mobi said:
What differentiates a good MTB from bad? Is it possible to judge the quality from short test ride?
Sorry to take so long to reply, when I went to do it the forum was out to lunch.
The simplest way to look at a bike is to see it as two parts. The frame, and everything else! The frame will largely dictate how the bike fits you and the quality of the ride, how stiff, comfortable, etc the bike feels. The component choice and quality will dictate how well the moving parts all work and how long they will last. Basically, better parts will be smoother and should last longer. They may well be lighter too.
Just about everybody uses components from the same, relatively small, group of manufacturers, Shimano, SRAM etc, and most bikes in a particular price bracket will have similar quality parts. What sets the better manufacturers apart is that their frames are better and they get the balance of components right. Poorer manufacturers often try to make their bikes look good in the showroom by fitting flashy looking parts on pig-heavy frames. If you go to
Halfords you will see full-suspension, disk brake, bikes costing £200. The truth is that a decent entry-level front suspension fork alone costs half that and so do disk brakes that will do more than give you nothing but trouble. The cheap forks on these bikes do nothing except add weight and take away control. You're far better off with a simpler, lighter bike with better quality parts.
Yes, you can tell a lot about a bike on a short ride. I would say that you want the bike to feel good straight away. Before riding the bike make sure the seat is at the right hight. When you're sitting on the bike with your heel on the pedal, with the pedal right at the bottom, there should only be a very slight bend in your knee. If you feel at home and the bike feels comfortable as soon as you start to ride it there's a good chance you'll enjoy it. Try a few different sizes too. Should you buy a bike and find that it's not quite right remember that you can change things like the saddle, handlebar stem and grips to help it fit you better. These things cost money though so you're better trying to get it as close as you can out of the box.
Look closely for bargains in the sales. For instance this bike cost £500 a few months ago, it's pretty good quality for £350:
http://www.edinburghbicycle.com/ebw...QRY=C106&f_SortOrderID=1&f_bct=c003155c002909
I'm not saying you should buy it, just an example of what you can find. There are lots of similar bargains to be had, let us know what you find :0)