Thanks for offering a mature answer. Sounds like you're exactly where i am with the same issue and even found it worse with thruxtons like i did. The fuel issue is one i've considered too, but do you think it could really suck the bowl too low that quick? seems unlikely tho i don't know enough to say for sure. But this morning i went WOT from a signal at a freeway ramp, so at that point the bowls should have been as full as possible. And it cut at the top of 2nd. Seems like it couldn't drain them that fast, especially considering the flow from the tank is adding all the time. but like you i also find it happening in the firsy 2 or 3 gears mainly if not "only".
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I can't argue about the timing but I have another theory. I have the bike cutting out in first and second all the time before hitting the limiter and maybe third (can't rememeber about 3rd) but only when I start flat out hard(Ok I'm racing someone from a stand still). I have cams and big bore and I know I'm sucking some fuel. It's worse with Truxton needles. Additionally my fuel consumption has increased with Truxtons. I was getting over 140 before hitting reserve and now it's 130 or less. Don't get me wrong, the bike is strong and I have learned how far I can push it before the cut outs but it's not right. Consider what Bellacorse says about the stock pet cocks flowing 30 oz of fuel per minute as opposed to 90 for the Pingle. It works out to half ounce of fuel per second for 2 fuel bowls IF your 2 screens are perfect. That isn't a whole lot of fuel when you consider how long it takes to run through first gear. I have to figure it's 3 seconds or less, maybe 4. With 4 seconds it's 1 ounce per bowl if bellacorse is right. Maybe it's more than 4 but bottom line it doesn't seem like enough fuel for those of us that have modified for max performance. I have had my measured shots of Tequila and I just don't think it's enough.
