Top Speed - Kawasaki Ninja 250R Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 09-22-2009, 04:16 PM Thread Starter
Junior Member
 
Join Date: Sep 2009
Location: el dorado, ar
Posts: 2
Top Speed

I can only go 75 mph on my 2008 250R. This is on a flat surface and no wind.
Max rpm is 9000. Runs good at 70

Anyone had this problem?
rrisher is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 09-22-2009, 06:04 PM
Senior Member
 
Join Date: Apr 2009
Location: Gloucester, Va, USA
Posts: 113
The fastest I can go on my 09 is right at 104(indicated). I reckon I could lose some weight(i'm at 180).
9000 at 75 seems right to me. I'm turning right at 8000 running 70 (indicated, actual experience shows that im actually at 64 mph) I can only squeeze out 104 when Im hugging the tank. When im sitting up, the best I can do is about 96.
Unless you are very heavy, I think you should be able to run faster. I would start with a basic tune-up. Plugs, carb sync, a/f mixture tune. How many miles are on the bike?
Kenny is offline  
post #3 of 11 (permalink) Old 09-23-2009, 06:05 AM Thread Starter
Junior Member
 
Join Date: Sep 2009
Location: el dorado, ar
Posts: 2
I weigh 250. The bike has 6,000 miles on it.
rrisher is offline  
Sponsored Links
Advertisement
 
post #4 of 11 (permalink) Old 09-23-2009, 07:24 AM
Senior Member
 
Join Date: Apr 2009
Location: Gloucester, Va, USA
Posts: 113
That may not be too far from the truth.
HP=(((MPH/234)^3) x weight)
18.10=(((75/234)^3) x 550)

That about makes sense.
That is assuming that you and the bike weight only 550. This formula also does not factor in aerodynamic drag.

You may just need a bigger bike?
Kenny is offline  
post #5 of 11 (permalink) Old 09-23-2009, 09:35 AM
Senior Member
 
edgary's Avatar
 
Join Date: Oct 2008
Location: Phoenix, AZ
Posts: 227
I've found I can run up to ~95 mph (indicated) on the highway, not sitting straight but not hugging the tank either. I weigh ~165, though, which, like Kenny said, is a factor on top speed.
edgary is offline  
post #6 of 11 (permalink) Old 09-25-2009, 02:34 AM
Junior Member
 
sexyNpink's Avatar
 
Join Date: Aug 2009
Location: Towson, MD
Posts: 4
I ride at 80/85 at about 10,000 rpm. I've gone faster, but this is usually my highway speed. But, I've def ran it a lot faster. I haven't had optimal chances bc every time I go out, there seems to be a lot of volume on the roads. And, I just got my bike last thursday.

Oh and I'm a girl too...so I weigh a lot less (we won't discuss weight here...it's a girl thing) lol
sexyNpink is offline  
post #7 of 11 (permalink) Old 09-26-2009, 11:49 AM
Senior Member
 
Join Date: Apr 2009
Location: Gloucester, Va, USA
Posts: 113
Quote:
Originally Posted by sexyNpink View Post
I ride at 80/85 at about 10,000 rpm. I've gone faster, but this is usually my highway speed. But, I've def ran it a lot faster. I haven't had optimal chances bc every time I go out, there seems to be a lot of volume on the roads. And, I just got my bike last thursday.

Oh and I'm a girl too...so I weigh a lot less (we won't discuss weight here...it's a girl thing) lol

We won't discuss weight here, but let me guess, your bike will run 140mph, won't it? lol
Kenny is offline  
post #8 of 11 (permalink) Old 09-28-2009, 10:42 PM
Senior Member
 
Malaqui's Avatar
 
Join Date: Jul 2008
Location: San Diego
Posts: 229
Send a message via AIM to Malaqui
I have ran the bike at 115ish. I weigh in at 130lbs and fully tucked with full throttle. I also have a double bubble wind screen which improves aerodynamics a little.

Go Go Kawasaki Go!
Malaqui is offline  
post #9 of 11 (permalink) Old 10-02-2009, 11:13 AM
Junior Member
 
CaMo_FroG's Avatar
 
Join Date: Sep 2008
Location: Montana
Posts: 22
Send a message via MSN to CaMo_FroG
"rrisher"... sounds like you need to just rev it up a tad bit more and drop a gear... get it close to the redline to get anything else....or you need a tune up

I am 195 lbs and i top out at about 105 mph (indicated) thats between 11-12k rpm in top gear....

you definitely need to "tuck-in" ... wind does make a difference...
head wind will slow me as much as 10 mph
same with sitting up will keep me about 5-10 mph slower

2008 Kawasaki Ninja 250R Black
CaMo_FroG is offline  
post #10 of 11 (permalink) Old 10-08-2009, 07:08 PM
Junior Member
 
Join Date: Oct 2009
Location: Some Desert, USA
Posts: 7
Quote:
Originally Posted by Malaqui View Post
I have ran the bike at 115ish. I weigh in at 130lbs and fully tucked with full throttle. I also have a double bubble wind screen which improves aerodynamics a little.
a double bubble on the 250r shouldn't drop the cd too much. the 250r already has a rather generous amount of protection. and easy way to lose a .01cd or two, would be to pop off the mirrors and get some flushmounts for the front. strapping the front end to drop it would also help a significant amount as reducing the frontal area is the best way to lower cd.

FULL TUCK FRIENDS!
RedEiko0713 is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Tags
speed, top

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Ninja 250R Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome