I've got a little project in mind, and I have no experience with designing or making camshafts.
Nope.is the project top secret???
Somewhat. People have done it to older gixxer 750's and 1000's, but it's far easier on those since it takes nothing special to hack the stock ECU.damn...somebodies done their homework lol... sounds pretty cool man.. kind of getting the best of both worlds eh?
When you get everything else to work with it, there's no problems to really be had. Hell, Ducati can change their V4's firing order at will with just swapping some electronics and the camshafts.its not all about where the bangs happen.
A lot of the low end torque from a V-twin or a cross plane inline four comes from always having a piston at full velocity while the other is stopped (in a four cylinder 2 are stopped at BDC and TDC while too are full speed at mid stroke).
this means that the weight of the pistons helps contribute to the momentum of the system, where as in a traditional 180 degree crank shaft all 4 pistons come to a dead stop, then must be started again, all the inertia to keep the engine spinning must come from the crank shaft and fly-wheel. in short this is bad for power and drive grip.
Another aspect of engine design and tuning is acoustic properties, the pressure waves inside the intake runners and air box (and exhaust) caused by the intake valve opening and closing can be used to the engines advantage by timing the high pressure portion of the wave with the intake valve opening, helping force air into the cylinder. The length of the runners and the size of the air box can be selected so that this effect is maximized at a certain RPM.
uneven firing order i4's and v-twins have pour acoustic properties because the waves inside the air box are not regular because the engine sends out a bunch of waves in a short period of time (well not really time, but crank angle) then is silent for a long time (again, more in terms of crank angle). which is why the new R1 has poor top end power when compared to the traditional engine configurations in other i4 liter bikes.
I am far from an expert in this field, but trust me when I tell you changing the firing order on your well running RR will be a world class head ache that best case scenario will give you mediocre results.
Crankshaft doesn't need to be changed out unless you're running an irregular firing order, like what only Yamaha uses. Big bang and standard firing engines run off of the same crank design, just different fuel/ignition controls and different cam shafts.Eh? How about the crank?