f1suspension

Here are our CFD links and discussions about aerodynamics, suspension, driver safety and tyres. Please stick to F1 on this forum.
sephiroth
sephiroth
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f1suspension

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Monstrobolaxa
Monstrobolaxa
1
Joined: 28 Dec 2002, 23:36
Location: Covilhã, Portugal (and sometimes in Évora)

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WOW....this seems quite original....quite interesting too....just think it would be a little to big and heavy compared to the suspensions used in F1.....but for a Le Mans car is look quite usable and original....sure to catch the eye of all the journalists around! Kind of reminds me of a monoshock.....but slightly diferent.....could the "poster" give us some more info on this suspension?

Reca
Reca
93
Joined: 21 Dec 2003, 18:22
Location: Monza, Italy

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Monstrobolaxa wrote: Kind of reminds me of a monoshock.....
Like a picture of Varenne kind of reminds of an horse ;-)

dumrick
dumrick
0
Joined: 19 Jan 2004, 13:36
Location: Portugal

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No, in a chunky way, this is a monoshock system!!! Check it in http://www.scarbsf1.com/Monoshock.html. I can't open the drawings anymore, but I've aready checked it in the past.

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schumiGO
0
Joined: 06 Jun 2004, 16:04
Location: Moscow

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How can you change spring and settings in this system??
System is realy fantactic........
For F3 and Renault, Gloria, Monza such system i possible to use...

sephiroth-peter skorvaga
sephiroth-peter skorvaga
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NEXT DISCUSION OF THIS MONOSHOCK IN

"NEW SUSPENSION SYSTEMS"

red300zx99x
red300zx99x
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Guest
Guest
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Correct me if im wrong...

Dont you want the opposite of what this system does?

When the outside wheel is compressed the inside one raises?

What are you guys so excited about?

Guest
Guest
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Ok what i tried to say was..

When going around a corner, the outside wheel compresses while the inside raises (the ground clearance). This is what anti-roll bars are trying to prevent?

Cool concept though

RacingManiac
RacingManiac
9
Joined: 22 Nov 2004, 02:29

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The spring on either of the slider are to act as an conventional antiroll bar would, to counter act the motion of rolling. If the car were to turn left, which would cause right wheel to be in bump, left to go to droop, which would shift that block left of the car, while the spring on the left side would resist that.

On a Formula Renault 1600/2000 style shuttle bar, the springs are actually bevel washers...by putting them in different order, you can change the roll stiffness....ie:

full stiff: <<<<<<[]>>>>>>

a click from full stiff: <<<<<>[]<>>>>>

full soft: <><><>[]<><><>

Those "<" are bevel washer and their orientation, and "[]" is that block in the middle where pushrod feeds to...

Now to the "new" design though, I still dont see the shock by being supported on 2 flimsy plate is a good thing. on Formula Renault the single shock feeds into the monocoque, the same is happening to any other race car, shock always feeds into a rigid member....

Guest
Guest
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Ok there is something im missing then. This is how i see it, where am i going wrong?

From the viewpoint of sitting in the drivers seat:

Going around a left hander:
The right wheel gets compressed, as the car starts to roll clockwise.
The compression of the pushrod moves the slider to the left.
The springs resist this motion.
The slider pushes the left hand pushrod down relative to the chassis.
The left wheel moves down relative to the chassis - which causes more roll...

How i understand an antiroll bar to work is that when you compress the right hand wheel it also raises the left hand wheel. This raising of the left hand wheel counters the rollong action since the car has to rest on its wheels.

This setup does the opposite to an antiroll bar.

Reca
Reca
93
Joined: 21 Dec 2003, 18:22
Location: Monza, Italy

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schumiGo wrote: For F3 and Renault, Gloria, Monza such system i possible to use...
F.Gloria has at both front and rear the same, very standard, design, push rods with two dampers, coaxial springs and anti roll bar.
Guest wrote: How i understand an antiroll bar to work is that when you compress the right hand wheel it also raises the left hand wheel. This raising of the left hand wheel counters the rollong action since the car has to rest on its wheels.
the antiroll bar is simply a torsion bar connected to left and right rockers that opposes the anti-symmetrical movement of the suspensions. When the rockers move in the same direction as in pitch (symmetrical movement both wheels is bump or both in droop) there’s no torsion on the antiroll bar so it just rotates, freely without opposing the rockers motion. In roll (anti-symmetrical movement, one wheel in bump the other in droop) the two rockers move in opposite directions, thus applying torsion to the antiroll bar, the torsional stiffness of the bar counteracts the anti-symmetrical movement limiting roll.
In the monoshock, as RacingManiac said :
Left hander => roll clockwise, left wheel in droop, right in bump => the rocker slides to the left => the springs on the left side counteract the motion limiting roll.

Guest
Guest
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Firstly i would like to thank you guys for your patience...

So all an antiroll bar does is increase the spring/damper rate when going around a corner? You ignore the lifting of the inside wheel?

Surely independent suspensions is better? or in some cases would the simplicity of this design out weigh the disadvantages?

I would like to apologise for my stubbornness by saying that i thought i knew what was going with anti-rollbars... This if i understand it correctly has rocked my world! :oops:

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peter skorvaga
0
Joined: 23 Nov 2004, 10:11

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The suspension is independent. The Pushrods motion is telescopic and in Pushrod is an integated hydraulic stabilisator. The first Pushrod moves second Pushrod with one of two hydraulic stabilisators.

manchild
manchild
12
Joined: 03 Jun 2005, 10:54

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Haven’t anyone noticed that there is a damper missing? Those two horizontal springs on the slider axle would oscillate without anything to absorb that oscilations and slow them down. At least one damper should be added in order to make this system work.