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Recent content by Bourgest

  1. Bourgest

    Why the RA has so big influence on steering precision/feel

    KFC= Kentucky Fried Chicken K&C= Kinematics and Compliance The difference between -0.0 and +0.0 I'm not so sure of either. + is toe-in and - is toe-out. Thanks for your answers though. I think also it has a lot to do with the time delay in lateral acceleration build up between FA and RA. Best...
  2. Bourgest

    Why the RA has so big influence on steering precision/feel

    Hi Had to drive another cost reduction measure the other day. In a vehicle with a torsion beam RA with additional ARB it was suggested to remove the ARB with expected results. So how could I theoretically explain why the steering feel is more compliant and the vehicle has poor precision. The...
  3. Bourgest

    Interesting power pack and RA design

    Hi Found this pic of a new vehicle from Weber sports cars (www.weber-sportcars.com). The power pack packaging is nice. Looks very compact. The car shall weigh 1100Kg and have 900Hp/1050Nm. Really like the RA design especially the construction with the sABS connected to the lower wishbone. The...
  4. Bourgest

    peugeot 306 rear suspension

    I managed to find a picture. Hope it helps. Best regards René le Grand www.bourgest.comhttp://files.engineering.com/getfile.aspx?folder=90234c57-4e4b-4ddc-9d53-59a0b476286a&file=Reanult19RA.jpg
  5. Bourgest

    peugeot 306 rear suspension

    Its very similar to the Renault 19 (1989) RA. Sorry, Greg here comes another hand wavy explanation. The "Yellow" tube is actually a triple layered in the middle. The LH solid torsion bar is connected to the body on the LH side and runs inside the tube to the middle where it is fixed to this...
  6. Bourgest

    longitudinal forces from braking vs. bumps

    This is what I googled... Best regards René le Grand www.bourgest.comhttp://www.lotusespritworld.com/EOtherstuff/sid.html
  7. Bourgest

    longitudinal forces from braking vs. bumps

    Just scrolled over the article I have :An presentation at ImechE by S.J.Randle back in 1993. They accoplished 970Nmm at the WC and 2380Nmm at the CP unfortunatelly the other measured cars are only giving one or the other ;-) These where measured values 2.5:1 but they actually calculated a 4.7:1...
  8. Bourgest

    longitudinal forces from braking vs. bumps

    Well excuse me :-), didn't know the level of expertise here so kept it simple. I'll be more precise next time. Do you mind me asking how big a difference was used between X,Z stiffness and Y stiffness? Best regards René le Grand www.bourgest.com
  9. Bourgest

    longitudinal forces from braking vs. bumps

    The McLaren F1 has a "normal" front axle double wishbone suspension. The control arms where not directly attached to the body but where attached to a "subframe". Not your regular subframe but two positioned vertically and longitudinal, one at each corner. This subframe was now mounted to the...
  10. Bourgest

    longitudinal forces from braking vs. bumps

    Hi there, newbie signing in. To my knowledge the longitudinal compliance of the wheel centre is the important factor regarding impact harshness felt by the passenger. The braking forces act at the tyre-road patch. This could be designed stiffer longitudinally than the wheel centre point...

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