Dura Ace RD-7402 + STI's or Bar Ends?
#1
Noob
Thread Starter
Join Date: Nov 2009
Location: Bay Area
Posts: 357
Bikes: '86 Schwinn Paramount
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 5 Times
in
3 Posts
Dura Ace RD-7402 + STI's or Bar Ends?
Hey fellas, I've been researching around a bike I picked up that was put together with various Dura Ace parts. It has:
8-spd RD-7402 rear derailleur
7-spd Sachs cassette on a DA hub (126 spacing?)
7-spd 105 downtube shifters set to friction
Reading through sheldonbrown's DA compatibility page, I learned that pre-97 DA stuff is picky. I want to try index shifting but according to the link, my pre-97 105 shifter wont work with the pre-97 rear cassette and derailleur set to index. Ok, I also learned I don't like downtube shifters very much so I want to try out index'd bar end shifters.
I read somewhere else that I could use any Shimano 9-spd shifter with the 740x series rear derailleur as long as I have an 8-spd rear hub/cassette to shift index'd. That's where I'm confused. I don't know what rear wheel/hub/cassette will work! Would I have to look for pre-97 8-spd Dura Ace hub/cassette? Would post-97 8-spd work? I know I will definitely have a rear spacing issue but 126-130 isn't that much right?
So the question is this: Do I need pre-97 Dura Ace 8-spd hub/cassette or post-97 shimano 8-spd to work with RD-7402 and 9-spd shifter to shift index? THanks guys!!
BTW, I can't find 7-spd Dura Ace downtube shifters period. I'm thinking they would cost alot due to being "vintage DA". Plus, I really wouldn't mind going 8-spd with a possibility of upgrading to STI later down the line. Thanks again everyone
8-spd RD-7402 rear derailleur
7-spd Sachs cassette on a DA hub (126 spacing?)
7-spd 105 downtube shifters set to friction
Reading through sheldonbrown's DA compatibility page, I learned that pre-97 DA stuff is picky. I want to try index shifting but according to the link, my pre-97 105 shifter wont work with the pre-97 rear cassette and derailleur set to index. Ok, I also learned I don't like downtube shifters very much so I want to try out index'd bar end shifters.
I read somewhere else that I could use any Shimano 9-spd shifter with the 740x series rear derailleur as long as I have an 8-spd rear hub/cassette to shift index'd. That's where I'm confused. I don't know what rear wheel/hub/cassette will work! Would I have to look for pre-97 8-spd Dura Ace hub/cassette? Would post-97 8-spd work? I know I will definitely have a rear spacing issue but 126-130 isn't that much right?
So the question is this: Do I need pre-97 Dura Ace 8-spd hub/cassette or post-97 shimano 8-spd to work with RD-7402 and 9-spd shifter to shift index? THanks guys!!
BTW, I can't find 7-spd Dura Ace downtube shifters period. I'm thinking they would cost alot due to being "vintage DA". Plus, I really wouldn't mind going 8-spd with a possibility of upgrading to STI later down the line. Thanks again everyone
Last edited by THEJAPINO; 06-30-10 at 08:45 PM.
#2
sultan of schwinn
Join Date: Sep 2009
Location: Lehigh Valley, PA
Posts: 3,536
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 15 Times
in
9 Posts
Let's assume that you keep your RD.
you need: a different freewheel (I suspect that the Sachs is a freewheel). Any 7 speed Sante 54xx or 600 Ultegra 64xx or 105 105x will do. Also need Dura Ace 7 sp DT shifters (74xx) and maybe a different chain. That Sachs will not index well with that era Shimano 7 sp...
you need: a different freewheel (I suspect that the Sachs is a freewheel). Any 7 speed Sante 54xx or 600 Ultegra 64xx or 105 105x will do. Also need Dura Ace 7 sp DT shifters (74xx) and maybe a different chain. That Sachs will not index well with that era Shimano 7 sp...
#3
Noob
Thread Starter
Join Date: Nov 2009
Location: Bay Area
Posts: 357
Bikes: '86 Schwinn Paramount
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 5 Times
in
3 Posts
Thanks EjustE. The problem I'm having is actually finding a 7 sp Dura Ace DT shifter set. If I can find some that wont make me broke, I may just learn to love downtube shifting. Going 8 sp may mean buying more parts but if it will give me more indexed shifting options (bar-end, STI), I'm willing to try it out.
#4
sultan of schwinn
Join Date: Sep 2009
Location: Lehigh Valley, PA
Posts: 3,536
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 15 Times
in
9 Posts
Thanks EjustE. The problem I'm having is actually finding a 7 sp Dura Ace DT shifter set. If I can find some that wont make me broke, I may just learn to love downtube shifting. Going 8 sp may mean buying more parts but if it will give me more indexed shifting options (bar-end, STI), I'm willing to try it out.
#5
Noob
Thread Starter
Join Date: Nov 2009
Location: Bay Area
Posts: 357
Bikes: '86 Schwinn Paramount
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 5 Times
in
3 Posts
EjustE, thanks again. I'm still weighing out my options on this build. I like friction shifting but I really don't feel to comfortable with DT shifters. I may try friction bar-end shifters to see if I like that. Thanks for the feedback!
link to DA 7sp dt shifters please???
link to DA 7sp dt shifters please???