Lotus 99T, McLaren MP4-5 front pushrods; how do they work?

Here are our CFD links and discussions about aerodynamics, suspension, driver safety and tyres. Please stick to F1 on this forum.
marcush.
marcush.
159
Joined: 09 Mar 2004, 16:55

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

wesley123 wrote:such an device wouldnt even work anymore on current F1 cars, the nose is simply too high to create the desired pick up points, with thelowest allowed nose these points would even be too high(the BGP001 was on the lowest allowed point), thus an pushrod would be the way to go.
yes or no...you could possibly use the area obove the splitter to position the front dampers and springs it would not be that much different to what RedBull is doing with their rear pullrod arrangement....?possibly one area you could shift significant masses closer to the CoG.of course with fixed weight distribution your scope has to be to move the parts with higher specific weight as low as possible ,which is not done at this time at the front.(v-section tub =high monted rack ,pushrod =high monted torsionbars and rockers).

imightbewrong
imightbewrong
17
Joined: 07 Aug 2008, 16:18

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

747heavy wrote:I think this video just explains in basic terms how a pull rod suspension works in general.
I don´t think that anything else can/should be taken from it.
If you look, the angle and position of the pull rod if totally different from the real car.
It neither shows the correct position of the parts (pull rod/dampers) nor does it include inerters or 3rd spring/damper elements.
I still feel, that it shows the basic function of a pull rod suspension rather nicely, and that was the question in the OP.
I don´t think that it is a true/valid representation of the actual RB6 layout.
Gotcha, that's what I though!

newyorkkopter
newyorkkopter
0
Joined: 16 Aug 2010, 23:45

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

wow guys thanks for all your input. It wasn't in vain; I get it!
I can't see through the MP4-5's tub, but now it makes sense how it could work
What I wasn't getting was the pullrod setup with a vertical shock, but not anymore thank God
Excellent finds, I mean really

Once again, thanks for all your help
Image
It makes sense!

User avatar
747heavy
24
Joined: 06 Jul 2010, 21:45

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

cut away from the McLaen suspension:

Image
"Make the suspension adjustable and they will adjust it wrong ......
look what they can do to a carburetor in just a few moments of stupidity with a screwdriver."
- Colin Chapman

“Simplicity is the ultimate sophistication.” - Leonardo da Vinci

User avatar
ringo
230
Joined: 29 Mar 2009, 10:57

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

Anyone ever seen the rb5 or rb6 suspension parts on the gearbox?
There were some shots last year, but the links are no longer working.
For Sure!!

marcush.
marcush.
159
Joined: 09 Mar 2004, 16:55

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

this is the best(!) pictures I could find ..

Image
Image
Last edited by marcush. on 02 Sep 2010, 21:51, edited 1 time in total.

User avatar
ringo
230
Joined: 29 Mar 2009, 10:57

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

Looks like some of the parts go through the bell housing ?
For Sure!!

User avatar
747heavy
24
Joined: 06 Jul 2010, 21:45

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

They probably have their dampers & inerter inside or below the bellhouse,
which makes for good CoG height, and neat rear bodywork on top of the g/box.
"Make the suspension adjustable and they will adjust it wrong ......
look what they can do to a carburetor in just a few moments of stupidity with a screwdriver."
- Colin Chapman

“Simplicity is the ultimate sophistication.” - Leonardo da Vinci

marcush.
marcush.
159
Joined: 09 Mar 2004, 16:55

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

this is of course RB5 ,

the RBR6 has the pull rod considerably higher placed ..level with the lower wishbone when entering the bodywork but pictures nope .I.m quite sure the layout cannot be with a one sided lever as with that approach you ´d not get significant damper travel ,it must be a rockertype arrangement so you can get some multiplication of travel and still the possibility to place the dampers inside the gearbox bellhousing ,maybe transversal above the cluch and the torsionbars in vertical orientation tilted forward a fair bit at the top. wonder how to acess the dampers then..

User avatar
747heavy
24
Joined: 06 Jul 2010, 21:45

Re: Lotus 99T, McLaren MP4-5 front pushrods; how do they wor

Post

ringo wrote:Anyone ever seen the rb5 or rb6 suspension parts on the gearbox?
There were some shots last year, but the links are no longer working.
best one I could find so far.
but not much to see :(

Image
"Make the suspension adjustable and they will adjust it wrong ......
look what they can do to a carburetor in just a few moments of stupidity with a screwdriver."
- Colin Chapman

“Simplicity is the ultimate sophistication.” - Leonardo da Vinci