Swany05 Posted January 21, 2016 Posted January 21, 2016 I had my 2008 Giant Anthem in for a strip down and check at my LBS in november last year, linkage bearings, shifter cables, sealant and headset bearings were replaced and the bike felt like new After my wash and lube this past saturday i noticed the suspension felt clunky (Again) and on closer inspection i found that that the right rear upper bearing was completely loose even though the bolt was as tight as it could go. Since the last service i have only done about 350kms i think. this seems very soon for bearing/s again. Provided the installation was done correctly and the bearings weren't cheap as chips chinese items how long should they last? i am not in the business of misery and thus do not wish to replace these items every 3 months. If that is the case id rather "down grade" to an cx type hardtail of sorts and have a clear mind albeit an uncomfortable one. Its not the cost but rather the down time of having the bike standing, i could do it myself but i do not have a puller/press, torque wrench or know how at this point. OR upgrade to the newer type frame moving all my parts across as i believe thats why they changed the design? correct me if im wrong...
JeremyCPT Posted January 21, 2016 Posted January 21, 2016 My Anthem carbon goes through the pivot bearings once or twice in a year.That is with about 8000km of riding and almost all of it off rode and on quite a lot of rough tracks.Therefore sounds like something was wrong in the service. Maybe wrong bearings or were they even replaced.Dont use the giant bearing kit. For about a quarter of the price you can get the bearings from a bearing specialist.
JeremyCPT Posted January 21, 2016 Posted January 21, 2016 Also, avoid high pressure washes like the plague. One way to eat bearings very quickly.
Swany05 Posted January 21, 2016 Author Posted January 21, 2016 Also, avoid high pressure washes like the plague. One way to eat bearings very quickly.Ill check with the LBS, he gave me the bearings that were replaced, dont doubt that it was done. No high pressure comes near my bike and i'm the only one that washed it. I use a gun that i put on a shower/soak type spray
Swany05 Posted January 21, 2016 Author Posted January 21, 2016 Oh and i also stumbled on a thread somewhere that mentioned the use of vesconite, now i happen to know of someone that is willing to to the lathe work for a case of beer, would this be a viable solution to the problems?
madbradd Posted January 21, 2016 Posted January 21, 2016 Vesconite is a bushing material... not sure whether or not it means replacing the bearings with bushings, but that sounds like a step backwards to me. Also vesconite machines really nicely but don't bank on cutting it with a hacksaw.... that's not gonna work so lekker.
Swany05 Posted January 21, 2016 Author Posted January 21, 2016 Well the bearing dont actually rotate as far as i can see but rather pivot a few degrees. so replacing with a vesconite bush and thrust washers should alleviate the maintenance part of the linkage. There wont be any short cuts in the process so the proper methods and tools will be used in fabricating the bushes
JXV Posted January 21, 2016 Posted January 21, 2016 Does your 2008 bike have ball bearings or bushes in that location. Some older bikes used bushes. This bearing/bush should not have collapsed so soon. It points to a faulty item or improper installation. Take it back to the lbs.
Swany05 Posted January 21, 2016 Author Posted January 21, 2016 Bearings where they have failed bike was returned yesterday, awaiting update
Mawbs Posted January 21, 2016 Posted January 21, 2016 your local LBS should be able to get them from Rush Sports
Tony datoy Posted January 21, 2016 Posted January 21, 2016 If a bearing is lose, there is most likely a spacer missing.LBS probably didn't put the spacer inT
Swany05 Posted January 22, 2016 Author Posted January 22, 2016 If a bearing is lose, there is most likely a spacer missing.LBS probably didn't put the spacer inTThis is what i thought, but doesn't seem like there is space for one and the other side that is still within spec doesn't have one either
madbradd Posted January 22, 2016 Posted January 22, 2016 Well the bearing dont actually rotate as far as i can see but rather pivot a few degrees. so replacing with a vesconite bush and thrust washers should alleviate the maintenance part of the linkage. There wont be any short cuts in the process so the proper methods and tools will be used in fabricating the bushes I think that's what makes it worse for a bushing (and why bearings replaced bushings in bicycle suspension systems). There's always that "breakaway" friction which needs to be overcome - when a bushing is moving already then it moves nicely. But when it goes from being stationary to moving, there's always that little bit of stiction. Having typed this I realise I'm talking about performance and you're talking about maintenance.
Swany05 Posted January 22, 2016 Author Posted January 22, 2016 Seems the ID of the linkage has somehow been stretched Dog bone sent to the engineers for shim or the like This will probably not be a permanent solution and a frame upgrade is inevitable or to find a replacement linkage
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