Tiagra 47200 Front Shifter

[Arthur60]

Hi All,

I recently purchased a bike online. It's fitted with 10 speed Tiagra groupset. I've been setting up the shifters to my liking but have an issue with the front chainset shifter trim operation.

The front derailleur is a Tiagra with 2 chain ring Tiagra crank. The shifters seems to have the required clicks in it's operation. But after following the Shimano installation guide I can't seem to achieve any real movement on the derailleur on the small ring, even though the shifters clicks over.

Anyone have any thoughts?

Cheers,

Arthur

 

[raleighnut]

Hi All,

I recently purchased a bike online. It's fitted with 10 speed Tiagra groupset. I've been setting up the shifters to my liking but have an issue with the front chainset shifter trim operation.

The front derailleur is a Tiagra with 2 chain ring Tiagra crank. The shifters seems to have the required clicks in it's operation. But after following the Shimano installation guide I can't seem to achieve any real movement on the derailleur on the small ring, even though the shifters clicks over.

Anyone have any thoughts?

Cheers,

Arthur

Stops ? ...........................Will the mech move inward by hand or is it hard against the inner stop.

 

[Arthur60]

Hi. Thanks for the reply. Much seems to have free movement. Limit screws are set. I wonder if it's cable tension.

The installation guide says after setting the inner limit screw, pulled the cable and tighten the clamp. Then shift up to the large chain ring but on the trim setting, adjust cable tension so chain is clear of inner plate of derailleur, then shift out to set outer limit screw.

Then large ring trim works well, but then inner ring movement is an issue.

 

[fritz katzenjammer]

this works for me most of the time… ( I build new bikes for Trek )

assure the derailleur is aligned square to the chainwheels.

assure the lower edge of the derailleur is the correct clearance to the chainrings. when viewed from the side the lower edge of the cage should clear the teeth of the large chainring by about 2-3mm. ( 2x system, not 3x ) This is with the derailleur positioned over the smaller chainring. Almost every bike I see has this set too high brand new, right out of the box.

Put the rear derailleur in the largest cog position and the front derailleur over the small ring.

disconnect the cable to the front derailleur. Assure the inline cable adjusters are screwed all the way in.

adjust the stop till the front derailleur just clears the chain. 0-0.5mm clearance on the inside of the chain. Look from overhead.

assure the front shifter is in its lowest position.

attach the cable, pull it tight, you want as little play as possible.

assure the high limit is backed out a bit.

shift the rear derailleur to the smallest cog and the front to the large chainring. Highest position on the shifter, not high trim.

adjust the cable tension to get about 0.5-1.0mm between the outside of the chain and the inside of the derailleur. Looking from the rear is best, along the chain.

set the upper limit screw to just contact.

This pretty much works all of the time assuming everything is in good order to start with. You need a good smooth running front cable, if it’s old or kinked replace it.

It’s odd but I’ve found that with a good clean shifting set up with nothing dragging in any gear the derailleur doesn’t always have movement in both trim positions. At that point, if it works be happy with it.