What Is Chain Stretch? What causes it?
ฝัง
- เผยแพร่เมื่อ 8 ก.ค. 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.
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 - that's the best explanation I've ever seen. Love the wooden mock up example to show what's really happening.
This is a great illustration of why you have to keep your chain clean and lubed. Thanks, RJ!
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.
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! 👍
Great illustration! Thanks RJ.
What a great way to show and explain!
Great demo!
Fantastic explanation! Great job.
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
Excellent explanation RJ. Thanks!
Great explanation and demonstration!
I agree with Joel, by far the best video explaining chain stretch thank you
Great explanation, thanks!
Brilliance! Well done, sir.
Excellent explanation, as always
Marvellous video demonstration and mock up model! Thanks RJ.
Best teacher ever ! Watching you since 3 or 4 years, sir. :)
Well explained and demonstrated
This is the best explanation I’ve found so far! Very helpful
Nice to see ya back the bike guy.
Perfect explanation
A brilliant explanation.
Beautiful demonstration!
I actually have one chain with wear so bad like demonstrated here. The casette on one ring is already badly damaged.
A great explanation. Thank you!
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.
Great explanation on chain wear. Thank you.
Awesome explanation RJ!
Very informative and great use of a mock up. Thank you Bike Guy.
I'm always learning stuff from this channel. Thanks RJ.
Fantastic explanation!
Excellent explanation, the best I've seen so far.
Excellent explanation! Thank you
Thank you for explaining this so well, I just measured my chain on my road bike from target that I've put quite a few thousand miles on in almost a decade of riding. You'll be happy to know it is only an ⅛ of an inch per foot stretched on the original chain. Might be time for a new one.
Love the mock up. Great vid!
Great visual aid, clarifies stretch easily
Very good explanation!
Best explanation !
great info thanks
Excellent video.
Very nicely explained! Thank you 👍🏼
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 TH-cam!
Just fantastic, sublime , RJ is simply the best in his game 🙏
nice explanation. Thank you
Best explanation ever. Thank you
Good Work. Thank you
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!
Nice job RJ.
Thank you for the explanation🔧🔧🔧
Yet, another smashing presentation and educational video of its terminology. Good stuff RJ, thanks again.
Superb explanation
Great simple explanation!
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.
Best explanation ever!
great video, great explanation!
Excellent video and explanation.
Good job. You nailed it. Thanks for the video.....
I never go anywhere else for help always easy to understand thank you.
very informative video. Thanks!
Awesome video RJ! A good guide for us mere casual riders and makes me appreciate bike maintenance (and cleaning) more. Cheers!
Thank you for the information have a great 2022.
great visual explanation of chain stretch, rj!
The easiets way to explain I could imagine! thank you!
great job!
Great video!
Thank you!
Great description and visual of the topic!👍🏻
very well explained.... nice chain mock-up!
Great model!
Thanks for posting this. Very good demo and very informative. Love your woodshop example!
Great video! Thanks
Excellent!
Thank you so much for this video. I have just bought myself an e-bike and I want to work on it myself and this video has answered my question about how chains stretch.
Great video!!! Thank u. Simple but very well explained.
Great idea with the wooden links!
Also great explanation why a worn chain damages the sprockets.
Thanks Regular Guy J the bike guy for all the great video's
Thanks for the video👍
Nice explanation ...great hand-made model!
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 explanation. You’re use of teaching aids was excellent Very clear and concise. Good job! Thanks!
That cleared it up for me. Thank you
One of the (if not THE) best explanation ! Thanks and congrats for the great job 🔥👏👍
Never have I clicked on a video faster. Another masterpiece 👍
I’m glad to see you getting your hands dirty. Most TH-cam mechanics wear rubber gloves to keep their delicate hands clean. Thanks RJ for keeping it real and very informative.
Good job brother!
Best explanation on chain wear. Thanks for the effort!
Great illustration of chain “stretch”.
I really appreciate the effort you put in to make this video, very helpful!
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
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 👍
Thx for the video man and happy New year
Excellent! Until now I wasn't aware of the 1/2" distance between each link. Thanks.
man amazing explanation great job
Thx clear and good explanation!!
Great. Thank you👍