August 13th, 2011, 05:16 PM | #1 |
ninjette.org member
Name: Tim
Location: philly
Join Date: Mar 2011 Motorcycle(s): 2010 ex250 (Blue) Posts: 63
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Bettysmith's Help Thread
So, I have a few issues, and I'm sure I'll encounter more along my journey of 250 ownership so I figured I would create a thread to encompass these. If you need any more information from me please just ask and I'll do my best to supply it.
Year: 2010 Make: ex250 Mods _Carb __Shimmed needles with 2 washers each _Intake __Removed Snorkle Issue 1: Rear end is out of alignment. _Bike has pulled to the right from the store. Tightened the chain and attempted to adjust this today to little success. I'm sure it's just more adjustment that needs to be made, but I would like a little clarity in which way to adjust the wheel. _As it's pulling to the right, I should have to tighten the brake side swing arm adjustment nut therefore actually moving that side away from the bike, correct? Or am I backwards? It side with a greater gap was the chain side. _I had used the string method to take measurement and they appeared to me (before tightening the axle nut and the lock nuts) to be aligned properly. ~2mm of difference between each side from string to certain spot on wheel. Did simply tightening the axle nut move my adjustments that much, or was there other cause for fault here? Issue 2: I'm running either rich or lean _I removed my snorkel and shimmed my carburetor needles each with 2 washers. I have yet to check the spark plugs to get a more definitive answer. _When holding steady throttle on flat road it seems to lurch ever so slightly. _It seems to lack power under 6k rpm. I understand that these bikes rev high, and generate most power from 9k up, but it almost seems that my power curve is far from linear. This is with not WOT inputs. _It seems my gas mileage is poor. I still need to take an accurate reading. Will do next time I fill up. _I'm getting either after fire or back fire. It happens mostly, from what I can tell, during deceleration during lower rpm. My best guess is that it is after fire. Issue 3: |
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August 13th, 2011, 05:43 PM | #2 |
ninjette.org dude
Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
Blog Entries: 7
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For this first issue, tightening up the axle nut can sometimes tweak the alignment a bit compared to when things were loose. The string method can let you confirm how things are sitting after they are all buttoned up, and the quick and dirty method of carefully counting the remaining threads on each side of the axle adjuster bolts does a pretty good job as well.
The ultimate "chain adjustment and rear wheel alignment" thread is linked below, read it through the end and you'll have a good idea of the process. http://www.ninjette.org/forums/showthread.php?t=13833
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August 13th, 2011, 08:04 PM | #3 |
Ridin Dirty
Name: Ed
Location: Delaware
Join Date: Jun 2011 Motorcycle(s): 2011 white se 250r , 2008 zx6R Posts: 921
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ive never had much of a issue aligning the rear tire.. line the marks up equally on both sides, tighten the adjusters down, tighten the axle nuts.. everything SHOULD be straight .
as for the carb issues, 2 shims with just the snorkel removed should run fine.. do you still have stock filter, stock exhaust?
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#1 |
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August 13th, 2011, 09:06 PM | #4 |
ninjette.org dude
Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
Blog Entries: 7
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Which marks are you referring to, the ones on the side of the swingarm that go around the axle nut? If so - don't place too much reliance on them; they are highly variable and not nearly accurate enough to align the tire by on the ninjette.
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Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered) |
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August 13th, 2011, 09:08 PM | #5 |
ninjette.org certified postwhore
Name: Cuong
Location: San Diego
Join Date: Jul 2010 Motorcycle(s): 2008 Ninja 250r, 2007 Daytona 675 Posts: A lot.
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Those alignment marks have been off on all my bikes. Thread counting has been more accurate when checked with strings.
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August 14th, 2011, 09:40 PM | #6 |
ex-ninjette.org guru :o
Name: Trevor
Location: Barrie, Ontario
Join Date: Jun 2010 Motorcycle(s): 2003 SV1000 S Posts: 475
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i use a caliper to measure. i go from the inside of the metal block that the adjuster rod is attached to to the back of the swingarm, and make sure to get it to within a couple tenths of a mm
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