As a cycling newbie with no knowledge of bike - mechanics (I've not owned a bike since my youth) I purchased an ex-rental 2013 Trek 7.2 FX from my LBS a few days ago. I collected the bike from the store the day after purchase as I was told that a) the rear rack needed to be removed as it did not come with the bike, and b) they would service the bike for me.
When I eventually got the bike home however I've discovered several problems with the bike.
(1) The front mudguard / fender was rubbing against the front tire for the complete revolution of the front wheel. I noticed this at the bike shop when I was there and pointed it out to the assistant. He suggested it was something to do with quick-release stays. I seems to me now that this was a nonsense as there doesn't appear to be any quick-release feature to the stays (and why would there be?). Nevertheless it wasn't important to me at the time as I lacked any technical knowledge and fully expected the problem to be fixed when I picked up the bike.
As it turned out I fixed the problem myself. One of the stays was slightly bent which pulled the fender to one side, but it was still possible to adjust their length to resolve the problem.
I cannot however understand how a LBS could both service a bike and either fail to notice a fender rubbing against a tire or to regard the problem as so negligible such that they just ignored it. Is this normal?
(2) Once of the front brake pads was rubbing against the rim for a small portion of the wheels revolution.
Although a total noob, I decided to research this problem myself and learn how to adjust single-pull v brakes. Although I seem to have successfully fixed it now, in so doing I noticed that the wheel was not 100% true. Of course no wheel will ever be perfect, and the buckle that this one has is so minor that I can only detect it visually by getting up close and paying attention to the distance between the pad and the rim as the wheel turns. There's a movement of maybe 0.5mm, maybe less.
Is this type of "buckle" within the tolerances of what in practice can be regarded as a true wheel alignment, or is it something that the LBS should have fixed?
Is it normal for a LBS to service a bike and yet not properly adjust brakes such that the brake-pad doesn't rub against the rim?
disclosure: I removed and re-attached the quick release front wheel before having a chance to check-notice this problem. I believe I did so correctly though such that this wasn't the cause of the rubbing.
(3) When down-shifting, the rear derailleur jumps two or three sprockets / gears. Upshifting is fine.
I tried to resolve the problem by turning the barrel-adjuster anti-clockwise (it was already turned clockwise as far as it would go). This didn't seem to have any effect.
I can't detect any warping of the derailleur, but can't be confident that my very untrained eye would be able to anyway.
The b-tension screw was tightened as far as possible such that it was in contact with the frame / dropout. The installation manual for the derailleur however states that "When installing, be careful not to let the B-tension adjustment screw come into contact with the dropout tab, otherwise deformation may result." What am I to make of this? Is this significant and something I should be worried about?
Is it normal for a LBS to service a bike and yet not ensure the gears are properly adjusted? Is it possible to service a bike and not notice a problem such as this one.
I've other minor gripes such as not getting a manual with the bike even though it's a Trek dealership and the manual states that "This manual is considered a part of the bicycle
that you have purchased. If you sell the bike, please give this manual to the new owner." Basically however I'm just not sure what I should have expected when they told me they were going to service the bike. Although it wasn't dirty when I got it, I noticed that it hadn't been cleaned. This didn't bother me and I just assumed that cleaning an already relatively clean bike wasn't perhaps something to be expected from a service.
Badly adjusted brakes, gears, and fenders are however something that I did expect a service to fix. The fact that they weren't leads me to suspect that they didn't bother to service the bike at-all. Is this a reasonable conclusion to come to? Should I complain, and if so what should I say?