Ninja 250 won't go over 100mph

pmason718 · March 19th, 2012, 04:16 PM

I'm asking this question for a friend of mine who has the new body style 250. Is the bike govern so that it won't go over 100mph?

Cab305 · March 19th, 2012, 04:17 PM

Yes, it's governed by the laws of physics.

It's 30hp what exactly are you expecting?

pmason718 · March 19th, 2012, 04:19 PM

Quote:

Originally Posted by Cab305

Yes, it's governed by the laws of physics.

It's 30hp what exactly are you expecting?

I'm not expecting anything b/c I don't own it I'm just asking for a friend of mine. They state that the old body style would go over 100mph but for some reason this one won't so I figured I would ask.

Cab305 · March 19th, 2012, 04:22 PM

lol sorry couldn't help myself. No there is no limiter. If you do the exhaust and jet the carbs you can just get it to crack the ton.

And even then, if the speedo says 100.... you are actually closer to 95.

I've done 98mph at Palm Beach International in 6th gear at 12000rpm, thats with a gps timer.
Last weekend with 45°-50° weather, she was really purring, I think I got her into the 105 range.

Not sure if the older one is faster. They have smaller wheels so I don't know how that works out.

jason_hann53 · March 19th, 2012, 04:33 PM

ive had mine doin like 175 which is around 110MPH. the wind out here helps out though haha!

gfloyd2002 · March 19th, 2012, 04:36 PM

You've clearly never dropped a ninjette from an airplane. As fast as a supersport there.

jason_hann53 · March 19th, 2012, 04:41 PM

Quote:

Originally Posted by gfloyd2002

You've clearly never dropped a ninjette from an airplane. As fast as a supersport there.

jeez i thought everyone had by now

Trailerboy531 · March 19th, 2012, 04:42 PM

I've got mine to indicate 110mph. Is your buddy a sumo wrestler as well?

CZroe · March 19th, 2012, 04:48 PM

110 indicated on mine. I hear the older model was lighter and made slightly more HP.

gophurr · March 19th, 2012, 05:06 PM

Your buddy must not be trying hard enough.

flynjay · March 19th, 2012, 05:07 PM

I believe pre-gens have a slightly higher compression ratio. That would account for the increased midrange and lower top end power.

choneofakind · March 19th, 2012, 05:08 PM

Quote:

Originally Posted by Cab305

Not sure if the older one is faster. They have smaller wheels so I don't know how that works out.

CZroe and I did the math in another thread somewhere. The wheels are within a few 100th's of an inch in diameter when you consider the diameter of the tires. Same final gearing even.

Quote:

Originally Posted by CZroe

110 indicated on mine. I hear the older model was lighter and made slightly more HP.

it's like 1 hp, and that's only in stock form.

Once you start making equivalent intake/exhaust mods, the new-gen seems to make more power... not to mention, that's all before changing the timing on the newgen so that it's similar timing to the pregen.

They're the same speed pretty much

bluesinorbit · March 19th, 2012, 05:14 PM

Tell your buddy he needs to make the bike go "yut ughhhh", bro.

Link to original page on YouTube.

CZroe · March 19th, 2012, 05:29 PM

Quote:

Originally Posted by choneofakind

CZroe and I did the math in another thread somewhere. The wheels are within a few 100th's of an inch in diameter when you consider the diameter of the tires. Same final gearing even.

it's like 1 hp, and that's only in stock form.

Once you start making equivalent intake/exhaust mods, the new-gen seems to make more power... not to mention, that's all before changing the timing on the newgen so that it's similar timing to the pregen.

They're the same speed pretty much

Well, I did say "slightly."

bluepoof · March 19th, 2012, 05:36 PM

If you put flame decals on, you can probably get an extra 2 or 3 mph on the top end.

choneofakind · March 19th, 2012, 05:42 PM

Quote:

Originally Posted by bluepoof

If you put flame decals on, you can probably get an extra 2 or 3 mph on the top end.

OHOHOH don't forget the 250R vinyls. Those red R's are worth an extra 10 hp!

Green paint makes it faster as well.

DUH! think of the simple things first

Reswob · March 19th, 2012, 08:05 PM

Rev limited top speed on stock gearing is just under 110mph, so in theory your friend can reach that speed with a long enough straightaway. If the bike made 200hp it still would only go 110mph on stock gear ratios and tire sizes, it would just get there a hell of a lot faster.

blink · March 19th, 2012, 08:07 PM

Quote:

Originally Posted by jason_hann53

ive had mine doin like 175 which is around 110MPH. the wind out here helps out though haha!

I couldn't get mine over 160 i believe, only weighed 130 at the time

Kevin2109 · March 20th, 2012, 09:13 AM

I could get mine to 106mph GPSed, stock was 103mph. yay for spending a grand on performance for 3mph. Now I can do it in second or third gear

g21-30 · March 20th, 2012, 09:21 AM

Quote:

Originally Posted by Reswob

Rev limited top speed on stock gearing is just under 110mph, so in theory your friend can reach that speed with a long enough straightaway. If the bike made 200hp it still would only go 110mph on stock gear ratios and tire sizes, it would just get there a hell of a lot faster.

Haven't measured mine; however, since it's NOT rev limited (early model CDI), it might surprise me.

choneofakind · March 20th, 2012, 03:12 PM

Quote:

Originally Posted by Kevin2109

I could get mine to 106mph GPSed

This summer, I'll likely get a set of RAM parts to mount my family's spare GPS to my bike and install a 12V socket to charge it. I want accurate speedo!!!

sombo · March 20th, 2012, 05:29 PM

Quote:

Originally Posted by flynjay

I believe pre-gens have a slightly higher compression ratio. That would account for the increased mid-range and lower top end power.

You have it backwards a little. The pre-gens DO have a higher compression ratio; 12.4:1 vs 11.6:1. However, that gives the pre-gen slightly less mid-range and better top end. Pre-gen: 28.05 bhp (20.92 kW) @ 12500 rpm and 13.15 ft·lb (17.83 N·m) @ 9,000 rpm tested at rear wheel. New-gen: 26.4 hp @ 11,000 rpm (rear wheel) and 13.6 ft·lb (18.4 N·m) @ 9,750 rpm.

alex.s · March 20th, 2012, 05:52 PM

my 250 has 70 hp, i donno what you guys are smoking.

...cr250.

Reswob · March 20th, 2012, 08:01 PM

Quote:

Originally Posted by g21-30

Haven't measured mine; however, since it's NOT rev limited (early model CDI), it might surprise me.

So, you're planning to blow the engine up in a quest to break 110? Good luck with that.

Jiggles · March 20th, 2012, 08:20 PM

Your friend is just being a pussy, tell him to go full throttle, these things easily hit 250mph

flynjay · March 20th, 2012, 08:48 PM

Quote:

Originally Posted by sombo

You have it backwards a little. The pre-gens DO have a higher compression ratio; 12.4:1 vs 11.6:1. However, that gives the pre-gen slightly less mid-range and better top end. Pre-gen: 28.05 bhp (20.92 kW) @ 12500 rpm and 13.15 ft·lb (17.83 N·m) @ 9,000 rpm tested at rear wheel. New-gen: 26.4 hp @ 11,000 rpm (rear wheel) and 13.6 ft·lb (18.4 N·m) @ 9,750 rpm.

That is what I meant. The pre-gen has a higher compression ratio which is why the current gen has more mid-range and less on the top.

choneofakind · March 20th, 2012, 09:19 PM

Quote:

Originally Posted by Reswob

So, you're planning to blow the engine up in a quest to break 110? Good luck with that.

The valvetrain is good to more than 15,000 rpm easily (according to Sportisi), the reason Kawasaki lowered the rev limiter is because when held at 15,000 rpm (where the rev limiter was on pre-1995 bikes) for long periods of time, there were issues with oil delivery. So they stepped it down to 14,500 after '95, and down to 14,000 [citation needed] in 2003 or something like that. Unless he holds it at 15k for an hour, he'll be fine.

sombo · March 20th, 2012, 10:30 PM

Quote:

Originally Posted by flynjay

That is what I meant. The pre-gen has a higher compression ratio which is why the current gen has more mid-range and less on the top.

I thought so, but with how you worded it I wasn't sure.

road_rascal · March 21st, 2012, 04:35 AM

Quote:

Originally Posted by choneofakind

The valvetrain is good to more than 15,000 rpm easily (according to Sportisi), the reason Kawasaki lowered the rev limiter is because when held at 15,000 rpm (where the rev limiter was on pre-1995 bikes) for long periods of time, there were issues with fuel delivery. So they stepped it down to 14,500 after '95, and down to 14,000 [citation needed] in 2003 or something like that. Unless he holds it at 15k for an hour, he'll be fine.

I thought Kawi lowered the redline due to lubrication issues.

March 21st, 2012, 06:50 AM

Quote:

Originally Posted by Reswob

Rev limited top speed on stock gearing is just under 110mph, so in theory your friend can reach that speed with a long enough straightaway. If the bike made 200hp it still would only go 110mph on stock gear ratios and tire sizes, it would just get there a hell of a lot faster.

You're right about the 2nd part, wrong about the 1st. The bike can't reach rev limited top speed on stock gearing, no matter how long a straightaway you have, because it simply doesn't make enough power to overcome aerodynamic drag. The point at which power produced=power required is just under 100 mph in stock form. If you are really small and do some streamlining tricks, you might crack the ton without any tuning mods.

choneofakind · March 21st, 2012, 07:47 AM

Quote:

Originally Posted by road_rascal

I thought Kawi lowered the redline due to lubrication issues.

whoops!! did I say fuel? I meant oil.

Half asleep when I posted that...

robmilchling · March 21st, 2012, 09:54 AM

Quote:

Originally Posted by gfloyd2002

You've clearly never dropped a ninjette from an airplane. As fast as a supersport there.

Actually, I would place money on the 250's terminal velocity being close to that of its top speed unless you managed to drop it and keep it going perfectly straight towards the ground, the drag would likely cause it to tumble through the air, so the 250 is still slower

LoneRonin · April 5th, 2012, 05:41 PM

Quote:

Originally Posted by elkster88

You're right about the 2nd part, wrong about the 1st. The bike can't reach rev limited top speed on stock gearing, no matter how long a straightaway you have, because it simply doesn't make enough power to overcome aerodynamic drag. The point at which power produced=power required is just under 100 mph in stock form. If you are really small and do some streamlining tricks, you might crack the ton without any tuning mods.

I got a GPS speed of 162km/h or 100.6mp/h catching up to an R6 and wasn't in full tuck. If I was and held it a little longer I'm sure I would have got a bit more out of it. Its a stock 09 with shimmed needles and snorkle removed, I'm 5'11 165-170lbs geared up.

caps · April 5th, 2012, 07:26 PM

Quote:

Originally Posted by Trailerboy531

I've got mine to indicate 110mph. Is your buddy a sumo wrestler as well?

^this

and a 15t sprocket should take care of your friends need for speed.

March 19th, 2012, 04:16 PM	#1
pmason718 ninjette.org member Name: Prince Location: New York Join Date: Aug 2011 Motorcycle(s): ZX10R Posts: 47	Ninja 250 won't go over 100mph I'm asking this question for a friend of mine who has the new body style 250. Is the bike govern so that it won't go over 100mph?

March 19th, 2012, 04:36 PM	#6
gfloyd2002 User Title Free Since '12 Name: Floyd Location: Barbados Join Date: Dec 2010 Motorcycle(s): '10 Ninja 250R Special Edition Green Posts: A lot. Blog Entries: 13 MOTM - Feb '12	You've clearly never dropped a ninjette from an airplane. As fast as a supersport there. __________________________________________________ "Improvement makes straight roads, but the crooked roads without improvement, are roads of genius." — William Blake

March 19th, 2012, 05:36 PM	#15
bluepoof ninjette.org sage Name: Carolyn Location: San Carlos, CA Join Date: Nov 2010 Motorcycle(s): 2007 Ninja 250, 2002 Yamaha XT225 Posts: 597	If you put flame decals on, you can probably get an extra 2 or 3 mph on the top end. __________________________________________________ www.bluepoof.com

March 19th, 2012, 08:05 PM	#17
Reswob ninjette.org sage Name: Josh Location: Richmond VA Join Date: Oct 2009 Motorcycle(s): 2008 Triumph Bonneville Black Posts: 627	Rev limited top speed on stock gearing is just under 110mph, so in theory your friend can reach that speed with a long enough straightaway. If the bike made 200hp it still would only go 110mph on stock gear ratios and tire sizes, it would just get there a hell of a lot faster. __________________________________________________ '08 Bonneville Black sold->'08 Ninja 250R \| OES Swingarm Spools \| EBC HH brake pads \| reflector delete \| no-cut brake light modulator \| DIY fender eliminator

March 20th, 2012, 09:13 AM	#19
Kevin2109 KThanksBye Name: Kevin Location: Orange County Join Date: Mar 2011 Motorcycle(s): 2006 zx636r Posts: A lot.	I could get mine to 106mph GPSed, stock was 103mph. yay for spending a grand on performance for 3mph. Now I can do it in second or third gear __________________________________________________ ----> My Youtube! <---- Unregistered, watch my youtube page!

March 19th, 2012, 04:17 PM	#2
Cab305 ninjette.org sage Name: Cab Location: Miami Beach Join Date: Mar 2010 Motorcycle(s): Blue 10 250r Posts: 697	Yes, it's governed by the laws of physics. It's 30hp what exactly are you expecting?

March 19th, 2012, 04:22 PM	#4
Cab305 ninjette.org sage Name: Cab Location: Miami Beach Join Date: Mar 2010 Motorcycle(s): Blue 10 250r Posts: 697	lol sorry couldn't help myself. No there is no limiter. If you do the exhaust and jet the carbs you can just get it to crack the ton. And even then, if the speedo says 100.... you are actually closer to 95. I've done 98mph at Palm Beach International in 6th gear at 12000rpm, thats with a gps timer. Last weekend with 45°-50° weather, she was really purring, I think I got her into the 105 range. Not sure if the older one is faster. They have smaller wheels so I don't know how that works out.

March 19th, 2012, 04:33 PM	#5
jason_hann53 ninjette.org member Name: Jason Location: Sask, Canada Join Date: Sep 2010 Motorcycle(s): 2010 Ninja 250r Posts: 28	ive had mine doin like 175 which is around 110MPH. the wind out here helps out though haha!

March 19th, 2012, 04:42 PM	#8
Trailerboy531 Gear crash test dummy Name: Max Location: South Bay (So. Cal) Join Date: May 2011 Motorcycle(s): 2010 Ninja 250 race bike, 2014 ZX-636r Posts: A lot.	I've got mine to indicate 110mph. Is your buddy a sumo wrestler as well?

March 19th, 2012, 04:48 PM	#9
CZroe CPT Falcon Name: J.Emmett Turner Location: Newnan, GA Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.	110 indicated on mine. I hear the older model was lighter and made slightly more HP.

March 19th, 2012, 05:06 PM	#10
gophurr ninjette.org member Name: Kevin Location: Chicago Join Date: Apr 2010 Motorcycle(s): 2009 Ninja 250r SE, 2007 Daytona 675 Posts: 95	Your buddy must not be trying hard enough.

March 19th, 2012, 05:07 PM	#11
flynjay ninjette.org guru Name: Jason Location: Houston, TX Join Date: Nov 2011 Motorcycle(s): 2007 Ninja 250 (sold), '06 Ninja 650R Posts: 455	I believe pre-gens have a slightly higher compression ratio. That would account for the increased midrange and lower top end power.

March 19th, 2012, 05:14 PM	#13
bluesinorbit ninjette.org member Name: Joon Location: Orange County, CA Join Date: Feb 2011 Motorcycle(s): 2011 Ninja 250R Posts: 164	Tell your buddy he needs to make the bike go "yut ughhhh", bro. Link to original page on YouTube.

March 20th, 2012, 05:52 PM	#23
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	my 250 has 70 hp, i donno what you guys are smoking. ...cr250. __________________________________________________

March 20th, 2012, 08:20 PM	#25
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	Your friend is just being a pussy, tell him to go full throttle, these things easily hit 250mph __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

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