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


Go Back   > >

Touring Have a dream to ride a bike across your state, across the country, or around the world? Self-contained or fully supported? Trade ideas, adventures, and more in our bicycle touring forum.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-11-06, 09:04 AM   #1
Jim Brantley
Junior Member
Thread Starter
 
Join Date: Dec 2005
Bikes:
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Anyone have experience with 48/44/24 crankset?

Which front dr will work with a 48/44/24 crankset?
Jim Brantley is offline   Reply With Quote
Old 01-11-06, 09:45 AM   #2
wagathon
Banned
 
wagathon's Avatar
 
Join Date: Apr 2005
Bikes:
Posts: 1,727
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
That's a MTB triple--e.g., XT/XTR--for a road bike? If so, the same road triple front dr as for 105, Ultegra, Dura Ace cranks.
wagathon is offline   Reply With Quote
Old 01-11-06, 09:54 AM   #3
Jim Brantley
Junior Member
Thread Starter
 
Join Date: Dec 2005
Bikes:
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you go to this faq page by Chris Juden http://www.ctc.org.uk/DesktopDefault.aspx?TabID=3808 down near the bottom is a question about half-stepping. Mr. Juden does not believe current derailleurs will work well with less than a 10 tooth difference in the outer chainrings. I was wondering if this was other tourers experience.
Jim Brantley is offline   Reply With Quote
Old 01-11-06, 11:39 AM   #4
Hartmann
lost in the ozone
 
Join Date: May 2005
Location: VT
Bikes: serotta colorado, Trek 620
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I experimented with half stepping two years ago. The ramped and pinned chainrings like Shimano would not upshift well at all for me, Then someone suggested I try plain Sugino rings and those worked much better but still required some finese when shifting under load. I think because the chainrings are so close in diameter the chain is more difficult to deflect to the next chainring.
The half stepping didn't do anything for me,I went to 9 speed last year and that brought the higher gear ratios close enough together that I seldom need to double shift to find a comfortable gear.
Hartmann is offline   Reply With Quote
Old 01-11-06, 08:25 PM   #5
Michel Gagnon
Year-round cyclist
 
Join Date: Apr 2002
Location: Montréal (Québec)
Bikes:
Posts: 3,023
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
According to Robert Beckman and Rivendell, if you want half-step, a road double derailleur works best.

I had hafl-step back with my 21-speed bike, however, now that I have 27 speeds, I prefer to use a custom cassette which gives me results fairly similar to what I had with half-step plus granny, but with less double shifts. For instance, at some point, my tandem had:
48-38-24 and 13-15-16-17-18-20-23-26-34
Michel Gagnon is offline   Reply With Quote
Old 01-12-06, 12:50 AM   #6
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Location: Riga, Latvia
Bikes:
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by Jim Brantley
Which front dr will work with a 48/44/24 crankset?
I use a 105 with mine. It works just fine.
Ziemas is offline   Reply With Quote
Old 01-12-06, 09:11 AM   #7
Jim Brantley
Junior Member
Thread Starter
 
Join Date: Dec 2005
Bikes:
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Michel and Ziemas, thank you. Nothing beats experience.
Jim Brantley is offline   Reply With Quote
Old 01-12-06, 10:55 AM   #8
Mentor58
'Mizer Cats are INSANE
 
Mentor58's Avatar
 
Join Date: May 2005
Location: Clarksville, TN
Bikes: C-dale T800
Posts: 808
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Ziemas
I use a 105 with mine. It works just fine.
I'm an old fan of 'half-step with granny', just curious, do you run the FD indexed, or friction? How picky was it when it came to tuning, inquiring minds want to know. I may just have to play with it.

Steve W.
Who thinks Sheldon Brown's online gear calculator the best thing since sliced bread
Mentor58 is offline   Reply With Quote
Old 01-12-06, 11:02 AM   #9
af895
Senior Member
 
af895's Avatar
 
Join Date: May 2005
Location: Montreal, Canada
Bikes: 2003 KHS F20-Westwood folding & enough parts to make several more bikes...
Posts: 853
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Mentor58
...
Who thinks Sheldon Brown's online gear calculator the best thing since sliced bread
HA! I was just thinking about how much I use that page. Fantastic.
__________________
af895 is offline   Reply With Quote
Old 01-12-06, 11:16 AM   #10
wagathon
Banned
 
wagathon's Avatar
 
Join Date: Apr 2005
Bikes:
Posts: 1,727
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have a 22/32/44 on a road bike; however, I also could also have chosen 24/34/48 right off the shelf if I'd wanted a little higher gear (48x12). With this, I have Ultegra index shifting using the new 12x27 DA 10-spd hub.

I had the complex, down tube, double shifting arrangement that you're talking about on my old-old "15-speed" to get the most usable gears out of it as I could at the time. However, I didn't have nearly as many usable (for me), closely stepped gears and easily shifted gears as I have now.

For example, I now have about 17 gears starting below 1:1 with a step of less than about 14" between gears without any double shifting (except with each single change of the rings when going from low to high).

wagathon is offline   Reply With Quote
Old 01-12-06, 11:41 AM   #11
Sheldon Brown
Gone, but not forgotten
 
Sheldon Brown's Avatar
 
Join Date: Jul 2002
Location: Newtonville, Massachusetts
Bikes: See: http://sheldonbrown.org/bicycles
Posts: 2,301
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by Mentor58
Sheldon Brown's online gear calculator the best thing since sliced bread
...hmmm...not sure how to take that...

Is sliced bread actually a good thing? All of the best bread I've ever had came in unsliced loaves... ;-)

Sheldon "Only A Memory Since I Went On The Atkins Diet" Brown
Code:
+----------------------------------------------------------------+
|  The thing about the cold is that you can never tell how cold  |
|  it is from looking out a kitchen window. You have to dress    |
|  up, get out training and when you come back, you then know    |
|  how cold it is.		   	                -Sean Kelly  |
+----------------------------------------------------------------+
Sheldon Brown is offline   Reply With Quote
Old 01-12-06, 11:51 AM   #12
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Location: Riga, Latvia
Bikes:
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by Mentor58
I'm an old fan of 'half-step with granny', just curious, do you run the FD indexed, or friction? How picky was it when it came to tuning, inquiring minds want to know. I may just have to play with it.

Steve W.
Who thinks Sheldon Brown's online gear calculator the best thing since sliced bread
Indexed. Not to fussy, all is okay.
Ziemas 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 11:56 AM.