3/32 chain on 1/8 inch cog cause problems?

stephen salter

2013-01-26

thanks everybody for all the info! extremely helpful, i got it all worked out.

On Fri, Jan 25, 2013 at 3:32 PM, stephen salter
wrote:
> I just recently traded out the cog on my track bike and now the chain doesnt seat onto the cog. i replaced the 3/32 cog with a 1/8 cog thinking it wouldnt matter. question #1: does it? also measured the chain and it is about halfway between 1/16 and 1/8 past where it should be, so its time to replace the chain. is this the reason its not seating?question #2 if i go and buy a new chain should i buy a 3/32 or 1/8 chain? will either work? ive read through a few forums and saw nothing about them being incompatible just preferences for one or the other. thanks so much for any insights!
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org


Mike Murray

2013-01-26

That is 1/8" width not pitch. Pitch is the distance between pins. Nearly all bike chains are 1/2" pitch now. For historical reference there once were 1" pitch bike chains and then more recently the failed Shimano 10mm pitch. Width is the distance between plates. At least in this case width is more important then length.
Mike Murray - Sent via BlackBerry from T-Mobile

-----Original Message-----
From: rambobikeman@frontier.com
Sender: obra-bounces@list.obra.org
Date: Fri, 25 Jan 2013 23:51:33
To: stephen salter
Cc:
Subject: Re: [OBRA Chat] 3/32 chain on 1/8 inch cog cause problems?

Chain width does matter. You can run a 1/8" chain on a 3/32" cog (or chainring), but not the other way around. So, if you're going to stick with the 1/8" cog, you'll need to install a 1/8"-pitch chain.

--
Aaron "Rambo" Harrison

----- Original Message -----
From: "stephen salter"
To: obra@list.obra.org
Sent: Friday, January 25, 2013 3:32:19 PM
Subject: [OBRA Chat] 3/32 chain on 1/8 inch cog cause problems?

I just recently traded out the cog on my track bike and now the chain doesnt seat onto the cog. i replaced the 3/32 cog with a 1/8 cog thinking it wouldnt matter. question #1: does it? also measured the chain and it is about halfway between 1/16 and 1/8 past where it should be, so its time to replace the chain. is this the reason its not seating?question #2 if i go and buy a new chain should i buy a 3/32 or 1/8 chain? will either work? ive read through a few forums and saw nothing about them being incompatible just preferences for one or the other. thanks so much for any insights!
_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org
_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org


rambobikeman@frontier.com

2013-01-25

Chain width does matter. You can run a 1/8" chain on a 3/32" cog (or chainring), but not the other way around. So, if you're going to stick with the 1/8" cog, you'll need to install a 1/8"-pitch chain.

--
Aaron "Rambo" Harrison

----- Original Message -----
From: "stephen salter"
To: obra@list.obra.org
Sent: Friday, January 25, 2013 3:32:19 PM
Subject: [OBRA Chat] 3/32 chain on 1/8 inch cog cause problems?

I just recently traded out the cog on my track bike and now the chain doesnt seat onto the cog. i replaced the 3/32 cog with a 1/8 cog thinking it wouldnt matter. question #1: does it? also measured the chain and it is about halfway between 1/16 and 1/8 past where it should be, so its time to replace the chain. is this the reason its not seating?question #2 if i go and buy a new chain should i buy a 3/32 or 1/8 chain? will either work? ive read through a few forums and saw nothing about them being incompatible just preferences for one or the other. thanks so much for any insights!
_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org


Erik Voldengen

2013-01-25

1/8 is 4/32. So the cog is probably fatter than your chain.

--
Erik Voldengen, Web Architect | erikv@erikv.com | 503-336-4893

On Fri, Jan 25, 2013 at 3:32 PM, stephen salter wrote:

> I just recently traded out the cog on my track bike and now the chain
> doesnt seat onto the cog. i replaced the 3/32 cog with a 1/8 cog thinking
> it wouldnt matter. question #1: does it? also measured the chain and it is
> about halfway between 1/16 and 1/8 past where it should be, so its time to
> replace the chain. is this the reason its not seating?question #2 if i go
> and buy a new chain should i buy a 3/32 or 1/8 chain? will either work? ive
> read through a few forums and saw nothing about them being incompatible
> just preferences for one or the other. thanks so much for any insights!
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>


stephen salter

2013-01-25

I just recently traded out the cog on my track bike and now the chain doesnt seat onto the cog. i replaced the 3/32 cog with a 1/8 cog thinking it wouldnt matter. question #1: does it? also measured the chain and it is about halfway between 1/16 and 1/8 past where it should be, so its time to replace the chain. is this the reason its not seating?question #2 if i go and buy a new chain should i buy a 3/32 or 1/8 chain? will either work? ive read through a few forums and saw nothing about them being incompatible just preferences for one or the other. thanks so much for any insights!