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Shimano 105 FD...install fail?

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Shimano 105 FD...install fail?

Old 06-19-20, 03:37 PM
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67tony
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Shimano 105 FD...install fail?

Something's not right, so says Captain Obvious!

The cable looks too close to the edge of the roller, assuming that's the correct cable route.
It will likely jump off under tension, and has done so during assembly trial shifts.

Speaking of tension, with Flight Deck brifters, the lever advance to send the FD outward gets very tight, and is barely able to move the FD.
Then, the little black paddle requires way too much pressure to drop the FD back down towards the seat tube.

The two issues are probably related, and I have likely does something way wrong.
I almost put this in the mechanics section, but figured here to be more savvy with this era.
(This is my first experience with brifters, and the FD is the 5500 model.)

Thanks in advance!


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Old 06-19-20, 05:00 PM
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Couple of questions... Is this a triple setup? Are the levers and FD 'triple' specific? Are the levers, FD and crankset all matching 105?

Unrelated, but might be related later for you- I had a DA triple FD, attempting to use it on a Sugino AT and Command Shifter= the FD didn't work worth a lick. I ended up having to get a double FD and it magically worked. The triple FD was really only made for working within it's own system... just like... Shimano stuff.
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Old 06-19-20, 05:16 PM
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Have you adjusted the throws before you laid cable? That cable should not be resting heavy on the plastic spring cover.
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Old 06-19-20, 05:22 PM
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Cable should go on the other outside of FD and attach on the outside. There is slight grove on the arm were the cable goes on the outer side which should make the cable line up nice with the BB cable guide.

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Old 06-19-20, 07:23 PM
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Originally Posted by The Golden Boy View Post
Couple of questions... Is this a triple setup? Are the levers and FD 'triple' specific? Are the levers, FD and crankset all matching 105?
Yes, this is a triple chainring setup. It's been a while since I bought it, but I'm almost sure the FD is a triple. The FD lever has 4 clicks extending the derailleur outward, and three clicks to retract. Does that make it a triple or a double?
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Old 06-19-20, 07:25 PM
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Originally Posted by 3speedslow View Post
Have you adjusted the throws before you laid cable? That cable should not be resting heavy on the plastic spring cover.
I'm not sure what you mean by the "throws"...
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Old 06-19-20, 08:15 PM
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Well, apparently my 5500 is a double, and a 5503 is for a triple.
https://si.shimano.com/pdfs/ev/EV-FD-5503-1737B.pdf

Not only do I feel like a dumb-ass, but now my build is paused while I search for a 5503.
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Old 06-19-20, 09:01 PM
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Originally Posted by 67tony View Post
Well, apparently my 5500 is a double, and a 5503 is for a triple.
https://si.shimano.com/pdfs/ev/EV-FD-5503-1737B.pdf

Not only do I feel like a dumb-ass, but now my build is paused while I search for a 5503.
Did You at least try routing the cable on the outside of the DR before going to a new FD I found these FD's work fine with both triples or extereme douples.
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Old 06-19-20, 09:10 PM
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Originally Posted by 67tony View Post
Well, apparently my 5500 is a double, and a 5503 is for a triple.
https://si.shimano.com/pdfs/ev/EV-FD-5503-1737B.pdf

Not only do I feel like a dumb-ass, but now my build is paused while I search for a 5503.
This goes to what I was getting at before- it might not work if it's not the right sized chainrings with the pins and ramps in the places the system wants them to be in.

If your FD has the range, the double FD will probably work better with an older crankset without ramped and pinned chainrings.
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Old 06-19-20, 09:10 PM
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It seems like this FD has enough travel for a triple, but there is only one way to route the cable...and it's just not right.
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Old 06-19-20, 09:20 PM
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IIR, the 5500 and 5503 were the same shift lever.

The cable IS routed correctly as shown.

Perhaps the hi-limit screw is too tight? (the hi-limit screw should NOT interfere with accessing all of the clicks in the outward direction).

Shimano triple front derailers are very specific as to the tooth-count difference between the middle and big ring. Perhaps no wonder that the Sugino AT crankset was a N/G.

Firstly, back off the hi-limit screw to allow free outward movement. Tighten down ONLY after completing the setup with cable tension working perfectly, but back off 1/4 turn from where the cage is out at the last click and with the chain just clearing the big-ring-small-cog gear ratio.

I usually begin by setting the outer cage plate 1mm above the teeth and parallel to the outer ring.
Then I put the chain on the small chainring and biggest cog, then adjust the lo-limit so the chain JUST clears the cage. Then pull the cable tight and tighten the screw.

Look on the back side of the derailer cage for the 5503 part number, should match the 5503 vintage of the 9s triple crankset.

Last edited by dddd; 06-19-20 at 09:23 PM.
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Old 06-20-20, 07:37 AM
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FWIW, I couldn't get a 105 FD to shift a triple (insufficient travel), and swapped in a 600 for the task.
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Old 06-20-20, 07:59 AM
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The difference between the 5500 and 5503 should be pretty obvious from the size of the inside plate. On the 5503(triple), it extends down much farther in order to shift better from the small chainring. I would guess the issue is that the 5500 is not intended to move so close to the seat tube, since the inner chainring of a double is not as close as on a triple. But I would first check that your chainline is correct for a triple and that your lower limit screw is in as far as possible while still being able to shift. That will get the DR as far as possible from the seat tube in the low position.
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Old 06-20-20, 08:30 AM
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Thanks for the great help and suggestions...

My crank set is an original 52/42/30, but my FD is the 5500 double. No amount of fiddling with limit screws, pins, and ramps will fix that. The pic below shows how the size of the inner plate is such that it does not accommodate a triple. That was a helpful well-worded tip by AeroGut.. Also informative was dddd's clear description of how he sets up a FD to begin with.

Anyway, I've instituted a search for the appropriate 5503 FD. I worked hard accumulating an entire 5500 group, so I'd love to land a 5503 but, in the meantime, what would be a workable (silver) 9-speed 105 alternative?

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Old 06-20-20, 08:33 AM
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Originally Posted by 67tony View Post
I'm not sure what you mean by the "throws"...
My bad, throw refers to the set limit screws.
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Old 06-20-20, 09:11 AM
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Originally Posted by 67tony View Post
Thanks for the great help and suggestions...

My crank set is an original 52/42/30, but my FD is the 5500 double. No amount of fiddling with limit screws, pins, and ramps will fix that. The pic below shows how the size of the inner plate is such that it does not accommodate a triple. That was a helpful well-worded tip by AeroGut.. Also informative was dddd's clear description of how he sets up a FD to begin with.

Anyway, I've instituted a search for the appropriate 5503 FD. I worked hard accumulating an entire 5500 group, so I'd love to land a 5503 but, in the meantime, what would be a workable (silver) 9-speed 105 alternative?
I would reconsider using a xx03 without being in a full system (shifters, derailleur and the correct crankset with the proper sized and ramped and pinned rings).

Check out these 2 posts from when I was putting together a triple with a DA 7803 FD.

https://www.bikeforums.net/19129624-post57.html

https://www.bikeforums.net/19160897-post78.html
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Old 06-20-20, 01:59 PM
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Well, my relative inexperience shows itself again...

While setting up the rear derailleur, I notice that the bare cable lying along the down tube did not look right.
Sure enough, the cable guide on the bottom of the BB was flipped the wrong way.
I thought I had taken notes, and was careful with re-installation, but obviously I was not careful enough!

So, to summarize, I not only had a double FD trying to travel triple distance, the cable for the FD was rising up at an improper angle.

Luckily, a board member remembers a 105 5503 at a local coop, and is checking it out for me.
Thanks, Andrew!
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Old 06-20-20, 07:53 PM
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Well one solution would be to go with a 90's XT MTB fd which are easily had and one would allow you to drop the adapter hanger and have much better cable routing..
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Old 06-20-20, 08:40 PM
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Originally Posted by zukahn1 View Post
Well one solution would be to go with a 90's XT MTB fd which are easily had and one would allow you to drop the adapter hanger and have much better cable routing..
The MTB front derailers won't work with the specific cable travel of a road STI lever. Derailer travel would come up seriously short.
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Old 06-22-20, 07:13 AM
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I pondered deleting this whole thread out of embarrassment, but of course did not due to all the great information it contains. I learned a lot, and probably some others did as well.

Thanks again to everybody who shared their expertise.
This forum is an impressive and valuable resource...and much appreciated!

Last edited by 67tony; 06-22-20 at 11:12 AM.
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