Tiagra 4700 cross compatibility with Sora R3000
09-24-19, 06:05 PM
#1
Senior Member
Thread Starter
Join Date: Dec 2015
Location: Buffalo, NY
Posts: 619
Bikes: Kona Kahuna DL Drop Bar - Sensah SRX Pro 1x11 (2012 Frame), Giant Toughroad GX 1 - Shimano Road Hydro + SLX 1x10 (2018), Diamondback Sync'r - SRAM NX 1x12 (2020)
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 160 Post(s)
Liked 97 Times
in
54 Posts
Tiagra 4700 cross compatibility with Sora R3000
After replacing my Toughroad with hydraulic shifters I’m left with my og Tiagra shifters. The Poseidon X that I am building up I originally planned on swapping all my parts from my Nashbar CX bike which had Sora R3000 shifters and derailleurs.
I already tried to get the shifters to work and it does *sorta* work, however I believe the 9 speed chain is definitely too big for the 10 speed cassette. That being said, is there any reason (I’m thinking pull ratio, which I don’t know what the ratios are) that this shouldn’t work?
I already tried to get the shifters to work and it does *sorta* work, however I believe the 9 speed chain is definitely too big for the 10 speed cassette. That being said, is there any reason (I’m thinking pull ratio, which I don’t know what the ratios are) that this shouldn’t work?
09-25-19, 05:24 AM
#2
Senior Member
Join Date: Jan 2013
Location: South Jersey
Posts: 2,261
Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 713 Post(s)
Liked 796 Times
in
473 Posts
Tiagra 4700 uses the same cable pull as road 11 speed, so you'll need an 11 speed road rear derailleur or your Tiagra 4700 rear derailleur. Your Sora 3000 Rear derailleur won't work with the Tiagra 4700 shifter.
It sounds confusing, but the 4700 uses the same cable pull as 11 speed to shift 10 cogs.
It sounds confusing, but the 4700 uses the same cable pull as 11 speed to shift 10 cogs.
09-25-19, 08:04 AM
#3
Senior Member
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Posts: 5,773
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 453 Post(s)
Liked 104 Times
in
87 Posts
Why? you are trying to mix 9 and 10-speed road, which, leaving out the additional complexity of the 4700 shifter pull, never worked in the first place.
Compatibility (with the exception of 4700) is within speeds, go try to mix 2 different speeds, and you have no compatibility, as you appear to be finding out.
Compatibility (with the exception of 4700) is within speeds, go try to mix 2 different speeds, and you have no compatibility, as you appear to be finding out.
09-25-19, 12:13 PM
#4
Senior Member
Join Date: May 2003
Location: Mountain Brook. AL
Posts: 4,002
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 303 Post(s)
Likes: 0
Liked 136 Times
in
104 Posts
IME a 9spd chain will work on a 10spd cassette IF the cassette does not have any single step jumps from cog to cog (ie 11->12 or 13->14).
Single step differences are close enough that the next cog grabs the rivet of the chain and attempts to pull it up but the shift is never completed
and the result is a jerky drive. However cassettes with at least a 2 tooth jump cog to cog are enough larger cog to cog that the chain stays
where it is put.
Single step differences are close enough that the next cog grabs the rivet of the chain and attempts to pull it up but the shift is never completed
and the result is a jerky drive. However cassettes with at least a 2 tooth jump cog to cog are enough larger cog to cog that the chain stays
where it is put.
