April 3rd, 2017, 06:22 PM | #1 |
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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Chain broke on highway
Well...Today was a ****** day guys.
Was doing 75-80 MPH on the freeway today, and I started to feel a wonky feeling coming from the rear tire- almost like a flat. I looked over my shoulder, and the tire was not flat. I started to slow down and looked over my shoulder again, and saw something fly off my bike. Within seconds, all the power cut from the engine (revs maxed out) and I felt the chain come off the bike. I immediately pulled in the clutch and braked onto the shoulder and shut the bike off. Here's the aftermath of the rear: http://imgur.com/a/inzqV I'm still working on getting the front sprocket cover off, but from what I can tell- it looks to be mostly OK in there, just the cover is chewed up. What do you guys think? Looks like the swing arm is bent. Ugh Here's the aftermath of the front: http://imgur.com/a/RSBtd Looks like the damage is mostly on the back. There is a nick/scratch taken out of the block, but it appears to be superficial. My biggest problem is the swingarm, I think.. Last futzed with by Bluberryrain; April 5th, 2017 at 08:27 AM. Reason: Adding pics of front sproket. 4/5 - Adding full album. Somehow I didn't do this :p |
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April 3rd, 2017, 07:19 PM | #2 |
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I see no damage to the swingarm; just need to replace the tensioner and its cap.
This advice comes late, but it may save your skin the next time: https://www.ninjette.org/forums/showthread.php?t=133019 The chain looks extremely dry and tight. The front sprocket is due for retirement. You were very lucky, my friend !!!
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April 3rd, 2017, 08:11 PM | #3 |
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On my last chain several of the rollers fell off while going down the highway and I thought I got lucky but my friend you truly got lucky that the rear wheel didn't lock up on ya.
Glad to see your ok. |
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April 3rd, 2017, 08:30 PM | #4 |
cadd cadd cadd
Name: Cadd
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Nick, go out and buy a few lotto tickets. It could've been nasty had the chain got stuck and locked the rear tire while you were doing 75.
Your swingarm will most likely need to be replaced. It looks pretty bent to me. While you're swapping that out, double check the rear wheel to make sure it's still true and straight in case the chain somehow damaged it.
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April 3rd, 2017, 09:15 PM | #5 |
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From the photos, the chain and sprockets should have been replaced long ago. The rollers and rear sprocket are shiny, showing lack of lube, and the chain has the kinked look of one that's in bad shape. I'm glad you're OK. O-ring chains are not no-maintenance chains!
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April 3rd, 2017, 10:08 PM | #6 |
Certifiable nontundrum
Name: Harper
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glad you ok though
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April 3rd, 2017, 10:44 PM | #7 |
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Man that's freaky! Final drive maintenance can be tricky and/or tedious but once you figure it all out and get into a routine, it's not so bad. If you REALLY don't like it, consider a scottoiler or similar system, but remember you've still gotta check the slack and all that stuff. If THAT bothers you, get a shaft-driven bike (I personally have a huge boner for viragos).
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April 3rd, 2017, 11:12 PM | #8 | ||||||
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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Quote:
The thing is- I did service/lube up the chain about 3-4 weeks ago, but maybe I didn't do a good enough job, or use the proper product. Or, maybe the chain was just so far gone- it didn't matter. I will definitely be replacing both sprockets, the tensioner and the chain. Quote:
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Thank you for all of your well wishes guys- means a lot! Yes, I agree that I'm absolutely lucky here. I have no ****ing idea how the rear wheel didn't lock up on me, and I'm so happy it didn't. I was wearing full gear (as always) but hitting the ground that fast in a lot of traffic would have likely ended very badly for me. I've definitely learned my lesson here. This is a mistake that will NOT be repeated, and let this be a PSA to anyone reading this thread: DON'T TEST YOUR LUCK like me. Luckily, I've prepared myself as much as I could for these types of situations, so there were no panic reactions to make things worse for me. |
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April 3rd, 2017, 11:34 PM | #9 |
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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By the way - any recommendations on new chain + sprockets?
Was thinking of going with this one: http://www.ebay.com/itm/EX250R-Ninja...1X9rPe&vxp=mtr There are certainly some cheaper options on ebay, but I want to make sure I'm not getting some POS kit. |
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April 4th, 2017, 06:54 AM | #10 |
Guy Who Enjoys Riding
Name: Jim
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There are lots of good ones to choose from. I'm partial to RK chain and JT sprockets, for good quality and reasonable cost.
Yes, chains can lock the rear wheel. They can also wad up at the front sprocket and do major damage to the transmission case. I think I'll go lube my chain. |
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April 4th, 2017, 09:29 AM | #11 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
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Wow... awesome luck you got there. Happy this is just a repair story.
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April 4th, 2017, 09:52 AM | #12 |
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I'm glad it's just some damage to the bike, as much as that sucks. At least you didn't get hurt.
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April 4th, 2017, 10:12 AM | #13 |
ninjette.org member
Name: Chris
Location: Atlanta
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As long as youre replacing it, might as well upgrade. I have used this kit twice with good results:
https://www.speedmotoco.com/415-CHAI...50300ninja.htm |
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April 4th, 2017, 10:32 AM | #14 |
cadd cadd cadd
Name: Cadd
Location: 41°21'13.1"N, 74°41'37.4"W
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At 18,000 miles, I replaced my OEM chain with this RK Racing Chain 520-SO-106 106-Links O-Ring Chain with Connecting Link on Amazon for $56 in June 2016 It looks like the price dropped slightly since then.
So far so good with the chain. I have put about 8,000 miles on the chain since then it it seems to still be in great shape. The next time the chain needs replacement, I'll swap the front and rear sprockets as well. Best of luck to you.
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April 4th, 2017, 12:23 PM | #15 |
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I can also vouch for RK
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April 4th, 2017, 03:16 PM | #16 | |
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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Quote:
I went ahead and bought that chain, along with JT Sprockets front 15 and rear 45, as well as a new tensioner. Parts should be here by Friday. Also going to get one of those chain oiling tools in the link Hernan posted above. |
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April 4th, 2017, 03:51 PM | #17 |
Guy Who Enjoys Riding
Name: Jim
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You should probably read about Scottoilers before you invest in one, to be sure you understand what it is, and its pros and cons.
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April 4th, 2017, 05:06 PM | #18 |
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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April 4th, 2017, 05:44 PM | #19 |
Guy Who Enjoys Riding
Name: Jim
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Gotcha. I hadn't seen that before. It might be a nice way to not have to make a cardboard shield to keep the overspray off my wheel and tire every time I use my Maxima Chain Wax.
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April 5th, 2017, 08:30 AM | #20 |
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Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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Uploaded a few more pics of the front- I realized I didn't post the whole album, just one picture.
I'll take a few more of the chain tonight, so you can see how many places it failed in. |
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April 8th, 2017, 08:01 PM | #21 |
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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So, I got all my parts today:
-Front Sprocket -Rear Sprocket -Chain -Axle Adjusters/Chain Tensioner However, couple things: 1.) RK O-ring chain only came with a clip master link. Am I OK to use the clip and safety wire it, or should I really order a rivet style master link & a rivet chain tool? I'm thinking safety wire should be OK, especially with regular maintenance. 2.) The rear wheel hub bolts/nuts are pretty chewed up from the chain spinning around the rear sprocket like a chainsaw. I'm not sure if I'll be able to get the nuts back on, after replacing the rear sprocket: http://imgur.com/a/QbZ0j I may be able to use a file/sandpaper to smooth the end of the bolts out, however it's more probable that they are toast. That leaves me having to buy a new rear wheel bearing hub. The good-ish news is, they are relatively inexpensive on eBay. ~ $15.00 - $40.00 give or take. http://www.ebay.com/itm/08-12-KAWASA...hUGb30&vxp=mtr http://www.ebay.com/itm/08-12-KAWASA...p=mtr#viTabs_0 Does anyone have any experience with this job? I surfed the DIY section, and I don't see any that are relevant. I also checked the service manual, and there appears to be a brief section at 10-17, 10-18, which basically sends you all over the service manual. Has anyone replaced this? How difficult is it? Edit: I've also considered just redoing the threads with a die? |
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April 8th, 2017, 10:07 PM | #22 | |
Guy Who Enjoys Riding
Name: Jim
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Quote:
https://www.youtube.com/watch?v=OlTMKMk2CIo |
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April 9th, 2017, 07:15 AM | #23 | |
Daily Ninjette rider
Name: Hernan
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Quote:
The areas that really do the work (threads of the nuts, washer-like surface of the nuts and threads of the bolts that are inside the nuts) are intact. The filing is for protecting the threads of the nuts while unscrewing them.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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April 9th, 2017, 10:48 AM | #24 | ||
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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Quote:
I'll tell you, losing a chain on the freeway once is enough! ....That it is. Quote:
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April 9th, 2017, 04:23 PM | #25 | |
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
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Quote:
Is the hub supposed to wiggle like this? https://youtu.be/ACeBaCA6MGc Edit: looks like it's normal? https://www.ninjette.org/forums/showthread.php?t=176731 |
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April 9th, 2017, 06:43 PM | #26 | |
Daily Ninjette rider
Name: Hernan
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Quote:
The shaft presses all the bearings and separators together and eliminates that movement.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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April 9th, 2017, 06:55 PM | #27 |
ninjette.org member
Name: Chris
Location: Atlanta
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I purchased a set of wheels from someone who had dropped a chain and chewed up the studs on the cush drive just like you. I ran a die on them to clean the threads and installed new nuts, havent had a problem with them yet. Theyre M10 coarse thread if i remember correctly.
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April 9th, 2017, 09:52 PM | #28 |
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Name: Nick
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Well boys (and girls too),
She's back together!! We'll see how she goes tomorrow |
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April 10th, 2017, 08:52 AM | #29 |
cadd cadd cadd
Name: Cadd
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I just used the clip master link as-is, without any adhesive. I do clean and lube my chain once every 500 miles (about once a week). I personally feel comfortable with that inspection interval for using a clip type master link.
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April 10th, 2017, 07:56 PM | #30 |
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Name: Nick
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I dare say the bike is fixed & runs even better than before!
Acceleration is smooth, shifting is smooth, and I love the new gearing. I'm happy I decided to go with the 15/45 combo. Feels like the acceleration is spread out across all the gears, and the extra get-up-and-go in the top end is very much welcomed. |
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April 10th, 2017, 08:56 PM | #31 |
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Excellent!
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April 11th, 2017, 02:27 PM | #32 |
Daily Ninjette rider
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Keep an eye on that clip.
Even better, post a picture of it when you can.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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April 11th, 2017, 07:14 PM | #33 | |
ninjette.org member
Name: Nick
Location: USA
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Quote:
https://imgur.com/a/IGrBC |
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April 11th, 2017, 07:25 PM | #34 | |
Daily Ninjette rider
Name: Hernan
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Quote:
__________________________________________________
Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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April 11th, 2017, 07:44 PM | #35 |
Guy Who Enjoys Riding
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Good job with the adhesive, Nick.
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April 11th, 2017, 08:16 PM | #36 | ||
ninjette.org member
Name: Nick
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Quote:
This is what I have: https://images-na.ssl-images-amazon....SR160,160_.jpg Quote:
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April 11th, 2017, 08:51 PM | #37 |
Guy Who Enjoys Riding
Name: Jim
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You can't go wrong with PJ1, but it's really gooey and will build up quite a mess under the front sprocket cover. I've been using Maxima Chain Wax lately, and it seems to be a little less messy, but see what you think about the PJ1.
The label used to say "contains synthetic sperm oil" in the '70s. |
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April 11th, 2017, 09:22 PM | #38 | |
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Name: Nick
Location: USA
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Quote:
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April 12th, 2017, 05:48 AM | #39 |
cadd cadd cadd
Name: Cadd
Location: 41°21'13.1"N, 74°41'37.4"W
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The chain I replaced came with thick clear grease as well. It was really thick (about the same consistency as foam air filter lube or vasoline). I knew if I installed the chain as-is, it'll pick up so much grime. So, I degreased it and applied my own chain lube (I use DuPont).
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