difference between single and Vtwin?

[locogato11283]

u should get laid man

talkin to me?

[fastrthnu]

Not going to shoot holes through all of that novel above but I will throw a few things at you. 2- stroke diesel.... cylinder phasing.... Port timing..... 2-strokes are far from gruntless. Also, compare the power made per liter from a good chain saw or weed whacker. Rather impressive number without an expansion chamber.

 

 

Once you add more than one cylinder, One of the most critical things that determines an engines power curve is cylinder phase. Notice how all OEMs have their own flavor for firing order as well. Those variables have a large affect on how power is made and when. inline, 40*, 50* 90* 180* V twins, common crank pin, dual crank pin, they all make power differently.

 

Also, more than one cylinder does not mean less revs/cylinder. Everything still sees the same speed. The larger benefit of multiple cylinders is reduction of reciprocal mass thus increasing safe rpm potential.

 

 

Just a few thoughts I guess

 

Brandon

 

yes thats a correction to me on the speed per cylinder. Then again, why are we bringing up 2 stroke diesel, and v degrees? why not try and answer he oringinal question. Im trying to stick to the yfz motor in comparison to another same cc 2 stroke. Where all these other things are coming from I have no clue. Weed eaters work, a 2 stroke made to run without a pipe will work with no pipe at all. I could stop the crank of a weed eater with my hand with a glove on. Im tring to stick to the original question, and the yfz motor isnt any 80 90 degree v motor, its inline. a single is a single. Whats the compression of a typical weedeater? does a banshee have the same port timing as a weedeater? I didnt say 2 strokes wherent strong. They typically make more hp than a 4 stroke per cc, but at higher rpms. 2 stroke motors dont have a broad powerband and I mean 2 stroke gasoline not deisel. A motor that would go into an atv chassis. IS the firing order going to change between a single? or an inline twin? here the firing order 1,1,1,1,1,1,1,1,1. 1,2,1,2,1,2,1,2,1,2,1,2. what other variable is there? fuck it I dont even care anymore.

[blowit]

IS the firing order going to change between a single? or an inline twin? here the firing order 1,1,1,1,1,1,1,1,1. 1,2,1,2,1,2,1,2,1,2,1,2. what other variable is there?

 

 

 

Did not mean to ruffle your feathers there. I would agree that even I have skewed from the original question but I think it was about V twins for some reason which has little relevance to a Banshee engine, I agree.

 

Firing "order" obviously would not be applicable to a single or twin, but cylinder "phasing" is VERY important. By simply changing the Banshee from a 180* phased engine to a 90* phased engine, we will affectively change the way the power is delivered and completely change the power curve.

 

 

The diesel was just an example of a 2-stroke design engine making good torque at low rpms. they absolutely can do it but must be tuned for it. Remember the first generation Polaris ATVs? Very low rpm, stump pullers, in an ATV! A YFZ will not be pulling too many stumps. I would even be so bold as to say there really are no draw backs from a 2-stroke in terms of power. It really just comes down to efficiency and emissions. If those two items are addressed, a modern 2-stroke can come back with an attitude.

 

 

 

Brandon