What Is Chain Stretch? What causes it?
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- Опубликовано: 2 июл 2024
- I explain what "chain stretch" is, or rather what it isn't, and show what causes it.
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Lots of people have tried to explain what chain stretch is. This is by FAR the best explanation I've seen. Thanks RJ!
Legs definitely do not have the kind of power it takes to actually stretch steel, even mild steel.
Agreed. One consequence of wear is a higher bending of the chain. This results in poor shifting. In my experience this is more convincing to many to exchange their chain.
Long ago, when I was putting a lot of miles on '70s era motorcycles, I bought bulk chain from the local farm supply. My friends kept telling me it was somehow inferior to what they got from the dealer. The thing is, while I was wearing out four $7 chains, they were wearing out two $30 chains and a $150 set of sprockets. They were slow to replace that expensive chain when it started to get worn.
That was a great explanation. I knew about chain stretch for years, only as a term. Very educational. Thank you RJ!
Great depiction! As they say, you know you understand something fully when you can explain it so a 5 year old can understand.
Great video. Also important to note that those moving contact area's are where the lube is needed most. So many people tend to think like they need to be "painting the plates", but its the contact points that count.
Wow - that's the best explanation I've ever seen. Love the wooden mock up example to show what's really happening.
Beautiful demonstration!
I actually have one chain with wear so bad like demonstrated here. The casette on one ring is already badly damaged.
Excellent visual aid.
Also very relevant to motorcycle chains, where it's easier/more comfortable to believe your 200hp superbike is stretching the chain, than that your lack of maintenance is sending it to an early grave.
This is a great illustration of why you have to keep your chain clean and lubed. Thanks, RJ!
that's a good explanation, and the wood mock-up may help correct those who might believe chain stretch is the steel stretching under stress or repeated use. however, i would clarify that serious hill climbing is going to cause chain 'stretch' much more rapidly than normal riding. this is because friction at the wear points you've shown us increases with pressure. so i would say the factors that affect chain wear are 1) cleanliness, 2) lube, 3) riding style, and 4) metallurgy of the chain material
Brilliant. I’ve never gone through the theory behind chain-wear tools. Didn’t even know what the tool is supposed to measure. But this is a video à la RJ The Bike Guy: so clear, no fancy talking, sales talk. And the mockup: an image says more than a 1000 words. Thanks RJ! 👍
For a new person into MTB this was the best easiest explanation than other videos and straight to the point . Other videos took 3-4 min before they start to explain shit
Wow! RJ you have moved to new level here. You made props! This is some Alton Brown level action of explanation. Hands down the best video on chain stretch on RUclips!
I love it! I built the same sort of visual aid for my mechanics class two years ago. You put a lot more work into your wooden example--mine is just coroplast 'plates' and a binding post.
I had scrap wood and a scroll saw. And a drill press, and arbor bits. I actually have a lot of non-bike tools too. :D
I appreciate the effort and time needed to build those plywood oversized chain links. A drawing could have worked but no you went the extra mile, thank you for that.
Excellent explanation, the best I've seen so far.
What a great way to show and explain!
Well explained and demonstrated
RJ that’s the way you explain chain wear.I watched even though I already knew but always enjoy your videos you always go that extra mile like with the mock up.
Fantastic explanation! Great job.
Great illustration! Thanks RJ.
Excellent explanation RJ. Thanks!
I'm always learning stuff from this channel. Thanks RJ.
Best teacher ever ! Watching you since 3 or 4 years, sir. :)
Great description and visual of the topic!👍🏻
Great demo!
Great explanation and demonstration!
Marvellous video demonstration and mock up model! Thanks RJ.
Excellent explanation, as always
Brilliance! Well done, sir.
Great explanation, thanks!
Excellent explanation! Thank you
A great explanation. Thank you!
Just fantastic, sublime , RJ is simply the best in his game 🙏
Fantastic explanation!
Best explanation ever!
Love the mock up. Great vid!
A brilliant explanation.
Thanks for posting this. Very good demo and very informative. Love your woodshop example!
Awesome explanation RJ!
Best explanation ever. Thank you
Great explanation on chain wear. Thank you.
This is the best explanation I’ve found so far! Very helpful
Perfect explanation
Very informative and great use of a mock up. Thank you Bike Guy.
Nice to see ya back the bike guy.
nice explanation. Thank you
We stopped using that term in my bike shop because people would think about it too litterally, its wear on the chain, not stretch.
Same here, there were far too many pedantic people willing to argue over semantics.
Very nicely explained! Thank you 👍🏼
Very good explanation!
very informative video. Thanks!
Great simple explanation!
I agree with Joel, by far the best video explaining chain stretch thank you
One of the (if not THE) best explanation ! Thanks and congrats for the great job 🔥👏👍
Nice job RJ.
Thank you for the explanation🔧🔧🔧
Nice explanation and having the large chain model was a great idea. It's too bad people started calling it chain stretch to begin with... a misnomer!
Best explanation !
Best explanation on chain wear. Thanks for the effort!
Excellent video and explanation.
Excellent video.
Awesome video RJ! A good guide for us mere casual riders and makes me appreciate bike maintenance (and cleaning) more. Cheers!
Yet, another smashing presentation and educational video of its terminology. Good stuff RJ, thanks again.
Never have I clicked on a video faster. Another masterpiece 👍
very well explained.... nice chain mock-up!
Good job. You nailed it. Thanks for the video.....
Superb explanation
I really appreciate the effort you put in to make this video, very helpful!
great video, great explanation!
Great video!!! Thank u. Simple but very well explained.
I never go anywhere else for help always easy to understand thank you.
Good Work. Thank you
Thank you for the information have a great 2022.
great info thanks
Well done , best video ever on the chain stretch , enjoy the effects you put in . 👍🏾👍🏾
Great video! Thanks
Very great explanation and demonstration, thanks. Have a nice day.
There is also a small amount of wear on the rollers from meshing with the gears. But this is the pefect explanation for what people call "stretch"
Very true. You can even see this if you have cleaned a worn out chain. The rollers are not round any more.
Great idea with the wooden links!
Also great explanation why a worn chain damages the sprockets.
Great visual aid, clarifies stretch easily
Great video!
Been searching for this specific content. Thanks alot
great visual explanation of chain stretch, rj!
Great explanation. You’re use of teaching aids was excellent Very clear and concise. Good job! Thanks!
Nice explanation ...great hand-made model!
Thanks Regular Guy J the bike guy for all the great video's
The easiets way to explain I could imagine! thank you!
Thanks for the video👍
Another excellent video RJ, I never saw a better explanation. Thanks 👍👍
That cleared it up for me. Thank you
Great visual explanation! I’m always describing this to people in the hopes they keep their chains cleaned and lubed. Will refer them to this as well 👍
Very informative, nice demo device.
this is by far the best explanation out there. thanks for schooling me.
great job!
Good job brother!
Great explanation, RJ. I approve, as a long time bike wrench myself.
I think you could've easily expanded this subject to the entire drive train, being that they interact so closely and how chain stretch effects other components too.
Well done!
He’s back
Thank you very much for that video. You explained it very very well. I love the chain model you made.
Great video. Nothing more, nothing less.
Great model!