Sitting around the campfire by the creek last night, me and my friend got into a good ol' arguement about screamers and thumpers. He claims that 2-strokes get off the line quicker. Unless I have been misled, I thought it was general knowledge that a 4-stroke will get off line quicker because the 2-stroke has to get some power wrapped up before it will really go. Can someone please help us settle this one?

 

torque isnt the only thing that helps you leave the line quicker, its also weight and chassis setup. therefore an arguement on engine type alone doesnt really warrant a black and white answer to which one is better i guess.

a 4 stroke can virtually completely seal the combustion chamber making it a little more effecient on the combustion but with a 2 stroke you're getting that bang ever trip the piston makes to the top.

from what ive seen in hill racing with a 370 2 stroke and a 470+ 4 stroke, the 2 stroke left the line faster, but the 4 stroke one to the top. mostly due to weight and riding ability.

 

when i raced a stock banshee (the kid weighing like half of me) i beat him off the line, but then he would pass me and just keep ona goin...........IMO more torque the quicker off the line, if u put up a 370 2 stroke and a 470 thumper against eachother in a race without either of them screaming before dumping the clutch the thumper would win

 

actually i bet they'd both bog out. these were drag bikes with agressive timing, porting and camming in the 4 strokes concern.

 

this is a very debatable topic. Each engine has its own advantages and disadvantages. True, 2-strokes dont have as much low end power, and True, 4-strokes dont have as much high-end and can't rev as high. 2-strokes dont have an oil pump that can run dry at certain angles, and 4-strokes burn cleaner.

HOWEVER, despite some differences, the setup of the machine is what makes the difference. It's all about gear ratios, manual vs. automatic clutches, and number of gears, machine weight, etc.

 

cant 2 strokes spin revs much quicker than 4 strokes. 4 strokes hook up better in dirt but if the race is on pavement then the 2 stroke would accelerate quicker.

 

put it this way... if both a 4 stroke and a 2 stock were at idle. then they both took off at the same time. the 4 stroke would win because 4 stokes have lots of low end power at lower RPMs. 2 stokes have almost no power at low RPMs. but take the same two and have them both reving at there peak RPM and then take off. the 2 stroke would win becasue it has more power then the 4 stroke does at higher RPM. simple as that.

 

My friend has got me sick of hearing the word "Banshee." He seems to think they'll beat about anything with a motor off the line.

 

i agree... im sick of hearing what people say about them...but then again. its basicly true. a 350cc twin 2 stroke is big big big power. but still... stock vs stock them 450s are keeping up with shees pretty good. id say in a couple more years. there will be another new class of super performance quads....a light weight 600cc class. this time. hopfully Honda will make one first. imagine that *drools* i cant wait.