Re: Need some Info.
You don't buy a "fastest" or "slowest" prop. You buy the prop that puts the wide open throttle engine rpm at or very near the top of the manufacturers recommended WOT rpm range with what you consider an average load. To make that determination you need a tachometer. For all you know you already have the "fastest" prop. Overprop (too much pitch) and you lug the engine. Under prop (too little pitch) you over rev the engine.
