ridle278fj
Dołączył: 14 Mar 2011
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 Wysłany: Czw 7:11, 14 Kwi 2011 Temat postu: nike air max 95 Mountain Bike Repair on the Trail |
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Bicycle Chain Break
Damaged Mountain Bike Tyres
Some issues will render the bike unrideable, others less useable or less safe to ride, whilst many problems can be easily fixed. An appreciation of the most likely scenarios and how to fix them is therefore useful.
Bicycle Punctures
Modern mountain bikes are robust and with proper servicing will give years of trouble-free riding. Out on the trail [link widoczny dla zalogowanych], however, things can still go wrong and it is impossible to carry all the necessary tools to solve every potential problem.
Modern wheels are robust and, with proper maintenance, should not fail on the trail. If, however, a rider crashes or hits a large obstacle in the track the wheel can become buckled. It is possible to straighten or “true” the wheel by tightening or loosening spokes and a spoke key is an essential tool for this option. A spoke can also be replaced if it snaps so carry a spare.
Bicycle Brake Pad Wear
It is not sensible to carry a spare tyre as they rarely disintegrate on the trail. They can [link widoczny dla zalogowanych], however [link widoczny dla zalogowanych], get torn or ripped leaving the inner tube exposed and more likely to be punctured. A lightweight, cheap and simple solution is to carry a small flat piece of flexible plastic cut from a margarine tub which can be put on the inside of the tyre wall adjacent to the tear, protecting the inner tube.
The rear derailleur on most mountain bikes is a very exposed component. A fall can result in the bending or even snapping of the mounting bracket (the mech hanger) onto which the gear shifting mechanism attaches. The bracket can be bent back into shape but take care with fragile aluminium components.
Loose Bike Parts
Punctures are the most common problem on the trail and are easy to fix. It is possible to repair the tube on the trailside but a simpler option is to carry a spare inner tube, a set of tyre levers and a pump to re-inflate the tyre. Whilst carrying a small puncture repair kit as an alternative will save weight and bulk, inner tubes can split and a patch may not be big enough to repair the damage so carrying a spare tube is a must.
Occasionally a brake pad will disintegrate to the extent that it is unusable. A cyclist should carry a spare set of pads and have the knowledge to change the pads on their own bike.
Cables can fray and break on the trail. The bike will still be rideable with a broken cable but will be less useable or safe. It is therefore sensible to carry spare cables.
Read on
How to Stop Gears Slipping on a Mountain Bike
Bike Maintenance Toolkit for Home Servicing
Mountain Bike Parts and What They Mean
Replaceable mech hangers are small and lightweight and can be carried in the rider's pack. The hangers are bolted to the frame using a hexagonal bolt and the only tool required is the correct sized hexagonal wrench. If the gear hanger cannot be replaced, just turn the bike into a single speed to get home.
Some components can work loose on the trail. Crank arms, handlebars, stems, chain rings and saddles are all held to the bike by hexagonal bolts. A mountain biker is well advised to carry a small tool kit with th
Mountain Bike Wheel Damage
Brake or Gear Cable Failure
Rear Derailleur Damage
Chains are incredibly strong but can sometimes break. Spare chains are heavy to carry so a better option is to carry a chain tool. This small lightweight device allows a rider to remove the damaged link from the chain and then reconnect the two undamaged ends to form a continuous loop. The chain will be shorter after the repair and gear shifting may not be as efficient but the bike will be rideable.
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