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NHRA / IHRA rules for Plaid/Plaid+

Discussion in 'Model S: Driving Dynamics' started by 1.21GW, Jan 31, 2021.

  1. 1.21GW

    1.21GW Member

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    I’m greatly looking forward to seeing the Plaid and Plaid+ vehicles tearing up the drag strip. However, given their performance, it is getting into uncharted territory for the NHRA and IHRA rule books for stock vehicles running low 9s or high 8s 1/4. If you recall, the Dodge Demon test vehicle got kicked out of the track for running 9.65 sec and Dodge used it as advertising.

    Main question: will these vehicles need roll cages, competition licenses, Parachutes, chassis certification etc..?

    IHRA rules: 2019 IHRA Rulebook
    6F566248-C15B-49B6-AA0A-037561AB3BAD.jpeg

    NHRA rule book: Shared Publication

    EXAMPLE: Why Dodge Demon can’t run at the drag strip: Here's Why You Can't Take Your Dodge Demon To The Drag Strip
     
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  2. dhanson865

    dhanson865 Active Member

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    Looks like the rules will have to be modified.

    * Fire system (required on engine, should have new wording for electric vehicles)
    * Flexplate and shield (looks to be shielding should the transmission explode, exception for electric vehicles needed?)
    * Floor (floor must be steel on the drivers side? Shouldn't titanium be allowed? Surely tesla underbody shield is sufficient.)
    * harmonic balancer (exception for electric vehicles needed?)
    * transmission shield (not sure why this is listed separately from flexplate and shield but same comments apply)
     
  3. Uncle Paul

    Uncle Paul Well-Known Member

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    Experienced this type of thing when Dodge Vipers began to dip into the low 12's-High 11's

    Initially they asked drivers to go home when they dipped into restricted times. Later they allowed us to run if our cars were "100% Factory Stock". This meant stock tires, shocks, 3 point safety belts, no short shifters etc. Had to run a factory top etc.

    Imagine they will need to write some new rules for these even faster EV's.

    Might require some initial safety and training for those new to drag racing or take prior track experience into consideration.

    Imagine no passengers allowed, Helmet, Jacket, Gloves for drivers.
    Probably institute a training proceedure for track owners and EV fire suppression equipment plus extraction instruction for the safety crews.

    Remember, drag strips often treat their launch areas with sticky VHT treatments. Will add stress to your drive lines and wheels. These factory speeds are are going to be new for the tracks and it might take some time for them to sort it all out.

    Lots of current rules like bell housings, transmission shields, engine blankets etc will not be applicable to EVs. With more experience will come more rules changes.
     
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  4. tstolze

    tstolze Member

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    I think the toughest rule will be the roll cage, I use to run into this in my 87 Buick GN, I would run it in the low 12's, then the last run of the day I would crank the boost/fuel up and run well into the 11's. When I picked up my time ticket I would let them know I was done for the day, they would always chuckle and say good, because you can't run again today. :)
     
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  5. bhzmark

    bhzmark Active Member

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    Aside from the car issues, you might also need a fire jacket.

    upload_2021-1-31_23-1-29.png
     
  6. FlatSix911

    FlatSix911 Porsche 918 Hybrid

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    Trust me you don't want just a fire jacket... you need a full Nomex SFI 3.2A / 5 rated suit. :cool:
     
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  7. 1.21GW

    1.21GW Member

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    I'm looking forward to having a parachute!

    Although, i am wondering if the cold gas thrusters planned for the roadster could be used to slow the car down in place of parachutes... hmm
     
  8. ThomasD

    ThomasD Member

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    Since a cage is required. Wouldn't you have to drop the battery pack and plate the floor where the supports go for the cage
     
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  9. BigNick

    BigNick Disaffected Member

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    External cage, a la Mad Max!
     
  10. 1.21GW

    1.21GW Member

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    Lol, that could be a great solution for the Cybertruck. I can only imagine what people at the drag strip would be thinking while watching the cybertruck run 9s with an external cage. (or a Model S for that matter..)
     
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  11. Nav20

    Nav20 New Member

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    Just like Uncle Paul mentioned about the Vipers in the 12’s We went down this rabbit hole with the GTR’s when they first came out and we were running tens stock before they updated the regulations. It came down to how each track wanted to handle it. I found showing up with a helmet and jacket then being respectful with the staff usually worked and allowed us to run.

    The reality is the track insurance doesn’t cover anything outside the rules so you are asking them to assume the risk if anything happens. If they feel you are not someone they can trust they are much more likely to turn you away. Most of them want to see you race but not if you’re a liability.

    The rules will catch up with time.
     
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