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.
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Originally Posted by ddeand
(Post 22459269)
Can a D-A Front Derailleur (Shimano FD-710 8-sp) handle a triple chainring? Can't find any solid info on it.
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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.
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There is a 7700(9 speed)Dura Ace triple crankset. I don't know the model number, but there's a front and rear derailer to go with it.
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Thanks for the info! Appreciate the help.
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Originally Posted by Roger M
(Post 22459314)
There is a 7700(9 speed)Dura Ace triple crankset. I don't know the model number, but there's a front and rear derailer to go with it.
https://cimg4.ibsrv.net/gimg/bikefor...8e8da063b7.jpg |
Originally Posted by ddeand
(Post 22459269)
Can a D-A Front Derailleur (Shimano FD-7410 8-sp) handle a triple chainring? Can't find any solid info on it.
https://live.staticflickr.com/4646/3...b177c0b7_b.jpgIMG_1728 by Dave The Golden Boy, on Flickr |
Originally Posted by The Golden Boy
(Post 22459464)
For whatever it's worth- I could not get the DA 7803 to play nice on a 28-38-50 triple. So I used a regular, double, DA 7700 and it's fantastic. I've been using it in this application since 2016.
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Originally Posted by ddeand
(Post 22459269)
Can a D-A Front Derailleur (Shimano FD-7410 8-sp) handle a triple chainring? Can't find any solid info on it.
https://cimg7.ibsrv.net/gimg/bikefor...dca66de3fb.jpg https://cimg8.ibsrv.net/gimg/bikefor...16a9b63b11.jpg |
Originally Posted by The Golden Boy
(Post 22459464)
For whatever it's worth- I could not get the DA 7803 to play nice on a 28-38-50 triple. So I used a regular, double, DA 7700 and it's fantastic. I've been using it in this application since 2016.
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Originally Posted by bamboobike4
(Post 22460067)
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.
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 |
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." https://cimg2.ibsrv.net/gimg/bikefor...14d891ca04.jpg https://cimg9.ibsrv.net/gimg/bikefor...9a4b773053.jpg https://cimg3.ibsrv.net/gimg/bikefor...38c827d064.jpg |
Originally Posted by The Golden Boy
(Post 22460121)
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 |
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