Joe:
Gee, I didn't know that Keith and Glen eat cats.
Russ, #1226B
-----Original Message-----
From: Joe Amo [mailto:jkamo@rap.midco.net]
Sent: Tuesday, December 31, 2002 5:31 PM
To: Russel Mack
Cc: Glen Barrett; landspeed@autox.team.net
Subject: Re: ON THE ROAD
So what your saying is: narrow tires would work good
on the slippery surface of the salt (as opposed to wide tires),
and that TC would make land speed racing safer and better,
and Keith and Glen B. should have a first
name starting with "P"
thanks for clearing these things up for us :)
Joe
Russel Mack wrote:
>Joe:
>can't say I am SURE of the answers to all your musings, but I'll offer my
>2c:
>
>you said...
>Why is it that narrow tires work a hell
>of alot better than wide tires
>on the slippery non wet road surfaces of winter???
>
>I see two possible contributing factors:
>-- the long, narrow contact patch of narrow tires makes the bike like to go
>straight (as opposed to a wider contact patch liking to turn). Ice offers
a
>lower coefficient of friction than typical road surface, therefore a
>tendency to oversteer and understeer; the long contact patches resist that.
>-- narrow tires typically offer more sidewall resistance (less flex) than
>wide tires for the same load, because there is more sidewall rubber along
>the length of the contact patch. Therefore-- for the same mass-loading of
>the tire (and same tire inflation pressure), a narrow tire will have a
>slightly SMALLER contact patch than a wide tire. Since you have the same
>load on a smaller contact patch, you will have more pounds-per-square-inch
>exerted on the contact patch, which provides a greater friction force (more
>grip).
>
>you said...
>why is it that cars stop faster and straighter on
>ice by using modern electronics to take control of
>an important function like braking??
>
>When brakes are applied on slippery surfaces (like ice), too much braking
>force tends to lock-up the wheels with the least traction. A tire on a
>locked-up wheel is operating in the "sliding-friction" regime, which means
>it has less grip than a rolling tire. This means that any tires that
>haven't "locked-up" are usually not getting as much braking force as they
>could use, because other tires are sliding and the operator must decrease
>the braking pressure. Modern braking electronics can do two things:
>-- they "pulse" the brake pressure very rapidly, so that the tires don't
>stay in the "sliding-friction" (skidding) regime but tiny fractions of a
>second, and...
>-- (some)sense wheelspeed, and apply more braking power to the wheels that
>are moving the fastest, and less to wheels that are beginning to lock.
>
>(Of course, TC works just about the same way.)
>
>you said...
>Why is it that cat taste like chicken?
>
>-- you are what you eat. Many cats (including mine) eat lots of chicken.
>Note that consumption of cats can make a pussy out of you! You are what
you
>eat.
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