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BMX General => BMX Chat => Topic started by: woodz77 on March 09, 2008, 02:10 PM

Title: are all chains the same length ?? after a new one . do i measure my old one ?
Post by: woodz77 on March 09, 2008, 02:10 PM

as title really . want a new clean chain but dont know if theres different lengths etc ????

Title: Re: are all chains the same length ?? after a new one . do i measure my old one ?
Post by: jackel on March 09, 2008, 02:13 PM

no just cut your new chain down to size there all a bit to big when new :)

Title: Re: are all chains the same length ?? after a new one . do i measure my old one ?
Post by: woodz77 on March 09, 2008, 02:33 PM

how do i cut it down ? just knock the pin out of the link and then rejoin it ?? just want to check before i fook it up :2funny:

Title: Re: are all chains the same length ?? after a new one . do i measure my old one ?
Post by: priv on March 09, 2008, 02:44 PM

use a chain tool to prise the pin out,not all the way out,and then do the opposite way round to get it back in.


a nice tip use a piece of wire coat hanger between the links outside the links your removing to keep the chain together.

http://www.parktool.com/repair/readhowto.asp?id=25


priv


 

Title: Re: are all chains the same length ?? after a new one . do i measure my old one
Post by: darkersomeday on March 09, 2008, 02:47 PM

Quote from: woodz77 on March 09, 2008, 02:33 PM

how do i cut it down ? just knock the pin out of the link and then rejoin it ?? just want to check before i fook it up :2funny:

yes.
put both chains side-by-side and compare to make sure the chains are the same pitch/gauge,
count the links on your old chain,

Title: Re: are all chains the same length ?? after a new one . do i measure my old one
Post by: subversion on March 09, 2008, 03:24 PM

BMX chains are ½”.

You can check to see if a chain has stretched by using a 12" rule, a new chain will be 12" pin-pin if you hold the rule up to it. You can check how much a chain has stretched by measuring how far the pin is over the 12" mark :daumenhoch:

If you fit a new chain after having your old one on for a good while & you count the same amount of links, chances are your back wheel will be deeper into the dropout than it was with the old one, once you have set up the correct chain tension again...

cheers

Title: Re: are all chains the same length ?? after a new one . do i measure my old one ?
Post by: JT71 on March 10, 2008, 09:04 AM

throw the old one away, don't worry about how long it is.

get your bike upside down, position wheel forward in the drop out, as far forward as your tensoiner will allow.

get new chain around your rear sprocket then round the chain ring and see where it comes, break it there with chain tool, these are only £3 in tesco, and join it with it's quick link, tension if needed, then enjoy.

PS: i got chains 1/2" x 3/8" 116 links, more than enough, complete with quick link for joining in Red, Yellow or plain silver

£7.49 posted to your door royal mail first class.  :daumenhoch: