The number of clip stages for JN jet needles is listed as #1 = 1st stage from the top. The top is the end where you attach the clip. It also includes taper angle and cut-up. The tapered side is on the bottom. The part number is different for large body and small body.
FCR FCR tuning - If you make the jet needle straight diameter lean, it may be pointless to make the jet rich......
This is a description from the history of CBX1000 FCR tuning. It may not be useful, but if you intentionally unbalance the jet, you can use a jet that you can't use. In particular, the CBX1000 tends to run out of clip stages.
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FCR FCR Tuning - Jet Search Order from Initial Tuning...
I received an email asking about the FCR of a CBX1000. I'm an amateur, but I try to provide information diligently in my own way. I'm not doing this commercially, but I'm very happy when I get a reaction from the web. This time, I'll write about the order in which you should tune the FCR from the factory.
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FCR FCR setting - proper air screw value...
I think the proper way to return the air screw is about 1.5 turns. When I first started playing with the CBX1000 FCR, I changed the slow jet a lot. When I didn't know how to tune it, I just changed everything I could get my hands on. Now I'm trying to avoid changing the SJ as much as possible.
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FCR Selecting a jet needle for the CBX1000 FCR model - I want to choose something other than the 90FXM...
The current CBX1000 FCR jet needle shipped by BITO is apparently 90FXM#3. I called to ask. The 90FXM has a special cut-out with an [X]. Normally it's [T]. I don't want to change the taper angle, but I'd like to change the straight diameter in various ways, but there are no options.
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FCR FCR Tuning - Throttle opening 1/16 determined by straight diameter and slow jet...
This is a story about when I used a jet needle that I bought a few years ago for setting the FCR of my CBX1000 but hardly used. The other day, I looked back at the past logs about the changes in the straight diameter of the SJ and JN. My experience is different from that of my past self, so the accuracy and precision of what I have written down will be different.
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FCR Installing an FCR on a CBX1000! 10 points to consider when starting serious tuning...
This article is aimed at people who want to start tuning up their FCR in earnest. It covers carburetor synchronization and tuning.
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Manual Buying a CBX1000 FCR - How to tune for the first time...
Many people want to install a racing carburetor on the CBX1000. In Japan,the options are the BITO FCR or CRS carburetor. It seems that TMR can also be made to order,but it is not common. If I were to buy one,I would choose the FCR.
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FCR FCR tuning - Jet needle changed to 90FTN. I was concerned about the straight diameter - 22/11/15...
This is a test run after changing the jet needle of the CBX1000 FCR. The purpose is to check whether the straight diameter of the jet needle is good or bad at low throttle opening. I have been selecting a jet needle for the slow jet 48 for a while now. As a result of the test run,the acceleration is so good that I don't want to touch it for a while.
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FCR FCR tuning-Jet needle replacement-Up change-22/11/08...
This is the FCR tuning. Current jet needles have a special thread count that sharpens up. It should be 90FXM#3=90FTM#1. I haven't tried it,so I don't know,but it should probably be the same. I'll check it out when I have some free time.
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FCR FCR Tuning - Tuning throttle opening from 1/16 to 1/8 - 22/11/06...
Regarding the current FCR tuning of CBX1000,I was concerned about the lower throttle opening. It's not a good idea to get caught up in the air-fuel ratio meter,but a partial reading of 10.5 is around throttle opening of 1/16 to 1/8. It is unclear whether this condition is good or bad.
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