"Skill saves motorcyclists"

[scootnz]

http://www.stuff.co.nz/timaru-herald/news/2373779/Skill-saves-motorcyclists

[Clivoris]

Churrr. A whole box of DB for that man and some for the plod and the paper too.

[Finn]

So will he get some merit points?

Edit: Actually, thinking about this, it's an epic fail. At 100k's you should be able to lock up the rear and bring it to a comfortable stop... on a straight, reasonably level road.

[tigertim20]

So will he get some merit points?

Edit: Actually, thinking about this, it's an epic fail. At 100k's you should be able to lock up the rear and bring it to a comfortable stop... on a straight, reasonably level road.

Had an engine go poof on you outta the blue like that? Not so easy mate, not like putting the brakes on on purpose. By the time you realise the wheel has locked and back off the gas, pull the clutch, and your still skidding, you are well outta control.

[Finn]

Had an engine go poof on you outta the blue like that? Not so easy mate, not like putting the brakes on on purpose. By the time you realise the wheel has locked and back off the gas, pull the clutch, and your still skidding, you are well outta control.

No but I had a mate at school go poof on me. Is that the same?

Pfttt. You're not a real biker unless you've done hard time on the dirt. Otherwise you're just a commuter looking for trouble.

[MyGSXF]

Well done that man!!!!!!!!!! :first:

[JimO]

a mates norton commando did a similar thing, spat him and his wife off on a corner on the motorway

[elevenhundred]

Pfttt. You're not a real biker unless you've done hard time on the dirt. Otherwise you're just a commuter looking for trouble.

And unless you've done hard time on the road/track you are just a chook chaser looking for more chooks

[hayd3n]

that man deserves db

[xgnr]

just as well there was no Cheese Cutter to kill them both eh

[Finn]

And unless you've done hard time on the road/track you are just a chook chaser looking for more chooks

I see you've graduated from Skidmarks School of Comebacks.

[nsrpaul]

no good comes from bevel drive

[Ixion]

I bet the cop still gave him a ticket for something

[piston broke]

wtf bullshite is that.
a ceased back wheel and still go's 60m. b.s
how the hell can it take 60m to stop at 100kph,
and still fall off doing injury?
sorry i just don't get it.
strange story.


Ed:i'm sure skidmark could stop within 6 m not 60

[Mumbles]

I bet the cop still gave him a ticket for something

Maybe for littering :whistle:

[James Deuce]

Had an engine go poof on you outta the blue like that? Not so easy mate, not like putting the brakes on on purpose. By the time you realise the wheel has locked and back off the gas, pull the clutch, and your still skidding, you are well outta control.


This just highlights to me why 2-stroke motorcycles should be compulsory for learners.

[Str8 Jacket]

This just highlights to me why 2-stroke motorcycles should be compulsory for learners.

Yep, I totally agree. Not that I am a learner (now) but I have blown up more than my fair share of bikes, both on and off the track. I have been lucky enough to have never had an accident caused by a seizure. I always cover my clutch now, even on a 4 stroke!

Guess I should take Ducati off my list of possible bikes now though.... :whistle:

[Rhino]

I have been lucky enough to have never had an accident caused by a seizure. I always cover my clutch now, even on a 4 stroke!
I fully agree. I raced 2 smokers in the 70's and got very used to reefing in the clutch at the start of that dramatic power loss just prior to another seizure.:argh:

To this day I still cover both clutch and brake even on the `Wing.:yes:

[munterk6]

I had to laugh, at the end of the story it gave the info I was expecting....a DUCATI :yes:
Do
U
Care
At
The
Impact?

;)

[crazyv]

a dropped con rod which seized the transmissionCan anyone care to explain what the above means (in this story) ? What causes it?


To this day I still cover both clutch and brake even on the `WingWhat does 'cover both clutch and brake' have to do with a seized transmission?



Cheers

[98tls]

Reminds me of the TL1000 rider whos sleeping bag wrapped round the rear wheel locking it up at 100km+,totally stuffed an otherwise perfect rear tyre.

[Ixion]

What became of the sleeping bag?

[Ocean1]

Can anyone care to explain what the above means (in this story) ? What causes it?

The piston departed company from the crankshaft. The engine stopped dead, so the whole transmission did too.


What does 'cover both clutch and brake' have to do with a seized transmission?

If the above happens you pull the clutch, which disconnects the rear wheel from the engine and allows it to continue turning.

Some machines are so prone to this that their riders develop the habit of keeping their fingers on the clutch at all times. Apparently.

[piston broke]

Reminds me of the TL1000 rider whos sleeping bag wrapped round the rear wheel locking it up at 100km+,totally stuffed an otherwise perfect rear tyre.

i bet you stopped in way less than 100m

[Virago]

wtf bullshite is that.
a ceased back wheel and still go's 60m. b.s
how the hell can it take 60m to stop at 100kph...

Here we go again - Physics 101.

A motorcycle can achieve little more than 1 Gee of braking force. A rear wheel lock-up (on its own) will provide perhaps half a Gee, probably less.

At 100kph (about 28m/sec), a half-gee braking force (5m sec/sec) will take around 5.5 seconds to stop the bike, during which time the bike will travel about 75 metres.

[crazyv]

The piston departed company from the crankshaft. The engine stopped dead, so the whole transmission did too.

If the above happens you pull the clutch, which disconnects the rear wheel from the engine and allows it to continue turning.

Some machines are so prone to this that their riders develop the habit of keeping their fingers on the clutch at all times. Apparently.


I suppose the reason piston parts company with crankshaft is if there isn't enough Engine oil?

[sondela]

Maybe for littering :whistle:

Nah..was probably for loitering ;) or stopping in a no stopping zone..

I think he's just lucky he was on a Duc, any other bike falling on them probably would have killed them!

[Ixion]

The piston departed company from the crankshaft. The engine stopped dead, so the whole transmission did too.



If the above happens you pull the clutch, which disconnects the rear wheel from the engine and allows it to continue turning.

Some machines are so prone to this that their riders develop the habit of keeping their fingers on the clutch at all times. Apparently.

Well , if the transmission actually locks, pulling in the clutch will have no effect- rear wheel still locked. As for instance a broken mainshaft that locks the layshaft . DAMHIK

Unusual for a rod to lock the transmission post clutch, but can happen I guess. An advantage of pre unit construction.

A broken drive cain can lock the wheel too. So can losing the nut that secures the frame end of the drum brake reaction rod. Allowing the whole brake unit to rotate under braking, until the rod comes up against the shock absorber unit. DAMHIK.

[puddy]

Here we go again - Physics 101.

A motorcycle can achieve little more than 1 Gee of braking force. A rear wheel lock-up (on its own) will provide perhaps half a Gee, probably less.

At 100kph (about 28m/sec), a half-gee braking force (5m sec/sec) will take around 5.5 seconds to stop the bike, during which time the bike will travel about 75 metres.

Sorry!:Oops: Wrong site! Thought this was Kiwibiker!

[98tls]

What became of the sleeping bag? No idea,wasnt me.The guy pitched his tent across from us at a rally down south a few years ago,happened not far from the rally site and he was still a bit shook up/ashen faced when he arrived,to his credit he managed to keep it upright anyways.

[Ixion]

I suppose the reason piston parts company with crankshaft is if there isn't enough Engine oil?

In the case of Ducatis it probably started with a blown light bulb.

[98tls]

In the case of Ducatis it probably started with a blown light bulb. Or possibly the burden of carrying round so much more character than other motorcycles.:beer:

[Ocean1]

Or possibly the burden of carrying round so much more character than other motorcycles.:beer:

One understands Ducatis ooz character, sometimes rather faster than their owners can replentish it.

[piston broke]

Here we go again - Physics 101.

A motorcycle can achieve little more than 1 Gee of braking force. A rear wheel lock-up (on its own) will provide perhaps half a Gee, probably less.

At 100kph (about 28m/sec), a half-gee braking force (5m sec/sec) will take around 5.5 seconds to stop the bike, during which time the bike will travel about 75 metres.


maybe, but i'm damn sure i would and was on the front brake in less than 5.5 sec's and came to a halt in wayyyy less than 60m.
p.s i was only on an 80's xl125.
lesson learned,,check the oil level.

ed: if i haven't done something with the front brake within 2 sec's,it's time to stop riding

[caseye]

Main thing is they're both going to ride again! well maybe, who knows, but it's a nice change from " a motorcyclist hit a tree and died today"' and any other sort of accident involving motorcyclists, being reported by a news hungry press that doesn't care that the poor old biker got the raw end of the stick and became the meat in the sandwich.

[tigertim20]

No but I had a mate at school go poof on me. Is that the same?

Pfttt. You're not a real biker unless you've done hard time on the dirt. Otherwise you're just a commuter looking for trouble.

hard time on the dirt? did motorcross for three years, ridden dirt bikes for 12 odd years now. That enough to satisfy you?
End of the day, when something goes wrong on two wheels at 100km, its nothing short of fuckin lucky neither of them are dead.

[piston broke]

End of the day, when something goes wrong on two wheels at 100km, its nothing short of fuckin lucky neither of them are dead.

what b.s. .

[Mikkel]

Here we go again - Physics 101.

A motorcycle can achieve little more than 1 Gee of braking force. A rear wheel lock-up (on its own) will provide perhaps half a Gee, probably less.

At 100kph (about 28m/sec), a half-gee braking force (5m sec/sec) will take around 5.5 seconds to stop the bike, during which time the bike will travel about 75 metres.

Indeed, but your front brake should still be working - so you can brake harder than that. Also, a locked up rear wheel providing half a gee of braking would be rather generous I think.

As has been said, pulling the clutch might not release the rear-wheel if the internals have had a good buggering... however, if you can keep it upright for 60 meters you should be able to apply the front brake and scrub off some speed...

Also, the article only say that the bike stayed upright for 60 meters - nothing about how fast it was going when it tipped over.

Not that all of this matters - main thing is that everyone survived to ride another day.

[tigertim20]

what b.s...

yeah. sure...

[sinfull]

I suppose the reason piston parts company with crankshaft is if there isn't enough Engine oil?


In the case of Ducatis it probably started with a blown light bulb.

and ended in a lack of oil when said rod made it's way through the cases !

[Str8 Jacket]

This just highlights to me why 2-stroke motorcycles should be compulsory for learners.




What does 'cover both clutch and brake' have to do with a seized transmission?


I see your concern Jim! ;)

[bungbung]

What does 'cover both clutch and brake' have to do with a seized transmission?


I see your concern Jim! ;)

If the transmission is seized, then pulling in the clutch will do absolutely nothing

[peasea]

I know very little about Ducati motorcycles but four stroke internal combustion engines in general are something I know a bit about. I can't imagine why a broken con rod would cause a siezed transmission, unless the transmission is directly below (or closely adjacent to) the contents of the crankcase. I doubt that.

Comments have been made relating to pistons detaching themselves from crankshafts. It doesn't happen, ever. The reason is.... the piston is attached to a connnecting rod. The piston can become detached from the rod and the rod from the crankshaft but not the piston from the crank.

All things being equal and the makeup of the Duke's mechanicals being similar to most other motorcycles I'd say if the engine dropped a rod and the engine locked up then surely by pulling in the clutch you can coast to a stop with the dead engine being simply that; dead.

Moons ago I threw the rods on a 650 Triumph, both came out of the front of the cases at once. I over-revved it in 3rd gear on the Hutt M'way. I grabbed the clutch and coasted to a halt without a skidmark on the road (but a size L one in my panties). The most dangerous thing that happened was getting engine oil on the back tyre.

A broken con rod caused the trans to lock up? Hmmm. Email that to Ducati and see what they say.

Rant over.

[peasea]

If the transmission is seized, then pulling in the clutch will do absolutely nothing

Agreed, but how does a con rod sieze the trans? That's what has me flummoxed.

[tigertim20]

to be fair, we are assuming the reportergot all the details right. which doesnt happen often...

[piston broke]

to be fair, we are assuming the reporter got all the details right. which doesnt happen often...

true that .

[Leyton]

Here we go again - Physics 101.

A motorcycle can achieve little more than 1 Gee of braking force. A rear wheel lock-up (on its own) will provide perhaps half a Gee, probably less.

At 100kph (about 28m/sec), a half-gee braking force (5m sec/sec) will take around 5.5 seconds to stop the bike, during which time the bike will travel about 75 metres.

I wish I had that sort of brain :P

[Supermac Jr]

about 75 metres.

71.27m:sherlock:

[6ft5]

a box of TUI for that man - teach me how to do that !

[McJim]

Where's FJRider? [edit] Sorry - he doesn't ride a Ducati.