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Canadian Daves JustKDX
Gearing Down a KDX 220
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[QUOTE="Jaybird, post: 700639, member: 22283"] There really should be no difference in the amount of time spending for maintenance of ring chain or a standard. They both need the same attention. Many will give you some info based soley on their own anecdotal experience, and claim it to be fact. Others may give you actual reasons why things are like they are, and not simply their opinion of such. I prefer the facts, as opposed to someones dreamed up absolutes. Instaurare, You were correct in your thinking with bicycle chains and sprockets. There is NO difference in the science of chain drives be they on bicycles, dirt bikes, or machinery. There are absolutes that hold true no matter the application, when using a chain drive. The reason you gave for changing out the chain and rear sprocket on your bicycle when the front gets worn is quite correct. A sprocket DOES NOT wear out a chain. It is the other way around. When you see any deforming, on either sprocket, it is a direct result of the chain lengthening in pitch from wear. If you have a chain/sprocket set-up that is wearing the front sprocket, then you have a worn chain. No question about it. Your rear may not have seen as much deforming yet due to a couple of things. For one, many run hard steel rear sprockets thinking they last longer. The DO last longer, but simply because they don't accept the wear that a worn chain places on it like an aluminum would. The hard steel front will see the wear faster because it is doing the work with less teeth than the rear. (this also relates to the smaller the sprocket, the faster the wear) I have seen situations where a person changes their front sprocket out and continue to run the chain and rear sprocket. The chain was worn to begin with, hense the wear of the front sprocket....however they haven't noticed the damage on the rear, so they change out the front, and leave on the old chain only to see wear on the front sprocket again. What is happening is that the chain is getting increasingly worn....and the front sprocket with it's new pitch teeth, and the hard steel rear sprocket are accelerating the wear on the already stretched chain. (this is the only situation that a sprocket can place wear on a chain) Pretty soon you have a situation where the person is running a dangerously worn chain and quite happy with their set-up. Good chain/sprocket maintenance means that you will get the most life out of your equipment. And you will also gain in performance, if that is of any concern to you. If you keep your chain (standard or ring, makes no difference) clean, well lubed, and adjusted properly, you will see good service from it. However, in our conditions a chain will eventually wear and elongate. You must keep an eye on where your chain measurement is from time to time. You don't have to be anal about it....you just need to measure it whenever you see a need to tighten it up at the adjusters. If the chain isn't getting slack, it hasn't elongated yet. If you do find slack, even the most simple of persons will realise that there has been a growth take place. Any sort of elongation will directly relate to the sprocket teeth, as they are perfectly matched in pitch when new. Once a chain elongates, it is no longer a perfect match. That is when wear starts on the sprockets. An engineering fact (that holds true for bicycles, dirt bikes, machinery, etc..) is that most any sprocket will withstand a slight variation in pitch before it will wear the sprocket. This accepted percent of growth is ~1-2% from new. In theroy, if you change out your chain when it reaches a point of being 1-1.5% of new pitch, then your sprockets can last indefinately. There are other factors like rocks and debris damaging the teeth, but all you need is a visual inspection to identify that sort of problem. Yeah, I go indepth with chain and sprocket maintenance, but it is one of the most important parts of your machine. Neglect it if you want, and accept advise from those who choose to neglect their power transmission, but you will be happier and wealthier if you practice good maintenance. I will back up any of my statements, with engineering data that can be accessed easily. The goof-balls who try to steer you away from this sort of advise have a sore spot, because most of them have never practiced good chain/sprocket maintenance, and quite frankly don't have a good clue on how to do such. I can tell you this for fact...*if you think you are going to get a bikes lifetime out of a single chain, you are only fooling yourself. You should also not try to fool others with such ignorance. *(disclaimer...if you have a parade bike that you shine on, but rarely ride....this statement is null and void) Skiblo, If you have any more to offer...then by all means offer it. Your same old song and dance (which hinges back to when you got your feelings hurt becasue you were shown to be full of it) gets tiring. Sure you may be tired of hearing about my advise on chains, but it's a simple matter of you just passing on by. If you are so concerned that I'm full of it on the issue, why don't you offer up something of substance? YHO isn't much IMO. (45-56) :think: [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Gearing Down a KDX 220
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