"Skill saves motorcyclists"

[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....

[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.

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

[munterk6]

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

[crazyv]

a dropped con rod which seized the transmission

Can 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 `Wing

What 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

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! 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.