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Horsepower figures (Street bikes only please)

  • Thread starter Thread starter sharpy
  • Start date Start date
I ran mine on the dyno to make sure the carbs were set up spot on. It was very beneficial as the air/fuel ratio analyser showed I was running rich which was causing the hesitation I had noticed on the road.
Other than that Saaz you're right. :)
 
Thanks Guys, not sure I really understand fully but I will bug my mechanic about it more when I go out there.
 
Re: HP Stories

Re: HP Stories

sharpy said:
Please don't rave on about this and that, just state # of valves , state of tune and hp figures please thanks
Click to expand...
dont rave on? what are you a party pooper? you have to rave on about all the work in the bike because it all adds to the performance figures you will get.
 
Hoomgar wrote:
Thanks Guys, not sure I really understand fully but I will bug my mechanic about it more when I go out there.
Click to expand...

the dyno is called a brake, it simulates as if the bike were driving, the brake just gives resistance to better estimate horsepower. if you had the rear wheel off the ground and somehow could measure horsepower still, the figures might be considerably different, because the engine needs a load to perform with maximum efficiency.

I'm pretty sure thats how it goes...if not, then at least it looks good in writing :)
Ian
 
The latest "Motor Cyclist" has an article on a 250MPH Hayabusa with something like 400+ horsepower. AND it is still street ridable.

Harrison
 
Yes they are amasing to say the least. We have dyno runs of Busa's with minimal mods on them (under 11g) that dyno'd at over 280 hp

They are a truely incredible machine and a tribute to Jap bike engineering in the late part of last centary.
 
'78 GS1000 2v, 1085cc, welded crank, HD cylinder studs, HD clutch backing plate, lockup plate, 18# boost and 188 RWHP. Stock head, cams, valves, transmission, clutch, etc. Very streetable, except for the wheelies. Street chassis (+3" swingarm)= 6.90s @ 106mph in 1/8. Drag chassis (=6" swingarm, slick, wheelie bars, lightened)= 5.70s @ 126mph in 1/8. And improving each day out. Oh yeah, rider dresses out at 275# as well. Would really run with a normal sized fella on it.
 
massakins said:
'78 GS1000 2v, 1085cc, welded crank, HD cylinder studs, HD clutch backing plate, lockup plate, 18# boost and 188 RWHP. Stock head, cams, valves, transmission, clutch, etc. Very streetable, except for the wheelies. Street chassis (+3" swingarm)= 6.90s @ 106mph in 1/8. Drag chassis (=6" swingarm, slick, wheelie bars, lightened)= 5.70s @ 126mph in 1/8. And improving each day out. Oh yeah, rider dresses out at 275# as well. Would really run with a normal sized fella on it.
Click to expand...

That's very close to what I am going to have when I am done with mine this year. At least the top end and welded crank anyway.
 
BHP or Brake Horse Power, is rear wheel horse torque as measured on a water braked dyno, these were the original dyno's and surprisingly enough they incorporated a water brake to simulate loads and worked out your torque graph from how much braking force was required.
Remembering of cause that there is no way of measuring horsepower, Horsepower is always a calculated figure, basically torque times revs equals horsepower. which is hw modern bikes are producing more power, more revs.
Dink
BTW I have no idea what sort of HP my Kat has, but it is way quicker than my stock 1150.
 
Larry do you still have the 81 gs1100e if so do you have any pics and engine specs. I have been wanting to boost performance on my 81 gs 1100e for the last couple of years haven't desided how radical I want to go.....

Any info would help.
 
250mph is 400km/h. That is mind blowing! Only major Ontario roads allow you to go 100km/h. Just think about that, cutting comuting times down to a quarter...we got to get some MC only roads around here! :twisted:
 
The most HP from a street hayabusa that I have seen without a turbo and no NOS is around 240. I built one that dynoed 219 and was not all that reliable. The valves are the haybusa weak point. I`ve got a mild cbx in the garage that made 114 a few years back....man its sounds like it has 300 with that 6 cylinder howl. I haven`t ever took the time to dyno any of my street GS`s.
 
cbxchris said:
The most HP from a street hayabusa that I have seen without a turbo and no NOS is around 240. I built one that dynoed 219 and was not all that reliable. The valves are the haybusa weak point. I`ve got a mild cbx in the garage that made 114 a few years back....man its sounds like it has 300 with that 6 cylinder howl. I haven`t ever took the time to dyno any of my street GS`s.
Click to expand...
one of the guys i used to race with had one that ran low tens and that sound was so unique and awsome. I could listen to one of those all day
 
1428 4v
230 RWHP all muscle, 150hp+ spray
it is a streetbike (kinda)
 
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