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

New: Take Part in the May Giveaway for a Change to Win the Thruster 27.5 Retrograde BMX Cruiser Bike


Front Chain Ring size?
#1
I have a Centurion Ironman Expert. The front chain rings are 52 and 42 and they are the Bio-pace Hp rings and a 7 speed rear. I feel the front chain ring sizes are too close to the same. I ride a lot of rolling trails and some hills. What would a good pair (sizes)?
  Reply
#2
Nice Bike. The gearing spacing of 10T is common. You may consider a 38T chain ring to replace the 42. You do not say what the rear sizes are. The other way to go is get a larger cassette in rear if you do a lot of climbing and want to set up for that. Like a 14-32.

If you can try bikes with different gearings that may help you find a good set up for your roads.
Never Give Up!!!
  Reply
#3
The rear rings are 11-28. I feel they are a good range.
  Reply
#4
Another bit of advice is to go to a LBS to test ride a model with the close gear range of your rear cassette and different ratios in the front. Or if you are part of a riding group (friends) who may have something similar.


Good luck with your findings,
Bill
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#5
(05-02-2010, 09:08 PM)joker3366 Wrote:  I have a Centurion Ironman Expert. The front chain rings are 52 and 42 and they are the Bio-pace Hp rings and a 7 speed rear. I feel the front chain ring sizes are too close to the same. I ride a lot of rolling trails and some hills. What would a good pair (sizes)?

The latest fad is "compact" chainsets. - 50/34. These are in favour with "sportive" riders as there is usually stiff climbs involved in sportive events.
Something like that would give you a great variation of gears.
Your Bio-pace rings can be changed for normal rings if you didn't want to buy a new chainset complete.
I do have one bike with this setup but sometimes I find it hard to get just the right ratio for some conditions.
You end up with a large chain angle such as large chainring to large rear sprocket.
Ride hard or ride home alone!
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
16,034
01-18-2010, 08:41 AM
Last Post: Jordan300
 
11,945
08-18-2009, 12:04 PM
Last Post: DaveM

Forum Jump:

[-]
10 Latest Posts
ISO Susan B bike by Terry
Today 03:36 AM
Shimano Deore shifter
Today 02:09 AM
9 speed chain on 8 speed bike
Today 02:06 AM
Expensive bikes with crappy wheels
Yesterday 11:12 AM
Specialized bicycle post issue
Yesterday 06:21 AM
What did your first bicycle mean to you?
05-23-2024 11:38 AM
Doctors are Prescribing Cycling
05-23-2024 11:34 AM
Getting back into riding, bike instead o...
05-22-2024 12:55 AM
What was your first bicycle?
05-21-2024 07:27 PM
Philodo H8
05-20-2024 12:50 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. Jesper
32 posts
no avatar 2. Nutribun
22 posts
no avatar 3. enkei
20 posts
no avatar 4. Burrobabe
14 posts
no avatar 5. GirishH
13 posts