Hans device with 4pt belts | FerrariChat

Hans device with 4pt belts

Discussion in '458 Italia/488/F8' started by wurlie, Oct 6, 2014.

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  1. wurlie

    wurlie Rookie

    Apr 24, 2011
    42
    Hello everyone!
    I was wondering if anyone has tried running a helmet with a Hans device using the factory installed 4pt belts in a Speciale?
    Many thanks for sharing your experience,
    w
     
  2. Savageulm

    Savageulm Formula Junior

    Nov 15, 2010
    356
    Italy/Europe
    very nice question since I am ready to order it asap...since I will test finally the car on a race track during next week.Theorically it should not be a problem at all.
     
  3. MuratC

    MuratC Formula Junior

    Jul 6, 2014
    539
    Istanbul, Turkey
    I haven't used an original 4-pt Ferrari harness with a HANS device but as I seen its shoulder belts are anchored too wide apart. For a HANS device to work properly, shoulder belts must seat on them perfectly and the distance between anchoring points should at a specific value (usually much lower than the distance at the shoulders) . Please read pages 12-14 Installation- and Operating Instructions
     
  4. wurlie

    wurlie Rookie

    Apr 24, 2011
    42
    Thanks Murat!
    I have a track car with a full cage and a race seat, so am concerned with exactly what you are pointing out!
    Savageulm - please let us know how you get along on track in general - I have been following your adventures - and hope to join you next spring, as we are also very close geographically :)

    Any other experiences?
    Best, w
     
  5. RC33

    RC33 Formula Junior

    Nov 29, 2005
    836
    Garden City
    Full Name:
    RC33
    Any HANS device to recommend?
     
  6. wurlie

    wurlie Rookie

    Apr 24, 2011
    42
    To my knowledge they are all made under license, I personally use Stand21, although I have seen many drivers use Schroth.
    Best, w
     
  7. Savageulm

    Savageulm Formula Junior

    Nov 15, 2010
    356
    Italy/Europe
    I will try the car very soon on the same race track where I was used to go very often with my Gt3. Just to give you some numbers and simply looking at the fastest Speciale's acceleration and assuming similar performances during turns and braking between the two cars..I should be able to gain about 3,5 sec. from my best Gt3 lap time.
    so just to let you know :
    1':21",5 Gt3 my best on that race track (but some friends were able to be 1 sec faster with Rs)
    1':18" Speciale (my estimated lap time)
    1':12"/1':13" average time for Gt3 Cup lap times (just to compare some numbers)

    We will see and hope to meet you soon of course..
     
  8. freshmeat

    freshmeat F1 Veteran

    Aug 30, 2011
    7,284
    The oem 4-pt works fine w a HANS device.

    It feeds through the narrower opening just under the headrest which is the perfect width that matches the shoulder points of the HANS device.

    There's still a bit of submarining w the oem 4-pt but it's much better than the conventional seatbelt.

    I use a carbon pro HANS device by HANS :)
    http://www.saferacer.com/hans-device-hans-professional-device

    I went w conventional anchors because the quick release tethers can easily catch under the seatbelts which would release the anchors which kinda defeats the whole pt lol.

    Happy motoring!
     
  9. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,061
    socal
    I know 4pts is oem and schroth has a 4pt ASM but do a little research. 4pts are not allowed by many many sanctioning bodies for a reason. The dynamics of a 3pt are very different from 4+ points. Consider using 6pt parachute style to improve safety with minimal extra installation efforts.
     
  10. MuratC

    MuratC Formula Junior

    Jul 6, 2014
    539
    Istanbul, Turkey
    Well, according to the Schroth manual (above) oem 4-point harness is not suitable for HANS use
     
  11. freshmeat

    freshmeat F1 Veteran

    Aug 30, 2011
    7,284
    #11 freshmeat, Oct 9, 2014
    Last edited: Oct 9, 2014
    Well, if we want to be really technical here, a 4-pt is technically not suitable for full-fledged tracking/racing purposes as billybob has already pointed out. Spirited Ferrari Racing Day driving events no problemo.

    As I briefly touched on, w the 4-pt there will still be some submarining which technically poses significant risk in event of a crash. body lunges downward, the buckle clip is in a placement directly above vital organs etc etc.

    So, if you want to be technical and 100% homolgamated then no, a 4-pt and HANS used either together or mutually exclusive of each other are not suitable.
     
  12. VividRacing

    VividRacing F1 Rookie

    Aug 23, 2005
    2,986
    Gilbert, AZ
    The Belts have to be specific for a Hans Device as MuratC stated..

    Are oem harnesses able to be switched easily? If so then we can get Hans approved belts and Hans devices. Which I am a dealer for both =)
     
  13. wurlie

    wurlie Rookie

    Apr 24, 2011
    42
    #13 wurlie, Oct 9, 2014
    Last edited: Oct 9, 2014
    So, we have a new question, exactly as VividRacing posed :)

    Is it possible to replace the factory installed 4pt harness with an FIA certified harness compatible with a Hans device, using the existing attachment points for shoulder belts?

    And while we are at it, does the factory 4pt harness have inertia reels like standard 3pt belts?

    Many thanks everyone for chipping in!
    Best, w
     
  14. MuratC

    MuratC Formula Junior

    Jul 6, 2014
    539
    Istanbul, Turkey

    AFAIK, you cant replace the oem 4pt harness with a HANS compatible FIA certified harness. First there are no real anchoring points for none of the belts. You just have make them by drilling the body panels and reinforcing them. Second, you should probably get a real racing seat with holes for anti-submarining belts. Original 4pt harness anchoring points are too wide apart for HANS use. So you cant use these for a new HANS compatible belt.

    Or you can do it my way http://www.ferrarichat.com/forum/143429445-post24.html but it may not be FIA certified :)

    Also 4pt oem harness doesn't have inertia reels. Maybe that's why they are not allowed in the US
     
  15. wurlie

    wurlie Rookie

    Apr 24, 2011
    42
    Thanks Murat!
    Are then the firewall attachment points for the 4pt harness different to those in the 458 Challenge car?
    Can it be done in the factory to put the Challenge firewall into the Speciale?
    Best, w
     
  16. Savageulm

    Savageulm Formula Junior

    Nov 15, 2010
    356
    Italy/Europe
    Thank you to all you. Very very informative thread...I never used the Hans before and now I know much more about it..Tks
     
  17. Caeruleus11

    Caeruleus11 F1 World Champ
    Rossa Subscribed

    Jun 11, 2013
    11,631
    I think once you go down this road you find you will need a roll bar at least, if not a 1/2 cage or even a full cage...
     
  18. wurlie

    wurlie Rookie

    Apr 24, 2011
    42
    I would disagree - a street car has side impact beams in the doors, plus the airbag system to protect the driver. The safety concept in a race car that is based on a cage is quite different.
    All I want is to wear a Hans device when I have a helmet on with a harness without inertia reels :)
    And I want a harness for the track - but am not keen on a basal skull fracture.
    And helmets are required on most tracks.
    It seems to me that Ferrari's factory 4pt harness is a poorly engineered gimmick - a bit disappointing to be honest.
    I have asked if it is possible to have Challenge harness attachment points installed in a Speciale through extra campionario. Will report back.
    Best, W
     
  19. Caeruleus11

    Caeruleus11 F1 World Champ
    Rossa Subscribed

    Jun 11, 2013
    11,631
    Yes its very different. Street cars make many compromises because they are street cars. HANS keeps your head locked in place- if you roll your street car the roof can deform and now your head is exposed.

    I think theres a good reason why Ferrari in the USA doesn't offer this stuff....
     

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