On motorcycles I have notice that twin cylinder bikes have more bottom and midrange grunt than a 4 clyinder of the same size which needs higher rpm to stay in there higher powerband.Would the same thing apply to a single vs a twin?
The new Kawaski 650 twin for example,would it of been better to have a 650 single in it for utility use?I know the Grizzly has a big paint can in it's motor but it came from a old tech dirtbike from years back that they just slapped in there.If it had a new higher tech 650cc 4 valve liguid cooled motor instead would it be better than a twin for a utility quad?

 

Twin vs Single ain't the whole story, Tim1!

Too many variables (won't go into 'em here, but they are numerous) enter the equation; considering only twin vs. single oversimplifies the situation.

Otherwise, if you think a single might be superior to a twin, why not have single-cylinder automobiles and trucks? Consider, a 5.0 liter Mustang single (o.k., given your previous argument, with, say, about 48 valves); a 4.0 liter Jeep single, and so on.

Diogenes

 

i think that the larger a engine is ( 600cc and up) it should be a twin. a twin make power at 360degrees of rotation where a single is 720 degrees of rotation. a twin also could be much smoother because each cylinder can offset the other cylinder. where a single requires lots of counterweights.

later
jon

 

It just that most large 650 4 stroke open class dirt bikes seem to use a big single instead.Example, XR650 ,DR650 and so on.

 

Possibly the reason big singles have been used in off road bike`s is weight. 15 to 20 pounds on a quads not too bad but on a bike it`s a lot.

A twin in a utility quad will be nice. We`ll see if the manufacturers can get it into something sporty.

I like 4 strokes but with a v twin you get a power stroke on every 2nd stroke vs every 4th one. As close to a 2 stroke as you can get from a 4 stroke. LOL

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