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Time to change the underpants.

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ThunderGuts
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PostPosted: 08:58 - 09 Aug 2022    Post subject: Reply with quote

I'm fortunate (so far!) that I've not had any serious near misses, the worst was a rural B-road somewhere in the north-west Yorkshire Dales. My mate and I were on a weekend tour, I was only 9 months into my riding. It was late in the day, we were both getting pretty tired, the intercom batteries had died. My mate is a much more competent rider and was riding a much much sportier bike (his S1000XR vs my Street Twin). He was leading and a left hand turn, a bit blind, I went into a bit hot trying to keep up with him. It then tightened up mid-turn, but I didn't have the experience to deal with this properly and rather than lean the bike in even more (I was already leaning about as far as I'd ever leant at this stage!) I pulled the anchors. The bike had ABS and it was dry, so no loss of traction, but of course the bike stood up and I ploughed straight onto the other side of the road, only just managing to recover it before the hedge. Thank f*ck there wasn't any oncoming traffic or else I'd have been toast.

Several lessons learnt that day; don't enter a blind bend fast (especially when you don't know it), don't brake when cornering (or at least only the slightest feathering of the rear brake) and don't ever try and keep up with a faster rider and in doing so push the envelope of your own ability.
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BanditsHigh
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PostPosted: 09:25 - 09 Aug 2022    Post subject: Reply with quote

Early morning (just after 6am) on the M74, winter so dark and also pissing down ... doing around 90 in the outside lane ........ then the bars went to full left lock Shocked

The brain just went ...... ooooooooooh fuck ..... a few seconds passed and then the bars went straight again Praying ... needless to say, I slowed down!!

Lesson learnt, going fast in the rain and hitting standing water will make you aquaplane ... to this day I still can't believe I didn't come off.

All the best ... Barry
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BRUN
Trackday Trickster



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PostPosted: 10:46 - 09 Aug 2022    Post subject: Re: Time to change the underpants. Reply with quote

chickenstrip wrote:
What's the most frightening experience you have had on a bike, that you walked away from physically unharmed, and maybe learned something to stand you in good stead for your future riding?

Mine goes all the way back to my earliest days with my Kawasaki GPz750 Turbo.
I had it in a lock-up before I'd even passed my test, and would go out and sneak rides on it late at night.
I was on a very wide, multi-lane dual carriageway (where the A406 North Circular joins the M11). A gentle downhill slope, I was in one of the nearside lanes heading for the roundabout that the beginning of the motorway then passes over. I had wound it on full throttle, speed probably got up to something like 130mph or thereabouts when the bike went into the most terrifying and violent tank slapper, a proper lock-to-lock one.

Here I was, a total n00b on big bikes, with no idea that a bike could do something like that, and no idea of how to react. They don't teach you such things in novice bike training!

I remember feeling that it would be a mistake to try to brake, or even to try to take firm charge of the steering. It seemed to go on forever, but couldn't have lasted more than a few seconds in reality. I just really lightened my grip on the bars (which I could barely touch anyway, so violent was the movement going on), let go of the throttle, and waited for my imminent demise when it would finally spit me off. But fortunately, it settled out quickly as the speed dropped. To this day, I have no idea if there was something I could have done to take back charge quicker than I did, and thankfully, have never experienced another one. And thank the heavens that it happened in such a wide open space late at night when there was very little other traffic around!

I rode straight home, put the bike away, and went to bed, probably with the adrenaline still coursing through me Laughing

I'm not sure what lessons I specifically learned from that, other than that big, powerful bikes deserve a lot of respect, and maybe I learned something about sensitivity to how a bike is behaving from moment to moment, when it's telling you to back off before you get into trouble.


what is the correct thing to do in this scenario ? ive never had it happen to me, hopefully never will lol
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chickenstrip
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PostPosted: 12:42 - 09 Aug 2022    Post subject: Re: Time to change the underpants. Reply with quote

BRUN wrote:
chickenstrip wrote:
the bike went into the most terrifying and violent tank slapper, a proper lock-to-lock one.


what is the correct thing to do in this scenario ? ive never had it happen to me, hopefully never will lol


I don't actually think there is anything pro-active you can do. It's so violent, and happens so quickly, that by the time you've realised what's going on it's over, and either it recovers, as it did with me (pure luck), or you're off.
It's literally so violent that you can't really even hold on to the bars, it just throws your hands off.
It's very rare thankfully, I don't think many riders have experienced it (or they haven't lived to tell the tale Shocked ). Seen footage of it happening to racers, and usually they crash.
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Nobby the Bastard
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PostPosted: 12:49 - 09 Aug 2022    Post subject: Reply with quote

Yep, when it happened to me I got thrown about 8' into the air and then sliding down the road at 50 mph.
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chickenstrip
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PostPosted: 12:53 - 09 Aug 2022    Post subject: Reply with quote

Nobby the Bastard wrote:
Yep, when it happened to me I got thrown about 8' into the air and then sliding down the road at 50 mph.


What were the circumstances of yours Nobby?
I suspect mine was due to speed on tyres that perhaps weren't at the correct pressures, or maybe just how the tyres were worn (they certainly weren't anywhere near their wear limits, I'd just bought the thing) but I really don't know. Can be aggravated by road surface I guess? Dunno.
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Last edited by chickenstrip on 12:56 - 09 Aug 2022; edited 1 time in total
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xX-Alex-Xx
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PostPosted: 12:56 - 09 Aug 2022    Post subject: Reply with quote

Had a couple of cars pull out from T-junctions (after looking me right in the eyes) that I've not had time to brake for, literally just had to pin it and swerve around them. Last one missed me by what seems like millimeters. Both times BMW drivers acting like they own Seat Leons Wink

Had a right old tank-slapper on the 929 coming onto the motorway after I pinned it on the slip road, just a few seconds but when doing <the speed limit> and joining a motorway isn't the best time for it.

Had a good "Nitro Nori" moment this week coming off a roundabout as well, got on the power and the back end came loose (only doing about 40) but managed to stay on the power and got it back into line again. Must have looked like a right hooligan during rush hour traffic Laughing
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ThunderGuts
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PostPosted: 13:47 - 09 Aug 2022    Post subject: Reply with quote

I suspect the tankslapping is possibly aggravated by the load distribution on the wheels too; I've heard of reports where luggage has caused it at speeds where the unladen bike is fine. I suspect this is more to do with aerodynamics than the dead weight itself, but it's still effectively the weight on the wheels changing (presumably the front of the bike unloading?).
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c_dug
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PostPosted: 13:48 - 09 Aug 2022    Post subject: Reply with quote

Thinking I don't know if I've had too many to pick one, or not had one bad enough to stand out from the crowd Neutral
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Nobby the Bastard
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PostPosted: 14:00 - 09 Aug 2022    Post subject: Reply with quote

My slapper was induced by coming off a cowshit covered road that was causing me to lose grip from both tyres. I must have hit the clear grippy section of road a bit crossed up because that's when all hell suddenly broke loose.
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chickenstrip
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PostPosted: 14:02 - 09 Aug 2022    Post subject: Reply with quote

ThunderGuts wrote:
I suspect the tankslapping is possibly aggravated by the load distribution on the wheels too; I've heard of reports where luggage has caused it at speeds where the unladen bike is fine. I suspect this is more to do with aerodynamics than the dead weight itself, but it's still effectively the weight on the wheels changing (presumably the front of the bike unloading?).


The other thing that I think might affect it is steering geometry. Maybe the luggage you refer to slightly alters the geometry outside of the ideal? If there's a bit of weight there?
Something that springs to mind about the Turbo I had it on is that the chain used eccentric adjusters which would slightly alter the geometry at different positions.
Or is it something that can just happen when the steering goes light, for e.g. under hard acceleration? Add in some bumps in the road...?
Or likely just an unfortunate combination of several factors.
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xX-Alex-Xx
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PostPosted: 15:02 - 09 Aug 2022    Post subject: Reply with quote

ThunderGuts wrote:
I suspect the tankslapping is possibly aggravated by the load distribution on the wheels too; I've heard of reports where luggage has caused it at speeds where the unladen bike is fine. I suspect this is more to do with aerodynamics than the dead weight itself, but it's still effectively the weight on the wheels changing (presumably the front of the bike unloading?).


It's why a lot of police forces moved away from the ST-1300s. At least one or two officers died due to too much weight of equipment on the back causing a high speed wobble which planted them into the ground. https://st1300.weebly.com/problems.html
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Weisse Schlange
Spanner Monkey



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PostPosted: 15:23 - 09 Aug 2022    Post subject: Reply with quote

Right hander flat out on a supermoto, leaning that far over that a transit came round the other way and I ducked under his wing mirror.

2 coffees after that one.
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stinkwheel
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PostPosted: 15:52 - 09 Aug 2022    Post subject: Re: Time to change the underpants. Reply with quote

BRUN wrote:

what is the correct thing to do in this scenario ? ive never had it happen to me, hopefully never will lol


Close your eyes and gas it. In that order...

It's as likely to work as anything else.

Doing nothing is probably best, motorbikes generally want to stay upright and go in a straight line and it's usually user input that makes something different happen. Not unusual in racing to see someone get spat off the bike then the bike to keep rolling until it hits a tyre wall.
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chickenstrip
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PostPosted: 16:43 - 09 Aug 2022    Post subject: Reply with quote

In a real lock-to-lock job, you don't get any choice - you can't do anything other than let go of the bars if you don't want to break your hands.
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xX-Alex-Xx
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PostPosted: 18:18 - 09 Aug 2022    Post subject: Re: Time to change the underpants. Reply with quote

stinkwheel wrote:
BRUN wrote:

what is the correct thing to do in this scenario ? ive never had it happen to me, hopefully never will lol


Close your eyes and gas it. In that order...

It's as likely to work as anything else.

Doing nothing is probably best, motorbikes generally want to stay upright and go in a straight line and it's usually user input that makes something different happen. Not unusual in racing to see someone get spat off the bike then the bike to keep rolling until it hits a tyre wall.


Exactly this... Bikes want to sort themselves out after most events, it's rider input ("survival reactions“ as per Keith Code) that fucks things up.
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fw750x
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PostPosted: 18:39 - 09 Aug 2022    Post subject: Reply with quote

40 odd years ago on the Back of a mates Suzuki GT 185. It was the summer time , My mate and another of my mates got GT 185,s . The nearest Off license was about 2 miles away and you where lucky if the on the hour bus would turn up. So i asked my mate would he take me down and bring me back again to get the carry out. No problem jump on so away we go down to the off license with no worries at all. I come out with the carry outs in a Big haversack and climb on board. We are heading back down the 30 mph Speed limit road at 30 mph when an RD 400 Go,s hammering past us , Que my mate down two gears and opens up the Bike flat out to catch the RD 400 , We are now doing about 60 mph and Catching the RD . He see,s us closing in and opens it up with a huge Blast of 2 stroke smoke and takes off again with us in pursuit. Now the road we are on is in a built up area has a Slight Kink in the road that go,s to the right . The mate did not see the Kink in the road and Hits the Kerb were a driveway is and we took off about 5 feet in the air and flew about 25 feet before we landed on 2 wheels with my feet planted into the ground so that we would not fall off . When we stopped my mate took off his helmet he was Pure white and had the shakes and was sweating bucket loads he could not speak for about 5 minutes . I rode the bike back home with him on the Back that took the speed out of him he never did that again , He sold the bike around 2 months later and bought a Mark 2 Escort. I have never went on the Back of anyone since then i would walk or get the bus .
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Nobby the Bastard
Harley Gaydar



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PostPosted: 19:02 - 09 Aug 2022    Post subject: Reply with quote

Yep, according to the witnesses who were driving in the opposite direction they came round a corner to see my bike sans rider barrelling down the road and then I fell out the sky into their headlight beam (it was dark) and bounced a couple of times before I finally slid to a halt.

Yes, that smarted a bit. I had pains in places that I didn't even realise existed for a couple of weeks and almost ended up with gangrene in my knee because the hospital didn't clean it properly or give me antibiotics.
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hellkat
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PostPosted: 21:37 - 09 Aug 2022    Post subject: Reply with quote

Nobby the peg-leg is a difficult image to scrape from one's mind.
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Nobby the Bastard
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PostPosted: 21:46 - 09 Aug 2022    Post subject: Reply with quote

Nobby the tripod.
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grr666
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PostPosted: 23:02 - 09 Aug 2022    Post subject: Reply with quote

hellkat wrote:
Nobby the peg-leg is a difficult image to scrape from one's mind.

Oh Jesus... She's off again.
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hellkat
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PostPosted: 23:26 - 09 Aug 2022    Post subject: Reply with quote

I'm not off! Brick Wall Laughing


... I'm ripe.
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bhinso
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PostPosted: 12:59 - 10 Aug 2022    Post subject: Reply with quote

I was out on my first bike (KMX125) late at night (about 1am) in Sleaford. Crossroads with Green lights so progressed, whereupon a car with no lights on shot across me (having gone through a red light) at estimated 70mph. Missed me by inches, and the yoofs didn't stop.
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Shaft
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PostPosted: 00:18 - 11 Aug 2022    Post subject: Reply with quote

The Shaggy D.A. wrote:
I can't wheelie to save my life, but someone told me you can't wheelie a shaft drive when I'd just got my XJ900F. So, not knowing how to wheelie, the lights went green, I redlined it and dumped the clutch. Next thing I know I'm staring at the tank with my legs dangling off the back, holding on for dear life. Managed to back off the revs, and as the wheel started to come down, I found I was heading towards a parked car. Front wheel hit the ground just in time to miss it. I had no say in the matter, the bike just kinda "bounced" onto a different heading.

I still can't wheelie.


I knew this thread would get me started, so three 'not long had my XJ900F' incidents from1987...........

1/ Popped into work (car dealer) on my day off and the apprentice salesman is drooling over my big bike - I leave, aware he is watching and hit the throttle at just the wrong moment, as the forecourt went from a slight gradient to the flat road and the back end is unloaded - rear wheel spun up and I spectacularly fishtail about 500 yards down the road, to the red traffic light.

Next day, I'm back in work and the lad is like "kin 'ell, you're some rider, that was 'kin superb" and I give a knowing grin, never letting on I was totally out of control and had no idea how I managed to stay on.

2/ Just after the first service, when I could finally open it up, I'm going round the newly opened M25 and finding out what the top speed was - WOT, tucked under my just fitted tall screen and the speedo says 140 something (probably 135 ish) then I glance back at the road and all I can see, across all 3 lanes but quite a way in the distance, is brake lights, so I sit up, throw out the anchors, but I'm not stopping anywhere near quick enough and end up breathing in and passing the car in front between him and the armco, still doing about 80 Shocked

3/ Following a couple of mates who were much quicker than me, going to a bike meet, I think in the Epping Forest - pitch black, clear night and full moon, road is lined by tall trees and is going left and sharply uphill, so it's like looking down a well lit tunnel - I'm giving it the beans, trying to keep up, when I notice a wide, shiny dark stripe down the centre of the lane - I know it's diesel and do my best to avoid it, but I'm committed to my line - back end does a massive step out and I have no clue how I didn't come off, the inner speedway rider in me must've taken over.
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ThunderGuts
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PostPosted: 07:55 - 11 Aug 2022    Post subject: Reply with quote

Shaft wrote:
but I'm committed to my line - back end does a massive step out and I have no clue how I didn't come off, the inner speedway rider in me must've taken over.


Probably a good example of the concept of "let the bike sort itself out". I remember my instructor drumming that into me when I was learning, basically saying that if the bike loses traction, it's fairly unlikely anything you do will make things better, so just let the bike sort itself out.
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