Roll Stop Newbi Question | FerrariChat

Roll Stop Newbi Question

Discussion in '360/430' started by andrews1958, Mar 27, 2014.

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  1. andrews1958

    andrews1958 Karting

    Apr 29, 2013
    166
    Maine / Namibia
    Maybe someone can tell me what happen or possibly damaged.

    I was loading my 2003 Modena F1 up on to a car trailer. I had it in first gear and gave it a little gas to hold it in place on the ramp. It started rolled back a little as I let off the gas and so I put on the brake which caused the car to stall.

    My clutch was just checked and it has about 70% wear left in it.

    Is this normal? I could see this happening with a manual trans but this is both my first Ferrari and F1 paddles so I am not sure.
     
  2. Teachdocs

    Teachdocs Formula Junior

    Sep 3, 2012
    568
    Kansas City area
    Full Name:
    Chad
    The scenario you describe could be normal. It is not advised to hold the car in place using just a little gas as this causes a fair amount of clutch slip. The clutch was probably partially engaged and when you hit the brake, it stalled at that low RPM.

    Best advice when loading a car onto a trailer is to use a winch and pull it on. Much easier on the clutch.

    Second best advice is to "bump forward" as opposed to "slip forward". The idea is to have the clutch fully engaged or fully released but not slipping. Bumping forward involves a little tap of the gas to engage the clutch and then the car bumps forward a foot or so. You have to be lined up well so you don't hit anything in the trailer. The fewer of these bump forwards the better. Get yourself lined up and have a friend watch, then bump forward 2-3 feet, brake, reassess position, bump forward again, repeat.

    Slipping the clutch in reverse gear is even worse according to many FChatters. Several have reported clutch damage from repeated backing out a sloped driveway or repeated backing onto a trailer.
     
  3. Stout

    Stout Formula Junior

    May 9, 2013
    259
    Helotes, TX
    Full Name:
    Victor
    As I understand it, slipping the clutch in first gear, like in heavy traffic or a trailer loading, will cause the disk to expand. If the clutch PIS setting is too close this will cause the engine RPM to be pulled down due to the clutch friction and the TCU will interpret this as a problem causing an engine shutdown. Once the disc cools down and contracts, it works fine again.

    I read that somewhere....
     
  4. bigsquat

    bigsquat Formula Junior
    Rossa Subscribed

    Nov 4, 2013
    479
    Westchester, NY
    Full Name:
    Troy
    #4 bigsquat, Mar 27, 2014
    Last edited: Mar 27, 2014
    This happens to me in my 2003 F1 Modena. I have a steep driveway that turns just as it meets my garage and to make matters worse I park on a 4 post lift so I have to be very careful how I pull in. This having to go slow up the hill has caused me stall a few times though I am getting better at it and have been using a techniques as Teachdocs has described. The car always starts right up and goes without any issues and the dealer did not find any permanent issues upon inspection. The fact that you can smell clutch afterwards is pretty disheartening though and I can see the dollars flowing out of my bank account.
     
  5. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    39,167
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    The reason the clutch slips more in reverse than 1st is that reverse is almost as high as 2nd gear. Intentionally slipping the clutch in 1st or reverse will really shorten clutch life.
     
  6. Stout

    Stout Formula Junior

    May 9, 2013
    259
    Helotes, TX
    Full Name:
    Victor
    The clutch never fully engages in reverse. It's always slipping. A lot of reverse will definitely shorten clutch life.
     
  7. Skidkid

    Skidkid F1 Veteran
    Owner Rossa Subscribed

    Aug 25, 2005
    9,523
    Campbell, CA
    Full Name:
    John Zornes
    Taz is right, again. It will fully engage in R but you have to be going pretty fast because the gear is tall.
     
  8. Stout

    Stout Formula Junior

    May 9, 2013
    259
    Helotes, TX
    Full Name:
    Victor
    I guess I've never gotten it up to speed in reverse. LOL

    I was under the impression that it was not a speed issue with reverse. It just will not lock up. But I don't think I'm going to be trying it anytime soon.
     

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