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True Horsepower- an inside look at honest horsepower

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delusionised:
May 2005 Dirt Bike Magazine article "True Power-An Inside Look at the Real World of Honest Horsepower" Pg 84, shows a dyno graph comparing an 1994 KX500 VS. 2005 YZF450, wonderfull wonderfull graph, The stock KX peaked at 60hp! STOCK!  @ 7,000 rmp and the YZF a mere 49@ 8'500 rpm Ha, I love it, But tell me why the hell these 450's hang with us? I dont get it, Hmmm....Check this out though, under the dyno chart there is some text and it says, and I quote...

"Want a dose of reality? All the fanfare that the new four-strokes are getting shows that they still are not in the realm of true horspower compared to the 500 two-stroke. You wonder why ty davis' of the world love the KX500; Look no farther than this. They not only made monster power early in the powerband, they (the CR and KX were close) peaked out at at the 60- horsepower mark.


 Its like Danny LaPorte was saying," So lets see, after six years the big bore four-strokes are still heavier, slower and require higher mantenance than a decade-old design".  (500's)


Wish I could post the graph some how but I dont have the equipment. So everyone Kill the four-strokes!!! :twisted:

mikesmith:
The 4-stroke advantage is in tractable easy to ride power delivery (not as much skill as a big 2-stroke takes),2-stroke takes a skilled rider to go fast and not waste power or let the bike wear you out.4-strokes are here because of the EPA and manufacturers make more money in parts and dont forget the public "me to" mentality.

Arigato:
The best thing to do is.....Own both!! I have a 450 for the track and the 500 for sand or when someone needs a slice of Humble Pie.

GDubb:
Amen on the Humble Pie!  Friends wonder why i wont let them ride my bike,  and I'd rather they didnt find out why on my bike.  When I tell friends about how bad it is, I'm sure they all think I'm just talking out of my a** and I'm just stingy with my toys. Little do they know... I could be saving their life.

musturbo:
Peak hp has never meant much to me.  Kinda like a stereo amplifier rated at 1200watts when   useable power is only  100watts.  anything under 5,250 rpm is torque, and that is where most of my bikes live, so I have always  looked for the tq ratings and area under the tq curve on a dyno sheet.     Th kx5  amazed me at how much power this bike makes off idle.  If it didn't need to be cleared by blipping the throttle I would swear this was the nastiest 4 stroke i ever rode!

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