Shimano 105 Brifters
03-11-19, 12:28 PM
#1
Member
Thread Starter
Shimano 105 Brifters
Just purchased Marinoni Tourismo (2000) and the Shimano 105 (9 spd) brifters functionality is erratic, both L & R on up / down shifts.
Is there some simple trouble shooting or are they done?
Is there some simple trouble shooting or are they done?
03-11-19, 12:38 PM
#2
Senior Member
Join Date: Dec 2013
Location: Des Moines, Ia
Posts: 158
Bikes: Trek Domane 5.2, Trek 520, Surly Straggler, Trek Roscoe 8, Fisher HK2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
What do you mean by erratic? The first thing I would check is the adjustment of the derailleurs.
03-11-19, 01:09 PM
#3
Firm but gentle
If you carefully examine the action of the cable movement with each click you should easily be able discern if the brifter is at fault (doubtful). Cable tension is the first most likely culprit, cable drag, derailleur alignment. Youtube is your friend. Don't ride it at all until the shifting is perfect.
Last edited by venturi95; 03-11-19 at 01:11 PM. Reason: stuff
03-12-19, 09:10 AM
#4
Member
Thread Starter
Thanks - will check out in that order.
03-12-19, 11:31 AM
#5
SE Wis
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,509
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2746 Post(s)
Liked 3,390 Times
in
2,053 Posts
Do the flush & lube (look it up) and replace the cables and housings.
03-12-19, 02:11 PM
#6
Senior Member
Join Date: Jul 2007
Location: South shore, L.I., NY
Posts: 6,882
Bikes: Flyxii FR322, Cannondale Topstone, Miyata City Liner, Specialized Chisel, Specialized Epic Evo
Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 3238 Post(s)
Liked 2,084 Times
in
1,180 Posts
[QUOTE=venturi95;20833270
Don't ride it at all until the shifting is perfect.[/QUOTE]
Really ?.
I'd have about 1/3 the lifetime mileage if I'd never ridden until the shifting was perfect. Luckily one of my bikes is Di2 and the shifting is always perfect. LOL.
@OP. It's not life or death, but Venturi has it correct that the first culprit is cables, housing etc...
Don't ride it at all until the shifting is perfect.[/QUOTE]
Really ?.
I'd have about 1/3 the lifetime mileage if I'd never ridden until the shifting was perfect. Luckily one of my bikes is Di2 and the shifting is always perfect. LOL.
@OP. It's not life or death, but Venturi has it correct that the first culprit is cables, housing etc...
