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Second Hand Mountain Bike - a Buyers Guide

Good mountain bikes these days are by no means cheap. However, a knock-on effect of their expense is that they are being built with much stronger and more durable materials, meaning there are literally thousands of great second-hand bikes out there for a fraction of the cost of a new one. You just need to know what to look for.

There are usually many elements to a second-hand mountain bike and each bike tends to vary in its make-up. Outlined here are the key points to look out for on the more common components.

Wheels

Turn the bike upside-down and check the condition of the rims. Look out for dents or fractures in the metal and spin both wheels to see if they run true. Any problems with the rims will hinder performance and might mean you'll need to fork out for a new pair straight away. Check each spoke individually for tightness or damage. Spokes can be tightened or replaced easily but loose spokes can be an indication of a misshaped wheel. When spinning the wheels, pay attention to how the bearings function. The wheels should spin almost silently and with very little resistance. Any noise or resistance to the wheel turning could be a problem with the bearings and may mean they need replacing.

Brakes

There are a number of different types of brake used on modern bikes but they all do the same job, so the best way to test them is to get on the bike and use them to stop. Use both brakes individually in order to highlight any problems and look out for weak braking power, excessive noise, shuddering or having to use a lot of hand force to engage the brakes. Also check the brake cables for any fraying or splitting...any damage to the cables can spell trouble for braking power, especially for hydraulic brake reservoirs, so give them a good inspection. To be honest, most problems can be corrected by making small adjustments but be prepared to pay for new cables, pads, levels and even brake-sets if there is significant wear/damage

Frame

Arguably the most important part of the bike to inspect. Almost every frame is different but there are common elements that should be checked. First examine the welds in the frame. Are the any cracks or clear weak spots? How about the top tube and down tube, are they in good condition? Don't be afraid to apply a reasonable amount of force to each part of the frame, it should be able to hold up to a lot and if you see any weakness or excessive movement then the frame is severely compromised. In some instances the frame can be re-wielded or strengthened but it's unlikely to be worth your time and there are plenty more bikes in the sea. The general condition of the frame should be good. If there are lots of dents or nicks in the frame it may suggest the bike's had a lot of use or has been badly treated.

Saddle

Check the condition of the saddle covering and have a look underneath at the fixings also. Try adjusting the seat up and down. This should be easy to do and the seat post shouldn't snag at any point. If it does then the saddle post or seat tube of the bike could be misshaped.

Suspension

As with other elements of a mountain bike, suspension can come in many forms, so again the best way to test it, is to use it. To test the front forks, repeatedly apply pressure downwards on the handle bars and see how much travel there is in the forks. Look out for restricted movement or too much movement - both of which can suggest damage. Remember however than many types of suspension allow for adjustments to the travel in order to give a firmer or softer ride, so test at both extremes that the forks offer.

Some forms of suspension use oil in the forks. If this is the case then clean both forks, apply some downward pressure on the handle bars and see if there is any oil on the forks when the suspensions expands back out again. If there is oil then there's most likely a problem with the fork seals and they'll need replacing.

To check the rear suspension, place pressure downwards on the saddle. Like with the front forks, there should not be too little or too much movement. However, advances in rear suspension have allowed adjustment to the travel here as well, so take this into account.

Chain

Depending on quality, the price of a new chain can be quite steep so you're going to want to inspect the condition of the current one. A good chain shouldn't have any rust on it, it should be well-fitting and each link should be able to pivot on the ones either side. If two links will not move independently of each other then they can very easily be replaced but beware, one locked link often means there will be others. Tip the bike upside down and give the chain a good few rotations. It should be smooth, quiet and easy to turn.

Gears

The most common type of gears on modern mountain bikes comprises of a front and rear derailleur, a set of rear sprockets (aka cassette) and a set of front chain rings.

Take a good look at the condition of the sprockets and chain rings first. They can sometimes become damaged and the teeth can bend or pick up nicks, both of which will need repairing. Check if they are secure by trying to move them both away from and towards the bike. Any wobble or sliding of the sprockets or chain rings will need looking at.

The front derailleur should guide the chain onto the chain rings smoothly. Check that it hasn't been bent out of place or picked up any serious damage. Impact marks on derailleurs are a key giveaway of bike abuse. The rear derailleur should do a similar job, guiding the chain on the rear sprockets with ease and smoothness. Push the bottom of the derailleur forwards to give slack to the chain and let it move back into its resting position. This line of travel should again be smooth and require little effort to achieve it. Check the cables that run to both derailleurs for fraying or other damage and also check the gear-changing apparatus on the handlebars for ease of use and possible damage.

Whilst a visual inspection of the gearing system is important, the best way to actually get an idea of the condition of the gears is to use them. Ride the bike around a bit and go through every gear ratio possibility there is. The changing between gears should happen quickly, smoothly and without too much noise. When cycling in each gear the action should be the same and there should be no clunking or clicking coming from the derailleurs. Tuning can often fix most problems with gearing but the person selling the bike should have sorted this themselves first, and if they haven't then it can sometimes suggest there might be more terminal damage that couldn't be fixed without new parts

Crankset

When cycling the bike it's likely that you would notice any problem with the crankset if there were any. Things to look out for would be any movement of the bottom bracket, other than the rotation in the single dimension intended. Likewise, any side-to-side or up and down movement should be investigated thoroughly. Feel for resistance when pedalling and listen out for any unusual sounds like scraping or clicking. If there are odd sounds then it may be that the bearings have gone or that there is movement in the bottom bracket shell.  It's worth have a visual check of the crankset as well to sight any fracturing or bending of the crank arms (they will need replacing if there is) or any other damage to the bottom bracket or indeed pedals.

Handlebars and Stem

There is often a lot of force put through the handlebars and stem of the bike, especially during a heavy landing. For this reason they are usually well reinforced and built from strong materials. However, bending, splitting and even serious fracturing of the metal is not uncommon and should be looked for. Stickers can sometimes hide damage and you should ask for them to be removed before you buy. Also look out for repair work on the bars or stem (as indeed you should for the whole frame) and be cautious of anything that looks like it has been re-welded or amateurishly repaired.

To reiterate what has been said previously, the best way to test a used mountain bike is to give it a good ride. If everything on the bike is in good condition then the seller shouldn't mind you testing it, and if there are any problems, they will soon become apparent.

About the Author

Duncan Heath is MD of
Extreme Sports Trader

The best place to find a Second Hand Mountain Bike in the UK

Challenge Gel Bike Saddle $14.99 Adult comfort saddle. Weatherproof vinyl and gel. Size H26, W23, D12cm. By Challenge.

Shifter Bike Tube Saddle Bag $43.63 This inner tune saddle bag features a recycled bike tube construction and is designed to hold a tube, tool, kit and a pump. This saddle bag is secured with a wide neoprene wrap around strap, a stormproof rubber exterior and a reflective light loop. Materials: Recycled bike tube, upcycled wetsuits, PETE (recycled water bottles)Dimensions: 7.5 inches long x 3.5 inches high x 3.25 inches wideSecured with a wide neoprene wrap around strapVibration dampening neoprene attachmentStormproof rubber exteriorReflective light loop

Reebok Bike Saddle Bag $19.99 EAN/MPN/UPC/ISBN: 5060242055133. Reflective strip offers high visibility at night. Attachment strap allows for easy fitting and removal. Strap allows for a rear light to be fitted. 26 x 12.5 x 12cm. Weight 0.17kg. By Reebok.

M-Wave Clip-On Bike Saddle Bag $19.95 The M-Wave Clip-On Bike Saddle Bag is perfect for holding any smaller personal items during your ride. This durable bag features a zippered enlargement for even greater item storage! The easy-to-use black clip-on bracket easily attaches to your seat stem. A light bracket allows for easy taillight attachment. Reflective tape is included for added safety.

Bike $10 Bike

Bell Sports Bell Sports Sports Gel Bike Saddle 1006771 $26.09 Sports gel bike saddle Honeycomb Airgel pockets combine the softness of gel and the shock absorption of air SoftShox elastomer spring technology guarantees a smooth ride 3? of Durasoft foam padding a top consumer preferred wide sitting surface Ergonomic channel relieves pressure Rear edge guard protection Brand #: Bell Sports 1006771 UPC: 035011859453 Keywords: airgel bike seat softshox bicycle accessory saddle pad

Canyon Gel Bike Saddle Cover $9.99 EAN/MPN/UPC/ISBN: 5020148016836. Weight 2.4kg. Size H16.5, W27cm. Fits most bikes. By Canyon.

Bell Sports Bell Sports Max Comfort Bike Saddle 1006803 $21.09 Max comfort bike saddle Softshox shock absorbing spring technology guarantees a smooth ride 3? of DuraSoft foam padding a top consumer preferred wide sitting surface Ergonomic channel relieves pressure Heat-resistant fabric is easier on skin than vinyl Rear reflective patch increases visibility Brand #: Bell Sports 1006803 UPC: 035011000398 Keywords: seat bike max comfort softshox exercise bicycle

Velo Tempo.S1 Bicycle Saddle $49.96 Ride in comfort with this Tempo.S1 bike saddleThe Arc-tech suspension gives your bike seat that extra cushionVelo bicycle saddle offers on the front and rear seat protection Super comfortable honey comb gel inlay456 grams

Challenge Folding Trailer Bike $89.99 EAN/MPN/UPC/ISBN: 5032307750970. For ages 4 to 7 years. Folds for easy storage. Reflectors and warning flag for increased visibility. Single speed folding trailer bike for attaching to an adult's bike. Adjustable saddle height and adjustable handlebar reach. Universal seat post fitting with multi size hitch. Size (H)170, (W)64, (D)67cm. By Challenge.

Huffy Cruiser 26 Men's Bike $109.99 Enjoy a comfortable ride with this Huffy Cruiser 26622 26" men's bike that features CruzFit geometry for enhanced fit and dual-density pedals for a secure grip. The coordinated fender, chain guard and saddle treatments offer a stylish look.

Reebok Trekking Air Bike Saddle Cover $19.99 EAN/MPN/UPC/ISBN: 5060242055157. Weight 0.11kg. 4 x 19 x 38cm. Dual air chamber design, results in a more comfortable riding experience. By Reebok.

Bicycle Basket with Protective Wire (Handle Bar Mount) - Bracket for mountain bike saddle $16.99 In this bicycle basket your pet will be perfectly secure allowing you to ride worry-free. The safe and stable mount on the handle bars made with the new head tube attachment system designed by Aumueller and the heavy gauge wire guarantee your pet´s safety. The bike basket is available in two different sizes Standard apprx. 52 x 38 x 39 cm (LxWxH) Maxi apprx. 66 x 48 x 44 cm (LxWxH) Bicycle Basket´s Features Made of high quality durable and strong European boiled wicker Hand woven in Europe All lacquer and stain used meet the EN 71 requirements meaning that it is safe for human and animal exposure. The bike basket is supplied with a protective head mounting system and plastic-covered guard The benefits of the new Head Tube Attachment System Guaranteed to fit on the front of your bike. It takes up little space – a mere 8 mm The mounting position on handlebars is individually adjustable Designed for frames between 38mm and 46mm in diameter round or oval Easy assembly that doesn´t damage the frame thanks to the plastic protectors Absolutely weatherproof highly stable and safe Quick and easy set-up due to its few and simple components Able to carry up to 12 kg Guaranteed to fit with 90% of all handlebars due to its minimal space requirement Bike bracket for a second bike A second optional bracket is ideal when you have more than one bike and want to avoid constantly switching the mounting from bike to bike. The attachment system makes it quick and easy to switch your basket from one bike to another. Bracket for mountain bike saddles For mountain bikes we recommend attaching the basket to the saddle since it´s quite common for space on handles to be too limited. The saddle bracket then has perfect access. The protective bike basket lid with a protective grid provides your pet with

Travel Tour Saddle Bag $35 Durable water-repellent polyester constructionPlenty of storage ideal for bike tools and small partsEasy-Clip System allows for easy mounting to virtually any saddleReflection strips on both sides of pannier allow for maximum safety

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