Fluttering noise coming from front of bike.

blades8306 · April 14th, 2013, 01:26 PM

Hello, ninjette community.

A couple of weeks ago I started noticing a noise coming from the front of the bike, a noise that sounds similar to a flag quickly flapping in the wind. My 2011 250r has almost 25,000 miles and I can hear the noise between 3-5 thousand RPMs. I'm not sure if the sound goes away after 5,000 or I simply can't hear it over the engine anymore. I'm thinking it's the valves but I'm not 100% sure. I haven't have a valve adjustment in a while so that would lend credence to that theory. I haven't had a problem with how the bike runs, though. If anyone has had a similar problem please let me know.

Motofool · April 14th, 2013, 02:31 PM

So, it is not related to the speed of the bike?

Can you reproduce it even when not rolling, just by reving up?

blades8306 · April 14th, 2013, 02:56 PM

It's not based on speed or load. I can choke the bike between there and hear it and rev the bike myself to hear it. It's usually more noticeable on decel than excel.

Joshorilla · April 14th, 2013, 03:00 PM

My bikes speedo / cable made a funny noise, now my speedo has given up the ghost and it's in the shop.

It's a possibility.

csmith12 · April 14th, 2013, 03:01 PM

^^^^ definitely worth looking at. A quick lube and you will know.

Motofool · April 14th, 2013, 03:13 PM

Quote:

Originally Posted by blades8306

It's not based on speed or load. I can choke the bike between there and hear it and rev the bike myself to hear it. It's usually more noticeable on decel than excel.

Have you checked that your spark plugs are tight?

Have you checked that your exhaust headers are tight and leak-free?

Have you serviced your cam chain tensioner?

Have you checked the bolts that anchor the engine to the frame?

Have you checked the bolts that keep the plastics together?

DaBlue1 · April 14th, 2013, 03:19 PM

What kind of mods do you have on the bike?
Have you put your head close to the engine while it is idling?
Does it sound like a popping on decel?

blades8306 · April 14th, 2013, 03:31 PM

Oh man getting a lot more back than I thought. I'll need to check those out, I do plan on changing my plugs within the next week. I haven't put my head down by the engine and revved only about the tank.

CC Cowboy · April 14th, 2013, 03:46 PM

Next time you hear it pull in the clutch and see if it stops (making the noise). Check all the bolts on the fairing and fender.

ally99 · April 14th, 2013, 03:56 PM

Man, you guys are smart.

Seriously, I wish I had the mechanical knowledge you all do.

csmith12 · April 14th, 2013, 04:20 PM

If all else is exhausted, it also could be coming from your visor.

mgentz · April 14th, 2013, 04:26 PM

Fairing bolt missing?

blades8306 · April 14th, 2013, 06:36 PM

Clutch doesn't make a difference the noise comes with a load or without. That would dispute the visor or fairings as well.

mgentz · April 14th, 2013, 07:13 PM

While moving...standing still or both?

April 14th, 2013, 01:26 PM	#1
blades8306 ninjette.org member Name: Patrick Location: Orlando Join Date: May 2012 Motorcycle(s): 2011 Ninja 250r Posts: 27	Fluttering noise coming from front of bike. Hello, ninjette community. A couple of weeks ago I started noticing a noise coming from the front of the bike, a noise that sounds similar to a flag quickly flapping in the wind. My 2011 250r has almost 25,000 miles and I can hear the noise between 3-5 thousand RPMs. I'm not sure if the sound goes away after 5,000 or I simply can't hear it over the engine anymore. I'm thinking it's the valves but I'm not 100% sure. I haven't have a valve adjustment in a while so that would lend credence to that theory. I haven't had a problem with how the bike runs, though. If anyone has had a similar problem please let me know.

April 14th, 2013, 02:31 PM	#2
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	So, it is not related to the speed of the bike? Can you reproduce it even when not rolling, just by reving up? __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí

April 14th, 2013, 03:01 PM	#5
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	^^^^ definitely worth looking at. A quick lube and you will know. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

April 14th, 2013, 03:46 PM	#9
CC Cowboy ninjette.org certified postwhore Name: Whodat Location: Ware Is.,MA Join Date: Jan 2009 Motorcycle(s): I pass the wind! Posts: A lot. MOTM - Mar '13, Jun '14	Next time you hear it pull in the clutch and see if it stops (making the noise). Check all the bolts on the fairing and fender. __________________________________________________ If everything seems under control; you're just not going fast enough!

April 14th, 2013, 03:56 PM	#10
ally99 Ninja chick Name: Allyson Location: Athens, GA Join Date: Jun 2009 Motorcycle(s): '13 Ninja 300 Posts: A lot. Blog Entries: 4 MOTM - Dec '13, Feb '15	Man, you guys are smart. Seriously, I wish I had the mechanical knowledge you all do. __________________________________________________ Sometimes it's the journey that teaches you a lot about your destination. ~Drake Check out my Appalachian Trail journal, 2015! Postwhores are COOL! ~Allyson

April 14th, 2013, 02:56 PM	#3
blades8306 ninjette.org member Name: Patrick Location: Orlando Join Date: May 2012 Motorcycle(s): 2011 Ninja 250r Posts: 27	It's not based on speed or load. I can choke the bike between there and hear it and rev the bike myself to hear it. It's usually more noticeable on decel than excel.

April 14th, 2013, 03:00 PM	#4
Joshorilla Bass Master General Join Date: Aug 2012 Posts: A lot. Blog Entries: 24	My bikes speedo / cable made a funny noise, now my speedo has given up the ghost and it's in the shop. It's a possibility.

April 14th, 2013, 03:19 PM	#7
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	What kind of mods do you have on the bike? Have you put your head close to the engine while it is idling? Does it sound like a popping on decel?

April 14th, 2013, 03:31 PM	#8
blades8306 ninjette.org member Name: Patrick Location: Orlando Join Date: May 2012 Motorcycle(s): 2011 Ninja 250r Posts: 27	Oh man getting a lot more back than I thought. I'll need to check those out, I do plan on changing my plugs within the next week. I haven't put my head down by the engine and revved only about the tank.

April 14th, 2013, 04:20 PM	#11
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	If all else is exhausted, it also could be coming from your visor. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

April 14th, 2013, 04:26 PM	#12
mgentz Board Member Name: ... Location: WI Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.	Fairing bolt missing?

April 14th, 2013, 06:36 PM	#13
blades8306 ninjette.org member Name: Patrick Location: Orlando Join Date: May 2012 Motorcycle(s): 2011 Ninja 250r Posts: 27	Clutch doesn't make a difference the noise comes with a load or without. That would dispute the visor or fairings as well.

April 14th, 2013, 07:13 PM	#14
mgentz Board Member Name: ... Location: WI Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.	While moving...standing still or both?

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