March 10th, 2014, 09:22 AM | #1 |
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this could be a major problem...
Recently installed a new chain and rear sprocket on the 250. Last week when I got off work, I noticed that nut to tighten the chain is loose and now it doesn't fit into the socket as the metal rod is bent (sorry, don't really know what the parts are called but please refer to the photos) would it be okay for me to just bend it back so that it would fit appropriately? I have no clue how it came loose and I think the reason why it's bent is because the chain probably hit it as you can see a small scuff mark on the corner of the plate.
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March 10th, 2014, 09:31 AM | #2 |
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The nut backed up and the rectangular part rotated until hitting the heads of those sprocket bolts.
You need an additional nut to fix this one in the proper position. If the new nut cannot go over the bent rod, you could try straighten it with a hammer and a piece of hard wood. Please see related recent thread: http://www.ninjette.org/forums/showthread.php?t=34073
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March 10th, 2014, 09:36 AM | #3 |
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In general, repairs that involve hammers and/or putting things in a vise and bending them are not compatible with either safety or long-term durability.
Having said that, in this case bending it back probably won't hurt anything. The purpose of that assembly is to locate the axle prior to tightening the axle nut. It's not loaded in actual operation. For future reference: Final word: If I saw something like this on a used bike, I'd pass. It's a sign that something went wrong that I as a purchaser don't want to deal with. So if resale is important to you, I'd just replace the part.
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March 10th, 2014, 09:38 AM | #4 |
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Have you tried loosening it a bit more then realigning it and tightening it back? Making sure to check that it stays even with the other side of course. I don't really see how that would happen in the first place though unless you tightened it without making sure it was alligned right after you popped the chain onto the new sprocket.
And yes, hammers make fantastic tools. |
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March 10th, 2014, 09:39 AM | #5 | |
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Quote:
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March 10th, 2014, 09:42 AM | #6 |
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They should both have 2 nuts.
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March 10th, 2014, 09:46 AM | #7 | ||
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Quote:
Quote:
Yes, left side should have two nuts: + Vibration and lack of friction on the threads of the nut.
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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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March 10th, 2014, 09:47 AM | #8 |
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Its bent because it hit the nuts holding in the sprocket. I usually silicone the left plate into the swing arm.
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March 10th, 2014, 09:51 AM | #9 |
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Thanks everyone. I will try to hammer it back to straighten the rod so the rectangular piece fits back into the socket. Then get a second nut after I align and check the chain's tension and probably use some loctite on it since I already have some
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March 10th, 2014, 10:03 AM | #10 | |
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Quote:
I use a lock in my sprocket and more than once I have forgotten about it and have bent that threaded rod. As many times I have straighten it. What I try to say is that it is made of low carbon steel and it will stand several cycles of bending before breaking off. If you prefer using Loctite, avoid the red one, which is for permanent locking, blue Loctite is much more easy to work with.
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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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March 10th, 2014, 10:20 AM | #11 | |
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March 10th, 2014, 02:29 PM | #12 | |
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March 10th, 2014, 02:36 PM | #13 |
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