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Boxer clutch. 365 v 512

Discussion in 'Boxers/TR/M' started by skl63, Dec 13, 2007.

  1. skl63

    skl63 Karting
    Silver Subscribed

    Dec 13, 2007
    212
    Melbourne, Australia
    Full Name:
    Scott
    Hi.
    I am looking for a carbie car and one of the differences not often mentioned or discussed in these forums is the clutches. I believe the 365 is cable operated single plate whilst the 512 has a hydraulic twin plate arrangement.

    Is the 512 much lighter? and does either last longer than the other? Any other pros and cons,

    Thanks.
     
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  3. Newman

    Newman F1 World Champ
    Professional Ferrari Technician Consultant Owner

    Dec 26, 2001
    13,684
    Canada
    Full Name:
    Newman
    Correct on the differences and the 512 clutches are better and lighter for sure, they last longer but a boxer clutch takes getting used to and there are some do's and dont's......like dont lend the car out or you'll be buying a new clutch the next day!
     
  4. Zarathustra

    Zarathustra Formula Junior

    May 7, 2006
    764
    Hawaii
    Full Name:
    Gary Robinson
    On 512s there is an metal plate between the two clutch plates so the whole clutch package is heavier than a 365. The 365 just used the single plate that was a carry over from Daytonas. The single plate wears much more easily than the double plate.
     
  5. fastradio

    fastradio F1 Rookie
    Professional Ferrari Technician BANNED

    Apr 26, 2006
    3,652
    New England
    Full Name:
    David Feinberg
    I believe that what Paul means by "lighter" is the clutch pedal effort....Considering that depressing the 365 clutch pedal is like steping on a rock, anything would be an improvement!
     
  6. jselevan

    jselevan Formula 3

    Nov 2, 2003
    1,858
    The move to double plate was in response to several issues. As mentioned, pedal pressure was high on the 365 cable system. As the torque increased on the 512, greater clamping pressure or more surface area was needed to prevent clutch slippage. The solution was to move to the twin disk system, which solved both issues: clamping pressure and surface area were increased, and the hydraulic system reduced pedal pressure.

    Jim S.
     
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