Optimal RPM

laughrey · July 10th, 2009, 03:12 PM

This may be an uninformed question but what is the best RPM for highway. I realize it should be below redline. I just read people talk about how the Ninja can handle highway speed but didn't know what a good cruising RPM was.

kkim · July 10th, 2009, 03:18 PM

That would depend entirely on the speed you need to travel.

Optimal for what?

laughrey · July 10th, 2009, 03:24 PM

If I travel for several hours nonstop between 60 and 70 mph what is the best RPM range? This is beginning to sound like a math problem

almost40 · July 10th, 2009, 03:31 PM

whatever revs your turning in 6th gear is perfect.

kkim · July 10th, 2009, 03:39 PM

I'd do it in 6th gear... that would make the rpm and vibration bearable and assure you'll arrive with your fillings intact.

6th for better fuel economy (and sanity), downshift to 5th if you need more power.

Ninjaboi57 · July 10th, 2009, 03:45 PM

75-80mph im hitting 8-9grand for 45mins and its almost unbearable vibration and whine. Backed down to 60-65 around 7-7500....

HKr1 · July 10th, 2009, 03:50 PM

Quote:

Originally Posted by Ninjaboi57

75-80mph im hitting 8-9grand for 45mins and its almost unbearable vibration and whine. Backed down to 60-65 around 7-7500....

Really??

Thought 9000rpm was 85 on ours (indicated), purrs like a kitten. Maybe it's just allot smoother than the R1, and I dont notice

kkim · July 10th, 2009, 04:33 PM

Quote:

Originally Posted by Ninjaboi57

75-80mph im hitting 8-9grand for 45mins and its almost unbearable vibration and whine. Backed down to 60-65 around 7-7500....

if you do a lot of that type of riding, regear the bike.

00v_Lucky · July 10th, 2009, 04:43 PM

Quote:

Originally Posted by kkim

if you do a lot of that type of riding, regear the bike.

what is the best type of riding for our bikes right now? track or city riding cruising at 45mph?

kkim · July 10th, 2009, 05:02 PM

like anything else, it's a compromise to appeal to the broadest buyer group. the gearing works well for almost everything, but isn't optimal for one's specific needs if it falls outside of Kawasaki's gearing choice. That's the beauty of modding the bike... to make it work even better for one's particular needs.

laughrey · July 10th, 2009, 06:22 PM

Quote:

Originally Posted by kkim

like anything else, it's a compromise to appeal to the broadest buyer group. the gearing works well for almost everything, but isn't optimal for one's specific needs if it falls outside of Kawasaki's gearing choice. That's the beauty of modding the bike... to make it work even better for one's particular needs.

And a good way to keep the money in circulation
Posted via Mobile Device

Anthony_marr · July 10th, 2009, 06:54 PM

Quote:

Originally Posted by Ninjaboi57

75-80mph im hitting 8-9grand for 45mins and its almost unbearable vibration and whine. Backed down to 60-65 around 7-7500....

The standard front sprocket has 14 teeth. Replace it with a 15-teeth one and you will lower the engine RPM by almost 7% at any given speed.

almost40 · July 10th, 2009, 07:26 PM

ahh.....to hell with it not gona post

ninjabrewer · July 10th, 2009, 08:11 PM

Quote:

Originally Posted by HKr1

Really??

Thought 9000rpm was 85 on ours (indicated), purrs like a kitten. Maybe it's just allot smoother than the R1, and I dont notice

That is about where mine rides, although at that speed I don't look at the speedo for anything longer than quick glances, and that is mostly to make sure no red lights are on. But I have learned to feel and listen to gauge my speed. If I hear the engine, I'm either between 70-75, or over 80, almost 85. Between those two speeds, the engine noise fades out and all I hear is wind. As far as vibration goes, at those speeds, not much, just the usual high freq vibe of the engine, spinning merrily along, looking forward to the beach.

nb

Ramen · July 10th, 2009, 08:14 PM

Quote:

Originally Posted by laughrey

If I travel for several hours nonstop between 60 and 70 mph what is the best RPM range? This is beginning to sound like a math problem

If you do 0 RPMs at that speed you will never need to refill the gas tank.

So I would try that.

Nickds7 · July 10th, 2009, 09:49 PM

Changing out the front sprocket is really cheap and easy to do as well.
http://www.ninjette.org/forums/showthread.php?t=10273

July 10th, 2009, 03:12 PM	#1
laughrey ninjette.org newbie Name: Zachary Location: Arizona Join Date: May 2009 Motorcycle(s): 2009 Ninja 250R Posts: 8	Optimal RPM This may be an uninformed question but what is the best RPM for highway. I realize it should be below redline. I just read people talk about how the Ninja can handle highway speed but didn't know what a good cruising RPM was.

July 10th, 2009, 03:31 PM	#4
almost40 ninjette.org Monkey Spank Name: Kevin Location: Illinois Join Date: Apr 2009 Motorcycle(s): 2008 250R Track-Bike Woodcraft clip-ons and rearsets FZ-6 track bike Posts: A lot.	whatever revs your turning in 6th gear is perfect. __________________________________________________ Black 250R Full Area P QC Dyno Jet Kit 100 main 41T Rear Sprocket

July 10th, 2009, 07:26 PM	#13
almost40 ninjette.org Monkey Spank Name: Kevin Location: Illinois Join Date: Apr 2009 Motorcycle(s): 2008 250R Track-Bike Woodcraft clip-ons and rearsets FZ-6 track bike Posts: A lot.	ahh.....to hell with it not gona post __________________________________________________ Black 250R Full Area P QC Dyno Jet Kit 100 main 41T Rear Sprocket

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July 10th, 2009, 03:18 PM	#2
kkim Join Date: Nov 2008 Posts: Too much.	That would depend entirely on the speed you need to travel. Optimal for what?

July 10th, 2009, 03:24 PM	#3
laughrey ninjette.org newbie Name: Zachary Location: Arizona Join Date: May 2009 Motorcycle(s): 2009 Ninja 250R Posts: 8	If I travel for several hours nonstop between 60 and 70 mph what is the best RPM range? This is beginning to sound like a math problem

July 10th, 2009, 03:39 PM	#5
kkim Join Date: Nov 2008 Posts: Too much.	I'd do it in 6th gear... that would make the rpm and vibration bearable and assure you'll arrive with your fillings intact. 6th for better fuel economy (and sanity), downshift to 5th if you need more power.

July 10th, 2009, 03:45 PM	#6
Ninjaboi57 ninjette.org member Name: Chanh Location: Kent,WA Join Date: Jun 2009 Motorcycle(s): 2008 Kawasaki Ninja 250R Posts: 29	75-80mph im hitting 8-9grand for 45mins and its almost unbearable vibration and whine. Backed down to 60-65 around 7-7500....

July 10th, 2009, 05:02 PM	#10
kkim Join Date: Nov 2008 Posts: Too much.	like anything else, it's a compromise to appeal to the broadest buyer group. the gearing works well for almost everything, but isn't optimal for one's specific needs if it falls outside of Kawasaki's gearing choice. That's the beauty of modding the bike... to make it work even better for one's particular needs.

July 10th, 2009, 09:49 PM	#16
Nickds7 ninjette.org guru Name: Nick Location: Sacramento, California. Join Date: Apr 2009 Motorcycle(s): 2009 Ninja 250r Posts: 379	Changing out the front sprocket is really cheap and easy to do as well. http://www.ninjette.org/forums/showthread.php?t=10273