Front derailleur help
10-17-20, 07:13 PM
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Front derailleur help
Having a hard time getting my front derailleur dialed in. Its a 2x10 shimano tiagra 4700 along with the shifters. I drop the front to the smallest and the rear to the largest. I loosen the bolt and pull the cable, tighten back down. Set the limit for this. It will smoothly and quickly shift to the larger chain ring but I cannot get the chain to not rub the derailleur. I have detached the derailleur and checked alignment and distance from cogs. Any help would be great, cause next step is to burn the bike down. 😄
10-17-20, 07:24 PM
#2
V8s all day
After loosening the bolt, do not bolt the cable down just yet. Adjust the lower limit screw so that the inner part of the cage is barely touching the chain. Now, pull the cable tight and bolt down. Try shifting into the big ring; adjust accordingly with the outer limit screw.
10-17-20, 08:18 PM
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Agreed that the new generation of Shimano ft ders need fairly high cable tension. Doing what primov8 says is one way to end up with a tight cable. Is there a cable adjusting device in the system? Andy
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10-17-20, 08:23 PM
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Originally Posted by Andrew R Stewart
Agreed that the new generation of Shimano ft ders need fairly high cable tension. Doing what primov8 says is one way to end up with a tight cable. Is there a cable adjusting device in the system? Andy
11-07-20, 09:08 PM
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So Im having issues still...... out riding today and dropped to my lower front chain ring. Could not get back onto the large chain ring. If I adjust my derailleur any further ill rub in my small front big rear. If it helps im running a 46-30 adventure crankset, tiagra front derailleur, shimano 11-35 cassette and a GRX rear derailleur along with tiagra STIs.
11-08-20, 10:42 AM
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Are you using a double or triple FD? I'm wondering if the cage shape is not ideal for the smaller chainrings. Most road FDs are shaped for 50-53 teeth outer rings.
11-08-20, 10:50 AM
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Originally Posted by Chris!
So Im having issues still...... out riding today and dropped to my lower front chain ring. Could not get back onto the large chain ring. If I adjust my derailleur any further ill rub in my small front big rear. If it helps im running a 46-30 adventure crankset, tiagra front derailleur, shimano 11-35 cassette and a GRX rear derailleur along with tiagra STIs.
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Stuart Black
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Days of Wineless Roads. Bed and Breakfasting along the KATY
Twisting Down the Alley. Misadventures in tornado alley.
11-08-20, 06:56 PM
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Its actually an old cable, about 2 years old. Got maybe 2k on it. Thinking maybe next ill replace that and see how it goes.
