wamanning DeleteThis @email.com wrote:
>"then i check out some sport-bikes, and the positions w/ the clip-ons
>feels...right. very natural,
>my weight over the bike, i'm involved and feel in control."
ergonomics: Design factors, as for the workplace, intended to maximize
productivity by minimizing operator fatigue and discomfort.
What's you idea of a motorcycle ride? Do you want to ride for half an hour,
going as fast as you can, or do you really want all day ergos?
Motorcyclist or Sport Rider magazine used to publish photos with ergo
dimensions laid over the motorcycle in an inverted triangle.
The base of the triangle was almost the almost horizontal seat line, rising
only slightly to the level of the handlebars in uncomfortable sportbikes.
The ergo triangle was dimensioned. A motorcycle had uncomfortable ergonomics
is the average rider had a long reach to the handlebars, or they weren't much
higher than his butt.
The ergo triangle didn't necessarily follow the angle of the seat, but some
sportbikes have steeply angled seats that cause the rider's family jewels to
slide down against the gas tank on a regular basis.
A vertical line descended to the footpegs. The dimension from a rider's knee
to the sole of his boot needs to be 18 inches or thereabouts so the rider's
leg wouldn't have to be bent upward from the hip.
A Ricky Racer who rides on the highway like he rides on a race track would
like the footpegs to be as high as possible so he can raise his butt off the
seat and slide back and forth across it as he went through a series of ess
curves.
Most casual riders would find this high footpeg position *ergonomically*
tortuous.
I lowered the foot pegs on both of my sportbikes an inch or two in order to
straighten my legs out.
The third line of the ergonomic triangle is the hypotenuse, running from
handlebar to footpeg. If the footpegs are high and far back, the rider's leg
is bent and this may cut off circulation.
But Ricky Racer doesn't care about that, he puts the ball of his foot on the
foot peg instead of keeping his foot in position to operate the brake pedal
and the
shift lever.
The Ricky Racer's idea is to use all of the lean angle the motorcycle is
capable of, without grinding his toes off.
The first ergonomically uncomfortable sportbikes of the mid-1980's led many
riders to question whether they really wanted cornering performance that
turned the motorcycle into a torture rack in half an hour of vigorous riding.
Sport touring motorcycles with less extreme ergonomics began to appear.
The Honda VFR750 and VFR800 and Suzuki's second Katana series and the RF
series were examples of more ergonomically comfortable sport tourers.
--
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http://www.motorcyclekb.com/Uwe/Forums.aspx/tech/200710/1 >> Stay informed about: returning motorcyclist > questions about ergos 
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