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Board: Porsche - 911 - 991 - GT2/GT3 Language: English Region: Worldwide - Europe - Germany Share/Save/Bookmark Close

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    Jun 26, 2015 1:50:16 PM

    Alibaba
    Junior
    Alibaba
    Loc: Germany , Germany
    Posts: 85, Gallery
    Registered on: Aug 24, 2005

    991 gt3 Ramp Breakover Angle with liftsystem

    Does anyone know the 991 gt3 Ramp Breakover Angle with liftsystem (without it is 5,1*)

    Jun 26, 2015 6:22:19 PM

    DaveGordon
    Rennteam Pro
    DaveGordon
    Loc: Zürich , Switzerland
    Posts: 2774, Gallery
    Registered on: Aug 20, 2007
    Reply to: Alibaba

    Re: 991 gt3 Ramp Breakover Angle with liftsystem

    I don't know for sure, but the GT3 is 30mm lower than the normal 991, and the lift gives it 30mm at the front axle.  All other things being equal, I think that means it should be approximately half way between the GT3 and Carrera figures?  


    --

    2011 987S, 1964 Type 1

    Jun 27, 2015 9:07:07 AM

    Alibaba
    Junior
    Alibaba
    Loc: Germany , Germany
    Posts: 85, Gallery
    Registered on: Aug 24, 2005
    Reply to: DaveGordon

    Re: 991 gt3 Ramp Breakover Angle with liftsystem

    Hi Dave,

    I going to build a underground garage for my house, I have to give date of the Ramp Breakover Angle to my architect

    Jun 27, 2015 9:44:25 AM

    DaveGordon
    Rennteam Pro
    DaveGordon
    Loc: Zürich , Switzerland
    Posts: 2774, Gallery
    Registered on: Aug 20, 2007
    Reply to: Alibaba

    Re: 991 gt3 Ramp Breakover Angle with liftsystem

    Figured that was the case. I tried to find the approach angle with lift operative as well but couldn't find it anywhere.


    --

    2015 911 GT3, 2011 987S, 1964 Type 1

    Jun 27, 2015 12:00:39 PM

    GnilM
    Rennteam Moderator
    Gnil
    Loc: VD, Switzerland , Switzerland
    Posts: 14186, Gallery
    Registered on: Mar 11, 2005
    Reply to: DaveGordon

    Re: 991 gt3 Ramp Breakover Angle with liftsystem

    This may help ? 

    But it is without the lift system :

           
           
     
           
           
           
           
           
           

    Ground clearance

    (Measurement point for ground clearance)

    93 mm (3.66 in) (Centre of front axle,
    front underbody panelling)

     

     

    Approach angle (front/rear)

    5.8° / 13.6°

     

    Ramp breakover angle

    5.1°

    		   
           
           
           
           
           

    --

     997.2 C2 ,  -20mm  I 964 Carrera 4 I 991 GT3 RS on order delivery early Sept .

    Jun 27, 2015 12:56:01 PM

    fritz
    Rennteam VIP
    fritz
    Loc: BaWü , Germany
    Posts: 10248, Gallery
    Registered on: Jul 23, 2003
    Reply to: Alibaba

    Re: 991 gt3 Ramp Breakover Angle with liftsystem

    Alibaba:

    Hi Dave,

    I going to build a underground garage for my house, I have to give date of the Ramp Breakover Angle to my architect

    Your architect needs to work from the breakover angle without the lift system anyway, to be on the safer side.
    The relevant angles are measured with the cars static, and make no allowance for additional tyre and spring compression due to shock loads when going over ramps, etc..
    The lift system is designed to raise the front lip, as it is usually the most critical point. It raises the floor at the centre of the wheelbase by less than half the amount that the front lip is raised


    --

    fritz

     
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