Cassette Wear | Tech Tuesday #189

Truman may have a worn cassette! He doesn't want to go through the process of changing the chain and riding the bike around just to find out, so he's come up with a trick of his own to learn if he does, indeed, have a worn cassette. Join Truman as he shows us this hot tip in today's TECH TUESDAY!

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[VeloNippon]

One of the reason I keep on buying Blue tools is this kind of enlightening videos! Thank you so much.

[SnowLifeNEver]

Wowww! I'm new to the bike world but despite people with more experience telling me my cassette should be changed because my chain was long overdue, I couldn't visibly find any difference between my old vs my new cassette (as opposed to my chainring which was a complete goner), therefore I was not convinced my cassette should be changed...
I am now 100% convinced! Thanks for enlightening me!

[swifttking]

These videos never fail. I always come here for high quality information on bikes. This channel is truly a dream come true. Thank you so much!

[sdy]

I use a “dummy link” it’s single two links, it’s just one set of outside links attached ti the inner links with the rollers, set it on the chainring or cassette and if it slides back and fourth, the chainring or cassette is warn, if it sits in place and dosent move back and forth they are just fine

[elrusito]

After discovering this channel last week and not seeing any new tech tuesdays, it's good to see this

[superdave]

Love the pick tool tactic! Great tip! I also think it would be worth to mention if you're replacing a drivetrain to also make sure to examine jockey wheels conditions as those wear out too.

[benokrizek]

I bought an old road bike and the previous owner let the chain stretch way too much. As I wanted to use it for commuting and some training and didn't want to invest too much into it, I simply replaced only the chain. It is a 3x8 setup and guess what - everything works just fine. I think that once your cassette and chainring(s) are slightly worn and a new chain does not skip, it is almost always quite a bit cheaper to get some more kms/miles out of your old setup.

[sylvainmichaud]

Truman is gaining more experience and wisdom as shown by a subtle touch of grey.

[siwalder]

I recently changed the chain on a shimano 1x12 as it was reading just over .75. After changing the chain the chain was skipping but only in the smallest cog on the cassette. I looked around and found that shimano sell a pack containing a just the 10 and 12t cogs (search part no Y1X498030) probably not the ideal solution but it worked for me as only my 10t cog was deformed and its about quarter the price of a new cassette. Just in case that helps anyone 👍🏻

[christopher.j.m]

I've been trying to figure out how to do this for years. finally an answer!

[DominikLoeffler]

This is a nice and easy way to examine the cassette for wear, thank you! It can be dangerous to ride when the chain skips over worn teeth. I once lost one side of a quick link because of a skipping chain on a worn cassette. I needed a friend to pick me up, but had it happened on a steep climb out of the saddle, I could have had a bad crash!

[fouresterofthetrees]

I actually like cleaning my bikes so I do it every 500 miles on both my road and touring bike. That includes re-lube of the chain. New chain every 3, 000 miles. Neither bike gets particularly dirty, at least not for long. Road bike is 32 years old with original chainrings and cassette. No skipping issues and very quiet.

[kevinfrost]

Ace tip 😁👍👏 Thanks lads ! (Truman & Calvin ………you always have the answers ⭐⭐⭐)

[antz-mf]

Hi. Thanks for the video. I plan to replace my cassette and chain. It is automatically considered necessary to also replace the front chainrings? The teeth on the front chainrings don't seem to have any burrs on them, while the smallest 3 or 4 sprockets on the cassette do.
Thanks 😃

[StrGzr]

I'm replacing my chain and cassette, anyway, but now I know exactly why. Many thanks.

[davidburgess]

There is actually a go- no go tool for checking chainring wear. I believe Park makes one. With all the ramping and profiling on modern cassettes and chainrings this might not always work. Cassette cogs typically wear out according to the one used most and small ones faster than larger. I never thought about looking for the burr but that makes sense. The real proof is if it works well with a new chain. Or an interesting experiment with a half worn chain were used. No doubt this has been done and worked, forestalling expensive repairs. The chainrings may not even be available but worn chains are!

[geistbike]

very good presentation....top from Germany

[Gabepedaler]

When replacing both chain and cassette should one also consider the derailleur pulleys? How or when should they be replaced?

[bradberry]

You stay classy San Diego. Thanks for stopping by. LOL

[peoplesrepublicofchina]

If i have scratches on my slx cassette (12 speed 10-51 tooth) on the large black ring can i cover the scratches up with a sharpie or will that decrease the shifting quality?