Why do F1 engineers prefer short stroke engines with big bores instead of vice versa or square?

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Petrolheart Garage

Because the rod to stroke ratio is higher, so there is less rotating mass, so you can have sky high redlines, because the crank and conrods won’t bend or flex.

09/13/2015 - 07:34 |
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Lorenzo Silvi

With short stroke an engine can reach high rpm easily, so it has a lot of hp but a little torque (like the N/A F1). I think that a F1 car doesn’t need big torque because it is very light, so, in modern turbo F1, where a big part of torque is generated by the turbo, is preferable a short stroke engine. This is my idea, but I can go wrong, hope that I help you

09/13/2015 - 07:37 |
4 | 0

Actually I read from some site, where a guy said that if you have identical engines with only difference being that one has long stroke and small bore, while the other has short stroke and big bore, then the power and torque curves would be pretty identical.The thing is that short stroke engine is a lot easier to tune for revving than long stroke one. But it can be set up for low-end torque as well. Although the long stroke engine would be more efficient at that.
If you want I can try finding that site for you

09/13/2015 - 09:40 |
0 | 0