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7

That 1/2" is a pitch, ie. distance between 2 pins, which is standard on all bikes, expect, maybe, some super vintage ones. Just forget about it and pay attention to width (1/8 or 3/32").


3

The measurement is the distance between inner plates of the chain. If your cogs are thicker than 3/32", you need 1/8" chain. Traditionally track bikes have used wide chain, but since the 2000s there have been cogs at both widths.


1

As a general advice, do not use WD-40 on parts that are close to any ball bearings or other places that rely on grease to work poperly. WD-40 is excellent to use if you want to degrease some part as long as you wash away the WD-40 leftover with a real degreaser. It seems to be fairly easy to make the misstake to think WD—40 does lubricate and therefore it ...


6

Once I had a bike that suddenly was having the headset coming loose everyday. I had this headset/stem (the one on the left): Then I disassembled the fork and I discovered that the wedge was broken. Practically, I was only hours away from a crash. Important point: the wedge was all oxidated (inside) and rusty (outside, where in contact with the headtube). ...


5

I'm guessing that what you did was sprayed WD-40 on the area where the stem clamps to the steerer tube, because you were getting some creaks from that area. WD-40 is for water dispersal and consists of a light oil in a solvent. The solvent disperses the oil over whatever it's sprayed on and leaves a film that repels water. It also makes a sticky mess that ...


5

did you remove the bearings? if so are you sure you installed them correctly? Installing the bearing ball cages upside down can result in the bearing becoming loose prematurely. Make sure the 2 nuts with which you tighten the headset (I am assuming it's threaded) are properly seated against each other (to lock them in place on the steerer tube). The lock nut ...


15

Using WD40 on a headset should not cause it to loosen. Something else is wrong. You need to find out what that is. First - don't ride the bicycle until the problem is identified and fixed. Doing so might be dangerous - both to you and anyone near, as you may lose control. If your bicycle has a new-style "threadless" headset, the stem bolts may be ...


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