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19T Cog or Half Link
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Author:  Canaan [ Thu Sep 30, 2010 1:02 pm ]
Post subject:  19T Cog or Half Link

I'm trying to set up my budget single-speed conversion (vertical drop outs) to run without a chain tensioner or eccentric bottom bracket. The chain is too tight with a 20T cog and too loose with an 18T cog. Does anyone have a 19T I could try, or can anyone recommend a shop likely to carry a half link for an 8-speed chain?

Author:  24v [ Thu Sep 30, 2010 2:22 pm ]
Post subject:  Re: 19T Cog or Half Link

Canaan wrote:
single-speed............. 8-speed chain

Image

I'm not so sure you are going to finda 1/2 link for that type of chain. It may be close enough to work, but I would just cough up the coin for a true SS chain, then use the 1/2 link.

Author:  Canaan [ Thu Sep 30, 2010 2:31 pm ]
Post subject:  Re: 19T Cog or Half Link

It's a 3/32" chain, commonly used on 8-speed cassettes. Half links are made for them, but I don't want to spend 4 times the cost of the half link just to get it shipped.

I don't want to buy a single speed chain because this is a budget single speed (which means I'm cheap).

Author:  Los [ Thu Sep 30, 2010 2:57 pm ]
Post subject:  Re: 19T Cog or Half Link

Just have someone push you. That way you dont have to buy anything! Sorry Im of no use here

Author:  ocd [ Thu Sep 30, 2010 3:23 pm ]
Post subject:  Re: 19T Cog or Half Link

Adams ave has half links. Or at least they used to.

Author:  24v [ Thu Sep 30, 2010 3:37 pm ]
Post subject:  Re: 19T Cog or Half Link

Bike Bling does as well. Not sure which kind, but I know Mike got one there.

Author:  PedalinLito [ Thu Sep 30, 2010 5:55 pm ]
Post subject:  Re: 19T Cog or Half Link

Canaan wrote:
I'm trying to set up my budget single-speed conversion (vertical drop outs) to run without a chain tensioner or eccentric bottom bracket. The chain is too tight with a 20T cog and too loose with an 18T cog. Does anyone have a 19T I could try, or can anyone recommend a shop likely to carry a half link for an 8-speed chain?


Isn't that why you have vertical dropouts? What size chainring are you running?

Author:  02bullit [ Thu Sep 30, 2010 7:36 pm ]
Post subject:  Re: 19T Cog or Half Link

I had the same problem on my Niner when I had it set up single speed. A half link will work temporarily until the chain gets stretched and then you'll be in the same boat all over again. Best thing would be to splurge on a tensioner. The Surly singleator is relatively cheap.
I will check and see if I half an extra half link in the tool box, but I would still look into a tensioner.

Author:  Ratigan [ Fri Oct 01, 2010 8:51 am ]
Post subject:  Re: 19T Cog or Half Link

If you aren't already using one, the SRAM connecting link acts as a half link ... :thumbsup:

Author:  PedalinLito [ Fri Oct 01, 2010 2:02 pm ]
Post subject:  Re: 19T Cog or Half Link

02bullit wrote:
I had the same problem on my Niner when I had it set up single speed. A half link will work temporarily until the chain gets stretched and then you'll be in the same boat all over again. Best thing would be to splurge on a tensioner. The Surly singleator is relatively cheap.
I will check and see if I half an extra half link in the tool box, but I would still look into a tensioner.



I have that half-link. :D Unfortunately, it's being used, sorry!

Hey Eric, I know this is G-H-E-T-T-O, but once, just to make a ride, I actually used a derailleur as a tensioner with the stops set so they wouldn't move. It worked.... For a while, I was abe to run without a tensioner, but I was running a 33-18 with the chain @ 50% wear and it worked great (a wee bit tight) until the chain stretched out, then I had no choice but to get a tensioner and a half-link! Oh well, such is life with single-speeds!

Author:  24v [ Fri Oct 01, 2010 5:38 pm ]
Post subject:  Re: 19T Cog or Half Link

Ratigan wrote:
the SRAM connecting link acts as a half link

Image

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