Fortnine - CO2 & Helmets

[Easy-X]

https://youtu.be/x_ej8sehs8k

tl;dr sitting at the lights traps CO₂ in your helmet to the point of mental impairment after several minutes. Opening the visor does not help, removing the "chin curtain" does

I have two helmets, a nice retro helmet for the summer with no chin curtain. Nice! I'm safe. Winter I have a cheap Vcan with a chin curtain to keep out the cold. Oh dear! Hang on, there's a vent on the front/chin of the helmet and a sizeable one at that...

https://cdn.jsac.media/products/55135/vcan-v128-helmet-hollow-matt-black-no-size-152135-02.jpg?width=568

Surely that would have an impact?
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[gbrand42]

Is this actually a thing? Or something dreamed up for content
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Yamaha RD50M, Honda C90, Yamaha RS100, Yamaha RD125LC, Honda XL125 V9 Varadero, Honda NT700VA, Honda VFR800X, Honda CRF1000L, Honda ST1300 Pan European

[doggone]

Cars don't have 'CO2 filters' and spend more time at lights.

[Nobby the Bastard]

I wounder how the Stig manages, wearing a full face helmet in a car....
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Freddyfruitba...]

[Kawasaki Jimbo]

Health Canada (and other countries) set a long-term CO2 limit of 1000ppm (0.1%) so his example of 6 minutes at 1370ppm won’t be significant.

[Nobby the Bastard]

It's like the people who insisted they couldn't breathe with a thin cloth mask on....
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Jmoan]

[rpsmith79]

Yeah but, filtering (sorry, lane splitting) in not legal in Canada, so they probably spend way more time sat stationary in traffic than we do
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Current Bike: Honda CG125 ES4 // Honda CB600FS Hornet // Triumph Street Triple R

[doggone]

If there's any issue with raised CO2 it will be from their own rebreathing though. It's just another half-baked story from the anti car lobby.

[Ayrton]

The Harvard study he's citing is based on indoor air quality in an office, so somewhere your sat for 7 hours a day not a couple of minutes in busy traffic.
I like fortnines videos but he seems to stretch the truth sometimes. Maybe he should do some actual cognitive tests to prove it has an impact.

[Easy-X]

[Bhud]

I like to open my visor sometimes, just to smell a bit of exhaust fumes mixed with the smell of wet grass after it's been raining. Is there any better smell? Anyway, when I breathe in CO2 my usual tactic is to exhale it a moment later.

[MCN]

CO2 levels in blood cause respiratory activity.
When level get high enough we breathe in 2 lumps of fresh air.
CO2 in motorbike helmets has been studied.
The study has also been heavily criticised as being a shit study.

Carbon Monoxide poisoning or other vehicle exhaust gad compounds are probably more harmful than any 'build up' of respiratory CO2 in a helmet.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.