roadcraft site

Mad-Biker wrote:
> The NSW rta site actually has a decent ebook on roadcraft and motorcycles.
>

http://www.rta.nsw.gov.au/licensing/downloads/motorcycleridershandbook_dl1.html

--
Cheers

Andrew
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that will be it


"Andrew McKenna" <NOcmorSPAM3047.TakeThisOut@NObigpond.SPAMnet.au> wrote in message
news:2Hktj.15385$421.6235@news-server.bigpond.net.au...
> Mad-Biker wrote:
>> The NSW rta site actually has a decent ebook on roadcraft and
>> motorcycles.
>>
>
> http://www.rta.nsw.gov.au/licensing/downloads/motorcycleridershandbook_dl1.html
>
> --
> Cheers
>
> Andrew
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I have started to try clutchless gear changes after reading "The Clutchless
Gear Change"
at http://www.datacraftsystems.co.uk/techniques/techniques_left/index.html

Anyone do this?
Thoughts on the following statement?

"Advantages of the clutchless gear change is that it is quicker, smoother
and less wearing on the mechanics of the bike."

I think it is good for practice and helps keep the mind alert but not sure
on the "less wearing on the mechanics of the bike" when I do it.

:-p
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In aus.motorcycles on Sat, 16 Feb 2008 21:16:09 +1100
Peter <someone.TakeThisOut@microsoft.com> wrote:
>
> "Advantages of the clutchless gear change is that it is quicker, smoother
> and less wearing on the mechanics of the bike

Not on Guzzi's it's not. Or so people I trust tell me.

Zebee
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>"Advantages of the clutchless gear change is that it is quicker, smoother
>and less wearing on the mechanics of the bike."
that book would make good fire starter.

>I think it is good for practice and helps keep the mind alert but not sure
>on the "less wearing on the mechanics of the bike" when I do it.
Good for practicing ... what?
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Peter wrote:
>
> I have started to try clutchless gear changes after reading "The
> Clutchless Gear Change"
> at http://www.datacraftsystems.co.uk/techniques/techniques_left/index.html
>
> Anyone do this?
> Thoughts on the following statement?
>
> "Advantages of the clutchless gear change is that it is quicker,
> smoother and less wearing on the mechanics of the bike."
>
> I think it is good for practice and helps keep the mind alert but not
> sure on the "less wearing on the mechanics of the bike" when I do it.

Well, as someone once said, if it hurts, you're probably doing it wrong.

It varies from bike to bike.

IMHO, folk should at the very least try changing gears without the clutch.

Clutches can fail, and riding without the clutch working is better than
being stuck at the side of the road.

Most modern bikes will change up very smoothly and quickly, if you do it
right, and I'd tend to believe that there isn't damage being done.

regards,
CrazyCam
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"Zebee Johnstone" <zebeej RemoveThis @gmail.com> wrote in message
news:slrnfr7ros.ovg.zebeej@gmail.com...
> http://www.datacraftsystems.co.uk/techniques/index.html
>
> Interesting stuff, especially for new riders.
>
> Zebee

I have reservations about the reference to the Two Second Rule on this site.
I completed the NSW Pre-Learner's Course some time ago. They stated that
Crash Avoidance Space consisted of Reaction Time and Braking Time. They
stated that reaction time was an average of 1.5 seconds. Leaving a two
second gap allows only a 0.5 second gap in which to give yourself the space
to stop (my interpretation). You travel at 27.8 m/s at 100 km/h. A 0.5
second gap means that you have allowed only 13.9 metres to stop at 100 km/h.
May the Force be with you.

A gap of 4 seconds at 100 km/h is more realistic in my opinion. A three
second gap means that you will have to stop from 100 km/h in 42 metres.
This is a 0.94g stop. Allow a 3 second gap if you can reliably do 0.94g
stops, otherwise allow a 4 second gap at 100 km/h.

48% of all collisions in the ACT are rear enders.

What any rider does is up to him or her.

John Dwyer.
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On Sun, 17 Feb 2008 08:12:20 +1100, "John Dwyer"
<dwyerjd DeleteThis @netspeed.com.au> wrote:

>
>"Zebee Johnstone" <zebeej DeleteThis @gmail.com> wrote in message
>news:slrnfr7ros.ovg.zebeej@gmail.com...
>> http://www.datacraftsystems.co.uk/techniques/index.html
>>
>> Interesting stuff, especially for new riders.
>>
>> Zebee
>
>I have reservations about the reference to the Two Second Rule on this site.
>I completed the NSW Pre-Learner's Course some time ago. They stated that
>Crash Avoidance Space consisted of Reaction Time and Braking Time. They
>stated that reaction time was an average of 1.5 seconds. Leaving a two
>second gap allows only a 0.5 second gap in which to give yourself the space
>to stop (my interpretation). You travel at 27.8 m/s at 100 km/h. A 0.5
>second gap means that you have allowed only 13.9 metres to stop at 100 km/h.
>May the Force be with you.
>
>A gap of 4 seconds at 100 km/h is more realistic in my opinion. A three
>second gap means that you will have to stop from 100 km/h in 42 metres.
>This is a 0.94g stop. Allow a 3 second gap if you can reliably do 0.94g
>stops, otherwise allow a 4 second gap at 100 km/h.
>
>48% of all collisions in the ACT are rear enders.
>
>What any rider does is up to him or her.
>
>John Dwyer.

I know what you mean, but if you look on the road and see how many
people actually are two seconds behind someone, I'd just love to see
two seconds come in. The practicality of getting people to four
seconds is gunna be damn near impossible. Us human beans are impatient
buggers.
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>
> Not on Guzzi's it's not. Or so people I trust tell me.
>
> Zebee

Shafted Guzzis I think have a direct connection from crankshaft to
gearbox input shaft, so the gears spin faster than on bikes with primary
reduction gearing. That gives characteristic clunky change, and less
time for gear selection dogs to do their stuff.

Clutchless changes should only be done when there's no torque being
transmitted from the engine to gearbox, say by closing the throttle.
Otherwise there's chance of metal distress to gear dogs.
Then it's a race between the selector parts acting to change gear (foot
movement), and the "next hole" available (designed-in backlash) at the
selector dogs.

One way to try is to have some force on the pedal, not so much as to
change gear with throttle open, but enough to effect movement when
throttle's closed.

Instead of closing throttle, another way to kill torque is to have an
ignition kill switch, perhaps synchronised to act with initial movement
of pedal.
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So put it up a gear AND cut the motor off at the same time ? Be an
interesting stall..

Jordan wrote:
>>
>> Not on Guzzi's it's not. Or so people I trust tell me.
>>
>> Zebee
>
> Shafted Guzzis I think have a direct connection from crankshaft to
> gearbox input shaft, so the gears spin faster than on bikes with primary
> reduction gearing. That gives characteristic clunky change, and less
> time for gear selection dogs to do their stuff.
>
> Clutchless changes should only be done when there's no torque being
> transmitted from the engine to gearbox, say by closing the throttle.
> Otherwise there's chance of metal distress to gear dogs.
> Then it's a race between the selector parts acting to change gear (foot
> movement), and the "next hole" available (designed-in backlash) at the
> selector dogs.
>
> One way to try is to have some force on the pedal, not so much as to
> change gear with throttle open, but enough to effect movement when
> throttle's closed.
>
> Instead of closing throttle, another way to kill torque is to have an
> ignition kill switch, perhaps synchronised to act with initial movement
> of pedal.
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John Dwyer wrote:
> "Zebee Johnstone" <zebeej.RemoveThis@gmail.com> wrote in message
> news:slrnfr7ros.ovg.zebeej@gmail.com...
>> http://www.datacraftsystems.co.uk/techniques/index.html
>>
>> Interesting stuff, especially for new riders.
>>
>> Zebee
>
> I have reservations about the reference to the Two Second Rule on this site.
> I completed the NSW Pre-Learner's Course some time ago. They stated that
> Crash Avoidance Space consisted of Reaction Time and Braking Time. They
> stated that reaction time was an average of 1.5 seconds. Leaving a two
> second gap allows only a 0.5 second gap in which to give yourself the space
> to stop (my interpretation). You travel at 27.8 m/s at 100 km/h. A 0.5
> second gap means that you have allowed only 13.9 metres to stop at 100 km/h.
> May the Force be with you.

I think you've oversimplified. Don't forget that you are following a
vehicle who also will take time to come to a stop. You don't only have
the immediate gap between you and he, you also have that extra space
taken for him to come to stop. A two second gap is more than adequate
for those with average reaction times and reasonable stopping skills.

As it is, a 2 second gap is taken up by people merging, thus putting you
in a position of having to drop back even further to maintain that 2
second gap, which opens up a slot for someone else to merge and........

Having said all that, if road/weather conditions are a problem, I do
tend to drop back even further.
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On Sat, 16 Feb 2008 21:16:09 +1100, "Peter" <someone.RemoveThis@microsoft.com>
wrote:

>
>I have started to try clutchless gear changes after reading "The Clutchless
>Gear Change"
>at http://www.datacraftsystems.co.uk/techniques/techniques_left/index.html
>
>Anyone do this?
>Thoughts on the following statement?
>
>"Advantages of the clutchless gear change is that it is quicker, smoother
>and less wearing on the mechanics of the bike."
>
>I think it is good for practice and helps keep the mind alert but not sure
>on the "less wearing on the mechanics of the bike" when I do it.
>
>:-p
Maybe someone should show that URL to the major manufacturers. It
would save them heaps not having to put a clutch in.

Johno <it can be done, but why do it?>
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Yeebers wrote:
>> Instead of closing throttle, another way to kill torque is to have an
>> ignition kill switch, perhaps synchronised to act with initial
>> movement of pedal.

Oh yes, forgot to say: momentary switch!
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