Car weights!!

Discussion in 'Track Prep & Tech' started by I V - mk1 16v, Jan 22, 2006.

  1. Notso Swift Forum Member

    Joined:
    Jan 14, 2015
    Likes Received:
    65
    I think that is weak too high, there is not much real weight in the glasshouse, most of it is in the rails, motor, rear beam
    As an educated guess/rule of thumb, US front engined RWD V8's use the the centre of the cam shaft (in the Vee)
    So using that and considering we have allloy heads maybe the mid point of the motor, you would think it would be OKwithin 25 mm or so
     
  2. mk2mro New Member

    Joined:
    Mar 28, 2017
    Likes Received:
    1
    The middle door swage is about 675mm from the floor on my car, does this sound more reasonable?
     
  3. mk2mro New Member

    Joined:
    Mar 28, 2017
    Likes Received:
    1
    I'm looking at structurally optimising a Mk2 Golf control arm, and as part of this require the torque at the ball joint.

    I am basing my CoG at 675mm from the floor*, and the centre of the ball joint is 175mm from the floor.

    As I saw you have mentioned earlier in this thread, T = F x D. With that in mind...my total weight of the car is 11359N and when braking, this force is trying to effectively turn around the ball joint.

    To calculate this:

    T = 11359 x (0.675 - 0.175) = 5679.2/2 = 2839.75Nm


    I am having trouble with my model when analysing the control arm using this torque figure - The stresses are massive and there is no way the part would be suitable, this is even before optimising.


    My question is, does anyone know roughly where the CoG of a Mk2 Golf is? I have based the weight distribution front/rear as 64/36 as I can reference this from a book I found.

    I understand how the CoG can be calculated but do not have time for this.

    Any help would be massively appreciated.


    *The CoG I have used of 675mm from the floor is around the main swage line in the door.

    Cheers
     
  4. Notso Swift Forum Member

    Joined:
    Jan 14, 2015
    Likes Received:
    65
    Still sounds very high to me
     
  5. jon23 New Member

    Joined:
    Sep 24, 2007
    Likes Received:
    2
    Location:
    Herts/beds
    [​IMG]


    Fully stripped including wheel well delete
    Half cage
    Perspex Windows all round
    Fibreglass front wings
    Rear arches cut and replaced with fibreglass
    lightweight wheel's 5kg each
    Rear valance cut out as well

    815kg without driver and half tank of fuel
     
    Last edited: Jun 1, 2017
    pascal77uk likes this.
  6. knarfmk1 Forum Member

    Joined:
    Oct 10, 2008
    Likes Received:
    31
    Location:
    Holland
    [​IMG]

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    Fully stripped
    Wheel well delete
    Plastic fuel cell
    Full cage
    Lexan windows all round
    Fibreglass front wings, bonnet, tailgate & bumpers
    Lightweight Force racing wheels 3,5kg each
    Rear valance cut out
    No underseal
    1 seat & harness

    ARC/AFH hybrid engine 1600 16V

    711kg with 25L of fuel and no driver
     
    Muuu, 12valver, ces and 2 others like this.
  7. pascal77uk Paid Member Paid Member

    Joined:
    Jul 12, 2006
    Likes Received:
    568
    Location:
    Chelt
    42A47C95-007C-4CEC-BFDD-1DCC48C13ED7.jpeg

    8F4C4EF6-B2B9-40CC-AFC6-2E30A45F7A56.jpeg

    A458A298-3D9C-4ECE-B6BF-C2A0B47BD427.jpeg

    Golf Mk1
    16v ITBs
    020 Box
    Extensive Full cage
    All steel panels
    No Fuel
    795kgs
     
    12valver and knarfmk1 like this.
  8. Muuu New Member

    Joined:
    Feb 17, 2014
    Likes Received:
    4

    I was more apologist to invest in an ABF 16v, but what a project !! congratulations!
    I like all the details, that support gearbox even in total weight reduction .. eeheh
     
    knarfmk1 likes this.
  9. daNpy Forum Member

    Joined:
    Apr 4, 2022
    Likes Received:
    213
    Location:
    NL
    1986 Golf 2 GTI 16v
    9A engine with ITBs
    Removed seat mountings, also rear seat bench. Lightweight battery in the rear. Lexan windows rear + rear sides.
    Full cage, fire extinguisher.
    Full tank: 989 kg. But it's already a few kg's lighter due to a smaller alternator and mountings.

    IMG_4698s.jpg IMG_4781s.jpg IMG_4782s.jpg IMG_4784s.jpg
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice