kx100 horsepower?


23 replies to this topic
  • kawikx100

Posted July 17, 2010 - 12:14 PM

#1

hello does anyone know how much horsepower a stock kx100 has?

thanks,:smirk:

  • fender bender 59

Posted July 17, 2010 - 01:20 PM

#2

About 22 to 25 I belive!!!!!

  • Refresh

Posted July 17, 2010 - 01:44 PM

#3

20.1 at the wheel lol

  • kawikx100

Posted July 17, 2010 - 02:19 PM

#4

thanks!

  • Chokey

Posted July 17, 2010 - 05:30 PM

#5

The KX100 makes around 26 rwhp.

  • dmm698

Posted July 18, 2010 - 07:44 PM

#6

well witht he bore and stroke probably making it around a 99.8 cc, there is probably 99.8 horsepower because everybody knows that one cc is one horsepower. I suppose 25ish sounds about right when a 125 makes around 31ish.

  • baby arm holding apple

Posted July 18, 2010 - 07:49 PM

#7

Standard calculation of a modern 2t motor is 0.2 hp per cc.
The standard for the 4t is 0.12

20 HP just as a rule of thumb.

You would need a 166 4t to be of equal.

This calculation is paraphrased from a article
by the designer of the "Yamaha" engine.

  • SAPPERS

Posted July 18, 2010 - 08:25 PM

#8

As chokey said, about 26 or so. I have a friend that had an Eric Gorr built 107 for his son. They dynoed just for the hell of it, 37hp. It was wicked.

  • kawikx100

Posted July 19, 2010 - 02:21 PM

#9

holy shit 37hp thats dirty

  • minimotos95

Posted July 19, 2010 - 11:09 PM

#10

37... whp or bhp?

  • Jimbob2705

Posted July 20, 2010 - 12:25 AM

#11

37... whp or bhp?


What's the difference?

Thanks,

James

  • minimotos95

Posted July 20, 2010 - 12:49 AM

#12

What's the difference?

Thanks,

James

about 10-25%

  • ChompersNZ

Posted July 20, 2010 - 12:57 AM

#13

What's the difference?

Thanks,

James


Where its measured, at the rear wheel or at the output shaft I think he is talking. Bike dyno's normally measure it at the wheel, there maybe a machine to measure it at the output?

Paul

  • Chokey

Posted July 20, 2010 - 05:22 PM

#14

What's the difference?

Thanks,

James

WHP (or RWHP) is the horsepower as measured at the rear wheel. BHP (Brake Horsepower) is measured at the crank. Factory horsepower ratings are taken at the crank. Most dynos that aftermarket companies use read at the rear wheel, and this is generally considered more useful, as it's the true power that is being put to the ground.

about 10-25%

Typical drive-line losses are about 12%. If you have 25% loss something is seriously wrong.

  • minimotos95

Posted July 21, 2010 - 04:40 AM

#15

chokey, i couldn't find any percentages for bikes so i guessed. and suposedly automatic AWD cars have a around 25% :smirk: i don't believe that though


but damm, 37 out of a 100(107) is crazy thats like riding a 170lb 144 with tiny wheels, i couldn't keep the front end down on a regular 100......

  • matt4x4

Posted July 21, 2010 - 05:11 AM

#16

i couldn't keep the front end down......


Why is that the statement everyone uses to describe the awesome power on a mini....any adult on a mini will find that the front wheel is hard to keep down -
an indication of power....not so much....

an indication that your A$$ and center of gravity is way to far back because the ergonomics are not designed for someone of your size....more so....

  • SAPPERS

Posted July 21, 2010 - 06:14 AM

#17

and suposedly automatic AWD cars have a around 25% :smirk: i don't believe that though


but damm, 37 out of a 100(107) is crazy thats like riding a 170lb 144 with tiny wheels, i couldn't keep the front end down on a regular 100......


An auto AWD car will lose much more than 25%. Typical rear drive automatics lose 20-25% of hp going to rear wheels. Stick shift about 15%. The only way to improve on an auto is to have a purpose built tranny that has custom valve body, better clutch packs, etc. But even on a dyno, you seem to lose more hp because you run a stall converter. But your e.t.'s drop drastically.

As for the 100 I was referring to, I was just reminded that it did have a phathead flat top piston & head set up running 118 octane mixed at 50:1.
So yea, it ripped.

  • asg5265

Posted July 21, 2010 - 09:00 AM

#18

A 65 makes 18.5 at the crank, so a 100 probably makew 21 22, but I hear its extremely tame and you will need a pipe to wake it up.

  • mcrdude897

Posted July 21, 2010 - 04:09 PM

#19

My Manufacturer's Statement of Origin from Kawasaki reads 29.2 horsepower. I'm not saying that it's correct but to put it into perspective, a KX125 with only 25 more CC's is in the low to mid 30's. It's also 50 lbs heavier :smirk:

  • asg5265

Posted July 21, 2010 - 07:57 PM

#20

its not HP, its the rider, pointless to figure it out.





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