RSS Hybrid 2018 S1 Guidelines

Car available here: RAC3 SIM STUDIO Safety Car: AC F1 Safety car (1126 downloads)  

FtF/Formula Trout physics: RSS Hybrid 2018 S1 Physics (804 downloads) Extra skins here: Race Department  

1 Tyres

1.1 Ideal running pressures: 26 psi, all tyres/compounds.

1.2 Ideal running temperatures – within 10 degrees of:

  • 90 – Hypersofts
  • 95 – Ultrasofts
  • 100 – Supersofts
  • 105 – Softs
  • 110 – Mediums
  • 115 – Hards
  • 120 – Superhards


ACRL DRS App (1510 downloads) The ACRL DRS app will be used to catch anyone who uses it when over a second behind the guy in front. The best way to use this app is simply to always wait for the BEEP & react quickly to the “angry” BEEPs you get when using DRS illegally. Make sure you have the correct drs.ini installed for each track.

4 ERS Guide 

4.1 MGU-K Deployment Modes ***UPDATED 31/03/19 **

Revamped completely so that mode 1 is lowest ERS usage, mode 5 is highest:-

  • 0. Charging – Only used to save charge before a qualifying hotlap.
  • 1. Economy – lowest ERS usage for high top speed tracks where you are on the throttle more.
  • 2. Low – suited to high speed tracks or to replenish MGU-K on lower speed tracks.
  • 3. Medium – Somewhere in the middle.
  • 4. High – used on tracks with lots of corners and fewer long straights.
  • 5. Party Time – your quali mode (on all but the longest tracks) and equivalent to the Kunos “Hotlap” mode. Highest energy output from MGU-K.

Qualifying – use the highest mode that does not empty the lap allowance, On most tracks this is “5 – Party Time”, but at Spa it will probably even be as low as mode 1 – Economy.


  • Hi speed tracks – Economy mode will see you good on any high speed track, switch to other modes for short stints or use KERS to supplement power.
  • Medium speed tracks – Use 3. medium or a mix, it’s your choice now.
  • Low speed tracks – Party Time if you can get away with it, otherwise modes 3 & 4 should be OK.

Note that none of the modes are compromised at high speed any more, the higher modes (3,4,5) just come into play more-and-more at lower speeds. Because of this, creating a differential in discharge rates between the modes was the biggest challenge, but I think I got there in the end.

4.2 MGU-K Recovery (Levels 0 – 10) Low levels give more stability under braking, but most people can cope in this car with the higher levels 8-10. You will need 10 at an “ERS thirsty” track like Silverstone.

4.3 Engine Braking (Levels 0 – 13) This is a matter of preference. High values give you slightly better fuel consumption but make the rear less stable, low values are easier to manage but mean you are more likely to run through a corner as you release the brake pedal.

4.4 MGU-H Battery/Motor Mode ***UPDATED 31/03/19 ** Basically, this has been removed (like they are planning to do in 2021) as it creates a fundamental, non-moddable glitch with the KERS button and with all modes when they are deploying charge at more than 70% capacity. The extra power has been put back into the engine – so KERS is good-to-go again. So… motor/battery give the same ERS levels now – ie: NOTHING.

5. Changelog (physics):-

  • All compounds from 2018 season now available. Gaps in performance are even. Temps balanced front-back & running slightly cooler.
  • All grip curves regenerated as Trout League are convinced that Supers were glitched.
  • All compounds run best at 26 psi when hot. Tyre walls are softer to compensate for higher psi. Tyre blankets 90 degs not 80 degs.
  • Camber settings allowed from 0 now.
  • Handling is more balanced, more accessible. Brakes much more forgiving.
  • Top-end power is down, but mid-range is up (reduced turbo-lag). This car is a lot quicker than original.
  • DRS works properly & de-activates above 4G lateral force automatically.
  • Fuel heavier (car slightly lighter) – emphasises difference between full/empty tank in a more realistic manner.
  • Diffuser height is raised to stop it bottoming out in high-speed corners which caused random spin-outs.
  • Underside colliders lowered as it was clearing sausage kerbs completely before.
  • Tyre change/repair times sped up & fuelling slowed down for league purposes.
  • ERS system – total revamp