slow_honda;107567 wrote: What is the stability on an open container? Typical race fuels have an opened container life span of 4 weeks or less. Can this be kept in the fuel system for extended periods? And does the performance stay consistent in an open container over time?
Mr Honda,
The previous post has our spec sheet attached to it. For the benefit of all reading this thread, I will answer your question by explaining the spec sheet. This will help you compare our fuel to other race fuels. For comparison sake I will use VP's U4.2 because we both claim similar performance numbers.
The distillation points refer to temperatures and rates where fuel burns away. The three points 10, 50 and 90% relate to specific functions of the fuel. 10%, the part that burns first, is mainly for cold starting, 50% is for warmup, and the 90% is what makes good power and mileage. EP is the end point (100%)
Reid Vapor Pressure describes how easily liquid fuel turns to burnable vapor. In comparison, VP's U4.2 is 6.32, BioWeapon is 8.8. This is one way BioWeapon makes power and reduces HydroCarbons in the exhaust at the same time.
Research octane number and motor octane number describe resistance to predetonation. Research is a lab derived number where as motor actually uses a special test motor to determine knock points. The octane that most refer to is PON (pump octane number)which is simply the average of the two. BioWeapon's PON is 93.3, VP'S U4.2 is 105. BioWeapon was specifically formulated to stay at 93 allowing it's power gains to be reaolized with little or no custom maping of fuel systems or engingine tuning. It takes a great deal of modification to truely take advantage of 105 octane and or oxygenated fuel. Staying at 93 also lets riders switch back and forth from pump gas without re-tuning.
Oxidation Stability. Here in lies the answer to your question. This describes how the fuel reacts when exposed to open air. BioWeapon has a very good oxidation stability, especially when compared to oxygenated fuels. In the big picure of fuel turning bad, EP and Reid Vapor Pressure come in to play here as well. Even though no fuel likes to sit in open air, the difference between BioWeapon and U4.2 is there is no need to drain your tank after use BW, or dispose of month old fuel.
Finally, the gravity measurements are the relative weight and density of fuel compared to water. Typically heaver fuels get better mileage.
I hope this helps everyone understand the gist of fuel spec. The descriptions I offer here are simplified versions of what are all debateable and complicated points. If anyone needs more specific information in more depth, P/M me and I will put you in contact with our chemist.
). Even seemed to have decent throttle reponse once it warm up. I may save the rest until Barber!
