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Chainrings are special wear items in that they can be used even if severely visibly worn. It is very typical of used chainrings to show wear in the points that transmit forces, being a visibly different location than the points that don't transmit forces. In some chainrings, it is possible to "rotate" the chainring on the crankset to even out the ...


5

As with most things in cycling, its probably a metric M5 x 0.8 bolt in the bottle cage mounts. There's a small chance its a M4 x 0.7 if its a fancy race bike, or an imperial thread if it is older than the 80's Coincidentally this M5 thread is the same as a cleat bolt on most clipless shoes. Your other mount holes are probably the same M5, though some ...


1

The lever stopping with a firm bite with 2cm to the bar on an Elixir does not necessarily indicate you could do better. Firm means there is no significant amount of air between the master cylinder and the caliper. Those two things can't be true at the same time. Even if a seal leak was somehow pulling in air from outside when you bleed the lever, and even if ...


1

The operation is easiest using the Avid/SRAM "pro" bleed kit because the syringes seal very well into the bleed ports. The kit is expensive and overkill if you are not a shop. Instead of sucking the top end, you will still get a good result by pushing the fluid up from the bottom provided you have good air free fluid in the syringes. Fix off the ...


5

The key is to identify the source of the oil. Some Dawes Discovery 301s have V brakes and others have hydraulic. If you have hydraulic brakes it's possible the oil could be coming from your brakes but it's unlikely to have been happening over the length of time described without noticing a reduction in braking power. It's difficult to say with accuracy based ...


6

The most common places where there is a chance of liquid oil getting out in bicycles are: suspension fork, rear damper, and hydraulic brakes. The bike you mention, however, does not have suspension, but does have hydraulic brakes. Could that be brakes? Have you noticed any change in braking action recently? Another possibility is that the contamination is ...


8

Inner cables tend to break relatively early after ~5000km depending on circumstances and how much you shift. I think it got worse with modern shifters with cable housing below the handlebar tape. The cable starts to break and fray inside the shifter. Usually you notice because the rear derailleur doesn’t shift to the smallest sprockets anymore and it gets ...


1

The first thing you'd want to do is test ride a bike, and it doesn't have to be one that you plan to buy. If you're completely new to bicycling, then I'd suggest buying yourself a helmet (I like the MIPS helmets) and then borrowing a friend's bike to test out - this goes for an e-bike/road/mountain/city - anything that's new to you, try to borrow one from a ...


1

With a new bike, the likeliest explanation for excessive chain noise is the indexing of the gears being a bit off. This is easily remedied by manipulating the barrel adjuster at the shifter. This is a round, barrel shaped piece of the shifter at the point where the cable exits the shifter. Clockwise turning of the adjuster results in lower cable tension and ...


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