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

Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Thread Tools Search this Thread
Old 05-10-10, 09:13 PM   #1
Thread Starter
Join Date: Apr 2010
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Front Derailleur Question

Do front derailleurs come in different flavors ie. 2 speed and 3 speed? How can I tell if I have a 2 or a 3? I just installed a triple crank on my bike and have the Taigra 4500 triple front but I can't get my old derailleur to function properly with it. The derailleur I'm using is an old part, from the original build which was a double front. I had no problems keeping the rear derailleur and stepping it up from a 7 to a 9 speed. Will I need to purchase a new front derailleur?
jwpray84 is offline   Reply With Quote
Old 05-10-10, 09:27 PM   #2
Lost Again
gitarzan's Avatar
Join Date: Jul 2009
Location: Columbus, Oh!
Bikes: Soma Saga, 1991 Sirrus, Specialized Secteur Elite, Miele Umbria Elite.
Posts: 1,041
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Threes often have a wider inside plate. Two will be closer in size.

You may need to adjust, but you may see issues shifting from lowest front to mid. FDs are not that expensive.
gitarzan is offline   Reply With Quote
Old 05-10-10, 09:30 PM   #3
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 35,054
Mentioned: 100 Post(s)
Tagged: 1 Thread(s)
Quoted: 3446 Post(s)
Most FD have sufficient travel to accommodate triple cranks, but there are differences.

FD cages are curved to best fit with outer chainrings of certain size ranges, ie, 52-53 road, 48-50 compact drive, 46-48 mtb. Also the length and drop of the back of the cage determines the minimum size granny they'll fit. Most atb FD,s will work with a 24t granny, most road FD are limited to inners of 38t or more, though road triples can go smaller.

So don't sweat double or triple as much as the chainring sizes it'll work with.
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is online now   Reply With Quote
Old 05-10-10, 09:36 PM   #4
bobonker's Avatar
Join Date: Oct 2009
Location: Nor Cal
Posts: 816
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A lot of the Shimano triple stuff that I've seen ends in a 3 or 4. If you look in the inner side of the FD, it should be have a number on it. FD-4503 maybe? I have a 105 triple FD in my hand it it is stamped FD-5504. I also just swapped an Ultegra 6600 double FD that was stamped FD-6600 for an Ultegra 6700 double FD that was stamped FD-6700.

bobonker is offline   Reply With Quote

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 06:38 PM.

  • Ask a Question
    get answers from real people!
Click to start entering your question.