RPM's and Speed - Kawasaki Ninja 250R Forum
 
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post #1 of 4 (permalink) Old 07-01-2013, 11:51 AM Thread Starter
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Question RPM's and Speed

What is average speed to RPM ratio? I'm brand new to riding and have only taken the bike out on the street 3 times, but looking to see what I should be looking for in each gear. Everyone keeps saying to listen to the engine, but if one has never dealt with a manual transmission before it is difficult to listen and understand it without guidelines. I realize it is not an end-all, be-all scenario where you must change, but just looking for a few guidelines so I can understand when best to change gears and how to not screw up my bike (2009).
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post #2 of 4 (permalink) Old 07-01-2013, 11:56 AM
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To be safe you would rather be a little high on the rpms. Unless your cranking the engine cold and redlining it you won't hurt it. When people say the 250 loves 11,000 rpm its true. When i ride my wifes i keep atleast 7k. When your going through the gears change gears around 7-10 grand. With a twofiddy when in doubt, tach it out!! Lol
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post #3 of 4 (permalink) Old 07-02-2013, 01:32 PM
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Quote:
Originally Posted by grasshopper View Post
....What is average speed to RPM ratio?
....what I should be looking for in each gear
..... just looking for a few guidelines so I can understand when best to change gears
The stock bike has 14/45 gearing (14 tooth front & 45 tooth rear sprockets).
With this set up rpms run kind of high and you will run thru the gears pretty quick, especially in 1st & 2nd. Normal shifting with conservative riding (i.e. around town, with traffic light) should be done between 6-7k rpms, sometimes even lower around 5.5k. When needing to obtain max speed quicker (i.e. entering the freeway) shifts between 8 and 11k are normal.

View the attachment to see what your actual speed (not indicated, it will be higher) will look like based on stock gearing. You can also experiment with different sprocket combos using Gearing Commander
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File Type: jpg gearing commander.jpg (71.9 KB, 16 views)
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post #4 of 4 (permalink) Old 07-03-2013, 02:19 PM Thread Starter
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Thanks! Your replies are very helpful in giving me a general idea of what to look for and when to shift
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