Short Stroke Motor
Elite HDF Member
Joined: Sep 2007
Posts: 4,541
Likes: 1
From: Nuevo México, Los Estados Unidos de América
I agree with most of what you said, Torque and HP are directly related. I was just trying to state, that all other things being equal, a bike with high torque numbers will typicly out accelerate (for a short distance i.e. 1/4 mile) a bike with higher HP numbers and low torque numbers.
BTW 71rwhp
BTW 71rwhp
I don't think you can say that's typically true though... anything that's fast that has high tq numers also has high hp numbers... a v-rod makes 85ftilbs matched with 125 hp... an 1125 makes 90 ftilb and 140 hp...
Anything with a higher torque number than hp, means it falls flat after 5252 rpm... and thus does not create torque up top, and so will not accelerate quickly...
I don't know what you would use as your "typical" example... most HD wouldn't even beat a 600 to the 60" mark...
Road Master
Joined: Oct 2007
Posts: 786
Likes: 1
From: Sheridan, AR
You clearly know more about the "science" of this subject than I do, and with science I will not argue,.............but the fact remains,....I have yet to be beaten by a 600cc bike 0-60 and I've raced so many of them, honestly I've lost count of how many.
I realize on paper and / or in the hands of a professional rider these bikes may be faster 0-60, but they are so hard to launch correctly that I have yet to be beat.
One day I will be beat, but how many people had to lose and go home in shame, before I had to lose one time.
I realize on paper and / or in the hands of a professional rider these bikes may be faster 0-60, but they are so hard to launch correctly that I have yet to be beat.
One day I will be beat, but how many people had to lose and go home in shame, before I had to lose one time.
Last edited by 1Coastie; Oct 30, 2008 at 11:56 AM.
Road Captain
Joined: Jan 2006
Posts: 566
Likes: 3
From:
I agree with most of what you said, Torque and HP are directly related. I was just trying to state, that all other things being equal, a bike with high torque numbers will typicly out accelerate (for a short distance i.e. 1/4 mile) a bike with higher HP numbers and low torque numbers.
BTW 71rwhp
BTW 71rwhp
I looked, but I couldn't find a suitable example from the bike world, so here's a car example. The cars have the same body style and weight and they are tested in the same issue of Auto Motor and Sport. One has a HUGE torque advantage (133 lb-ft) over the other, whereas the other has a 20hp advantage. BMW 335d (Diesel)
286 hp
428 lb-ft
0 - 80 km/h 4,4 s
0 - 100 km/h 6,3 s
0 - 120 km/h 8,3 s
0 - 130 km/h 9,6 s
0 - 140 km/h 11,1 s
0 - 160 km/h 14,2 s
0 - 180 km/h 18,5 s
BMW 335i (Petrol)
306 hp
295 lb-ft
0 - 80 km/h 4,0 s
0 - 100 km/h 5,7 s
0 - 120 km/h 7,7 s
0 - 130 km/h 8,8 s
0 - 140 km/h 10,0 s
0 - 160 km/h 13,0 s
0 - 180 km/h 16,4 s
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