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post #1 of 18 (permalink) Old 05-05-2007, 06:50 PM Thread Starter
Zodiac Freak
 
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wow

http://www.youtube.com/watch?v=3IVXUgfvqUE


sorry if its a repost, but, wow.
i cant believe the one guy on the yellow bike saves it

If you are flammable and have legs... you are NEVER blocking a fire exit. - Mitch Hedberg

there is a time and a place for speed... and it is not on the highway with heavy traffic

when the boogeyman goes to sleep at night, he checks his closet for chuck norris.

Chris: Why do you put your hand on your hip when you ride?
Me: Where else would i put it?
Chris: ON THE HANDLEBAR?!
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post #2 of 18 (permalink) Old 05-05-2007, 08:39 PM
bwa
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I've seen majority of the clips, but in one compilation. Some ol' but good stuff.
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post #3 of 18 (permalink) Old 05-05-2007, 09:59 PM
Highspeed ditch inspector
 
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The black bike/rider near the end makes me want to scream, KEEP YOUR FEET ON THE PEGS dumbass!!!

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post #4 of 18 (permalink) Old 05-05-2007, 10:19 PM
1 piece at a time
 
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Quote:
Originally Posted by sqrly View Post
The black bike/rider near the end makes me want to scream, KEEP YOUR FEET ON THE PEGS dumbass!!!
i thought they were flying off because of how much it was shaking

- Steve
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post #5 of 18 (permalink) Old 05-05-2007, 11:01 PM
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Quote:
Originally Posted by sqrly View Post
The black bike/rider near the end makes me want to scream, KEEP YOUR FEET ON THE PEGS dumbass!!!
it's called a tank-slapper, and there is no way he could get his feet back on the pegs.
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post #6 of 18 (permalink) Old 05-05-2007, 11:12 PM
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Although I've never experienced a tankslapper (and hope I never do). Do you give it more throttle or less throttle?

This is why some bikes come with steering dampers direct from the factory. I guess the geometry of the front end causes easily induced resonance/oscillations that cause the tank slapper.
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post #7 of 18 (permalink) Old 05-05-2007, 11:16 PM
Highspeed ditch inspector
 
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I have lock to lock tankslapped multipule times(twice at over 145mph), and had various intensities of head shake hundredes of times, and this is what I've learned.
1) Pinch your knees against the tank.
2) Keep pressure on the pegs with your feet.
3) Press your heels against the heelguards firmly.
4) Grip the handelbar tightly.
5) Keep your upper body loose(go with the flow).
6) Don't try to use your strength to stop it(you are NOT strong enough to stop it anyway).
7) Roll off the throttle and feather the rear brake(to put more weight on front wheel, this will sometimes stop the ocilation)(DO NOT lockup the rear wheel).
8) If #7 doesn't work, quickly go to FULL throttle(as though your trying to jerk a wheelie, with the bouncing of the front wheel and the full throttle together, you may float the front wheel long enough to stop the ocilation).
9) If all fails STAY ON THE BIKE, say to yourself "OH-SHIT", tighten your sphincter(so you don't crap yourself), and ride it out. If you crash riding it out you will not get hurt any worse than if you bail (I have never crashed with this method).

Justin (squirrely) D.

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post #8 of 18 (permalink) Old 05-05-2007, 11:19 PM
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Quote:
Originally Posted by GPz1100 View Post
Although I've never experienced a tankslapper (and hope I never do). Do you give it more throttle or less throttle?

This is why some bikes come with steering dampers direct from the factory. I guess the geometry of the front end causes easily induced resonance/oscillations that cause the tank slapper.
I've never experienced anything like that and I hope I never do... But from what I've read on the subject, there're two schools of thought: 1) less throttle, let it settle down; 2) significantly more throttle to lift the weight off the front and wheelie it if possible, straighten it out and land carefully. Personally, I think it's next to impossible to follow the "wheelie it" advise. However, either increasing or lowering the speed should reduce the oscillation because it's caused by the combination of factors and specific speed is one of them.

- Stas

Thou shalt not disfigure the soul.
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post #9 of 18 (permalink) Old 05-05-2007, 11:30 PM
Highspeed ditch inspector
 
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Quote:
Originally Posted by GPz1100 View Post
Although I've never experienced a tankslapper (and hope I never do). Do you give it more throttle or less throttle?

This is why some bikes come with steering dampers direct from the factory. I guess the geometry of the front end causes easily induced resonance/oscillations that cause the tank slapper.
Steering dampers are not a fixall but they help prevent the first oscillation from occuring. But if it does slap with a damper it shakes the rest of the bike much more violently. I have slapped my aprilia RSV (steering damper comes stock) at 145mph. It was VERY violent, I thought the bike was going to roll under me. Left black markes in the road 3-1/2 feet side to side. Very scary!

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post #10 of 18 (permalink) Old 05-05-2007, 11:34 PM
Highspeed ditch inspector
 
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Quote:
Originally Posted by Fracker View Post
Personally, I think it's next to impossible to follow the "wheelie it" advise.
That is the method that has worked for me almost every time.

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post #11 of 18 (permalink) Old 05-05-2007, 11:35 PM
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Quote:
Originally Posted by sqrly View Post
That is the method that has worked for me almost every time.
Thanks I do not doubt your words. But I highly doubt that I will keep cool enough to wheelie it during tankslapper

- Stas

Thou shalt not disfigure the soul.
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post #12 of 18 (permalink) Old 05-05-2007, 11:59 PM
Highspeed ditch inspector
 
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Quote:
Originally Posted by Fracker View Post
Thanks I do not doubt your words. But I highly doubt that I will keep cool enough to wheelie it during tankslapper
Just to dispell the wheelie theorie, your not doing a big wheelie, just floating the front wheel long enough to straiten the wheel. Some times the wheel doesn't even lift more than an inch, but that can be enough.

Don't wory about keeping your cool, just stay on the bike, and try things out of fear. Thats how I did it the first 6-8 times. By then you will figure out something that works.

sqrly

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!!!!!!!( y )!!!!!!!!!!!!!!!!

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Last edited by sqrly; 05-06-2007 at 12:17 AM.
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post #13 of 18 (permalink) Old 05-06-2007, 12:12 AM
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Quote:
Originally Posted by sqrly View Post
Just to dispell the wheelie theorie, your not doing a big wheelie, just floating the front wheel long enough to straiten the wheel. Some times the wheel doesn't even lift more than an inch, but that can be enough.

Don't wory about keeping your cool, just stay on the bike, and try things out of fear. Thats how I did it the 6-8 times. By then you will figure out something that works.

sqrly
Thanks! The advise is very much appreciated.

- Stas

Thou shalt not disfigure the soul.
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post #14 of 18 (permalink) Old 05-06-2007, 11:16 AM
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i've always gone with WOT if the front has a bit of shimmy to it. never had a problem with that approach.

while at a shop the other day, a friend and i were talking about what you do in the scenario of high speed on a 600 to the point where you've got no immediate throttle response as you're about topped out. any suggestions?
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post #15 of 18 (permalink) Old 05-06-2007, 11:18 AM
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'97 TLS the tank slapper of all tank slappers - Had a TLR that loved th do it too

"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming WOW, what a RIDE !!"
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post #16 of 18 (permalink) Old 05-06-2007, 11:38 AM
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Video made me cringe! I've only had tank slappers when racing motocross.

2000 Honda CR250R. 2004 Suzuki GSXR 750.
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post #17 of 18 (permalink) Old 05-06-2007, 08:26 PM
Highspeed ditch inspector
 
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Quote:
Originally Posted by crjBeez View Post
i've always gone with WOT if the front has a bit of shimmy to it. never had a problem with that approach.

while at a shop the other day, a friend and i were talking about what you do in the scenario of high speed on a 600 to the point where you've got no immediate throttle response as you're about topped out. any suggestions?
Let off throttle, then wack it open, MAY work! Or just hold on, and if you ride it out, turn around and ride slowly back home, change your shorts, then return to riding WITHOUT doing that again!!!

I have never been able to remove enough fingers to operate the clutch, but that MAY work.

Keep in mind that the rider contributes to the ocillation once it has begun. Have you ever seen the racers get thrown off, and then the bike straitens itself out, and go nice and strait? The bike wants to go strait, so let it, just stay on the bike!

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post #18 of 18 (permalink) Old 05-08-2007, 09:59 AM
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Tank slappers are bad, mmmmkay??

I experienced it once, when i just began riding. Exiting off ramp from 90 onto 294, straightening the bike out after exiting the ramp, i did the superman pose (1 hand riding) until i approached the toll, when i went over a pothole causing me to get thrown back, which caused me to roll on the throttle since i only had 1 hand on the bar. After getting on the gas i did a mini wheelie, when it came down the bars were crossed causing the tank slapper. I freaked out, had a hell of a time trying to grab the left bar since it was shaking uncontrollably, once i did get a grip i tried to fight it but no luck, so i just hugged the tank with my knee's and prayed. My cousin was in front of me and i was watching him to see if he saw this, while i noticed the headlights shaking from left to right. After a few seconds of hell, it finally calm down, luckily before i hit the toll booth lol. Fucking scary.

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Last edited by EndlessRR; 05-08-2007 at 10:02 AM.
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