It happened right in front of me...... - BMW Luxury Touring Community
 
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post #1 of 20 Old Jun 13th, 2007, 10:50 pm Thread Starter
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It happened right in front of me......

I was in my big diesel cage, N/B 14--Palmdale Bl, HOV lane, 85-90 MPH. A Blue crotch rocket was approx 300 yards in front of me, also in the HOV lane--and moving (90+).

All of the sudden, homie's back tire breaks loose! His shit starts fishtailing. He's wagging like a cheap hooker on a busy boulevard on a hot Saturday night. He tries to ride it out for approx 1/4 mile. But, the fishtailing is just too severe and he looses it.

He hits the pavement at 60+ (#1 lane) and the bike explodes! Not as in fire, but as in parts of the bike fly everywhere! Homie slides for approx 1/8 mile and FINALLY comes to rest against the curb, on the right shoulder. His bike also comes to rest on the right shoulder, approx 100 yards in front of him.

Luckily, there is not much traffic at 0800 on a Saturday. As I pull over to try and help him, I'm running over numerous pieces of his bike scattered over all 3 lanes of the highway. To my surprise, and relief, homie has nothing more than a moderate amount of road rash on his arms and hands to show for his wild ride. Amazing....and unbelievably lucky!

A quick investigation at the scene revealed that homie had no endorsement (of course!), and thus was not insured. I know--shocking! His bike was a Suzuki 600cc crotch rocket, approx 10 years old. The rear tire was inflated and in fair condition. We guessed that there was a small "slick spot" that homie ran over, added his speed (+ maybe hitting the throttle hard, which he would not admit to) and, as they say, the rest is history. BTW, homie estimated his speed not at 90 MPH, but 65-70. Maybe when he hit the pavement!

So I'm reading the thread about the GT's top speed......and thinking you guys are FUCKING NUTS! BUT, if you gotta go, why not go out in a blaze of glory?!

"Those who would give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety." (Some really OLD friggin' White dude who couldn't have possibly known what he was talking about!) WARNING: Official HATE speech!
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post #2 of 20 Old Jun 14th, 2007, 1:11 am
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Tank slapper, eh?

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post #3 of 20 Old Jun 14th, 2007, 8:13 am
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Quote:
Originally Posted by Zotter
Tank slapper, eh?

From the rear it would look like rear tire broke loose if indeed it was a tankslapper ...hence the waggle.

Happened to me on my 86 XL600R at about the same speed--NOTHING is more frightening than a slapper the "this is really gonna hurt" inner voice screaming!! Then it does.
Thankful that my 05 hasn't exhibited the headshake yet I f++++++
hate it!!!!
Mike
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post #4 of 20 Old Jun 14th, 2007, 8:38 am
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That was me on a 1975 Triumph Trident going 105 MPH back a couple of decades ago. Suddenly and for no good reason, the bike went into a full on tank slapper which I rode down to 60 or 70 MPH and then high-sided. A long slide, then me and the bike ended up in the breakdown lane on Route 93 in NH. I still can't believe I walked away from that one, no major injuries, didn't get my ass run over, etc. Mike said it well, "that little voice screaming inside your head that this is gonna hurt!"

There's a big difference though between the headshake which is common on LTs and many other bikes given the right conditions and a real tankslapper though. The headshake stops when you put your hands back on the bars. There's absolutely no pulling out of a true high-speed wobble tank-slapper. You're a gonner when it happens. I've never heard of an LT doing that.

-joel
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post #5 of 20 Old Jun 14th, 2007, 8:56 am
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OK I'll bite..who are all the LTers that ride with no hands on the bars???

Raise your hand (says Wolf Blitzer) then 'plain to me your reasoning for the no hands thing if that is the ONLY time the chassis behaves so badly??


Mike
Remember-I have been in a slapper and look at riding though
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post #6 of 20 Old Jun 14th, 2007, 9:28 am
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Brings back memories. My first street bike, a 71 HD Sprint 350, attempted to throw itself to the ground once. I was on a straight, level 2-lane backroad running 85-90 mph when the tankslapper started. I eased off the gas and managed to hang on without using the brakes. The dance stopped once I got down to about 30 mph. Even though I was only 5 min from home, I had to pull over and stop a minute to pry the seat out of my pants.

My real name is Homeopopoulous the First, but my good friends here can just call me "Homie, Sr."
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post #7 of 20 Old Jun 14th, 2007, 9:42 am
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Many times on the 600 doing simular speeds on the 600 the head shake would happen it was pretty severe...asked those that know and the answer was they'll do that...HUH ???
I was young and dumb so found the best fix to the shake was to remove my clutch hand, tuck, and gently roll off throttle then it would eventually sort out.
No chance on the slapper though, no warning just plain ugly...by the way-bike was fixed before I was-had alot of spare shiny parts thanks Progressive.


Mike
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post #8 of 20 Old Jun 14th, 2007, 9:44 am
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I think mine was on an old 650 Suzuki...about 1975 or so...The date, not the bikes year..Don't remember what that was..


Accellerating rounding a corner on some very,very coarse blacktop..She just went nutz on me...

I thought I was going to be getting some new skin. But I held on and finally got her slowed down enough to get back under control....

I always thought it was because of the fairing that was attached to the front end...Some kind of wild western Oklahoma wind related incident.


That's the only time it ever happened to me..

John

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post #9 of 20 Old Jun 14th, 2007, 10:35 am
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Quote:
Originally Posted by shadowofshoe
OK I'll bite..who are all the LTers that ride with no hands on the bars???
That is how I determine when to change the tires.
If it wobbles - I replace 'em!

Actually that is the only time I have let go completely was see if I had the "shake". Not something I would do routinely. I rank it up there with checking your eyelids for light leaks at 70 + on the interstate.

John
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post #10 of 20 Old Jun 14th, 2007, 10:43 am
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My 02 LTC was trying to do tankslappers all the way up I-35 in TX with a brand new set of Avons that I decided to try...ran it slow, ran it to the top end, still trying to beet me up...u bet my hands were on the grips.

no rhyme or reason, never before or after once I got rid of those nasty things, metzler's are forever...

I can't figure it out, but i know they are scary, had one on a sport bike, difficult to overcome sometimes.
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post #11 of 20 Old Jun 14th, 2007, 1:14 pm
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Quote:
Originally Posted by shadowofshoe
OK I'll bite..who are all the LTers that ride with no hands on the bars???

Raise your hand (says Wolf Blitzer) then 'plain to me your reasoning for the no hands thing if that is the ONLY time the chassis behaves so badly??


Mike
Remember-I have been in a slapper and look at riding though
experiance
The head shake happens with the LT on decel at about 45mph, or so, with your hands off the bars. Most of the guys are pulling a zipper, adjusting a helmet or scratching a horrible itch with both hands at the time. The thang to do is set the cruise when you play such games.

I high sided once (not a tank slapper) and desperately never want to do it again.

I also went down on the LT when the rear broke loose in the wet on an oil slick doing a steady speed. I think swapping ends was the reason I crashed.



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post #12 of 20 Old Jun 14th, 2007, 1:52 pm
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Quote:
Originally Posted by shadowofshoe
NOTHING is more frightening than a slapper the "this is really gonna hurt" inner voice screaming!! Then it does.

Mike
Truer words never spoken! My inner voice said "I'm dead!"
Early 80's riding a 1978 GL1000 on a straight 3 lane highway around midnight doin' around 90 when I started gettin' a wobble. I used all of my 10 days worth of riding experience to stop it. Low side splat. Tore up body and bike but walked away with nothing broken.
Stupid, stupid, stupid. But I learned from the experience.

"Smitty"
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post #13 of 20 Old Jun 14th, 2007, 6:14 pm
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Quote:
Originally Posted by oldschool78
Stupid, stupid, stupid. But I learned from the experience.
What did you learn, other than ATGATT? (all the gear, all the time)

I'd give up biking if I was too afraid to do 90 mph. I ride hundreds of miles at a whack at those speeds.

Ok, there are things you do learn from the experience, and one of them is to understand the limitations of your machine. In my case, a '75 Trident shouldn't be ridden at 100 MPH. In your case, a GL1500 probably isn't trustworthy at 90 mph. And LT's can't be trusted decelerating at 45 mph with your hands off the bars. Actually, I'll still do it on occasion, I just try to be quick.

As far as riding the LT with no hands, doesn't everybody try to see how long they can ride with no hands on the LT? I've ridden many miles that way on cruise, taking the corners with body english. I'm sure I'm not alone here. I'll bet Grif has ridden half of Texas that way.

-joel
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post #14 of 20 Old Jun 14th, 2007, 7:32 pm Thread Starter
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Quote:
Originally Posted by kdog
What did you learn, other than ATGATT?....
I would think he learned to SLOW DOWN!

"Those who would give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety." (Some really OLD friggin' White dude who couldn't have possibly known what he was talking about!) WARNING: Official HATE speech!
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post #15 of 20 Old Jun 14th, 2007, 7:50 pm
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Quote:
Originally Posted by kdog
I'm sure I'm not alone here. I'll bet Grif has ridden half of Texas that way.

-joel
I've ridden at least half of west Tejas asleep.



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post #16 of 20 Old Jun 14th, 2007, 7:52 pm Thread Starter
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Quote:
Originally Posted by oldschool78
Truer words never spoken! My inner voice said "I'm dead!"
Quote:
Originally Posted by thomas_l
My real name is Homeopopoulous the First, but my good friends here can just call me "Homie, Sr."
Taking notes from the senior riders over the last three years, this phenomenon of your rear wheel trying to walk off from under you seems to be one of the most common non-contact collisions.

I'm riding at a reasonable speed (not 90!), watching how hard I twist that throttle and wearing my gear!

In the Ghetto, "we" refer to all "dumb shits" as "homie."

"Those who would give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety." (Some really OLD friggin' White dude who couldn't have possibly known what he was talking about!) WARNING: Official HATE speech!
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post #17 of 20 Old Jun 14th, 2007, 8:20 pm
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Originally Posted by jayjacobson

In the Ghetto, "we" refer to all "dumb shits" as "homie."
Ahhh! That's why my mother calls me that.



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post #18 of 20 Old Jun 15th, 2007, 7:16 am
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Quote:
Originally Posted by oldschool78
But I learned from the experience.
ATGATT, of course. Beyond that, as stated, with only 10 days of riding experience under my belt, I was way over my head riding that fast. I didn't know much about the bikes tendencies(I've had 3 GL1000's that all had stability issues at high speed). I had just added a windshield which changed the dynamic of the bikes handling. Only thing I did right was to choose a long straight empty road to do it on. Know your bikes limits and tendencies. Know your limits and work to expand them in safe increments.

Quote:
Originally Posted by kdog
I'd give up biking if I was too afraid to do 90 mph.
-joel
Wasn't afraid to do it then or now. Difference now is 20+ years of riding experience and good common sense(most of the time anyway).

"Smitty"
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post #19 of 20 Old Jun 15th, 2007, 10:08 am Thread Starter
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Originally Posted by grifscoots
Ahhh! That's why my mother calls me that.
Oh my!......

"Those who would give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety." (Some really OLD friggin' White dude who couldn't have possibly known what he was talking about!) WARNING: Official HATE speech!
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post #20 of 20 Old Jun 15th, 2007, 1:55 pm
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Originally Posted by jayjacobson
Taking notes from the senior riders over the last three years, this phenomenon of your rear wheel trying to walk off from under you seems to be one of the most common non-contact collisions.

I'm riding at a reasonable speed (not 90!), watching how hard I twist that throttle and wearing my gear!

In the Ghetto, "we" refer to all "dumb shits" as "homie."
We should all be driving Volvo sedans then. Then again, I would trip over the door sill and break my neck getting out.

Guilty as charged on the last part. That which don't kill you has to be twice as fun going even faster

Grif: Now you just have to try asleep with no hands at 100 but use the cruise - wouldn't want you to take any unnecessary risks.
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