Well, that didn't work*.
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anonymous.shyster post that should still be here;
There would be absolutely no reason to remove the power jet when removing the oil injection, or vise versa. Both could be done on their own, however, when removing the oil injection you'd want to go up a size in the mains because of the premix metering. That's how I understand it anyway.
As for the air solenoids? I know one hose goes from the X piece to the airbox... it seems as if without an airbox, it would lose its home! Which may require moving over to the HRC setup (power jet removed, bigger mains)...
So, when are there going to be more of the NSR world HRC style open air boxes up for grabs?
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Neal post that should still be here;
Great response , if my understanding about ram air is correct - as the carbs become pressurized the fuel inside them is too and this equal pressure keeps the jetting the same as before the ramair
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NSR-lizard that should still be here;
As anonymous.shyster says, power jets can be run with the oil pump or premix, if you so choose. The issue with switching to premix is that you effectively weaken the mixture for a given jet size. The power jets are progressive which means (in simplistic terms) that the higher the RPM the richer they fuel, so running pre-mix through them could run the risk of running leaner (read 'running in a leaner bracket') at the top-end.*
Tuning a mechanically progressive system (PWJ's) isn`t easy, and the system isn't particularly efficient, hence why HRC uses only the mains to meter wide open throttle. Power jets are 'safe' on a road bike, or even a trackday bike, where for reliability and longevity are helped by an increasingly rich mixture as the revs rise, but it's far from ideal when racing.
*As noted, the PWJ system gets progressively richer, to a point where it becomes too rich. Running pre-mix through them, and effectively leaning the circuit off, may actually be beneficial in some situations. Using ramair for example, could benefit from the additional enriching at the very top down a long straight.
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Apart from that, children stop sniping at each other, this is not Crash.net.
Yes Hermit's post was inaccurate, yes NSR-lizards "really" was a bit sarcastic, after that it all gets a bit silly there's no need to swear and no need to get personal...any of you.
*a topic split with multiple individual replies moved out of the thread. Replies are never deleted, they're moved to an admin section.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread
Last edited by fontyyy on Wed Jul 20, 2011 12:40 am; edited 1 time in total