golden eagle system, 14tooth drivegear, 60lb bicycle/195lb rider...topend of 37mph...
tanaka 32cc purefire, upgraded to 12mm carby (from 10mm) & boost-bottle. stock crank and porting. E3 spark plug and tuned stinger extension (on stock converter/muffler) are pending.
the main reason for the carby-upgrade was tunabilty, as it has the high-rev mixture screw available...when the rear wheel is off the ground (no load) i can make it scream in either a lean or rich condition, but under load neither (extreme) setting will pull worth a dang. i'm hoping the E3 plug will help me with that.
with no gearing, the engine has to be kicked in by the time i've pedal-assisted up to 20mph, and it has to be tuned to achieve maximum rpm from there...i have a mile to reach topend, but it doesn't seem as if i need that much room.
so, what should i do? i added a piece of tubing to the screw so i can adjust mixture while running under load, but i'm noticing no real bump in maximum performance, there seems to be only one setting that makes it right for all conditions.
am i missing something or am i just going to have to admit i've hit the ceiling for this engine? is the boost-bottle (which is about 1/3 too large by volume) affecting topend?
i look forward to some serious discussion about carby-settings, boost-bottle, possible high-perf fuel...no need to tell me to start shaving metal off, no internal mods will be done on this engine...remember i need to be able to road-ride this when i'm finished racing, i can't be blowing it up...thanks
tanaka 32cc purefire, upgraded to 12mm carby (from 10mm) & boost-bottle. stock crank and porting. E3 spark plug and tuned stinger extension (on stock converter/muffler) are pending.
the main reason for the carby-upgrade was tunabilty, as it has the high-rev mixture screw available...when the rear wheel is off the ground (no load) i can make it scream in either a lean or rich condition, but under load neither (extreme) setting will pull worth a dang. i'm hoping the E3 plug will help me with that.
with no gearing, the engine has to be kicked in by the time i've pedal-assisted up to 20mph, and it has to be tuned to achieve maximum rpm from there...i have a mile to reach topend, but it doesn't seem as if i need that much room.
so, what should i do? i added a piece of tubing to the screw so i can adjust mixture while running under load, but i'm noticing no real bump in maximum performance, there seems to be only one setting that makes it right for all conditions.
am i missing something or am i just going to have to admit i've hit the ceiling for this engine? is the boost-bottle (which is about 1/3 too large by volume) affecting topend?
i look forward to some serious discussion about carby-settings, boost-bottle, possible high-perf fuel...no need to tell me to start shaving metal off, no internal mods will be done on this engine...remember i need to be able to road-ride this when i'm finished racing, i can't be blowing it up...thanks
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