Determining the correct chain length

[JXV]

I see now on the first post you shouldn't do what I just did (measure new with old chain length). Can a chain really stretch that much? Didn't really have any issues shifting

yes the old worn chain can be longer so count the same number of links, don't measure on length alone.

 

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[Karman de Lange]

The chain on my roadbike is due for replacement.  I suspect that the LBS that did the last chain replacement might have setup the chain slightly too long. I know that when replacing a chain you should not measure the lenght of the new chain with that of the old as the old chain is stretched.

 

How do I determine the correct chain lenght for my bike?

Shimano has step by step manual how to setup whole system. Just google it ;-)

[leeubok]

yes HG95 is a HG-X chain. Chains that come in the box normally have 116 links. Some of the online stores sell unpackaged chains that are shorter. I have some spare new HG95 links but getting them to you could be a mission. I'm in Pmb ...if there's an easy way, PM me.

 

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Ja got it from cwc in a plastic packet, normally they come in a small box type package. I've watched a couple of YouTube videos now and will see tomorrow if the shorter chain is going to work. It should

Thanks for the offer though jxv

[Karman de Lange]

http://bike.shimano.com/media/techdocs/content/cycle/SI/RD/SI_5X90A_002/SI_5X90A_001/SI-5X90A-001-ENG_v1_m56577569830671285.pdf

 

Not same, but close enough

[Bateleur1]

Shimano has step by step manual how to setup whole system. Just google it ;-)

 

Thanks.  One of the videos posted on this thread was of grate help.  Can't remember exactly but replaced with success.  The chain was last replaced at one of my LBS just before we left South Africa and I suspect the chain was too long in anyway.  Now it fits perfectly.

 

Ironically I learned something else wrt to chains.  I know that for the last couple of chain replacements the Bike shops liked putting SRAM or other 3rd party chains on which they said makes no difference.  I always had a problem with at least one of the gears sounding as if it is not 100 indexed.  Now that I replaced my chain with a Shimano chain, my gears are silent and smooth.

[Karman de Lange]

Thanks.  One of the videos posted on this thread was of grate help.  Can't remember exactly but replaced with success.  The chain was last replaced at one of my LBS just before we left South Africa and I suspect the chain was too long in anyway.  Now it fits perfectly.

 

Ironically I learned something else wrt to chains.  I know that for the last couple of chain replacements the Bike shops liked putting SRAM or other 3rd party chains on which they said makes no difference.  I always had a problem with at least one of the gears sounding as if it is not 100 indexed.  Now that I replaced my chain with a Shimano chain, my gears are silent and smooth.

Another thing I learned :

 

In order to obtain good gear shifting performance, the CN7900 / CN-6700 has a forward side and a reverse side, and the sides are marked so that the CN-7900 / CN-6700 will face the correct way when installed.

 

 

[NotSoBigBen]

So not wanting to open a new thread for the same question (albeit 1*9) just want to confirm that in fact the 'longest' you technically can make the chain is if you are in the smallest cog at the back the chain barely (as close as possible) clears the RD wheels?

 

Then as long as you can shift to the biggest cog with some little slack in the RD tension it should be good to go ...

 

Edit - OR should I look at it the other way round ... the 'shortest' you can make the chain is on the biggest cog with a little tension left in RD and then it still clears the RD wheels on the smallest cog ...

 

Jinne ek maak myself deurmekaar 

[JacBrand]

So not wanting to open a new thread for the same question (albeit 1*9) just want to confirm that in fact the 'longest' you technically can make the chain is if you are in the smallest cog at the back the chain barely (as close as possible) clears the RD wheels?

 

Then as long as you can shift to the biggest cog with some little slack in the RD tension it should be good to go ...

 

Edit - OR should I look at it the other way round ... the 'shortest' you can make the chain is on the biggest cog with a little tension left in RD and then it still clears the RD wheels on the smallest cog ...

 

Jinne ek maak myself deurmekaar 

On the big chain ring and biggest casset cog there must be some play in the derailleur. On smallest smallest the RD wheels must just clear - This was important on a 3x mtb set up where your small chain ring was typically a 24 tooth ring. On a standard set up road bike, the chain is not as slack on the small ring small cog. There I think it is more important to get the big ring big cog right.

I focus more on the big ring big cog scenario as this is where you can cause serious damage if the chain is to short.

[NotSoBigBen]

Opinions guys?