Quote:
1) when measuring rainfall (Chills this is all you), and it comes to .5", is that .5" over a square inch or square foot or what? is that the same area where the measure rate of rainfall, ie .2" per hour?
2) on a dyno that measures power at the wheels is there a set gear to be in or can you put in the gear ratio for what you're in to compensate? Maybe I've got it wrong and it doesn't matter but considering you pull harder in 1st than 6th I figure that would have some impact on the numbers.
3) what is the explanation for a wheelie? is it extreme weight transfer, the back wheel accelerating faster than the front and "driving through" the front? Is a power wheelie one example but a clutch up something else?
OK .... I'll bite.
RAIN
If it's rains 1 inch ..... that's 1 inch deep..... doesn't matter if you measure
a 1 inch by 1 inch area or a 1 foot by 1 foot area..... although the bigger
the measurement area the more likely the result is accurate.
You can use a funnel but then your measurement area is the size of the TOP
of the funnel. Make sense ?
DYNO
Doesn't matter what gear the bike / car is in... measurement is relative.
Lower gears have more mechanical advantage but produce less work overall.
(Torque X RPM) / 5252 = Horsepower
Horsepower is a measure of torque x speed ( distance ) and while a lower
gear can twist harder ( more torque ) it cannot spin as fast ( MPH ) therefore
it all evens out.
Most shops use 2nd or 3rd gear on a bike.
WHEELIE
When your motorcycle accelerates, the rear wheel pushes forward on the tarmac.
Every action (force) has an equal and opposite reaction.
In this case, the opposite reaction is the entire motorcycle trying to rotate
in the opposite direction around the rear axle. The only thing stopping an
instant wheelie is the force of gravity applied to the the motorcycle...
the weight of the motorcycle / rider prevents the front wheel from lifting.
When the FORCE applied to accelerate exceeds the weight on the front of
the motorcycle it begins to lift.
As it lifts the weight gets closer to the pivot ( rear axle ) and makes it easier
and easier to lift.... this is why as you approach the BALANCE POINT it
becomes easier to apply too much force and over rotate the bike and flip it.
No difference between a "power" wheelie" and a "clutch-up" except the rate
at which you apply the force.... think of the clutch up like a "snatch" lift and
the power wheelie like a "dead" lift.
Tom