I dunno that the RC Components wheel is 'costing you HP.' If weight was 'bad' then why don't all crankshafts have very low-weight counterweights? Because they balance against the reciprocating parts above them, and they help to smooth the power impulses. Also, the inherent imbalance of a particular design of engine, including the #/cylinders, the spacing of the pistons relative to one another, measured in degrees, the firing order ('cross-plane' crankshafts used by Yamaha and now Ford, besides Ferrari) the rev limit of the engine, the use to which it's going to be put, all affect the design considerations. I think Sean has pointed out multiple times that a 9K redline or thereabouts produces sufficient HP to have fun at the track, and allows the engine to live. If you run higher rpm's then your entire engine is stressed beyond its design parameters, and modifying it to live at higher revs is an expensive proposition. Pretty-much everything needs to be 'touched,' depending on what additional rev capacity you want. We already know the #3 big end rod is prone to oil-related failure. Running the engine higher is going to make that moment when the engine has a failure, come sooner than if you use a rev-limiter and save yourself the expense of rebuilding an engine.
Look at the Morley's Muscle build sheets in excel, and see what's involved in getting to the point of big increases over stock. To make it live, there are many associated parts and machining procedures. If you want to 'go Big,' then spend the $$$ to do it right, and don't think that spinning the engine higher is 'free HP,' because it will cost you dearly in the long (or perhaps 'short!') run.
http://www.vmaxforum.net/showthread.php?t=21873&highlight=dyno+dilemma
I'm sure you are probably familiar w/most if not all of this, but there are many members on here who may not have much experience in bikes, and who think that, "if he's running to 10,000 rpm, then
I can run to 11,000 rpm to make more HP!" They will soon find themselves faced w/a repair bill for engine work >the value of their bike.
If you were going to be like Bill Werner and to go the Bonneville, then that heavy rear wheel would probably assist you in getting the power to the ground, given the notorious nature of the traction limitation to be found in UT.
One of the ideas for increasing mileage in vehicles is the use of a flywheel energy storage system. These have a potential for storing prodigious amounts of energy, and in 'feeding it back' into the drivetrain. Unfortunately, they also have a potential for tremendous damage since they may spin at 100,000 rpm. They require heavy protection to safely operate and to not come adrift in the event of an accident. Think of those wheel/balls in the movie "Battleship," cutting thru the US Navy vessels.
Anyway, the path to extending your redline is neither easy, nor cheap, and you may not be happy w/how things turn out, in use, unless you go all the way w/the required modifications.
I'd just go buy a Gen II and save myself a lot of time money and aggravation.
