Can someone explain F1 N.A. engines?

[VirginiaJenkins]

Hi,

So from what I know, F1 N.A. engines have for a long time been engines with short strokes, big bores, relatively low torque and RPM as high as possible.
So I know that for the same amount of torque, higher RPM equals higher power, and I guess shorter strokes work better at higher RPM, but apart from that I'd like to know why they did things like they did:
Pretty much no other racing series that I know of have engines like that, so why did they do things like that in F1?
What would be the downsides of an engine with longer strokes and narrower bores? Couldn't they achieve the same power with more torque and lower revs? (All of that with N.A. engines).

Please help.

I did not find the right solution from the internet.

Thanks


Moderator's note: I deleted the spam part of this message but left the bait because the question is interesting. Enjoy!

[MGBV8]

Larger bore allows better breathing (unshrouding valves, larger valves).

Longer stroke, piston travels farther, more friction.

http://www.carmag.co.za/technical-blog/longstroke-vs-shortstroke/

http://rehermorrison.com/tech-talk-53-big-bore-or-long-stroke-which-is-better/

[joe_padavano]

The more mass flow of air in and out of an engine, the more power you make, period. When displacement is fixed by rules, higher RPM means more airflow and thus more HP.

Of course, there are second order effects that can drive the specifics of a race engine design.  These days, packaging for aerodynamics is a big factor. Bore and stroke can be driven by fitting within a specific packaging shape and volume as much as anything else.