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Cassette for ironman uk
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mlb




Joined: 26 Jun 2011
Posts: 2

PostPosted: Sun Jun 26, 2011 7:20 pm    Post subject: Cassette for ironman uk Reply with quote

I am doing Ironman uk this year and was wondering what size Cassette to use

Last edited by mlb on Sun Jun 26, 2011 7:37 pm; edited 1 time in total
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ttowel




Joined: 30 Sep 2008
Posts: 4056
Location: Swim School

PostPosted: Sun Jun 26, 2011 7:21 pm    Post subject: Reply with quote

10 speed if your bike has 10 speed, and shimano or Sram if you run shimano. campag if you run campag
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bryanm




Joined: 07 Nov 2007
Posts: 849
Location: Boredsville

PostPosted: Sun Jun 26, 2011 7:42 pm    Post subject: Reply with quote

I'd go for a C90.

God that gives my age away!!
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Dru




Joined: 31 Jul 2009
Posts: 572
Location: Cardiff

PostPosted: Sun Jun 26, 2011 7:43 pm    Post subject: Reply with quote

what are you running at the moment fella?

Road bike or TT bike?

double, compact or triple up front?

Current Cassette you are using at the rear?
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mlb




Joined: 26 Jun 2011
Posts: 2

PostPosted: Sun Jun 26, 2011 7:50 pm    Post subject: Reply with quote

TT bike with 12-25 cassette thinking of changing because of the hill but not sure what to

Confused
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ttowel




Joined: 30 Sep 2008
Posts: 4056
Location: Swim School

PostPosted: Sun Jun 26, 2011 8:03 pm    Post subject: Reply with quote

mlb wrote:
TT bike with 12-25 cassette thinking of changing because of the hill but not sure what to

Confused


Errr 27?
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Tucky




Joined: 06 Jun 2008
Posts: 489
Location: Qatar

PostPosted: Mon Jun 27, 2011 3:54 am    Post subject: Reply with quote

I'm riding a 54/42 11-26.

Having not cycled up a hill for 2 years, I think I might struggle a bit!
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earthling




Joined: 26 Feb 2011
Posts: 1796
Location: Born to tri, forced to work....

PostPosted: Mon Jun 27, 2011 6:07 am    Post subject: Reply with quote

Tucky wrote:
I'm riding a 54/42 11-26.

Having not cycled up a hill for 2 years, I think I might struggle a bit!


Tucky.

That is why god invented Dukhan. Get yer ar$e over there Twisted Evil

And good luck of course Very Happy
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Tucky




Joined: 06 Jun 2008
Posts: 489
Location: Qatar

PostPosted: Mon Jun 27, 2011 11:14 am    Post subject: Reply with quote

Quote:
That is why god invented Dukhan. Get yer ar$e over there


I think I do pretty well to get out for 6 hours on the bike, let alone another 2 hours driving on top of that.

I don't think I could get that one past the wife.

Managed to get the full 180k in on Friday morning, good to break in the new bike. Happy with that at this time of year!
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Fuzzy Dunlop




Joined: 14 Jul 2008
Posts: 3098
Location: In my kitchen making a secret sauce...

PostPosted: Mon Jun 27, 2011 1:42 pm    Post subject: Reply with quote

11-28
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ed_m




Joined: 15 May 2003
Posts: 8052
Location: coventry

PostPosted: Mon Jun 27, 2011 2:03 pm    Post subject: Reply with quote

tbh on a double even on a 27 or 28 you will be in grinding territory at the top of SHL especially 3rd time of asking... and most likely way over any kind of threshold you may have set yourself to stay below (power / HR / RPE).

if you have an easier gear you will use it... and may lessen the damage a little.

first year in bolton i had a 12-25 (39 front)... last year & since had 11-27.
not sure i noticed the difference, it was still a drag to get up the hill.
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dustboy




Joined: 19 May 2007
Posts: 225

PostPosted: Mon Jun 27, 2011 2:53 pm    Post subject: Reply with quote

I used a 50/34 front and a 12/27 back. I am a rubbish cyclist and it wasn't that tough. Maybe out of the seat for a bit, but only just on the top of SHL.

Got a 11/28 on my new ride. 28 is just too low!
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daetho




Joined: 01 Feb 2017
Posts: 46

PostPosted: Wed Mar 08, 2017 12:40 pm    Post subject: Reply with quote

Aiming for sub 6 this year and thinking about my gearing.

Currently got 53/39 ring and deciding between 11-25 or 11-28 for the cassette - leaning towards the 28 for the hills. What's everyone else using?
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PCP




Joined: 13 Oct 2012
Posts: 1591
Location: Manchester

PostPosted: Wed Mar 08, 2017 9:34 pm    Post subject: Reply with quote

I have a 53/38 (swapped my 39 for a 38 for Wales, every little helps Laughing ) and 11-28 on my TT bike for hilly races. I'm an average biker and this will get me round IMUK comfortably (hopefully in around 6 hours). There will be a little bit of grinding at the top of SHL & Hunters but nothing I won't have trained for.

Last edited by PCP on Thu Mar 09, 2017 5:20 pm; edited 1 time in total
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daetho




Joined: 01 Feb 2017
Posts: 46

PostPosted: Thu Mar 09, 2017 1:15 pm    Post subject: Reply with quote

Thanks PCP - I've gone with the 11-28, that's what I'm used to on my everyday road bike so probably makes sense. I'm planning on getting a ride on the course in May so will find out Arrow
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