10-29-2013, 03:37 AM
A motorcycle magazine. They are all mostly full of crap, just like Internet forums. 
That sounds like the article about the FZ-09 in Cycle World where they say its design is a result of "trickle-down" MotoGP technology. Yes, please show me the MotoGP bike with a two-piece frame that bolts together at the steering head.
That comment from MCN is pure nonsense. Airplane engines are swinging in the breeze getting cooled by the air blast at say, 90 mph cruising speed for a light single-engine, four-cylinder trainer (C172SP, let's say). They can do this day and night for hours on end, year in and year out. If this air-cooled engine in our bike is blasting down the road at unlimited top speed, say, 130 mph, it's getting a tremendous amount of cooling air so engine cooling is a zero, zip, nada, non-issue cubed. Also, how long would someone reasonably be able to sustain 130 mph without slowing down? Not long on a public road. If someone wants to go to the Bonneville Salt flats and try for a land speed record, they can just unplug the speed sensor, so no worries there.
The cooling issue arises when an air-cooled bike is sitting in traffic, not moving or barely moving, for long periods of time, not when the bike is hauling ass in a 100 mph+ windblast. Harley had/has a system that actually cuts spark to the rear cylinder when it starts to overheat in traffic. It works. It never activates when the bike is actually underway at any kind of normal road speed.
dang i hate those magazines sometime
A light aircraft engine? Ok. So what's the temperature of the air at cruising altitude? Chances are good that we're talking essentially refrigerator air - it's cold out there! Even freezing. Those (horizontally opposed) 4-cylinders are all seperated from each other & finned all the way around - not siamiesed like the CB1100. Other than the fact that both are air cooled - apples and oranges IMHO.
~ The Bee
That sounds like the article about the FZ-09 in Cycle World where they say its design is a result of "trickle-down" MotoGP technology. Yes, please show me the MotoGP bike with a two-piece frame that bolts together at the steering head.That comment from MCN is pure nonsense. Airplane engines are swinging in the breeze getting cooled by the air blast at say, 90 mph cruising speed for a light single-engine, four-cylinder trainer (C172SP, let's say). They can do this day and night for hours on end, year in and year out. If this air-cooled engine in our bike is blasting down the road at unlimited top speed, say, 130 mph, it's getting a tremendous amount of cooling air so engine cooling is a zero, zip, nada, non-issue cubed. Also, how long would someone reasonably be able to sustain 130 mph without slowing down? Not long on a public road. If someone wants to go to the Bonneville Salt flats and try for a land speed record, they can just unplug the speed sensor, so no worries there.
The cooling issue arises when an air-cooled bike is sitting in traffic, not moving or barely moving, for long periods of time, not when the bike is hauling ass in a 100 mph+ windblast. Harley had/has a system that actually cuts spark to the rear cylinder when it starts to overheat in traffic. It works. It never activates when the bike is actually underway at any kind of normal road speed.
dang i hate those magazines sometime
A light aircraft engine? Ok. So what's the temperature of the air at cruising altitude? Chances are good that we're talking essentially refrigerator air - it's cold out there! Even freezing. Those (horizontally opposed) 4-cylinders are all seperated from each other & finned all the way around - not siamiesed like the CB1100. Other than the fact that both are air cooled - apples and oranges IMHO.
~ The Bee