I've always wondered, if you can squeeze more power out of a two stroke engine then why don't more purpose-built racecars use them? I get why road cars don't as they pollute significantly more, but who gives a shit when the only purpose in a race is to go fast?
You dont need to burn lubricant in a two-stroke, though.
because the intake charge must displace the exhaust gas within the same stroke
to do this most effectively requires heavy exploitation of swirl
that in turn requires lower piston speeds and especially shaped piston heads
it is unclear to me if having double the power strokes per revolution is enough to offset this
The big issue is that because of the fuel which is lost in the scavenging phase of of the 2 stroke cycle, they typically have issues with fuel efficiency. Since pit strategy is such a huge part of racing, and being able to avoid a singe pit stop can win a race 2 strokes aren't really viable for racing anymore. In the past they used to dominate the motoGP scene. And for fun I'll leave this right here.