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


Go Back   > >

Long Distance Competition/Ultracycling, Randonneuring and Endurance Cycling Do you enjoy centuries, double centuries, brevets, randonnees, and 24-hour time trials? Share ride reports, and exchange training, equipment, and nutrition information specific to long distance cycling. This isn't for tours, this is for endurance events cycling

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-23-17, 07:27 AM   #51
Barrettscv 
Have bike, will travel
 
Barrettscv's Avatar
 
Join Date: Feb 2006
Location: Edwardsville, Illinois
Bikes: De Rosa Professional, Eddy Merckx Corsa Extra, Pinarello Gavia, Schwinn Paramount, Motobecane Grand Record, Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Raleigh Roker, Origin8 monstercross, Pedal Force CG2 and CX2
Posts: 11,479
Mentioned: 25 Post(s)
Tagged: 0 Thread(s)
Quoted: 458 Post(s)
Quote:
Originally Posted by joewein View Post

At 9 speed, road and MTB are fully interchangeable, any shifter will work with any derailleur. 10-speed road shifters will work with a 10 speed cassette, using a either a 9 or 10 speed road RD or a 9 speed MTB RD. The only thing 10 speed road shifters won't work with is a 10 speed MTB RD.
While the above is generally true, the current generation Tiagra 10-speed 4700 & 4703 is an exception to this rule and are not compatible with prior Shimano 10-speed components. The prior generation Tiagra 10-speed 4600 & 4603 is the most recent Shimano 10-speed group that is compatible with older 10 & 9 speed road and 9 speed mountain drivetrains.
__________________
When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.

Last edited by Barrettscv; 11-23-17 at 07:38 AM.
Barrettscv is offline   Reply With Quote
Old 11-23-17, 10:19 AM   #52
joewein
Senior Member
 
joewein's Avatar
 
Join Date: Oct 2011
Location: Tokyo, Japan
Bikes: Elephant Bikes National Forest Explorer, Bike Friday Pocket Rocket
Posts: 399
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Quote:
Originally Posted by Barrettscv View Post
While the above is generally true, the current generation Tiagra 10-speed 4700 & 4703 is an exception to this rule and are not compatible with prior Shimano 10-speed components. The prior generation Tiagra 10-speed 4600 & 4603 is the most recent Shimano 10-speed group that is compatible with older 10 & 9 speed road and 9 speed mountain drivetrains.
Correct, thanks for pointing that out!

Apparently, Tiagra 4700 has a cable pull of 2.8 mm, which is the same as Shimano 8 speed. The 4700 RD actuation ratio (cog spacing to cable pull ratio) seems the same as Shimano 11 sp which has 2.7 mm of cable pull but also proportionally closer cog spacing.

So the only RDs that will work with Tiagra 4700 shifters are:
  • 4700 RDs (obviously)
  • (if you're willing to sacrifice two gears, but there's no real point): Shimano 8, 9 or 10 speed (except-4700) RD with Shimano 8 speed cassette
  • Shimano 5800/6800 RD with 10 speed cassette

Last edited by joewein; 11-23-17 at 10:32 AM.
joewein 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 03:08 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    get answers from real people!
Click to start entering your question.
I HAVE A QUESTION