Chains Stretch?
- Thread starter mymaster
- Start date
That means those little dog-bone links making up the chain are physically lengthening, I don't believe that.(proud dad @ Sep. 17 2007,01:49)
CHAINS STRETCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
unless you have an EKZZZ no adjustment needed for 6ooo miles so far.
the stock chain was adjusted every 2 weeks.because it stretched
that sprocket above is toast
you are correct that the "little dog-bone links" do not stretch...what happens is that the pins holding the front and back plates together wear as they are used...this allows the chain to "become" longer or "stretch"(mymaster @ Sep. 17 2007,03:59)That means those little dog-bone links making up the chain are physically lengthening, I don't believe that.(proud dad @ Sep. 17 2007,01:49)
CHAINS STRETCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
unless you have an EKZZZ no adjustment needed for 6ooo miles so far.
the stock chain was adjusted every 2 weeks.because it stretched
that sprocket above is toast
i don't remember the figures at the moment but you measure from center of pin to center of pin for a certain number of links...when it reaches a certain length, the chain needs to be replaced...hopefully, someone will come along with the specs on this
OK, if you insist(semi @ Sep. 17 2007,05:05) i don't remember the figures at the moment but you measure from center of pin to center of pin for a certain number of links...when it reaches a certain length, the chain needs to be replaced...hopefully, someone will come along with the specs on this
The picture shows that that chain did stretch , deforming the sprockets-- The reason is because the grease that WAS sealed inside the chain is long gone ... many miles before this pic was taken the owner would have seen [ red oxides ] or rust leaking out past the o-rings of the chain....
This is the begining of the end ---- If one were to replace the chain at first sight of [rust].. your sprockets can almost last forever.... 40,000 miles and four chains on my 85 900 Ninja.....original sprockets.....still looked good....
This is the begining of the end ---- If one were to replace the chain at first sight of [rust].. your sprockets can almost last forever.... 40,000 miles and four chains on my 85 900 Ninja.....original sprockets.....still looked good....
Sorry, the original pic was just to illustrate, but became the topic, my fault, disregard it - two year old pic of someone I use to work with.
I'm sticking with wear, elastic and rope stretch - chains wear
As long as it's adjusted,clean and lubed, it's all good.
Heres an article...
http://www.cybersteering.com/cruise/feature/bullet/adj_drivechain.html
and a couple pics for the fun of it because you all like them, now excuse me while I go hide out of harms way.
nice busa chain - ooooooh.
bigoltool
Registered
A motorcycle chain and sprockets are noting but bearing surfaces. So you are eventually going to get wear there, which will cause the chain to lengthen. As mentioned above all metals will stretch to some extent, depending on the forces acting upon them. So technically it is a combination of both. The EK Tensile Strength of 11500 LBs I have seen published does not state whether it is an ultimate yield strength or if that is to the point of permanent deformation?
+1
When you torque a fastener you are "stretching" the fastener to create clamping force. If you over-torque, you may pass the point of elasticity and the fastener may never retain it's original characteristics or size. This is why you have different grades of bolts. This is easily applied to the topic here as the amount of torque the Busa creates can "stretch" the chain if it exceeds or repeatedly challenges the load limitations of the chain. Just my .02.
Not going any deeper then this but IMO the "pulling" force that is applied in relation to chain and sprocket can be qrgued to have similair characteristics of the fastener "pulling" force to clamp. Your still putting torque/load to the metal whether it is moving or not otherwise the bike would not move and the bolt would not clamp. Think of a rock being pulled with a rubber band to simulate the force your engine creates to turn the chain to turn the sprocket to make you move. The point was that all metal can stretch and when pushed to the limitations of it's specifications it can fail and never return to it's original state. Call it stretch if you want to or not.
Good points and nice chatting... I'm late to a give a seminar on Torque at Toyota.
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