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Old 05-19-2013, 10:00 PM   #1
JTS1 OP
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Flexjet

Getting mixed reviews from dealers and mechanics on compatibility of flexjet adjusters. Are the ones sold for the 950's just a pair of the same ones sold for say the KTM 500 or 690? Someone told me that R&D on makes one adjuster.
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Old 05-19-2013, 10:50 PM   #2
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Originally Posted by JTS1 View Post
Getting mixed reviews from dealers and mechanics on compatibility of flexjet adjusters. Are the ones sold for the 950's just a pair of the same ones sold for say the KTM 500 or 690? Someone told me that R&D on makes one adjuster.
Someone lied. Probably they just didn't know. There is a Flexjet 2. Has 2 included with grommets for your airbox. Longer than the other's also. Depending on where people are looking, some supplier's catalog only lists one.
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Old 05-20-2013, 07:34 AM   #3
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Do you think the needles are the same? Thx
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Old 05-20-2013, 09:06 AM   #4
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If you buy them from Advmachines, you'll get everything you need, including where you need to drill holes in the airbox for the FlexJets and separate vent hoses.

http://www.advmachines.com/product_p/jp_flex2.htm
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Old 05-20-2013, 03:31 PM   #5
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Thx, Ordered set from CJ Designs.
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Old 05-20-2013, 10:18 PM   #6
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Do you think the needles are the same? Thx
Sounds like you got it all figured out. Unless someone has already made changes the stock needle is usually used for the stock airbox, with or without a pre-filter. You may need to adjust the clip position.

CJDesigns and Ken at ADVMachines NW both sell ADVMachines jet kits. They work very well. If you have the Rottweiler intake system Ken has designed a package that includes not just the appropriate jets but the correct needles as well.

I only know this because I've re-jetted 3 different 950s in the past couple of weeks.
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Old 05-20-2013, 10:58 PM   #7
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Okay ,Stupid question time

What do Flex jets do and why do you need them?

Thanks
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Old 05-21-2013, 11:32 AM   #8
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What do Flex jets do and why do you need them?

Thanks
They allow you to adjust your idle mixture without having to disassemble your entire motorcycle.

Whether you need them depends on how much you like wrenching.
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Old 05-21-2013, 02:52 PM   #9
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They allow you to adjust your idle mixture without having to disassemble your entire motorcycle.

Whether you need them depends on how much you like wrenching.
To add to that it is for elevation changes when you ride up in the heavens thus you can bring the mixture back into line with the reduced air density so making it run nicely and not very rich and choking the poor old girl .
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Old 05-21-2013, 03:18 PM   #10
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I have FlexJet 2s and love them. When I ride from my normal 900' elevation to Denver, I can just turn down the mix about 1/4 turn to settle the idle right down. One thing that you might consider is that vibration can cause the Flex Jet 2s to unscrew, so you have to secure them so that this doesn't happen. I had mine loosely held down during a trip this past weekend, and one of the two screws unscrewed out about a full turn during the trip. Had the thing unscrewed entirely, I would probably still be sitting in West Union, Iowa scratching my head as to how to fix it. So, just make sure they are held down very well.
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Old 05-21-2013, 04:59 PM   #11
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...
One thing that you might consider is that vibration can cause the Flex Jet 2s to unscrew....
For a hundred smakaroos, you'd think they could make something that would hold a setting.

I think I'm glad I didn't buy them.
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Old 05-21-2013, 06:49 PM   #12
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Flex Jets are one of the best things created for the 950's. Most of the fuel you burn is controlled by the Fuel Screw. It is almost impossible to get the mixture correct with out them.
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Old 05-22-2013, 12:19 AM   #13
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Never had mine move on me, but I strapped mine to the frame with a Velcro strap... maybe enough to keep them from moving any. The springs that come with them are stiffer than the OEM springs to help with this as well.

The FlexJet 2 are similar to the standard single FlexJet in that they share the same parts except for the flex cable is longer on the ones intended for the 950 and they come with grommets for the bottom airbox.

I would say that they are nice to have, a bit of a pain to install the first time, add to the complexity of servicing since there are now two more things that need to be routed down through the lower airbox.... But if you are converted over to a CPR/ITG filter assembly, they are super easy to use and make for in-field adjustments that I would have otherwise just lived with.....

No, they are not a majik bullet for all elevation changes....
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