Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the February Giveaway for a Chance to Win 2x METRO Hybrid Bikes


Changing inner chainring and cassette for touring
#1
Hi there,

I have a roadbike with 42 & 52 chainrings and a 12-23 rear cassette but I am going to do some touring in a month carrying a heavy load so I need much lower gearing. My plan based on my research into costs and ease of installation is to change my inner ring to the smallest it will take (38tooth) and change the cassette for a 12-30.

I think I will change the rear derailleur to a "Shimano Deore Rear Derailleur M591", do you guys think this will be OK for this set-up? Also for someone carrying a tent, sleeping bag, and water etc through mountains do you think this will suffice?

I am also considering changing the outer ring to something slightly smaller, like a 50 or 48 as I'm not keen on cycling mega-fast.

Many thanks for any time taken in giving me feedback and advise!

William


Chainring: http://www.bicyclemagic.com/products.php?plid=m4b67s113p2797&rs=gb
Cassette: http://www.cyclerepairman.co.uk/details.asp?ID=194
RD: http://www.chainreactioncycles.com/Models.aspx?ModelID=40543&utm_source=google&utm_medium=shopping&utm_campaign=Google-Products-UK
  Reply
#2
Basically your plan is fine.
The derailleur will easily match the cassette and assuming your gear changers will also match the Deore.
The only thing I would say is to get as low a gear system as you can.
My tourer has a triple crankset of 24/36/46 with a 12/28 rear cassette but I only carry light loads.
A lot will depend on the terrain and your abilities, but at worst you may have to walk.Smile
Ride hard or ride home alone!
  Reply
#3
Hi William;

You can get awhole crankset and a new front derailleur for less than the cost of the chainrings - assuming square taper BB axle.

http://www.amazon.com/Shimano-M131-Crankset-170mm-48/dp/B003ZMDJW6/
http://www.amazon.com/Shimano-Alivio--pull-Multiclamp-Derailleurs/dp/B001GSSMWS/

I'd also go with an 11-32 cassette (assuming 8 or 9 speed)
http://www.amazon.com/SRAM-PG850-11-32T-Speed-Cassette/dp/B000NNX2P4/
http://www.amazon.com/SRAM-PG980-11-34T-Speed-Cassette/dp/B000PHK3B4/

28/32 combination will let you climb some pretty steep hills with a load, and 48/11 is slightly taller than your current 52/12 so you can still fly....
Nigel
  Reply
#4
Hi man,

Thanks for this advise and I wish I could get a triple crank but that would mean changing to a triple shifter too, and they are mega expensive.

I'm now thinking of getting a compact double crank 34-50 with a 13-32 cassette.

(06-02-2011, 03:43 PM)nfmisso Wrote:  Hi William;

You can get awhole crankset and a new front derailleur for less than the cost of the chainrings - assuming square taper BB axle.

http://www.amazon.com/Shimano-M131-Crankset-170mm-48/dp/B003ZMDJW6/
http://www.amazon.com/Shimano-Alivio--pull-Multiclamp-Derailleurs/dp/B001GSSMWS/

I'd also go with an 11-32 cassette (assuming 8 or 9 speed)
http://www.amazon.com/SRAM-PG850-11-32T-Speed-Cassette/dp/B000NNX2P4/
http://www.amazon.com/SRAM-PG980-11-34T-Speed-Cassette/dp/B000PHK3B4/

28/32 combination will let you climb some pretty steep hills with a load, and 48/11 is slightly taller than your current 52/12 so you can still fly....
  Reply
#5
on another forum there is a guy who took the big chain ring off 28-38-48; leaving a 28-38. He lined up the 38 with the center cog at the back so that it would work every sprocket at the back, and only uses the 28 ring with the bigger sprockets at the back.

38/11 is still pretty decent top gear, and 28/34 is a real hill climber.
Nigel
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
14,845
12-01-2023, 02:21 PM
Last Post: Lss555
 
13,113
11-30-2012, 10:45 PM
Last Post: RobAR
 
8,772
01-26-2011, 09:16 PM
Last Post: KC-Steve

Forum Jump:

[-]
10 Latest Posts
WTB Raddler TCS 40c, small cut - repaira...
Yesterday 08:30 PM
Slingshot road bike
02-19-2024 04:08 PM
Customize your profile (photo, signature...
02-19-2024 06:24 AM
Official Shimano 105 Crankset Raw Weight...
02-19-2024 01:12 AM
Ground breaking design or gimmick ?
02-18-2024 01:16 PM
Staying Active as the Wet, Cold & Darkne...
02-18-2024 12:49 PM
1990 Specialized Rockhopper How to Fluff...
02-18-2024 11:30 AM
E Bike Rental Bled
02-17-2024 02:16 PM
belt drive mid-drive off road capable eb...
02-15-2024 05:03 PM
Growing pain for e-bikes.
02-15-2024 03:44 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. GirishH
24 posts
no avatar 2. enkei
16 posts
no avatar 3. ReapThaWhirlwind
15 posts
no avatar 4. Jesper
13 posts
no avatar 5. Painkiller
12 posts