Lancia B20 question about rear wheels | FerrariChat
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Lancia B20 question about rear wheels

Discussion in 'Other Italian' started by bigodino, Dec 23, 2024.

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  1. bigodino

    bigodino F1 World Champ
    Silver Subscribed

    Apr 29, 2004
    13,088
    The Netherlands
    Full Name:
    Peter den Biggelaar
    #1 bigodino, Dec 23, 2024
    Yesterday I visited a museum with a Lancia B20 on display. I noticed something at the rear wheels that I'm unable to identify. I found a picture online:
    Image Unavailable, Please Login
    What is that in the center?
     
  2. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    2,031
    #2 DWR46, Dec 23, 2024
    It is the outer U-joint of the halfshaft. By moving the end of the halfshaft as far outboard as possible, they reduced the angles that the halfshaft has to move as the suspension goes up and down. This makes the halfshaft rotate in a smoother series of cycles as it turns. Constant velocity joints, today, have solved most of these problems. Lancia always had unique and well thought out engineering.
     
    johnei, Zenobie, lgs and 3 others like this.
  3. Anthony Rapuano

    Anthony Rapuano Karting

    Aug 16, 2022
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    Anthony V Rapuano, Jr.
    #3 Anthony Rapuano, Dec 23, 2024
    That car also has a transaxle and inboard rear brake drums, if I'm not mistaken, which allows that outboard rear CV joint to be moved as far out as possible.
     
    TheMayor and bigodino like this.
  4. PG1964

    PG1964 Formula Junior

    Nov 2, 2010
    517
    Torino, Italy
    #4 PG1964, Dec 28, 2024
    You made no mistake.
     

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