BCTTT Forum

Posted: **25 Sep 2015 16:11**

I only have three !!

I have black 105 on the cyclocross - grey 6800 ultegra on the TT - it was built for the cycle show in Birmingham and was built with a long cage.

Ordered a new ultegra short cage from wiggle. And re the cabling - getting fettled by the Dr in a couple of weeks. None of this jagwire shite.

Posted: **26 Sep 2015 22:29**

Ewan wrote:I *think* the normal ultegra cage supports up to 28 teeth which should be more than enough for the normal range of conditions you might experience on a TT bike. If you are doing a long hilly tri (IM wales for example) then you may want more of a 'road' type gearing to avoid having to mash the hills, but at 31.8gear inches, 34/28 should be spinny enough for almost any climb you are going to encounter.

ewan is right. you want a bigger gear than 39/23 for IM wales. :oops:

Posted: **27 Sep 2015 16:51**

ris wrote:
Ewan wrote:I *think* the normal ultegra cage supports up to 28 teeth which should be more than enough for the normal range of conditions you might experience on a TT bike. If you are doing a long hilly tri (IM wales for example) then you may want more of a 'road' type gearing to avoid having to mash the hills, but at 31.8gear inches, 34/28 should be spinny enough for almost any climb you are going to encounter.

ewan is right. you want a bigger gear than 39/23 for IM wales.

A snaller one you mean.

Bigger rear sprocket. Smaller gear.

Posted: **27 Sep 2015 16:55**

Yeah. That. The opposite of what I wrote and did

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Posted: **27 Sep 2015 16:58**

ris wrote:
ewan is right. you want a bigger gear than 39/23 for IM wales.

Results speak for themselves... 39/23 for the win!

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