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Old 03-01-2009, 12:23 PM   #1
FKNA
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Tank Slapper Theory

I tend to watch a lot of videos of motorcycle crashes. I do so in order to make myself a better ride, in order to try to figure out how I might be able to avoid the crash if I ever find myself in a similar situations. For a long time I have studied tank slappers. In a lot of the videos I have seen where someone gets thrown off the bike due to a tank slapper I have noticed as soon as they get bucked off the bike straightens up and keeps on going. I developed a theory that if I ever found myself in a tank slapper situation that the best thing to do is to let go and do nothing. Yesterday my theory was put to the test. I found myself facing a tank slapper at 120mph. So I did just that, I let go of the bars. The tank slapping stopped, I grabbed the bars and continued on. I am not advocating that is the correct thing to do, who knows maybe I just got lucky. But if I find myself in another tank slapper situation, I will do it again, just let go.
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Old 03-01-2009, 12:30 PM   #2
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That's what I've heard also, loosen your grip or completely let go and hold on with your legs. Sometimes it happens so fast especially at 100+ that it's difficult to react quick enough.

Glad you were able to save it.
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Old 03-01-2009, 12:30 PM   #3
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Old 03-01-2009, 01:43 PM   #4
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I had one at between 60-70mph before and i just got off the throttle and let the bike do it's thing and it quit pretty quick. Luckily i was close to home to change into fresh underwear!
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Old 03-01-2009, 01:56 PM   #5
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GPR FTW! lol i wouldnt want to let go without a steering dampener
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Old 03-01-2009, 02:36 PM   #6
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keep weight off the front. That's the science
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Old 03-01-2009, 02:59 PM   #7
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Quote:
Originally Posted by FKNA View Post
I tend to watch a lot of videos of motorcycle crashes. I do so in order to make myself a better ride, in order to try to figure out how I might be able to avoid the crash if I ever find myself in a similar situations. For a long time I have studied tank slappers. In a lot of the videos I have seen where someone gets thrown off the bike due to a tank slapper I have noticed as soon as they get bucked off the bike straightens up and keeps on going. I developed a theory that if I ever found myself in a tank slapper situation that the best thing to do is to let go and do nothing. Yesterday my theory was put to the test. I found myself facing a tank slapper at 120mph. So I did just that, I let go of the bars. The tank slapping stopped, I grabbed the bars and continued on. I am not advocating that is the correct thing to do, who knows maybe I just got lucky. But if I find myself in another tank slapper situation, I will do it again, just let go.
There are some skills and luck that goes hand in hand with controlling a tank slapper. Tank slapper at 120mph???? That's more luck than skill. Glad you didn't crash, it would have been a nasty one.
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Old 03-01-2009, 03:01 PM   #8
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what is the main cause of a tankslapper? in my 3 years of riding i have never gotten maybe a mini version of one but not a good tankslapper
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Old 03-01-2009, 03:06 PM   #9
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Quote:
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what is the main cause of a tankslapper? in my 3 years of riding i have never gotten maybe a mini version of one but not a good tankslapper
front tires off the ground slightly from wheelies or anything causing a lift, wheel crooked.
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Old 03-01-2009, 03:08 PM   #10
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I have a dampner, but I have heard that they can actually make the slapper worse. They give input to the chassis which is the last thing you need during a slapper. Fortunately I have never had a "tank slapper". Headshake, yes, but a severe slapper like videos I see, no. Wait...actually I set a wheelie down once at and had a lil poke it's head out, but it was nothing like what I have seen, via video, others experience.

I think people get the two confused. Or maybe I am confused. Forget about me...carry on.
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Old 03-01-2009, 03:16 PM   #11
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confuzed, me too I agree thats weird because I do wheelies all the time and have never encountered this problem i have done them in first gear and second gear 60+ mph stand ups am i just lucky? do i automatically just know how to control my bike well ? is the landing the cause ?
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Old 03-01-2009, 03:20 PM   #12
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Quote:
Originally Posted by ALEXD View Post
confuzed, me too I agree thats weird because I do wheelies all the time and have never encountered this problem i have done them in first gear and second gear 60+ mph stand ups am i just lucky? do i automatically just know how to control my bike well ? is the landing the cause ?
I'm no stunter, but I have heard this comment and I practice it.

"You have to put as much, if not MORE effort into setting a wheelie down as you do getting it up"

I try to make sure I am accellerating, my bike is straight and my wheel is straight before I set it down.

I dont do slow wheelies tho.
I dont know how.
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Old 03-01-2009, 03:25 PM   #13
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Quote:
Originally Posted by ALEXD View Post
confuzed, me too I agree thats weird because I do wheelies all the time and have never encountered this problem i have done them in first gear and second gear 60+ mph stand ups am i just lucky? do i automatically just know how to control my bike well ? is the landing the cause ?


If you are putting your wheel down crooked you will get it.
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Old 03-01-2009, 03:27 PM   #14
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"You have to put as much, if not MORE effort into setting a wheelie down as you do getting it up"

I try to make sure I am accellerating, my bike is straight and my wheel is straight before I set it down.

AHHHH CDIL Son you have mastered the theory of tankslapper Now, go wash your bike and remember wax on wax off !

no really that sounds about right when doing fast wheelies, i can barely do a slow on myself but for highspeeds i think this is the best approach when landing
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Old 03-01-2009, 03:34 PM   #15
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Yep, putting the wheel down crooked can definitely cause it. That's how mine happened. I wasn't doing an intentional wheelie, just getting down on it. Front wheel only came off the ground by a few inches, gust of wind hit me from the side at the same time, and down I come crooked. It slapped 3 times on me, once to the left (that's when I let go), once to the right then once more to the left before it straightened up. I also have an Ohlins damper in which I keep set on about 4.
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Old 03-01-2009, 03:35 PM   #16
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there was a training video or something that i have seen.. not sure what it was called but the guy demonstrated a tank slapper at like 80 mph and showed how the bike was still stable and corrected it by itself. he was on a cruiser not a sport bike but it was pretty cool. i've been caught in a few and i just let it correct itself.. its kinda crazy when it happens but u get use to it.
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Old 03-01-2009, 03:36 PM   #17
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Quote:
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there was a training video or something that i have seen.. not sure what it was called but the guy demonstrated a tank slapper at like 80 mph and showed how the bike was still stable and corrected it by itself. he was on a cruiser not a sport bike but it was pretty cool. i've been caught in a few and i just let it correct itself.. its kinda crazy when it happens but u get use to it.

If you come across that video, post it up. I would like to see it
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Old 03-01-2009, 03:38 PM   #18
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so who here would recomend a dampner ? wich would you recomend out of a dampner or stabilizer
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Old 03-01-2009, 03:50 PM   #19
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Quote:
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so who here would recomend a dampner ? wich would you recomend out of a dampner or stabilizer
they are the same.
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Old 03-01-2009, 03:55 PM   #20
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