Chain for my Trek 4300

[satish bachina]

Hi,

I have a 5 year old Trek 4300 and chain is worn out completely.

I want to replace the chain.

Does anybody know about the chain shown in the following link fits for Trek 4300?

http://www.playgroundonline.com/products/Btwin---TRIPLE-7-8S-CHAINSET/12621.aspx

Regards,

Satish

[sandeep shet]

You are talkng about only chain or the entire drive train??

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[Arvind Ganesh]

Take it in to a bicycle shop. Chances are that you have to replace your cassette and maybe more. With chains, you need to watch wear and replace early. If you wait too long, the old chain will wear out your drivetrain. 

-Arvind

On Tue, Apr 23, 2013 at 7:51 PM, satish bachina <sat...@gmail.com> wrote:

--

[nilesh dhumal]

Sounds like the damage has already done to the drivetrain (assuming 5 year old )

--
Nilesh N Dhumal

www.procycle.in

[Aditya Yadav]

Isnt drivetrain life dependent on the kms instead of the time? Assuming the person uses the bike only for 1000kms in a year does he still need to upgrade the drivetrain?

[Karthick Gururaj]

I made the same mistake of waiting too long. I replaced the chain but the cassette is worn out and needs to be replaced as well. The new chain will "slip" even more than the old one - so the cycle can't be used in those gears (which, by the very fact that they are worn out from usage - are the ones that you'd use the most).

- Karthick

--

[Shreedhar Ramachandra]

I just changed the chain on my Schwinn searcher sport that has done arnd 3K.
I had taken my bike for some other repair at Procycle and I asked them
to check for chain wear. They said that it was worn out. So I replaced
the chain.
What is the approx ride distance when one should start worrying about
chain wear and start checking for it? 2K, 3K, 5K??
Again this might depend on which chain you use, I'm not sure. For
instance I have KMC Z72 on both my bikes. I'm sure many bikes in
bangalore use this chain. Is there a recommended ride distance that
this chain lasts?

[Karthik Vijayakumar]

If maintained well ( degreased and lubed after every 300kms or so ) it should last about 3000kms, or a little more.

[Karthick Gururaj]

Think it also depends on many other factors - like the riding style, dirt conditions.. In my case, I had used the cycle for 5k+ before I realized the chain was starting to slip under heavy tension.. changed the chain then, but it was already late. Now looking for a 7 speed megarange shimano..

- Karthick

[sunil dutta]

Once B.O.T.S. told me that need to changed it after every 2500 kms

Sunil Dutta
9035023235

[Ravindra BR]

no of kms is one

BOTS is having an instrument to check the chain - a simple go no go thing

it says the state of your chain

just get it checked and be sure of the state of your chain

Ravi

[Aditya Yadav]

http://sheldonbrown.com/chains.html

Measuring Chain Wear

The standard way to measure chain wear is with a ruler or steel tape measure. This can be done without removing the chain from the bicycle. The normal technique is to measure a one-foot length, placing an inch mark of the ruler at the side of one rivet, then looking at the corresponding rivet 12 complete links away. On a new, unworn chain, this rivet will also line up exactly with an inch mark. With a worn chain, the rivet will be past the inch mark. [For accurate measurement, the chain should be held under some tension -- either on the bicycle, or hanging. Also, use a metal ruler or tape measure. Wood, plastic and cloth all can expand or shrink.-- John Allen]

This gives a direct measurement of the wear to the chain, and an indirect measurement of the wear to the sprockets. first, let's look at how to do this with a ruler that measures in inches.

In metric measurement, 10 links of a new chain are 25.4 cm, or 15 links, 38.1 cm.

• If the rivet is up to 25.5 cm or halfway between 38.2 cm and 38.3 cm, all is well.
• If the rivet is a little bit past 25.5 cm, or approaching 38.3 cm, you should replace the chain, but the sprockets are probably undamaged.
• If the rivet is approaching 25.7 cm or 38.5 cm, you have left it too long, and the sprockets (at least the favorite ones) will be too badly worn. If you replace a chain at this point, without replacing the sprockets, it may run OK and not skip, but the worn sprockets will cause the new chain to wear much faster than it should, until it catches up with the wear state of the sprockets.
• More than that, and a new chain will almost certainly skip on the worn sprockets, especially the smaller ones.

There are also special tools made to measure chain wear; these are a bit more convenient, though by no means necessary, and most -- except for the Shimano TL-CN40 and TL-CN41 -- are inaccurate because they allow roller play to confound the measurement of rivet-pin wear.

On Tuesday, April 23, 2013 7:51:07 PM UTC+5:30, satish wrote:

[Opendro]

You must be kidding! I have done more than 6000 on both my hybrid and nearly 8000 on my road bike. They are still pretty good. I think, chain should easily last 15000 km if you are not grinding with sand.

I generally don't apply dry lubes. I use mobile oil and it is usually pretty black and mucky. But I find it better than a squeaking dry chain.

I also use only big chain ring as my riding is usually on 3 in front and 4 in the rear - perfect - chain is kind of well aligned in this combination.

In any case, 10,000 km should be what I would think as minimum distance you would use for a chain.

[deepakvrao]

Those 'instruments' are notorious for making you throw away chains which have life left. Use the method Aditya linked to.

[Karthick Gururaj]

No, not joking, it is a fact that I have only done about 6k on the cycle and it is also true that the cassette has worn out (the new chain slips very badly and the cogs on the smallest ring have completely worn). I normally ride 3-7. The cycle is hybrid, Schwinn sporterra, don't remember the chain spec, cassette is 7 speed Shimano megarange.

I have been using dry lube, and I'm not so regular in cleaning the cycle, once every 3 weeks about - both of these might have contributed to the wear.

Sent from my Windows Phone

---

From: Opendro
Sent: 25-04-2013 09:37
To: bangalor...@googlegroups.com
Subject: Re: [BBC] Chain for my Trek 4300

You must be kidding! I have done more than 6000 on both my hybrid and nearly 8000 on my road bike. They are still pretty good. I think, chain should easily last 15000 km if you are not grinding with sand.

I generally don't apply dry lubes. I use mobile oil and it is usually pretty black and mucky. But I find it better than a squeaking dry chain.

I also use only big chain ring as my riding is usually on 3 in front and 4 in the rear - perfect - chain is kind of well aligned in this combination.

In any case, 10,000 km should be what I would think as minimum distance you would use for a chain.

[Nalla P Konar]

Opendro,
Even my Trek 4300 chain and cogs had to be replaced at close to 5k km mileage.

Had done it as per my bike's family doctors at BOTS :)

I guess its more about riding style, lube etc. Initially i was using Singer oil for lube and later migrated to Finishline.

Even my Sport1's chain was replaced at close to 6.5k kms as per Sanjay's (of Decathlon) suggestion, the cogs are still fine :)

Rgds,
Nalla.
Rider of Cleated Warriors - Bangalore Bicycle racing team
Visit http://www.facebook.com/cleatedwarriors for more details

[deepakvrao]

Many factors for chain wear.

Maintenance, number of speeds, power output, would probably be the most important.

I think 6K is good for a chain. 10 speed chains will probably not last even that long.

OPendro, curious as to how you know that your chain is still good. 

You can ride a chain for even maybe 10-12K kms, and it won't show any signs of wear, but will wear your cassette and chainrings. Then, when you put on a new chain, it will not be smooth on the then ruined cassette.

[Yateesh Kumar]

Not sure about all the figures being discussed here..
The chain on My 4300 is still going strong at 8300+
Got it checked last month at Procycle&  both Iggy&  Nelly felt its still good to go for another 1000km atleast..
First they didn't believe that it has done 8k but then also commented about the riding style&  gear usage&  riding on combination which maintains right tension can result in better life for both chain&  cassette.
Guess Nelly/iggy can eloberate & share knowledge so that the group can benifit at large :)

Cheers
Yateesh

On 25 Apr 2013 09:37, "Opendro" <ope...@gmail.com> wrote:

You must be kidding! I have done more than 6000 on both my hybrid and nearly 8000 on my road bike. They are still pretty good. I think, chain should easily last 15000 km if you are not grinding with sand.

I generally don't apply dry lubes. I use mobile oil and it is usually pretty black and mucky. But I find it better than a squeaking dry chain.

I also use only big chain ring as my riding is usually on 3 in front and 4 in the rear - perfect - chain is kind of well aligned in this combination.

In any case, 10,000 km should be what I would think as minimum distance you would use for a chain.

On Wednesday, April 24, 2013 3:54:27 PM UTC+5:30, sunil dutta wrote:

>
> Once B.O.T.S. told me that need to changed it after every 2500 kms

> On Wed, Apr 24, 2013 at 2:32 PM, Karthick Gururaj <karthick...@gmail.com> wrote:

>>
>> Think it also depends on many other factors - like the riding style, dirt conditions.. In my c...

- Karthick

>> On Wed, Apr 24, 2013 at 2:16 PM, Karthik Vijayakumar <maths....@gmail.com> wrote:

>>>
>>> If maintained well ( degreased and lubed after every 300kms or so ) it should last about 300...

>>> On Wed, Apr 24, 2013 at 12:43 PM, Shreedhar Ramachandra <shreedharr...@gmail.com> wrote:

>>>>
>>>> I just changed the chain on my Schwinn searcher sport that has done arnd 3K.

>>>> I had ta...

>>>>
>>>> On 4/24/13, Karthick Gururaj <karthick...@gmail.com> wrote:

>>>> > I made the same mistake...

> <nilesh...@gmail.com>wrote:

>>>> >
>>>> >> Sounds like the damage has already done to the drivetrain (assuming 5
>>>> >> year

>...

>> email to bangalore-bike...@googlegroups.com.

>>>> >> For more options, visit https://groups.google.com/groups/opt_out.
>>>> >>
>>>> >>
>>>> >>

>...

> email to bangalore-bike...@googlegroups.com.

>>>> > For more options, visit https://groups.google.com/groups/opt_out.
>>>> >
>>>> >
>>>> >
>>>>

...

To unsubscribe from this group and stop receiving emails from it, send an email to bangalore-bike...@googlegroups.com.

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>>>>
>>>>

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>>  

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Sunil Dutta
9035023235

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[Pradeep Naidu]

riding style&  gear usage&  riding on combination: Can anybody elaborate this please.. my chain gets worn out every 4k..i want to know what is the correct riding style and tension.

are you a part of the bicycle racing scene?
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Pradeep Naidu S

[Opendro]

Doc, I say, it is still good, because, the each chain link is sitting pretty on the cogs. They shift well too. I can do the scale measurement sometime. But then, if the cog is hugging the chain pretty good, who cares? If it last for 20000 km, I will throw away both chain and cassettes and buy a new set. I bet, it will last at least 1500 considering that I had done more than 8000 and I don't see any sign of ill-fitting.

[Opendro]

And yeah, I don't see the cogs tooth any sharpness that should show wearing out.

[deepakvrao]

Yes, that is one way of looking at it. Ride chain AND cassette till the end and replace both at the same time. It's what I will do on my tourer as replacements are cheap. shifting will NOT be hampered even if chain is worn and rides on it's matching worn casette. It's when you put a new chain on a worn cassette that you have an issue.

If you are using a 100 dollar or mor cassette, it makes sense to change chains and save the cassette.

[Venkatesh N]

Changing cassette and chain together is fine but won't overuse of chain wear out the crankset?

Cheers,
Venky
govenkygo.com

[Shankar Shastry]

OT but why replace crankset when you can replace chainrings? Not that you suggested it, but just putting it out there. Also, yes, agree with Venky here. Why bother killing the cassette when its just the chain at fault? Chains are easier to source than cassettes - whatever speed.

[nilesh dhumal]

Lube wright , high RPM's = Good Chain & Cassette Life...

[Vinay Rao]

I chanced upon this thread while searching for something else (replacement 26" wheel rims actually, but 'search-drift' is the individual's 'thread-drift :) ), and thought I should mention this.

I've done somewhere close to 10,000km since Mid-2009 on my Hercules ACT105, and I've never changed the original chain, or sprockets or drivetrain cassettes. Every few months I throw some used motorcycle oil at it from a local suspension service chap. I have not seen or felt any noticeable wear. Chances are, of course, that I do not know what to look for.

FWIW, I've never changed the tyres, and I've never had a puncture either, yet.

Cheers

Vinay R Rao
 
Director | Bang Design P Ltd
mob +91.98452.28425 | tel +91(80)4120.5881 | url www_bang_co_in
Design Excellence Award Winners 2005, 2006

www.linkedin.com/in/vinayrrao

[sandeep shet]

"FWIW, I've never changed the tyres, and I've never had a puncture either, yet."

I think you are the luckiest biker ever :)

[Sreepathi Pai]

On Fri, Jan 24, 2014 at 10:23 AM, Vinay Rao <vina...@gmail.com> wrote:

> I've done somewhere close to 10,000km since Mid-2009 on my Hercules ACT105,
> and I've never changed the original chain, or sprockets or drivetrain
> cassettes. Every few months I throw some used motorcycle oil at it from a
> local suspension service chap. I have not seen or felt any noticeable wear.
> Chances are, of course, that I do not know what to look for.

Chains are worn at 1% elongation, which is about 1/8 of an inch
increase over a foot (12 inches). You're really not going to see this.

You can notice that chainring and sprocket teeth will look like "shark teeth".

http://g-tedproductions.blogspot.com/2010/11/bike-shop-horrors-shark-tooth.html

If you ride with only a few gears, you'll probably never notice chain
wear. Try switching to a less-used gear.

--
Sreepathi Pai

[Vinay Rao]

Sreepathi,
Thanks for the link and explanation. I'm almost always on '3' on the pedal sprocket, and 4/5/6/7 on the rear. The '3'/ largest sprocket IS a little more worn than the other two, but not quite near shark tooth, yet.

Cheers,
Vinay