McLaren F1 suspension

[amaury_reno]

Hi, im doing an assignment for my school, its a free-for-all presentation which means theres no specific topic and we can choose our own topic, anywayyy my topic is going to be about the McLaren F1, and as im breaking it down bit by bit, im wondering, is the McLaren F1 using double wishbones suspension both front and rear? And if so, does anyone of u have any pics about it ?? i could be nothing more than please if someone could share them ~ thanks !!

[dbsf1]

Feel like I'm cheating, I don't really know myself, but I can quote this from Wikipedia!

Originally Posted by Wikipedia (McLaren F1 - Suspension)

Steve Randle who was the car's dynamicist was appointed responsible for the design of the suspension system of the McLaren F1 machine. It was decided that the ride should be comfortable yet performance oriented, however not as stiff and low as that of a true track machine, as that would imply reduction in practical use and comfort as well as increasing noise and vibration, which would be a contradictory design choice in relation to the former set premise – the goal of creating the ultimate road car.
From scratch the design of the F1 vehicle had strong focus on centering the mass of the car as near the middle as possible by extensive manipulation of placement of i.a. the engine, fuel and driver, allowing for a low polar moment of inertia in yaw. The F1 has 42% of its weight at the front and 58% at the rear, this figure changes less than 1% with the fuel load.
The distance between the mass centroid of the car and the suspension roll centre were designed to be the same front and rear to avoid unwanted weight transfer effects. Computer controlled dynamic suspension were considered but not applied due to the inherent increase in weight, increased complexity and loss of predictability of the vehicle.
Damper and spring specifications: 90 mm (3.5 in) bump, 80 mm (3.1 in) rebound with bounce frequency at 1.43 Hz at front and 1.80 Hz at the rear, despite being sports oriented these figures imply the rather soft ride and will inherently decrease track performance, but again, the McLaren F1 is not in concept nor implementation a track machine. As can be seen from the McLaren F1 LM, McLaren F1 GTR et al., the track performance potential is much higher than that in the stock F1 due to fact that car should be comfortable and usable in everyday conditions.
The suspension is a double wishbone system with an interesting design, i.a. that longitudinal wheel compliance is included without loss of wheel control, which allows the wheel to travel backwards when it hits a bump – increasing the comfort of the ride.
Castor wind-off at the front during braking is handled by McLaren's proprietary Ground Plane Shear Centre – the wishbones on either side in the subframe are fixed in rigid plane bearings and connected to the body by four independent bushes which are 25 times more stiff radially than axially. This solution provides for a castor wind-off measured to 1.02 degrees per G of braking deceleration. Compare the Honda NSX at 2.91 degrees per G, the Porsche 928 S at 3.60 degrees per G and the Jaguar XJ6 at 4.30 degrees per G respectively. The difference in toe and camber values are also of very small under lateral force application. Inclined Shear Axis is used at the rear of the machine provides measurements of 0.04 degrees per G of change in toe-in under braking and 0.08 degrees per G of toe-out under traction.
When developing the suspension system the facility of electro-hydraulic kinematics and compliance at Anthony Best Dynamics was employed to measure the performance of the suspension on a Jaguar XL16, a Porsche 928S and a Honda NSX to use as references.
Steering knuckles and the top wishbone/bell crank are also specially manufactured in an aluminium alloy. The wishbones are machined from a solid aluminium alloy with CNC machines.

Whatever you do, please make sure you don't put up a picture of a Pagani Zonda like comes up in a Google Image search of "McLaren F1"!

Sounds like a great topic
Hope it helps

[amaury_reno]

haha ya i know that, thanks anyway.
Nope, am doing a proper presentation of McLaren F1 not Pagani Zonda, i am quite a fan for the F1 btw ^^

[hurstg01]

Try here . Flemke knows his stuff, is changing the set up on his F1 and there are a few cool photos in that thread for you to have a look at

Good luck with the assignment

[amaury_reno]

Originally Posted by hurstg01

Try here . Flemke knows his stuff, is changing the set up on his F1 and there are a few cool photos in that thread for you to have a look at

Good luck with the assignment

permission to say F*cking hell! Thanks man !! this is just what i need ~~~ good man ~~

[tortoise]

Originally Posted by dbsf1

Strictly speaking, at the rear it has lower and upper wishbones but, at the front, there is a lower wishbone combined with an upper rocker.
The rocker is used instead of a wishbone in order to accommodate the inboard springs and dampers, which are central and horizontal over the pedals.