nv said:Hi guys
I hope you don't mind some silly questions - I'm new to mountain biking.
My bike has 24 gears, which is good. But what do I do with them all?!
Right now I have the left shifter on 2 and I keep it there. I then shift
between 1 and 8 on the right shifter. I guess this is a really braindead
way to ride but it's all I can handle. I feel as though I'd be too busy
shifting to actually enjoy the ride if I started using all 24 speeds!
Also, when I change the left shifter to 1 something bad happens with the
chain and I have to shift back to 2 to recover. Sometimes, too, when I
shift on the right the shift doesn't go well and I get ominous clicking
noises from the back before it "bites". I'm sort of worried I'll be 3
miles from home and break the thing if I shift too much. Does something
need readjusting or is it me? 🙂
It's you. What is happening when you shift the left shifter to 1 is
that the angle of the chain from the cogs at the front to the cogs at
the back is at a real steep angle - the chain goes from the big cog at
the front to the biggest cog at the back. When shifting you should try
to choose combinations that keep the chain kinda parallel to the frame.
For example, the chain is on the small cog at the front and the big cog
at the back, or big at front and small at back so the chain goes nice
and straight like this
---------------------- .
You're making the chain go like this:
----
-----
------
-----
The chain can't shift properly over the cogs when it's at a sharp angle
and that is what is happening.
With 24 gears you only really use a few at a time. For example, when
the left shifter is on 1, use only 1-4 on the right shifter. When the
left is on 3, use 5-8 on the right shifter. This stops you getting the
chain confused. In reality, because you never use all the possible
combinations to avoid the problems that you are getting, your 24 speed
bike is actually closer to 12 speeds.
The ominous clicking that you get sometimes is when the chain is on the
verge of shifting up a gear and kinda lifts a little, catches a little
and then drops back down. You should find that one more click on the
shifter will make the bike change gears. It's likely that your gears
need a slight adjustment so that the chain sits nicely on each cog
without trying to "ghost shift". You can do this with the cable
adjuster knobs where the cable goes into the shifter or where the cable
goes into the derailleurs. It's likely that this will go away if you
learn to shift properly and avoid that left in 1/right in 8 technique too.
Quoted message said:
Finally, reading this forum I've heard talk of single speed mountain
bikes <drool>. But - well, how does that work? Wouldn't the rider of
such a bike be constantly slogging to get anywhere?
Yes they would be. But that's the point. Weirdos that they are... :-)
--
Westie