D-A Front Derailleur Range ?
#1
Senior Member
Thread Starter
Join Date: Jul 2004
Location: Twin Cities
Posts: 927
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Liked 102 Times
in
46 Posts
D-A Front Derailleur Range ?
Can a D-A Front Derailleur (Shimano FD-7410 8-sp) handle a triple chainring? Can't find any solid info on it.
__________________
Some days, it's not even worth gnawing through the restraints.
Some days, it's not even worth gnawing through the restraints.
Last edited by ddeand; 04-02-22 at 09:38 AM.
#2
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 17,980
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10435 Post(s)
Liked 11,912 Times
in
6,100 Posts
You mean FD7410? It's not designed for triples. I suspect the cage isn't long enough to handle one.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
Likes For genejockey:
#3
Senior Member
Join Date: Nov 2004
Posts: 23,223
Mentioned: 654 Post(s)
Tagged: 1 Thread(s)
Quoted: 4722 Post(s)
Likes: 0
Liked 3,038 Times
in
1,876 Posts
The cage of the FD-7410 was only designed to handle a chainring range of 15T, so it's not really appropriate for a triple, even if it had the cage throw. Shimano's triple compatible, road front derailleurs from this era were the FD-A553 (RX100) and FD-A410 (RSX), which had chainring ranges of 26T and 20T, respectively.
Likes For T-Mar:
Likes For Roger M:
#6
Senior Member
Join Date: Nov 2004
Posts: 23,223
Mentioned: 654 Post(s)
Tagged: 1 Thread(s)
Quoted: 4722 Post(s)
Likes: 0
Liked 3,038 Times
in
1,876 Posts
Likes For T-Mar:
#7
Extraordinary Magnitude
Join Date: Aug 2009
Location: Waukesha WI
Posts: 13,648
Bikes: 1978 Trek TX700; 1978/79 Trek 736; 1984 Specialized Stumpjumper Sport; 1984 Schwinn Voyageur SP; 1985 Trek 620; 1985 Trek 720; 1986 Trek 400 Elance; 1987 Schwinn High Sierra; 1990 Miyata 1000LT
Mentioned: 84 Post(s)
Tagged: 0 Thread(s)
Quoted: 2608 Post(s)
Liked 1,703 Times
in
937 Posts
IMG_1728 by Dave The Golden Boy, on Flickr
__________________
*Recipient of the 2006 Time Magazine "Person Of The Year" Award*
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
#8
Senior Member
Join Date: May 2013
Location: Pacific Northwest
Posts: 1,990
Bikes: ‘87 Marinoni SLX Sports Tourer, ‘79 Miyata 912 by Gugificazione
Mentioned: 166 Post(s)
Tagged: 0 Thread(s)
Quoted: 502 Post(s)
Liked 466 Times
in
256 Posts
I’ve encountered similar problems with recent Shimano triple FD’s (those with that deep squarish inner cage plate like the 7703 shown above) with triple cranks having other than the design ring difference. That inner cage plate hits the middle ring unless the FD is adjusted too high. No such problems with my trusty Campy Racing T FD’s.
Likes For Dfrost:
#9
Senior Member
#10
Banned.
Join Date: Jan 2022
Posts: 1,070
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 359 Post(s)
Liked 582 Times
in
336 Posts
Shimano made a triple FD with a 50T max limit. It works great on compact triples. They used it on the hybrid 10-speed triples in the early 2000’s. I think it’s an FD-730. Identical to the 7703 but the cage is for a smaller diameter set of rings.
Likes For bamboobike4:
#11
Extraordinary Magnitude
Join Date: Aug 2009
Location: Waukesha WI
Posts: 13,648
Bikes: 1978 Trek TX700; 1978/79 Trek 736; 1984 Specialized Stumpjumper Sport; 1984 Schwinn Voyageur SP; 1985 Trek 620; 1985 Trek 720; 1986 Trek 400 Elance; 1987 Schwinn High Sierra; 1990 Miyata 1000LT
Mentioned: 84 Post(s)
Tagged: 0 Thread(s)
Quoted: 2608 Post(s)
Liked 1,703 Times
in
937 Posts
If anyone wants to pore through my attempts when I built my Trek 720- you can see where I went back and forth using different derailleurs, getting another chainring, TRYING to go back to the DA triple derailleur, failing- going to another derailleur- but *REALLY* wanting a DA derailleur on there... then finding the double 7700 works perfectly...
https://www.bikeforums.net/classic-v...e-rebuild.html
__________________
*Recipient of the 2006 Time Magazine "Person Of The Year" Award*
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
Likes For The Golden Boy:
#12
Banned.
Join Date: Jan 2022
Posts: 1,070
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 359 Post(s)
Liked 582 Times
in
336 Posts
Are you thinking of the CX70? That's the unit that gets used and talked about for road-ish triples.
For a while I thought it was a 7730, but closer inspection indicated FD-730.
Not a 7703, either, but holding the two together reveals little differnce.
There was a sticker on the back that said "50T MAX."
#13
ambulatory senior
Join Date: Dec 2016
Location: Peoria Il
Posts: 5,998
Bikes: Austro Daimler modified by Gugie! Raleigh Professional and lots of other bikes.
Mentioned: 76 Post(s)
Tagged: 0 Thread(s)
Quoted: 1955 Post(s)
Liked 3,661 Times
in
1,679 Posts
Are you thinking of the CX70? That's the unit that gets used and talked about for road-ish triples.
If anyone wants to pore through my attempts when I built my Trek 720- you can see where I went back and forth using different derailleurs, getting another chainring, TRYING to go back to the DA triple derailleur, failing- going to another derailleur- but *REALLY* wanting a DA derailleur on there... then finding the double 7700 works perfectly...
https://www.bikeforums.net/classic-v...e-rebuild.html
If anyone wants to pore through my attempts when I built my Trek 720- you can see where I went back and forth using different derailleurs, getting another chainring, TRYING to go back to the DA triple derailleur, failing- going to another derailleur- but *REALLY* wanting a DA derailleur on there... then finding the double 7700 works perfectly...
https://www.bikeforums.net/classic-v...e-rebuild.html