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

Reply
 
Thread Tools Search this Thread
Old 07-29-11, 08:02 PM   #1
mynameistaken
Senior Member
Thread Starter
 
mynameistaken's Avatar
 
Join Date: Jul 2011
Bikes:
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What derailleur is this?

This is supposed to be a 105 5700. However it doesn't look like the ones on Shimano's website. I don't see any markings on it either. Can someone please verify that this is a 105?

mynameistaken is offline   Reply With Quote
Old 07-29-11, 08:09 PM   #2
desertdork
just pokin' along
 
desertdork's Avatar
 
Join Date: Aug 2008
Location: the desert
Bikes:
Posts: 1,073
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Possibly a R770. The backside of the inner cage plate should have the model # on it, e.g. FD-R770.

The R770 & R773 FDs were designed for 10-sp drivetrains in conjunction with Shimano's SL-R770 flat bar shifters. Is this a hybrid bike?
desertdork is offline   Reply With Quote
Old 07-29-11, 08:14 PM   #3
mynameistaken
Senior Member
Thread Starter
 
mynameistaken's Avatar
 
Join Date: Jul 2011
Bikes:
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes its a hybrid bike, and yes I looked where you said and it is a 770. Will a 105 work with flatbar shifters?
mynameistaken is offline   Reply With Quote
Old 07-29-11, 08:24 PM   #4
desertdork
just pokin' along
 
desertdork's Avatar
 
Join Date: Aug 2008
Location: the desert
Bikes:
Posts: 1,073
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've not tried those 770 shifters with a 105 derailleur, but the claim by Shimano is that the two will be incompatible. Does your FD-R770 need to be replaced?...or is this a type of upgrade? I ask because the 770 is a high quality derailleur.
desertdork is offline   Reply With Quote
Old 07-29-11, 08:33 PM   #5
mynameistaken
Senior Member
Thread Starter
 
mynameistaken's Avatar
 
Join Date: Jul 2011
Bikes:
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Actually you are right again! The 770 does at least cost more than the 105 a few places I checked. The reason I asked is because the bike I just purchased was advertised to come with the 105 5700. It works fine so I will leave well enough alone.

Thanks!!!!!
mynameistaken is offline   Reply With Quote
Old 07-29-11, 08:51 PM   #6
JiveTurkey
Low car diet
 
JiveTurkey's Avatar
 
Join Date: Aug 2007
Location: Corvallis, OR, USA
Bikes: 2006 Windsor Dover w/105, 2007 GT Avalanche w/XT, 1995 Trek 820 setup for touring, 201? Yeah single-speed folder, 199? Huffy tandem.
Posts: 2,407
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
That FD is a flat-bar road FD. It allows you to use flat-bar/MTB front shifter with larger road chainrings. Don't replace it with a regular road FD, like the 105, or its cable-pull ratio won't match to your shifter.
JiveTurkey is offline   Reply With Quote
Old 07-29-11, 08:51 PM   #7
desertdork
just pokin' along
 
desertdork's Avatar
 
Join Date: Aug 2008
Location: the desert
Bikes:
Posts: 1,073
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
FWIW, in your comparison, you shouldn't really judge the quality difference by the item price. I suspect that Shimano sells countless more 5700 FDs than R770 FDs, and either a higher price or lower profit will come with the smaller production. Regardless, the R770 I had was functionally and cosmetically equal to my Ultegra.
desertdork 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 02:21 PM.