Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Hybrid Bicycles Where else would you go to discuss these fun, versatile bikes?

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-03-12, 08:09 PM   #1
als20
Junior Member
Thread Starter
 
Join Date: May 2012
Location: Vancouver Island,BC
Bikes: Marin,"Lucas Valley",Mercier,"Corvus"
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chain ring or cassette change over?

Hi all.I just purchased a 2012 Marin Lucas Valley,my first brand new bike for myself.The unit comes with 52/42/30 and 11-26 cassette.I would like to have a little more hill climbing capability for the hills out here in British Columbia,Canada.This would come in handy especially when I am thinking about doing some touring.Any suggestions?
Happy to be a new member to the forum,thank you.
als20 is offline   Reply With Quote
Old 06-03-12, 08:32 PM   #2
jsdavis
Senior Member
 
Join Date: Apr 2011
Bikes:
Posts: 1,192
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Not knowing which Tiagra rear derailleur came on your bike, it's hard to say. [strike]You can can use up to 31T as the largest gear on the rear if you have the short cage RD. If you have the long cage, it can go bigger[/strike].

Last edited by jsdavis; 06-04-12 at 08:31 PM.
jsdavis is offline   Reply With Quote
Old 06-03-12, 09:15 PM   #3
Tom Bombadil
His Brain is Gone!
 
Tom Bombadil's Avatar
 
Join Date: Sep 2006
Location: Paoli, Wisconsin
Bikes: RANS Stratus, Bridgestone CB-1, Trek 7600, Sun EZ-Rider AX, Fuji Absolute 1.0, Cayne Rambler 3
Posts: 9,980
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you have the newest Shimano Tiagra RD, then they now offer a Tiagra-level 12-30T rear cassette.

If it happens to be their previous model, then it can be problematic to go over 11-28T. I've known of people who have had a lot of problems when trying to use a 30T on the old version.
__________________
"Too often I would hear men boast of the miles covered that day, rarely of what they had seen." Louis L'Amour

There are two types of road bikers: bikers who are faster than me, and me. Bruce Cameron - Denver Post
Tom Bombadil is offline   Reply With Quote
Old 06-03-12, 10:00 PM   #4
Seve
Senior Member
 
Seve's Avatar
 
Join Date: Aug 2010
Location: The GTA, Ontario, Canada
Bikes: 2009 Rocky Mountain RC30 D
Posts: 737
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by als20 View Post
Hi all.I just purchased a 2012 Marin Lucas Valley,my first brand new bike for myself.The unit comes with 52/42/30 and 11-26 cassette.I would like to have a little more hill climbing capability for the hills out here in British Columbia,Canada.This would come in handy especially when I am thinking about doing some touring.Any suggestions?
Happy to be a new member to the forum,thank you.
As already mentioned, if you post the model of derailleur you will get more detailed assistance.
If it's a RD-4500 with a short cage, 31 would be the largest, with a long cage the limit is 37. (You can check Shimano's web site for the exact specs once you know the model No. etc.) http://bike.shimano.com/publish/cont...-.rd_road.html
Seve is offline   Reply With Quote
Old 06-03-12, 10:30 PM   #5
Igo
Senior Member
 
Join Date: Jun 2011
Location: Henderson/Las Vegas NV
Bikes: Giant Defy 2
Posts: 1,498
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by als20 View Post
Hi all.I just purchased a 2012 Marin Lucas Valley,my first brand new bike for myself.The unit comes with 52/42/30 and 11-26 cassette.I would like to have a little more hill climbing capability for the hills out here in British Columbia,Canada.This would come in handy especially when I am thinking about doing some touring.Any suggestions?
Happy to be a new member to the forum,thank you.
The Shimano web site shows a 9 speed 11-30 Tiagra cassette that should make your bike pull like a D9 Cat. New version Tiagra only.
Igo is offline   Reply With Quote
Old 06-04-12, 09:20 AM   #6
als20
Junior Member
Thread Starter
 
Join Date: May 2012
Location: Vancouver Island,BC
Bikes: Marin,"Lucas Valley",Mercier,"Corvus"
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thank you all for your input.I now have an idea where to concentrate on.
als20 is offline   Reply With Quote
Old 06-04-12, 04:17 PM   #7
Tom Bombadil
His Brain is Gone!
 
Tom Bombadil's Avatar
 
Join Date: Sep 2006
Location: Paoli, Wisconsin
Bikes: RANS Stratus, Bridgestone CB-1, Trek 7600, Sun EZ-Rider AX, Fuji Absolute 1.0, Cayne Rambler 3
Posts: 9,980
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Seve View Post
As already mentioned, if you post the model of derailleur you will get more detailed assistance.
If it's a RD-4500 with a short cage, 31 would be the largest, with a long cage the limit is 37. (You can check Shimano's web site for the exact specs once you know the model No. etc.) http://bike.shimano.com/publish/cont...-.rd_road.html
You are misreading their specs. That link states their maximum rear cog size is 27T. The "Total Capacity 37T" spec means what the total range is when both the front and rear ranges are added. That is, if you have front triple 50/39/30 that is 20, then the rear max difference would be 17, for a total of 37.

According to Shimano, the old version Tiagra has a supported max rear cog size of 27. Although many people have reported they have used 28T and 29T cogs successfully, however some have said it can be balky with a 29.

The new version Tiagra supports a rear cog size of up to 30T.
__________________
"Too often I would hear men boast of the miles covered that day, rarely of what they had seen." Louis L'Amour

There are two types of road bikers: bikers who are faster than me, and me. Bruce Cameron - Denver Post
Tom Bombadil is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 12:48 PM.