June 18th, 2011, 09:13 AM | #1 |
ninjette.org member
Name: John
Location: Los Alamitos
Join Date: Jun 2010 Motorcycle(s): 2010 Ninja 250r Special Edition (Red/Black) / 2008 Suzuki GSXR 600 (Silver/White) / Ducati Diavel Carbon Red Posts: 76
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Quick stop and felt the bike's rear tire start to fishtail back and forth
While riding back home from a drill weekend this person on the freeway just stopped in the middle of the freeway. Luckily I was on the outer lane so we were not going top speed but still fast enough.
The car that stopped was the second car in front of me. The car directly in front of me had to slam on his brakes too and he swerved to the right into the emergency lane. That was good because it gave me that extra space to stop. I felt the bike's rear tire start to fishtail back and forth but I was able to maintain my balance and not fall. I stopped just in time but as you can see from the force of my braking that it ate up my tire and left permanent marks on it from the lines in the road.
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2010 Ninja 250r Special Edition Blk/Red, Pazzo controls, Lowering kit, Roaring Boyz Toyz risers, Corbin seat, Shogun frame sliders, Yoshimura Full Exhaust 2008 Suzuki GSXR 600 Silver/White |
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June 18th, 2011, 09:21 AM | #2 |
ninjette.org guru
Name: Steve
Location: DFW
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I had that happen yesterday when headed home from work. Was in the far left lane of 4 lanes when a sign warned of construction ahead. This section of road specifically states "NO TRUCKS LEFT LANE", but a semi driver dip**** felt like ignoring it and forced his way in to the far left lane, while also hitting his brakes. The truck infront of me was forced off the road on to the shoulder, barely avoiding being hit.
I had to slam on my brakes as well, and my rear tire swerved back and forth. All I could think was " *** I'm going to highside on the highway as soon as my rear tire grips" |
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June 18th, 2011, 10:09 AM | #3 |
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Mikey, front brake,less rear brake, or no rear brake. This will help more than a front break, which usually means you had an accident.
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June 18th, 2011, 10:21 AM | #4 |
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.
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https://picasaweb.google.com/lh/phot...eat=directlink
My FRONT tire. that's actually after I rode it several more miles. |
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June 18th, 2011, 01:01 PM | #5 |
ninjette.org dude
Name: 1 guess :-)
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+1036
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June 18th, 2011, 01:36 PM | #6 |
"scandal!"
Name: Adan
Location: Somewhere
Join Date: May 2011 Motorcycle(s): 2011 250R(Crashed 2/26/2014), 09 ER6n Posts: 660
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What CC Cowboy said, maybe you locked up the rear?
I've locked up my rear many times. Finally think I got a good balance of front and rear now after a few months. |
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June 18th, 2011, 01:38 PM | #7 |
Professional belly dancer
Name: James
Location: Toronto
Join Date: Apr 2009 Motorcycle(s): 1992 GSX-R 750 Posts: A lot.
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LOL I did that during my test. Take home lesson: don't do that during your test.
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June 18th, 2011, 01:49 PM | #8 |
Opinionated individual :)
Name: SecretNinjaMan
Location: Nor Cal
Join Date: May 2011 Motorcycle(s): 2010 Ninjette Special Edition (red/black) Posts: 342
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I fishtailed my rear about 8ft yesterday as well, didnt realize how easy it is to lock up that rear tire.
Noted to brake harder on front/less rear.
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Yoshi slip on, shimmed 2 washers, zip tie throttle mod, pre-load #2, snorkel delete 2010 SE 250R! Miles in the saddle: 1000 |
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June 18th, 2011, 01:59 PM | #9 |
Always.
Name: Alex
Location: Calgary, AB
Join Date: Mar 2011 Motorcycle(s): '08 Ninja 250, '05 GSX-R600 Posts: A lot.
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Don't you highside when front catches grip?
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June 18th, 2011, 02:19 PM | #10 |
CPT Falcon
Name: J.Emmett Turner
Location: Newnan, GA
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You can. It's likely. I didn't. I'm lucky.
The tire basically folded and jerked the tire/bars to the side almost as soon as the tire chirped but I had already let go of the brake and it snapped back and righted itself. I felt the bike lean left and then snap back up, so I almost got tossed. Strangely, the bars didn't move enough to snap out of my hands so the jerk isn't what released the brake and freed the front tire... it was just fast/lucky reaction. I finished riding to work and took that picture. The tire felt really soft and gummy/sticky where the tread was roughed up. |
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June 18th, 2011, 02:42 PM | #11 |
So, where's the reverse?
Name: Anson
Location: Ontario, Canada
Join Date: Nov 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
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Yikes! That's one hard skid. It doesn't take much to lock up the rear. I did it once when I had to do a quick stop and I didn't feel like I put that much pressure on the rear brake but I clearly put too much. I wonder how effective a linked abs braking system would be in these situations.
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June 18th, 2011, 02:48 PM | #12 |
ninjette.org guru
Name: Steve
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June 19th, 2011, 12:31 AM | #13 |
ninjette.org certified postwhore
Name: Murphey
Location: Eastern Washington
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I've locked my rear up once in a parking lot practicing.. it only lasted a second but it slid out about 1.5 feet to the left then regained traction and snapped back straight, scared the crap out of me! I was just getting a feel for the rear brake didn't realize how sensitive it was!
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June 19th, 2011, 02:40 AM | #14 |
vampire
Name: A
Location: IT
Join Date: Feb 2011 Motorcycle(s): 2 many 2 list Posts: A lot.
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I was told to look ahead from time to time, 3 to 5 cars up, keep a safe following distance, have yet to exercise a skid in traffic this season.. But practiced a few times in empty parking lots. Let off the rear brake just as you feel it start to skid, use the front brake as your main stopping power.
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June 19th, 2011, 11:08 AM | #15 |
ninjette.org certified postwhore
Name: zartan
Location: spam la
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+1
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June 19th, 2011, 11:49 AM | #16 |
ninjette.org member
Name: Jeff
Location: PA
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I don't use my rear brake in emergency braking situations...it locks up too easy.
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June 19th, 2011, 11:55 AM | #17 |
Join Date: Nov 2008 Posts: Too much.
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...and if you ever do skid your rear tire due to using too much rear brake, don't let up on the brake pedal till the bike comes to a complete stop. otherwise, there is a chance the bike can highside when you let off on the rear brake. MSF 101.
Last futzed with by kkim; June 19th, 2011 at 02:27 PM. |
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June 19th, 2011, 02:21 PM | #18 |
There's a limit to s2pdty
Name: A.D.
Location: NoVa the burg
Join Date: Apr 2011 Motorcycle(s): 250r ninja (sold) Posts: A lot.
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I heard that our bikes are soo lite that almost every-time you do an emergency stop, there's a big chance that the rear will lock-up (And I've fish-tailed a couple of times but not that bad. I need more practice)
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June 19th, 2011, 02:37 PM | #19 |
ninjette.org dude
Name: 1 guess :-)
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It's not just due to our bikes being light. Any short-wheelbase sportbike with enough front brake to stop the wheel quickly has the same issue. The weight transfers to the front, leaving very little weight on the rear to keep it in contact with the ground and provide any braking force. The front is the brake that matters. Get it right, and the stops will be short, no matter what you do with the rear. Screw up the front braking, and you can't make up any of the performance by even textbook perfect braking on the rear. If you lock up the rear during braking, directional control is pretty much lost, and the bike will go straight where its inertia is already carrying it. This may be OK in a straight line, but in a curve it means that the bike is going straight off the road if the starting speed is high enough.
More info in these threads, linked from the riding skills sticky: Thread 1 Thread 2
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June 19th, 2011, 02:38 PM | #20 |
Wartown, USA
Name: Bryan
Location: Warner Robins, GA
Join Date: Nov 2009 Motorcycle(s): 2009 Ninja 250R SE, 2007 Ninja 650R, and assorted other bikes Posts: A lot.
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Locking up the rear doesnt automatically result in a highside. If the bike remains upright and going straight, it wont do much other than skid. Not only that, but if the bike is straight up, and the rear tire is locked, releasing the back break also does not guarentee a highside.
What causes a high side, is when the rear tire is not in alignment with the front. When it regains traction( usually by letting off the brake), it has a tendancy to try to realign itself with the front wheel. When it does this, it rapidly snaps the rear wheel back to a straight alignment....which launches the rider. I have highsided on a bike before. It is not a pleasant experience. Basically at first it feels like you are drifting the rear (which you are). When it regains traction, the rear IMMEDIATLY trys to go from a drift back to normal upright riding alignment. The launch feels like the seat kicks you in the arse. And of course the next second, your butt catches air, and your feet come off the pegs....the rest is motorcycling's way of ruining your day. Now, ive gotten into potential highside territory again since then.. What i usually do is use my legs to lift off the seat a bit...when the rear bucks, i try to absorb the kick by letting my knees soak up the push...similar to jumping off something, and flexing your knees when you land on your feet to soak up the energy. I however dont recommend this strategy to inexperienced riders...a highside kick is still a highside kick...better to avoid it all together. The last one, i had was in a high speed really leaned over corner. Apparantly i ran out of tire, and got too close, or on the sidewalls...it started to lose traction, and i let off the gas a bit, knowing it was going to kick me when i did. I lifted off the seat a bit in preperation, it regained traction, kicked as i suspected... And i rode it out. Again...do not try this...just FYI if you somehow manage to mess up, and things are not looking good. |
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June 19th, 2011, 02:50 PM | #21 | |
ninjette.org dude
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Quote:
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June 19th, 2011, 03:03 PM | #22 |
Join Date: Nov 2008 Posts: Too much.
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June 20th, 2011, 06:00 AM | #23 | |
ninjette.org guru
Name: Steve
Location: DFW
Join Date: Apr 2011 Motorcycle(s): 2010 Ninja 250R Posts: 294
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Quote:
The rear brake takes a very small amount of pressure... and it's hard to control that in an "OH SHOOT" emergency. |
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June 20th, 2011, 06:22 AM | #24 |
ninjette.org certified postwhore
Name: Whodat
Location: Ware Is.,MA
Join Date: Jan 2009 Motorcycle(s): I pass the wind! Posts: A lot.
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Are we talking about stopping or a drive by?
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If everything seems under control; you're just not going fast enough! |
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