Powerbands.

Message

Shiv · #1 Unread post by **Shiv** » Mon Mar 06, 2006 7:17 am

There a website with the dynos of each model? I'm sure it varies from bike to bike but like, an average?

And a powerband would be the area where it raises quickly right? So if you had an even slope (say of x) that'd be a better beginner bike than a slope of say, 4x because there's less of a spike there, correct?

Just making sure I'm reading the charts right.

#2 Unread post by **ZooTech** » Mon Mar 06, 2006 8:42 am

Best place to check are motorcycle magazine websites and aftermarket exhaust websites. A beginner would want to look for a bike with a flat powerband so the engine doesn't "wake-up" at some point in the rev range and upset the chassis. Some bikes don't wake up at all until close to redline, like my old '84 NightHawk which didn't "come onto the cams" until >8000rpms (redline was at 9500), so that bike would actually suit a beginner nicely so long as they shifted under 8000rpm while they were learning.

Shiv · #3 Unread post by **Shiv** » Mon Mar 06, 2006 9:41 am

Cool. I figured it was something like that.

And to avoid making another topic:

Do fuel-injected bikes have carbureators? I wouldn't think so from my current knowledge of a carb (part of hte engine that creates the vaccuum to draw the gas into the cylinder) and if the fuel were being injected then it wouldn't need a vacuum.

But I could be wrong with my definition as well. I never had to do any maintenance on an engine so I'm short on all the terminology.

Mon Mar 06, 2006 9:51 am

Yeah, it's either fuel injected or carberated. However, I have seen carbs that have been bastardized to work as throttle bodies and injector mounts... but that's a different story... stupid engineering students.

#5 Unread post by **dr_bar** » Mon Mar 06, 2006 10:00 am

Shiv wrote:and if the fuel were being injected then it wouldn't need a vacuum.

Actually, you still get the vacuum because that's how the O2 gets into the cylinder. Also, if I'm correct, the injectors are usually into a throttle body and not directly into the cylinder on bikes.

BuzZz · #6 Unread post by **BuzZz** » Mon Mar 06, 2006 1:19 pm

ZooTech wrote:Best place to check are motorcycle magazine websites and aftermarket exhaust websites. A beginner would want to look for a bike with a flat powerband so the engine doesn't "wake-up" at some point in the rev range and upset the chassis. Some bikes don't wake up at all until close to redline, like my old '84 NightHawk which didn't "come onto the cams" until >8000rpms (redline was at 9500), so that bike would actually suit a beginner nicely so long as they shifted under 8000rpm while they were learning.

That's B.S., pure and simple.

THIS is a powerband. I am selling them on e-bay for $1450.00 each, will fit any bike ever made and guaranteed to increase your H.P. by a factor of at least 12.... 24 if you have a friend stretch it out with you.**

**Only works for the first launch from your driveway unless you pack it with you and set it up for each subsequent launch.

#7 Unread post by **ZooTech** » Mon Mar 06, 2006 1:21 pm

I have seen "throttle body injectors" made by Ford which were pretty much an attempt to use one fuel injector for all the cylinders by mounting one in a modified carburetor. The injector simply metered the fuel and acted as the main jet. But to answer your question accurately, no, fuel-injected engines do not have carbs. They do have throttle bodies and valves, though, but those are for metering air.

#8 Unread post by **ZooTech** » Mon Mar 06, 2006 1:22 pm

BuzZz wrote:
ZooTech wrote:Best place to check are motorcycle magazine websites and aftermarket exhaust websites. A beginner would want to look for a bike with a flat powerband so the engine doesn't "wake-up" at some point in the rev range and upset the chassis. Some bikes don't wake up at all until close to redline, like my old '84 NightHawk which didn't "come onto the cams" until >8000rpms (redline was at 9500), so that bike would actually suit a beginner nicely so long as they shifted under 8000rpm while they were learning.
That's B.S., pure and simple.

THIS is a powerband. I am selling them on e-bay for $1450.00 each, will fit any bike ever made and guaranteed to increase your H.P. by a factor of at least 12.... 24 if you have a friend stretch it out with you.**

**Only works for the first launch from your driveway unless you pack it with you and set it up for each subsequent launch.

I stand corrected!

BuzZz · #9 Unread post by **BuzZz** » Mon Mar 06, 2006 1:44 pm

Don't feel bad Zoo... most people are operating under the same mis-conception.

I'm doing my best to get the real story out there.....

And make a fistfull of ducats

Buy Yours NOW Before They're Gone!!!

sapaul · #10 Unread post by **sapaul** » Mon Mar 06, 2006 7:08 pm

After checking with BMW, they advised that I take two for the launching as the K1200S is so bloody heavy. Please may I have discount.