Everyone knows that the stock ecu is restricted in the lower gears so a 1st gear test isn't the same test that Vic did.Vic tested 3rd and 4th..... in these gears, full throttle results will be much harder to tell a difference by seat of the pants.
Without a road marker and a timer, it will be impossible to recreate Vic's tests.
The best test without a dyno would be to datalog the mixture and the TPS, Sub TPS, and MAP sensors, then view the logs in a proper log viewer.
Ivan
I nearly stated this before but I knew it would've fallen on deaf ears. But Ivan, I know you will understand what I'm going to say. Hub might be able to understand this, but his maths are goofy. For most of the people here, I mean this with no insult, I do not expect most of you to understand what this post is going to state.
The following statement is not entirely accurate...
Without a road marker and a timer, it will be impossible to recreate Vic's tests.
Here's why...
For the following, "under normal conditions" means the bike is in perfect working order. "any gear" does not include neutral
We must accept the following are givens
1st) we must accept that from the perspective of mechanical grip, the tires are mechanically connected (have grip) with the surface they are in contact, the wheel is mechanically connected to the chain via the sprockets, the front sprocket is mechanically connected to the output shaft thus clutch, the clutch plates are mechanically connected to each other (clutch engaged and not slipping), and the clutch bastket is mechanically connected to the engine cranksaft. Given these circumstances, if the crankshaft moves the the bike must move, or if the surface moves the crankshaft must also move.
2nd) the 14R has 2 power modes, F & L. We must accept that (under normal conditions) there is an actual difference in the rate that the motorcycle will accelerate is faster in F than L. For example, if I conducted these same test in L the bike would take a longer period of time for the engine to increase rpm from 4k to 10,900.
given point 1 and 2 derives point 3) in any gear at an rpm the speed the motorcycle's speed is constant despite the power output levels of the engine. For example, (hypothetically) at 10,000 rpm in 1st gear the bike is traveling 65 mph. This is the same whether the bike's power mode is in F or L, or speedometer error. If it helps regarding speedometer error isn't a factor, let's just assume the speedometer is taped over. Percentage of throttle opening has no effect on the speed either, whether 15% or 100% open at 10,000 rpm in 1st the bike is traveling 65mph, even if at 15% the bike is not changing speed and at 100% throttle the bike is still accelerating. At x rpm in y gear, the speed is the same.
4th) we must accept speed is well understood in maths and physics. Speed is the result of a formula: speed = distance/time . We must also agree that rate of acceleration is well understood and although the formula is more complex, it exist and is still tied to time.
Ivan I'm certain at least you will have agreed with these things because they are either self-evident or proven in maths/physics. If you do not agree, please tell me in the manner you do not agree, but not that you don't believe or feel these are accurate but in the manner in which either maths or physics disagrees.
Now everyone here is stuck in the "real world" mentality, even Ivan. The world you can use your senses with. You're stating "we need to see ground markers".
Who here knows anything about piston speed? Who here knows what bore x stroke is? Who here knows how bore x stroke affects piston speed? From a physics & engineering there is a maximum feet per second pistons can travel given a rotating mass (and such and so on). Why is this? Do you see where I'm going yet?
With each stroke, a pistons travel a distance. A 14R's stroke is 65mm. If 1000 strokes have occurred, this means the piston travels 130000mm, or 130 meters, or 416.5 feet. Remember in 1 stroke the piston travels up and down, there for it's 2(D) (2 x 65)). Why is this? Do you see where I'm going yet?
5000 rpm this means 5000 strokes per minute. I can calculate at 14R's pistons speed at a given rpm for a given time. Let's take 5000 rpm the piston's speed is :
~10833 = (5000/60)(130)/1 (5000 rpm / 60 seconds x 130 (distance traveled in a stroke) divided by 1 second)
To get the distance in one minute, multiply the result by 60:
~10833(60) = ~649980mm or ~2132 feet in one minute at 5000 rpm
I do not have to observe the piston moving to know that it is traveling a distance, this is easily calculated.
So we can measure distance by not only how far the motorcycle "travels" via road marks or whatever, we can also measure the distance a piston has traveled. Or to say, the distance the piston travels directly relates to the number of rotations of the tire thus the distance covered is the same thing, whether measured in piston travel or tired rotations, or "markers on the ground".
Thus, the number of strokes required in 3rd (or any gear) gear to increase the rpm from 4,000 to 10,900 is exactly the same independent of the ECU that was installed. It is the distance the pistons must travel that matters and directly correlates to the distance the motorcycle itself covered on the ground.
This is the function of power. The engine is capable of x output of power. Therefore, two identical bikes, with everything identical, ridden identically, in the same gear, the one that produces more power will be able to cover the same distance in less time, whether it's "piston feet" or what we typically think of as a distance...two marked points. The number of piston feet traveled will be the same for both bikes. The number of tire rotations will be the same for both bikes.
Here's 100% proof. Take your bike out and record how long it takes you to cover such ground accelerating at WOT. Now, cover the same stretch of road at 1/2 throttle. Did your bike's tire rotate more times because you weren't accelerating as fast the 2nd run? NO. Did your engine spin more revolutions because you were going slower? NO.
This is the level this test was thought out to and this is the level I operate at. Again, I don't expect most or really any of you to get this. Hopefully you will. But I won't hold out hope.
* Last updated by: VicThing on 7/18/2015 @ 9:19 AM *