was a 'real' race engineer in MINI Challenge Australia.... we tried adding 2*, 4* and 6* of downforce to the small roof spoiler to try a clear a particular corner that the drivers were having trouble getting through.... they all came back saying that adding downforce increased grip and confidence so that they could now take the corner flat at only 120km/hour. Hence yes it does work! but- as SignOfZeta stated above, most of the time in MINI 4WD racing we want less grip in the corners (low friction tyres) and roller downthrust is to keep the car in the track- not increase the tyre grip. It is a hard balance to get and understand.

    I am sure a car with great aero down force would clear a 3 lane LC easier than one without - but at a cost of speed on the straights!
     
  13. Feroce

    Feroce Box Kit

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    Mini4wd aren't fast enough to move air to make aerodynamic work as intended for real/sport cars, plain and simple.
     

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