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PostPosted: Fri Mar 03, 2006 18:47 
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Mole wrote:
Absolutely! Interestingly, I went to a talk a while back on vehicle dynamics given by a respected professor in that field and during discussions afterwards, he abslutely refused to believe this! Unfortunately, I could only comment from experience rather than mathematically show what I meant but ever since then I've made a point of asking all sorts of people from club racing drivers down to housewives and it is pretty much universally accepted that steering goes light just before you go off into the scenery!


If you notice the steering going light, the hope is that you can still avoid the scenery! Otherwise :yesyes:

Professors eh? :no:

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PostPosted: Fri Mar 03, 2006 18:53 
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[quote="SafeSpeed
If you notice the steering going light, the hope is that you can still avoid the scenery! Otherwise :yesyes:

Professors eh? :no:[/quote]

Just posted on one of Oscars , same topic- despite outside temp guage , i still prefer sticking my hand out to gauge external temp.Found over years an aid to meeting scenery.

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PostPosted: Fri Mar 03, 2006 20:20 
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SafeSpeed wrote:
Lateral inclination is called camber not kingpin inclination.

..


No, trust me on this one!

We're talking about inclination of the steering axis here, not the wheel. It really is called "kingpin inclination"! You can have camber with no kingpin inclination and kingpin inclination with positive, negative or no camber at all.

Is there a way of posting pictures on here? I've got a few diagrams I could scan which should illustrate what I'm trying to say.


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PostPosted: Fri Mar 03, 2006 20:23 
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SafeSpeed wrote:
Mole wrote:

I think that the self-centring tendency that the driver feels is a combination of castor and pneumatic trail. The latter changes with grip but is a fairly small force - far too small to be used by itself especially with the modern trend for very highly assisted steering. The former is the bigger force but would still happen whether you had any grip or not so it's confusing.


Lateral inclination is called camber not kingpin inclination.


The major restorative force comes from castor. If you have any doubts try the vehicle in reverse - castor will give you full lock in a flash if you dare to release the wheel...

..


We agree on that point (castor being the main self-centring factor) but I'm not sure we're visualising "castor" in the same way!


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PostPosted: Fri Mar 03, 2006 21:56 
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Mole wrote:
SafeSpeed wrote:
Lateral inclination is called camber not kingpin inclination.

..


No, trust me on this one!


yup i'm afraid he's got it right.
camber is the wheel itself.

castor & KIA refer to the steering axis. (or dare i say it.. king-pin... think horse & cart)

..oh and who was the respected prefessor?... someone i know perhaps?


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PostPosted: Fri Mar 03, 2006 22:14 
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Dave Kroller from Leeds Uni!


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PostPosted: Fri Mar 03, 2006 23:02 
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ah.. the famous ... crolla.

nuff said :wink:


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PostPosted: Sat Mar 04, 2006 00:17 
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OK, so I can't spell either!!!

Anyway, getting back on-topic, I've just suffered from an attack of micro-climate!

I set of at 5.00 to get our little monster from the nursery and the roads were dry. 2 miles later, they were so slippy I ended up getting completely stuck on a slope that took three blokes, my own engine spinning the wheels furiously and a landrover half an hour to heave me back up!

I called my wife to ask her if she could pick said monster up (as she was just a few miles South of where I was) and she said the roads were fine there and coudn't understand why I was making all this fuss!

I love micro-climates, me!


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PostPosted: Sat Mar 04, 2006 00:58 
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According to the radio today, Allonby was shutting their school due to 3 inches of snow and treacherous driving conditions - and two and a half miles away at Maryport they had....NONE!

According to reports, Windermere and Kendal were worst affected - but I went from Staveley to Kendal twice, and Kendal was nowhere near as bad!! :lol: :o

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PostPosted: Sat Mar 04, 2006 11:35 
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Try being a biker in Narnia- always winter, never Christmas. Rotten.


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PostPosted: Sun Mar 05, 2006 05:57 
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Since the water + northern hemisphere + facing north
are all evidence of these blackspots, can potential
spots be predicted where maybe there are currently
no signs?

One person I know told me that his grandads
neighborhood had a road going downhill and
went right at the bottom, but directly at the
bottom was a 40ft embankment onto a disused
railway line. There were no barriers, signs, bollards
there at all and for ten years the residents had
warned about the potential danger. Alas, a car
had to go skidding down the embankment before
the council did anything. It is understandable there
being a budget and everything but in some cases,
there does not need to be an accident, you just know,
even if it takes ten years, at some point, one icy winter...

So it is reporting potential accidents.

For instance the narrow lanes on the M60 were made
to be narrow. This I am sure, along with the bend and
slip road joining the motorway is no wonder there are
always accidents there. That I am sure is dangerous
because of such narrow lanes but, each to their own.
I mean, its would be a silly case since the people you
would argue against are the people who narowed the
lanes down yes? Hmmmmm...


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