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Canadian Daves JustKDX
needle groove tuning question
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[QUOTE="julien_d, post: 1389060, member: 98751"] Yes, I know this. The kawi KDX needles are r1172n/r1173n. For these needles, the R11 is the taper, the 72/73 is the diameter, and the N is the L1 length. R1173n needle is a equivalent to a keihin BGP, and the r1172n needle is equivalent to a BGN needle. A small change in diameter will only really affect fuel flow over the straight section of the needle, which is roughly 1/4 throttle or less. Here's the relative fuel change when going from 1173n to 1172n needle, using same pilot/main and 5th clip position. As you can see, the difference is not what you might think it should be... [IMG]http://i23.photobucket.com/albums/b394/juliendogg/needles.jpg[/IMG] [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
needle groove tuning question
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