Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

Disadvantages of going to compact double???

Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Disadvantages of going to compact double???

Old 09-07-04, 09:31 AM
  #1  
Grasschopper
He drop me
Thread Starter
 
Grasschopper's Avatar
 
Join Date: Jul 2004
Location: Central PA
Posts: 11,646

Bikes: '03 Marin Mill Valley, '02 Eddy Merckx Corsa 0.1, '12 Giant Defy Advance, '13 Salsa Vaya

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 123 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ok so I got my bike and I got a triple as every shop here said to get that especially starting out, also our area is mountainous and just about every ride has some climb in it. So my bike has 52/42/30 and 12-25 Tiagra stuff and next year I want to upgrade it but do I upgrade to another triple or to a double. Well I ran some numbers through the gear ratio calc at Sheldon Brown's site and it looks to me that by going to a compact double and a 170mm crank (currently have 175mm and think it is too big) I am only loosing the small/big combination from my current bike.

Is there any reason not to go to a compact double? Other than bunches of gears and some weight what am I giving up?

Thanks

Last edited by Grasschopper; 09-07-04 at 09:38 AM.
Grasschopper is offline  
Old 09-07-04, 09:36 AM
  #2  
jfmckenna
Tiocfáidh ár Lá
 
jfmckenna's Avatar
 
Join Date: Dec 2003
Location: The edge of b#
Posts: 5,445

Bikes: A whole bunch-a bikes.

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 271 Post(s)
Liked 2 Times in 2 Posts
IMO the compact is the best route too take for the big hills. Shifting will be easier and smoother then the triple though lot's here will tell you that triples shift as well as doubles. I don't really see a disatvantage unless you are talking about loaded touring in which case you would definatlly want a triple. And WOW a 20T is your small ring really? A friend of mine just showed me his quad ring set up on his old Bridgestone MB2. The fourth rind was a 25T from a rear cassette that was modded to fit as a chain ring.
jfmckenna is offline  
Old 09-07-04, 09:38 AM
  #3  
Grasschopper
He drop me
Thread Starter
 
Grasschopper's Avatar
 
Join Date: Jul 2004
Location: Central PA
Posts: 11,646

Bikes: '03 Marin Mill Valley, '02 Eddy Merckx Corsa 0.1, '12 Giant Defy Advance, '13 Salsa Vaya

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 123 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Oops sorry that should read 30 I will fix that.
Grasschopper is offline  
Old 09-07-04, 11:59 AM
  #4  
almarktool
Junior Member
 
Join Date: Jun 2004
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Go for the compact double, I just took my triple off, and put on a FSA compact i also swapped out my
rear from a 12-25 to a 12-27 so i almost have as low a gear as the triple had
almarktool is offline  
Old 09-07-04, 12:09 PM
  #5  
Grasschopper
He drop me
Thread Starter
 
Grasschopper's Avatar
 
Join Date: Jul 2004
Location: Central PA
Posts: 11,646

Bikes: '03 Marin Mill Valley, '02 Eddy Merckx Corsa 0.1, '12 Giant Defy Advance, '13 Salsa Vaya

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 123 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by almarktool
Go for the compact double, I just took my triple off, and put on a FSA compact i also swapped out my
rear from a 12-25 to a 12-27 so i almost have as low a gear as the triple had
How long have you ridden this way? You do have just about as low a gear there but I was trying to think how often I am ever in small large and I am not even sure I have ever been in that gear. How is the shifting in general? Do you miss having closer ratios?
Grasschopper is offline  
Old 09-07-04, 12:19 PM
  #6  
almarktool
Junior Member
 
Join Date: Jun 2004
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I actually love it been riding 6 weeks only about 400 miles this way,
i got quite a few hills over here so the 27 comes in handy once in awhile,
i also upgraded my front derailer to a shimano 105 when i did the swap
i hated the triple i had, and always felt i had to shift to much ,
now with the double i spend alot less time shifting that's for sure
almarktool is offline  
Old 09-07-04, 12:20 PM
  #7  
almarktool
Junior Member
 
Join Date: Jun 2004
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
u can always set it up with the 12-25 and then if u need the 27 put it on later as that is a easy swap
almarktool is offline  
Old 09-07-04, 01:01 PM
  #8  
Steelrider
Senior Member
 
Join Date: Aug 2004
Location: San Jose, CA
Posts: 947

Bikes: Albert Eisentraut custom w/DA, Kestrel RT 700 w/Ultegra, Jamis Tangier

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Have test ridden a compact double and will convert my bike to this setup as soon as Shimano offers one in DA, which I am guessing will be soon. May put an FSA compact on my 2nd bike to get current benefits and so that both will be same when primary ride is converted.

Love the better shifting, as compared to a triple, and the lower gear on killer hills. Find that I lose very little on the top end, as there are only a few inches given away in rollout that I rarely use anyway as a recreational rider.

Have fun.
Steelrider is offline  
Old 09-07-04, 01:07 PM
  #9  
Grasschopper
He drop me
Thread Starter
 
Grasschopper's Avatar
 
Join Date: Jul 2004
Location: Central PA
Posts: 11,646

Bikes: '03 Marin Mill Valley, '02 Eddy Merckx Corsa 0.1, '12 Giant Defy Advance, '13 Salsa Vaya

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 123 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I keep hearing this about the shifting on a double being better. Are we talking about the chain ring shifting or the sifting in the rear on the cogs?

Steel Rider - Why not just go FSA on your primary bike?
Grasschopper is offline  
Old 09-07-04, 01:26 PM
  #10  
djbowen1
Senior Member
 
djbowen1's Avatar
 
Join Date: Jul 2003
Location: NY
Posts: 2,275

Bikes: Cervelo Soliost

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I had a C'dale R600 triple, when i got it it had a Tiagra Front Der with Coda cranks and 105 shifters, it was a triple and shifted kinda crappy, i had alot of chain falling off. I upgraded to Ultegra Triple cranks with Ultegra Der, and Ultegra Shifters and it was just as ****ty, the guys a the local lbs said that the triple will never shift as good as a double compact or not.
djbowen1 is offline  
Old 09-07-04, 01:28 PM
  #11  
Murrays
Mad Town Biker
 
Murrays's Avatar
 
Join Date: Jun 2004
Posts: 974
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
For those with a compact setup, do you find yourself doing more double and triple shifts (shift the front and the rear at the same time)? With my current 53/39 12/25, I can shift chainrings and make one shift on the rear and not have a large gear change. With a 50/34 12/23, it looks like I would have to shift the rear two or three gears to get a comfortable gear change while shifting the front.

What adjustments in shifting have you made since going compact?

-murray
Murrays is offline  
Old 09-07-04, 01:56 PM
  #12  
Steelrider
Senior Member
 
Join Date: Aug 2004
Location: San Jose, CA
Posts: 947

Bikes: Albert Eisentraut custom w/DA, Kestrel RT 700 w/Ultegra, Jamis Tangier

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Hi Murray,

The one I rode was an FSA 50/36 with a bigger cassette, so this didn't seem to be a problem.
Steelrider is offline  
Old 09-07-04, 05:37 PM
  #13  
zensuit
Senior Member
 
Join Date: Jul 2004
Posts: 687
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Grasschopper
How long have you ridden this way? You do have just about as low a gear there but I was trying to think how often I am ever in small large and I am not even sure I have ever been in that gear. How is the shifting in general? Do you miss having closer ratios?
I have a 26-13 chopper, I use the 26 for the long, steep slogs...otherwise, I spend a lot of time in that 50...
zensuit is offline  
Old 09-07-04, 05:38 PM
  #14  
zensuit
Senior Member
 
Join Date: Jul 2004
Posts: 687
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Murrays
For those with a compact setup, do you find yourself doing more double and triple shifts (shift the front and the rear at the same time)? With my current 53/39 12/25, I can shift chainrings and make one shift on the rear and not have a large gear change. With a 50/34 12/23, it looks like I would have to shift the rear two or three gears to get a comfortable gear change while shifting the front.

What adjustments in shifting have you made since going compact?

-murray
Yes, I have gotten pretty automatic when I drop down as I hit the slog part of a climb, I don't even think about it...double right, single left...never miss a beat
zensuit is offline  
Old 09-07-04, 06:11 PM
  #15  
boze
gentleman of leisure
 
boze's Avatar
 
Join Date: May 2004
Location: Washington DC
Posts: 669
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
DJbowen- that's funny because i did a 15mile test ride of an R600 that had that same setup only with a dbl up front and i thought it _still shifted like crap. not disagreeing with anything - just saying it might not be triple specific. the components on the R600 are a mismatched crapshoot anyway. i especially hated the brakes (sorry for the OT comment).
boze is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jrsbike
Classic and Vintage Sales
0
11-10-18 07:38 PM
Sjtaylor
Bicycle Mechanics
13
08-24-18 08:53 PM
zeego
Classic and Vintage Sales
0
03-14-15 08:05 AM

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.