This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Yamaha to Get Pneumatic Valves

<div class='quotetop'>QUOTE (roger-m @ Jul 9 2007, 11:22 AM) <{POST_SNAPBACK}><div class='quotemain'>ah i see what you mean. still sound daft to me to have 2 cylinders fire at the same time then a massive part of the cycle being non productive,

the only advantage i can think of over a big twin this big bang would have is valve surface area.
That's one advantage, the other is rpm. Smaller bore and smaller stroke, allow for both higher valve surface area, and higher rpm, the latter the most important one.
<div class='quotetop'>QUOTE <div class='quotemain'>surly the engines woulds not last long with 2 explosions happening at the same time and there would also be a lot of strain on the cams and cam chain because of the amount of valve being opened at the same time.
True anf that's why it's not happening in WSB, but in motoGp only. Here they can design cranks, chains and gears that can take the strain and they can afford a rebuld after every race.
 

Recent Discussions