25 years of sportbike development

[Dave]

Originally Posted by TIGGER

Nope maximum sweetness!!!



Haha!

step through = scooter bro

[Amber Lamps]

Originally Posted by Dave

step through = scooter bro

Semantics... I'd rock a 200 mph scooter!

[Amber Lamps]

Originally Posted by smileyman

I pondered this alot while mowing last night. I do not think we have seen the end of the curve but I feel its coming. Big HP for the existing liters will have to come either from new tech' like D.I. 2 strokes, valve actuation, or metallurgy. Otherwise durability will suffer. You may have to replace valves rather than have tham adjusted at 25K?
The only other way to get there is adding CCs ala the new V Max. GSXR 1800 anyone?

Hmmm... I don't know. I still stand behind my original statement that Suzuki could produce a 200hp GSXR1000 if they wanted to. Today. I also believe that it would be reliable. I point to 10 years of Suzuki dominance in Superstock racing around the world. I do believe that we are losing our spot lately.... I also believe that we have had no small success in Endurance racing as well. I honestly don't believe that it's that "hard" to make the bike and have it be reliable. I believe that there are other considerations at work here, i.e. legal, environmental, image, tires, safety, etc. Shit, there are many groups right now who believe that the current bikes have way too much power and want to legislate a maximum performance limit.

[Mr Lefty]

not to mention if they blow their load on hp right now... it'll get harder to improve on... so they pace themselves... and give us little gains to keep us happy and away from other manufactures...

[Tmall]

I think the next big thing is going to be downforce incorporated into the body work.

They'll make it lighter to help accelerate, then have downforce to stick it to the ground.

[Antwanny]

Originally Posted by No Worries

Maybe they should graph how the midrange torque has decreased as the horsepower and rpm range has increased. I use midrange torque dozens of times a day. High rpm horsepower? Once a day if I'm lucky.

agreed but when you use the horsepower its too much fun

[smileyman]

Yeah 200 hp is doable with what they have now. I just dont think that is very high since WSBK is around that figure reliably now. But say GP levels at 1000cc, 240 hp in a warranty and EPA/dot package would run about as spensive as the Desmodici. Tigger is right can be done. Probably wont though...

[karl_1052]

Originally Posted by TIGGER

I'm not sure you're right there, NW. I'm sure that my bike has more torque than yours. Although I do agree that torque has hit a wall since my 1997 YZF1000 had about the same torque numbers as my 2006 GSXR1000 does. For some reason, and it may be on purpose,torque has hovered around 80 ft/lbs in the liter class. It may be that tires aren't good enough for much more than that... You have to remember that whenever the OEMs have produced an engine that was "better" than the corresponding brakes, suspension and tires pandemonium has followed!!!

Torque is a function of engine capacity and engine efficiency. The only way to increase torque is to increase engine size.

HP is a function of torque at a specific rpm. Raise the RPM capacity and the HP goes up, but torque will always be the same.

My bike makes 80lb-ft from about 3000 rpm to over 10000rpm, with a peak of just over 100lb-ft at around 8000rpm. All due to the long stroke motor with an additional 340cc over a liter.

[Dave]

Originally Posted by karl_1052

Torque is a function of engine capacity and engine efficiency. The only way to increase torque is to increase breathing capacity.

HP is a function of torque at a specific rpm. Raise the RPM capacity and the HP goes up, but torque will always be the same.

My bike makes 80lb-ft from about 3000 rpm to over 10000rpm, with a peak of just over 100lb-ft at around 8000rpm. All due to the long stroke motor with an additional 340cc over a liter.

fixed

[karl_1052]

Originally Posted by Dave

fixed

But with a given capacity, cylinder filling can only be so efficient, unless there is a giant leap forward in breathing technology. The only other way is a bigger cylinder.