Fiat-Abarth 695 Berlina SS Assetto Corse Competizione '68

Discussion in 'GT6 Tuning' started by eran0004, Apr 19, 2015.

  1. eran0004

    eran0004

    Messages:
    8,677
    Inspiration: https://www.bonhams.com/auctions/22528/lot/357/

    [​IMG]

    Background

    The info listed at Bonhams seems odd. Apparently this would be a 48 bhp Abarth 695 with a type 206 engine and a 5-speed gearbox giving it a top speed of 170 km/h.

    When cross-checking these specs with bernimotori.com, which is the best Abarth source I have found on the internet, I found that according to Abarth the 206 engine produces 38 bhp (@5350 rpm), and that the 695 SS AC had a 4-speed gearbox that gave a top speed of 140 km/h:

    695specs.jpg

    Of course, that's "just" for a normal 695 SS AC, while the car at Bonhams is noted as a Competizione model, so perhaps it had some modifications done to the engine, and a special gearbox that the standard AC didn't get? I decided to give Bonhams the benefit of doubt and model my replica by the following specs:

    Power: 48 BHP (Bonhams) @5300 rpm (Bernimotori)
    Transmission: 5-speed (Bonhams, Bernimotori, Autmomobile-catalog)
    Weight: 485 kg (Bernimotori)

    I didn't find a single gearbox configuration that would give a top speed of 170 km/h, but by using the ABA 1652 5-speed gearbox and replacing its 5th gear with the 4th gear from the '68 695 SS the top speed does become 170 km/h. Of course, you still only have 48 bhp, so to achieve 170 you need to drive downhill or in the slipstream behind another car. Top speed on a level road and no slipstream is roughly 150 km/h.

    Regarding the suspension and LSD settings, it's 100% guesswork and I picked settings that I think makes the car fun to drive. So you don't have to feel like you need to stick to my suspension settings. Use them if you like them, if not, feel free to adjust it :)

    The tune

    Power: 47 bhp @ 5300 rpm
    • Engine tuning: Stage 2
    • Sports computer
    • Semi-racing exhaust
    • Isometric exhaust manifold
    • Catalytic converter: Sports
    • Intake tuning
    Weight: 485 kg
    • Weight reduction: Stage 3
    • Carbon bonnet, body colour
    • Ballast: 7kg @ 50%
    Gearbox: Top speed 170 km/h
    • 1st: 3.250
    • 2nd: 2.067
    • 3rd: 1.526
    • 4th: 1.200
    • 5th: 0.875 (close ratio option: 1.000)
    • Final drive: 3.700 (close ratio option: 4.333)
    Update: Optional gear configuration for top speed
    1. Set final gear to 3.700

    2. Set max speed to 130 km/h

    3. Set the gear ratios.

    Suspension (front / rear)
    • Ride height: 105mm / 145mm
    • Spring rate: 1.12 kgf/mm / 2.20 kgf / mm
    • Dampers (Compression): 1 / 2
    • Dampers (Extension): 2 / 3
    • Anti-roll: 1 / 7
    • Camber: 1.5 / 0.5
    • Toe: -0.20 / -0.10

    LSD
    • Initial torque: 5
    • Acceleration sensitivity: 60
    • Braking sensitivity: 60
     
    Last edited: Jul 7, 2015
    gkgamer, philips99, nonka and 2 others like this.
  2. eran0004

    eran0004

    Messages:
    8,677
    Lap times
    sports hard / dirt / snow tyres

    Nordschleife | time: 10:31.252 | avg. speed: 118.8 km/h
    Circuito de la Sierra | 14:04.509 | 115.1 km/h
    Chamonix - Mini | 0:59.662 | 95.8 km/h
    London | 1:14.130 | 93.3 km/h
    Toscana - Reverse | 2:26.172 | 84.0 km/h
     
    gkgamer likes this.
  3. Sir Chadwick

    Sir Chadwick

    Messages:
    40
    hi buddy I found your tune but I'm having a problem with the transmission setting would be great if you reply thanks buddy:)
     
  4. Sir Chadwick

    Sir Chadwick

    Messages:
    40
    its ok buddy change my mind not gonna do it sorry for reply you abou it:)
     
  5. eran0004

    eran0004

    Messages:
    8,677
    Well, there might be other people having the same problem so I'll answer anyway:

    When setting the gearbox and you don't get the values you need, you have to adjust the top speed slider. The values you need for this gearbox can be obtained by:

    1. Set final gear to 3.700

    2. Set max speed to 130 km/h

    3. Set the gear ratios.
     
    John Wells likes this.
  6. eran0004

    eran0004

    Messages:
    8,677
    Here's an optional transmission setup for top speed:

    Gear 1: 2.538
    Gear 2: 1.474
    Gear 3: 1.000
    Gear 4: 0.741
    Gear 5: 0.621
    Final drive: 4.444

    With these settings, the car will do 165 km/h on level road, and 178+ km/h downhill.

    How to load the values:
    1. Set final drive to 3.500
    2. Set max speed to 240
     
    gkgamer likes this.