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Old 03-05-2008
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86lt250r

 
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If you are considering anything, you may want to try butanol. It has a higher octane number than methanol (113 to 107). The advantage of methanol is that it can accept a higher compression ratio. If butanol can take the high compression, than it may be a good alternative source. I believe the higher octane number indicates it can take higher compression.

Heats of combustion: (energy released per gram)
Methanol - 5.4 kcal/g
Ethanol - 7.2
Butanol - 8.8
gas - 11.3
Nitromethane - 11.22

Another factor is the oxygen content. Methanol 50%, Butanol 22%, Nitromethane 52.4%. The more oxygen, the higher the fuel/air ratio and the more fuel the cylinder can take per stroke. The combination of a high heat of combustion and high fuel/air ratio make nitro the best fuel. The butanol may require too much oxygen to create decent power, but it may be worth a try.
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88 250r
Motor - 4mm stroker mx ported, Sparks pipe, 38mm AS, v force reeds, Hinson basket w/ Barnett plates
Chassis - PRD narrow frame, Janssen +3 arms, Ohlins LT big bodies, cr500 link Walsh swing arm, Ohlins rear shock, LSR axle, Denton stabilizer, AC propegs

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