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May 18th, 2014, 06:07 AM
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#1 |
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ninjette.org member
Name: Dan
Location: VT
Join Date: Apr 2013 Motorcycle(s): 2009 Ninja 250R Posts: 11
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Steering Wobble Around 50mph
Hi!
I have a 2009 Ninja 250, and just brought it out from winter storage. Everything works flawlessly, except at around 50mph if I let go of the handlebars, the front wheel/fork/handlebars "wobble" (turns left and right). It never progresses enough to turn into a tank slap, but it's noticeable. If I speed up to anywhere past 60 or slow down to anywhere below 40, it goes away. Any thoughts? |
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May 18th, 2014, 06:53 AM
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#2 |
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RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
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We actually have a long thread dedicated to steering wobble: https://www.ninjette.org/forums/showthread.php?t=13288
To sum it up it could be a factor of things: 1. improper tire pressure 2. unbalanced tire 3. tire brand/design 4. worn tire 5. loose/worn steering stem bearings 6. changes in front suspension angle Some oscillation can be normal as well.
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1 out of 1 members found this post helpful. |
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May 18th, 2014, 08:26 AM
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#3 | |
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motorcycle rider
Name: Bruce
Location: Victoria, BC
Join Date: Apr 2009 Motorcycle(s): '14 Yamaha V-Star 650 Custom (silver) Posts: A lot.
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Quote:
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'14 Yamaha V-Star 650 Custom (silver) |
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May 18th, 2014, 08:38 AM
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#4 | |
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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
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Quote:
That wobble could develop into a dangerous tank slapper. The factory weights at the end of the handlebar are important to reduce that tendency, because those add inertia. Some bikes with modifications to the handlebar don't have those, which is not good. If your tires have counter-weights attached to the edges, try switching them to the opposite side, or even better, replace them with the same weight stuck to the center of the wheel's section.
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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 |
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May 18th, 2014, 12:55 PM
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#5 | |
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Board Member
Name: ...
Location: WI
Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.
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Quote:
 I vote for 1,2 or 5. |
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May 20th, 2014, 02:31 PM
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#7 |
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ninjette.org sage
Name: Brian
Location: Orange County, CA
Join Date: Apr 2012 Motorcycle(s): '12 ninja 250r Posts: 762
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When I put on my new front tires that wobble went away. But yea, it could be any one of those Cuong has listed.
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May 20th, 2014, 02:36 PM
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#8 |
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Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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bad tires
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May 20th, 2014, 03:43 PM
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#9 |
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Board Member
Name: ...
Location: WI
Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.
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Ok...#4 it is. Remember to replace your tires with wear and age as indicators of their condition.
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May 20th, 2014, 04:37 PM
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#10 |
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ninjette.org certified postwhore
Name: Eric
Location: Murfreesboro, TN
Join Date: Jun 2011 Motorcycle(s): '13 300 Posts: A lot.
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It's of course 1 of what Coug posted...
However, seeing as it's an 09...my guess is it has Pirelli Sport Demons on it. If so that wobble is normal at those speeds w no hands. Easy to solve if so... don't take your f*ckin hands off at those speeds... |
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May 21st, 2014, 04:00 AM
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#11 | |
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Fresh Deli Meat
Name: Kevin
Location: Wilkes-Barre, Pennsylvania
Join Date: Feb 2014 Motorcycle(s): 2009 250R Ninja -Neener- Posts: 678
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We shall call thee "Seahorse." -Antiant on Couvade Syndrome |
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