Just to give some people a greater insight into 2 and 4 stroke engines I have a bit of interesting info and a good comparison of a 250 4stroke and a 125 2stroke:
Link:
http://www.deepscience.com/articles/engines.html
Here's a good comparison, note the horse-power ratings, torque ratings and the RPMs:
2005 CR125---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Significant changes to the air intake boot and a new 36mm Mikuni TM-x carburetor and new cylinder porting give the engine a boost in performance to improve mid-range and over-rev power delivery. Combined with
significant weight reductions achieved on the frame, rear brakes and hub design, the power to weight ratio gives the CR125R capacity to deliver dynamic bursts of power to ensure its place at the top of its class.
Refined rider comfort and ergonomics are matched to the new frame design enhancing maneuverability and control giving a high-flying ride reflecting its works lineage and championship-dominating heritage.
* Engine Type Liquid-cooled 2-stroke single
* Engine Displacement 124.8cm3
* Bore & Stroke 54 x 54.8mm
* Compression Ratio 8.7 : 1
* Carburation 36mm Mikuni TMX flat slide (TMX01B)
> * Max. Power Output 41 bhp at 11,500 rpm
> * Max. Torque 27Nm at 11,000 rpm
* Ignition Digital electronic with 3-D mapping and electronic advance
* Starter Primary kick
2005 CRF250R------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
A small bike that everybody can enjoy. Sure to become one of the mostpopular dirt bikes on the planet, the lightweight and easy-riding CRF250R provides just theright combination of performance and handling for long days of riding fun.
* Engine Type Liquid-cooled 4-stroke 4-valve SOHC single
* Engine Displacement 249.4cc
* Bore & Stroke 78 x 52.2mm
* Compression Ratio 12.9 : 1
* Carburation 37mm Keihin FCR flat slide carburettor with throttle position
> * Max. Power Output 42 bhp at 11,000 rpm
> * Max. Torque 28.5Nm at 8,000 rpm
* Ignition Computer-controlled digital capacitor discharge with electronic advance
* Starter Primary kick
well i think its funny how u
well i think its funny how u all say that a 125 2 stroke has more power than a 250 4 stroke. look at a dyno. if someone wants a dyno ill post a link. they are tied on peak hp. also all u 2 strokers that are like 4's are for pussys who cant handle a power band. well lookin at a dyno the 4 stroke has full power throughout the entire rpm range not just a little tap of power like a 2. and i know some of u like to play the weight card so lets look at that. the brand new yz125 weighs wat 196lbs? my 04 rmz250 weighs in at 203lbs. hmm 7lbs diff. thats about the weight dif between a sx125 and a yz125. and look it the stats post by felix. the cr125 is rated at 41bhp and the crf250r comes in at 42bhp. now i love a good 2 stroke too, if u kno how to ride u can almost always beat a 4. but if yur not excessively good with your 2 stroke then yull get the pants kicked off of u in a race. personally i like 4's because they dont have a power band instead they always have power. and i like suzuki. for those of you who dont like suzuki check out the 2007 250 class shootouts, almost everyone prefered the rmz250. wat the hell does it matter though? if u got yurself a bike and it goes real fast then all is good.
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people
Impossible is nothing
okay then
ok so if everyone was jumping off of a mountain would you then