Sticking road caliper
Hello
My rear Tiagra rim brake caliper has been sticking recently, initially thought it was the cables but definitely the caliper as when cables are removed its the same.
I've took it apart, cleaned with WD40 and regreased. Didnt loose any bits, so the washers are in between the friction parts.
Now I've put back on the bike, it still sticks unless the bolt out to the left is backed off a lot. With it like this when the brake is applied it twists a fair bit which wasnt how it was last year/the front is now.
Any tips?
Dave
My rear Tiagra rim brake caliper has been sticking recently, initially thought it was the cables but definitely the caliper as when cables are removed its the same.
I've took it apart, cleaned with WD40 and regreased. Didnt loose any bits, so the washers are in between the friction parts.
Now I've put back on the bike, it still sticks unless the bolt out to the left is backed off a lot. With it like this when the brake is applied it twists a fair bit which wasnt how it was last year/the front is now.
Any tips?
Dave
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Comments
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if its had new inners, new outers, clean, strip down, regrease, properly rebuilt etc its probably funked.
hammer, fire, next door's garden, buy a new one for twenty quid.Postby team47b » Sun Jun 28, 2015 11:53 am
De Sisti wrote:
This is one of the silliest threads I've come across.
Recognition at last Matthew, well done!, a justified honoursmithy21 wrote:
He's right you know.0 -
Change the groupset for Dura Ace.
#prokit it's the only way in the first world0 -
Alejandrosdog wrote:Change the groupset for Dura Ace.
#prokit it's the only way in the first world
dura ace sticks as well, though its nicer when it works.0 -
Was expecting some banter on it being Tiagra, but not a full groupset upgrade
Will strip and build again, doesn't take long, then abort.
Dave0 -
hammer, fire, bin, Super Record
don't bother fitting anything made by Shimano - they make fishing equipment.
#PROlife
#doitproper
#prayforHaydenPostby team47b » Sun Jun 28, 2015 11:53 am
De Sisti wrote:
This is one of the silliest threads I've come across.
Recognition at last Matthew, well done!, a justified honoursmithy21 wrote:
He's right you know.0 -
david7m wrote:Was expecting some banter on it being Tiagra, but not a full groupset upgrade
Will strip and build again, doesn't take long, then abort.
Dave
My mechanic guru spent alot of time re-building and setting up the brakes on my bike. When he reassembled them, and before he fitted the spring arms in place (this was campag, I am assuming yours work in the same way), he only tightened up the centre nut to the point that the two arms of the caliper would fall 'closed' under gravity, i.e the centre bolt was not so tight that it held the two halves rigidly. Once the spring arms were engaged and the caliper fixed into the frame, the tension in the arms was as he wanted it in order to provide sufficient resistance to the cable.
Just a thought...Half man, Half bike0 -
Sounds good, I'll try it.
Cheers0 -
Ridgerider wrote:david7m wrote:Was expecting some banter on it being Tiagra, but not a full groupset upgrade
Will strip and build again, doesn't take long, then abort.
Dave
My mechanic guru spent alot of time re-building and setting up the brakes on my bike. When he reassembled them, and before he fitted the spring arms in place (this was campag, I am assuming yours work in the same way), he only tightened up the centre nut to the point that the two arms of the caliper would fall 'closed' under gravity, i.e the centre bolt was not so tight that it held the two halves rigidly. Once the spring arms were engaged and the caliper fixed into the frame, the tension in the arms was as he wanted it in order to provide sufficient resistance to the cable.
Just a thought...
or save time effort and frustration and buy a new one
#lifestooshort
#itsonlytiagra
#prayforHaydenPostby team47b » Sun Jun 28, 2015 11:53 am
De Sisti wrote:
This is one of the silliest threads I've come across.
Recognition at last Matthew, well done!, a justified honoursmithy21 wrote:
He's right you know.0 -
A full strip down and regrease should get it working again. When you reassemble, be careful not to overtighten the arm bolt (the one at the side holding the arms together). It can feel correct until the locknut is tightened, then it binds.
#tiagraisfine
#whywaste
#easyfix0 -
If it really is borked I have a pair of Tiagra 4500 calipers in my spares box, complete with a second set of slightly worn brake blocks.
I've only still got them because I think they are worth less than it would cost to post them to anyone...0 -
Also check the curves in the cable routing and the ends of the cable housing (ie having a clear opening). On my TT bike I was trying to have as few visible cables as possible, but this caused to many bends and tight turns causing a little sticking on the rear Dura caliper. It didn't stick fully but would slowly release. No one bend was causing sticking, but the overall friction was jut too much.0
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jermas wrote:A full strip down and regrease should get it working again. When you reassemble, be careful not to overtighten the arm bolt (the one at the side holding the arms together). It can feel correct until the locknut is tightened, then it binds.
#tiagraisfine
#whywaste
#easyfix
nah. SR all the way.
yes - Tiagra is fine. And thats it. Fine. Nothing special. Meh. Life is too short to have things that are "fine".
#boonendoesn'tusetiagra
#beboonen
#bePRO
#prayforHaydenPostby team47b » Sun Jun 28, 2015 11:53 am
De Sisti wrote:
This is one of the silliest threads I've come across.
Recognition at last Matthew, well done!, a justified honoursmithy21 wrote:
He's right you know.0 -
Ive got Tiagra, Ultegra and Dura Ace on various bikes (self builds, Im not that rich) and cant say the money for the top stuff warrants the performance improvements. Shifting and braking etc is slightly better, smoother etc but not massively. Plus, the Tiagra never complains about the s**t stuck in it from the winter weather! Dura ace is a little more picky!0
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Stripped down, cleaned and reassembled again.
Got it smooth when off bike, but didn't work when fitted. Took it off and backed off tension and refitted. This was probably the issue with first build as didn't do anything different.
Works a treat now
Dave0 -
Nicely done:)david7m wrote:Stripped down, cleaned and reassembled again.
Got it smooth when off bike, but didn't work when fitted. Took it off and backed off tension and refitted. This was probably the issue with first build as didn't do anything different.
Works a treat now
Dave0 -
Had a sticking Campagnolo caliper, the other day. Managed to sort it in-situ (well, I unscrewed it from the fork crown for fuller access) with Muc Off, water (cold) and a cassette brush to get into all the pivots. Worked it back and forth a handful of times and it seems okay.
Must have been a bit of grit as I was caught in shitty weather on the ride to work, that morning.Ben
Bikes: Donhou DSS4 Custom | Condor Italia RC | Gios Megalite | Dolan Preffisio | Giant Bowery '76
Instagram: https://www.instagram.com/ben_h_ppcc/
Flickr: https://www.flickr.com/photos/143173475@N05/0 -
oxoman wrote:Result plus you got the correct advice off here plus some banter. PS sora, cĺaris and tektro amongst others are below tiagra, they all the same job so ignore the snobs.
Yeah, I didn't mention the jagwire pads which were about £6 for front and rear, and I'm impressed!
Dave0 -
Ben6899 wrote:Had a sticking Campagnolo caliper, the other day. Managed to sort it in-situ (well, I unscrewed it from the fork crown for fuller access) with Muc Off, water (cold) and a cassette brush to get into all the pivots. Worked it back and forth a handful of times and it seems okay.
Must have been a bit of grit as I was caught in sh!tty weather on the ride to work, that morning.
Result!0
