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Seeker

30-01-24 08:27 PM

Why is the 270° crank so popular?

... and why is it still the wrong angle?

https://www.youtube.com/watch?v=Qn9JrN1JERI

from Fortnine.

garynortheast

30-01-24 08:59 PM

Re: Why is the 270° crank so popular?

That is very interesting. Well explained too.

Sir Trev

01-02-24 06:28 PM

Re: Why is the 270° crank so popular?

I watched that one the other day - his blackboard explanations make so much sense, although some of his techie bits go slightly over my head...

The bit about twins having way less ring area for unburnt fuel to hide in making their stats much better than a four was very interesting.

Seeker

04-02-24 09:01 PM

Re: Why is the 270° crank so popular?

A more technical explanation on why Fortnine was wrong (or not totally correct). A 285° parallel twin does not have better balance than a 270°.

https://www.youtube.com/watch?v=w0PBlc1b0vo

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