Metehan Toksoy. Mbr велосипед


Bike of the Year: the best bike of 2017 revealed

We’ve tested 66 bikes this year. Which was the best?

In association with dhb

We’ve tested more than 60 bikes over the last 12 months. Find out which bike impressed us most to take the Best Mountain Bike of the Year 2017.

The finalists

Here are the 2017 Test Winners. In no particular order…

The Bike of the Year 2017 is…

Trek Fuel EX 7 29

Trek Fuel EX 7 29 £2,200

Highs: Fun, fast and flashLows: None come to mindRead the full review

Verdict: The sheer pace of the Fuel EX 7 29 throws petrol on the heated wheel size debate and then fans the flames. But the Fuel EX 29 isn’t simply a fire starter. There’s a subtlety to the ride quality of the new Fuel EX 29 that lets you dance up or down every trail at a scorching pace. The fact that it looks red hot only boosts it appeal further. Sure, we’ve criticized the Plus version of the Fuel EX for being too expensive compared to the competition, the Fuel EX 7 29 however is right on the money, both in terms of value and performance.

The tale of the test

The past twelve months have flown by. During that time we tested 66 bikes and that’s not including the all of the longtermers or first rides. Only perfect ten rated bikes however, get shortlisted for our annual Bike of the Year award. This year is no different, so what are the very best bikes of 2017?

>>> Click here to read our Hardtail of the Year award

And what a year it turned out to be. After a relatively slow start that produce three 9-rated test winners in a row, the steel framed Ragley Blue Pig was the first bike to win a test with a faultless 10 rating. And it wasn’t the only hardtail of 2017 to attain top honours; the sub £500 Vitus Nucleus 275 VR and Plus-tyred Norco Fluid 7.2 both proved that if you like your thrills pure, you don’t need to rob a bank to get them.

There was even more competition in the 130-150mm trail bike market, with outstanding models emerging from the direct-sales sector and traditional bricks and mortar brands. In no particular order we loved the pace of the chubby-tyred Scott Spark 710 Plus, superb suspension of the Trek Fuel EX 7 29 and the sheer fun factor of the Commencal Meta TR V4.2 Essential.

Young German upstart YT is the only brand to have two bikes on the shortlist, the Jeffsy 29 and 27 both impressing us with their light weight, inspirational handling and outstanding specification.

And at opposite ends of the price spectrum there was the affordable, yet amazing, Calibre Beastnut and the hilarious handling of the stunning Evil The Calling. Both short travel trail bikes with bigger forks up front, but with the best part of £4k separating them, as there’s no way to compare them directly.

That’s why our Bike of the Year award has never been bill at a test of the best. It’s more a celebration of the standout bikes and a chance to reflect on the year that’s past, before diving headlong into next season.

So 2017 delivered ten bikes in total, all worthy top marks, but only one of them can rise to the top and take the coveted MBR Bike of the Year award. So with out further ado, let’s find out which bike is going to be joining previous winners, the Specialized Stumpy Evo, Voodoo Bizango 29 and Whyte T-130 S in collecting one the most prestigious accolades in mountain biking.

Near misses: the best of the rest

Not all our test winners made it into the Bike of the Year award – let’s take a closer look at the best 9-rated bikes.

Evil The Wreckoning X1 €5,999.99

Highs: 29er Enduro bike with killer geometry and attitudeLows: Limited tyre clearanceRead the full review

Scott Scale 730 Plus £1,279

Highs: Standout ride quality. Great Maxxis Rekon 2.8in tyresLows: Not the best value hardtailRead the full review

Merida One-Sixty 5000 £3,300

Highs: Silky smooth rear suspension and race winning geometryLows: Wheels and drivetrain let the side downRead the full review

Whyte 605 £699

Highs: Great all-round ride quality, sorted suspension forkLows: Skinny tyres, narrow handlebar and square-taper cranksetRead the full review

What was the best mountain bike last year?

Let’s take a closer look at the standout bikes of last season…

The best mountain bikes 2016 shortlist

Calibre Bossnut, £999Orange Crush, £1,650Santa Cruz Bronson, £7,599Vitus Nucleus 275 VR, £495Voodoo Bizango 29, £599Whyte 901, £1,199YT Capra AL Comp 1, €2,799Whyte T-130 S, £2,299 – BIKE OF THE YEAR 2016 WINNER

And the best mountain bike of 2016 was…

Whyte T-130 S

British engineering brilliance with an almost flawless performance makes this short travel ripper our winner.

www.mbr.co.uk

The best mountain bike disc brakes

Decent disc brakes are essential for boosting control and confidence on the trail.

If you’re looking to upgrade the disc brakes on your bike the choice can be a little bewildering. Fortunately most modern disc brakes are reliable and work great, meaning it’s unlikely you’ll buy a dud, but there are big differences in power and feel between brands and models, so doing your research will ensure you choose the best brake for you and your preferred style of riding.

What type of brake you buy may depend on what sort of riding you do, but being able to stop quickly is absolutely fundamental. Power is crucial then, but as the saying goes, it’s nothing without control. How you meter out the power is down to modulation, which comes predominantly from the lever feel.

Of course this is somewhat subjective, but modulation is vital, because it allows you to feather the brakes and tune the level of braking force depending on how much traction is available from your tyres.

A top-performing trail brake shouldn’t cost much more than £120 (per end), but if you’re looking for lighter weight or more power, that can bump the price to over £200. You can cut the budget and get a basic brake for less than £50, although you will lose some functionality and it will be heavier.

What to look for in a mountain bike disc brake:

Top-loading pads

There are several advantages to being able to remove the pads from the top of the caliper: you can change pads quickly, wear is more obvious and it also makes alignment easier because you can see the rotor from above as it spins through the caliper.

Rotors

Disc rotors come in several sizes: 140, 160, 170, 180 and 203mm. You can run any size rotor with most brakes but you will need a different adapter if you change sizes.

Standard rotors are cut from a single piece of stainless steel, but there are also two-piece designs consisting of an alloy carrier with a stainless steel braking surface. They’re more expensive but the smaller braking surface is truer and less likely to warp.

Levers

To accommodate different hand sizes, disc brakes have reach adjustment. Tuning is done with either a grub screw or a dial on the lever. With this you can adjust the lever position relative to the bars to suit your hand size, and to a lesser extent, personal preference.

A split clamp allows you to remove the brake lever without removing the grips. The clamp can also be replaced via a MatchMaker-compatible design, allowing you to piggyback a shifter directly to the lever body, saving weight and de-cluttering the bar.

Hose

Some brakes have Kevlar or braided hoses, which are less compressive and can boost performance. The hose is usually cut to length for the front and rear brakes, but it’s easy to shorten if not, although you may have to bleed the brake afterwards.

Spare olives and hose inserts should be included in the box. These fittings attach the hoseto the lever, and having spares is useful in case you have to trim the hose when you first fit the brake.

SRAM Guide RE

Price: £123.00

Rating: 10/10

SRAM didn’t develop the RE for regular trail bikes, but since it costs the same as the cheapest Guide brake, only adds 35g, and packs Code levels of power, we’re totally sold on it for regular trail use, especially if you’re a heavy or more aggressive rider.

Read the full review of the SRAM GUide RE disc brake

Buy Now: SRAM Guide RE disc brake at Bike-Discount.de from £106.80

SRAM Level TLM disc

Price: £159.00

Score: 8/10

As an XC brake, the Level TLM is sleek, lightweight and easy to set up and service. If you don’t weigh much, you could probably get away with it on a short-travel trail bike, but if you ride more aggressively, we’d recommend the Guide instead, as it’s a lot more capable.

Read the full review of SRAM Level TLM disc brakes

Buy Now: SRAM Level TLM disc brake at Wiggle from £126.49

Shimano XTR Race disc

Price: £219.98

Score: 10/10

Shimano offers two XTR brakes: Trail and Race. The latter lacks the power-boosting ServoWave lever design and finned brake pads, but it is lighter as a result. The Shimano XTR Race delivers unbeatable value and performance and is easy to set up and bleed as well.

Read the full review of the Shimano XTR Race disc

Buy Now: Shimano XTR Race disc at Chain Reaction Cycles from £119.99

Shimano Alivio disc

Price: £64.98

Score: 10/10

Shimano’s Alivio brake is a popular choice on hardtails and entry-level full-suspension bikes, and we’ve ridden dozens of sets over the past couple of years. Come rain or shine, on smooth local trails, ragged BikePark Wales runs or lift-assisted laps in the Alps, it’s never let us down.

Read the full review of the Shimano Alivio disc

Buy Now: Shimano Alivio disc at Tweeks from £31.99

Sram Guide Ultimate disc

Price: £264.00

Score: 9/10

SRAM has really nailed the lever feel and position on the Ultimate, and while we used the minimum Contact Point Adjustment setting, the wide range of adjustability makes it easy to get your preferred lever feel. Not cheap, but they do offer unrivalled control.

Read the full review of the Sram Guide Ultimate disc

Buy Now: Sram Guide Ultimate disc at Chain Reaction Cycles from £158.49

Avid DB3 disc

Price: £95.00

Score: 9/10

With the lever pivot really close to the bar, you get improved control — one-finger braking is all you need. We like the split clamp too, and its compatibility with Matchmaker mounts lets you clean up your cockpit, but it’s the impressive feel and power that really makes the Avid DB3 stand out.

Read the full review of the Avid DB3 disc

Buy Now: Avid DB3 disc at Merlin Cycles from £34.99

Hope Tech 3 E4 disc

Price: £189.00

Score: 8/10

The caliper doesn’t sport any clever heat shields or fancy backing materials on the pads, but we had no issues with heat build-up or inconsistent braking power. In fact, the opposite was true; the Hope Tech 3 E4 offered the most reliable performance in test, with zero lever pump or brake fade. It isn’t the most powerful, though, and would benefit from a little more progression.

Read the full review of the Hope Tech 3 E4 disc

Buy Now: Hope Tech 3 E4 disc at Tredz from £131.98

Clarks M2 disc

Price: £20.00

Score: 8/10

Overall performance was good, if a notch or two below its competitors. We put this down to a couple of things. Firstly the pads don’t sweep the full braking surface of the rotor; around 3mm is left untouched.

Read the full review of the Clark M2 disc

Buy Now: Clark M2 disc at Chain Reaction Cycles from £37.99 (pair)

Formula R1 Racing disc

Price: £283.95

Score: 8/10

With its oversized pistons and Kevlar hose, the Formula R1 Racing is the most powerful brake here. It’s also the lightest, but the stumpy lever is a little uncomfortable when braking hard; it also needs constant fiddling to run drag-free.

Read the full review of the Formula R1 Racing disc

Buy Now: Formula R1 Racing disc at Chain Reaction Cycles from £132.99

Shimano Saint disc

Price: £185.98

Score: 7/10

The Shimano Saint brakes come at a great price but are harder to modulate than other four piston brakes. There’s still a lot of dead lever travel, though; the free stroke adjuster is all but useless, and the power ramps up suddenly, making it much harder to modulate than other brakes in this price range. There’s no arguing with the Saint’s price, though.

Read the full review of the Shimano Saint disc

Buy Now: Shimano Saint disc at Evans Cycles from £107.99

Shimano XT M8000 disc

Price: £99.99

Score: 7/10

Shimano’s XT brakes have long held a reputation as being ultra-reliable. Unfortunately, on prolonged descents, issues ranging from wild shifts in bite point, to inconsistent power, frequently spoiled our ride with the new M8000 model. In a nutshell, if we hadn’t had the significant teething issues with the M8000, you’d be reading a rating much closer to top marks here.

Read the full review of the Shimano XT M8000 disc

Buy Now: Shimano XT M8000 disc at Chain Reaction Cycles from £69.99

Above: How to stop disc brake noise

Conclusion

We said earlier that the ideal brake has to be both powerful and well modulated. If it’s underpowered, you’ll end up pulling too hard to slow down, which can affect the way you set up for a corner or ride a technical section.

Conversely, if the brake is too harsh, you can over-brake coming into a corner, losing grip and traction. Fortunately, most of the brakes in this test have sufficient power, but it’s the combination of feel, lever shape, ease of set-up and reliability that gain top scores.

Despite the low price of the budget brakes, they still work great. The Shimano Alivio has great power a comfortable lever and is easy to set up. When you factor in the bleed kit, it’s also great value.

Lightweight disc brakes are obviously all about weight saving, but there is a law of diminishing returns. You really have to ask yourself whether saving the weight is worth the cost. The Shimano XTR brakes come at a great price without a delicate feeling.

>>> Click here to find the best handlebars

When you need to scrub off a load of speed, a four-pot brake really comes into its own. Feel is key, but of equal importance is stopping power and heat management (and reliability, of course, but that’s a given).

Top of the four-piston brakes is SRAM’s Guide Ultimate — pricey but with great lever feel, tons of power and able to handle Alpine riding with ease. For these reasons, it really is the ultimate.

www.mbr.co.uk

Donanım – MBR Nedir? | Metehan Toksoy

Donanım konulu yazı serimizin 2. yazısından merhaba.  Geçen yazımızda Bios Nedir? konusundan yola çıkarak Boot sürecinden bahsetmiştik.

Boot sürecinden sonra Bios, işlemciyi Sabit Disk’in 0. adresi yani Plaka 0, Kafa 0, Sektör 1 konumuna yönlendirir ve oradan sonra işlemi orada bulunan dosya sisteminin içindeki kodlara bırakır demiştik. Blogumuzda anlatacağımız 2 disk bölümlendirme mantığı(dosya sistemi diye bahsettiğimiz) vardır. MBR ve GPT . Bugün MBR üzerinde duracağız.

MBR, IBM tarafından kullanılmaya başlayan bir disk bölümleme sistemidir. İlk başta sadece IBM sistemleriyle kullanılmak üzere tasarlanan MBR, 1983 yılında PC DOS 2.0 ile bütün bilgisayarların kullanımına sunulmaya başlandı.  MBR, diğer adıyla Master Boot Record, sabit diskin başlama noktasıdır. Eğer MBR ya da MBR gibi bir başlama noktası olmasaydı, işlemci BIOS kodlarından sonra ne yapacağını bilemezdi. MBR‘nin adresi asla değiştirilemez ve bu noktaya işletim sistemleri tarafından kurulum sırasında veriler eklenebilir.

Temel olarak MBR iki bölümden oluşur diyebiliriz.1-) Master Boot Code2-)Master Partition Table

MBR‘nin başında  440 byte boyutunda Master Boot Code (Bootstrap) vardır. Bu kod, BIOS’un  bootable bir cihaz ararken varlığına baktığı ve eğer var ise sistemi başlatma işini teslim ettiği kodlardır. Burada var olan kodlar işletim sistemlerine özel olabilir. Buradaki kod direkt işletim sistemini de başlatabilir, çoklu boot var ise boot ekranını oluşturacak programının kodlarını  da içerebilir. Windows üzerine Ubuntu yüklediğinizde buradaki kod değişir, Windows’un bootlader’ından Ubuntu’unu GNU GRUP bootloader’ına geçer.

Master Boot Code‘un ardından 4 byte disk imzası alanı gelir. Disk imza alanının ardından 2 byte boş alan gelir. Bunun nedeni Eğer Master Boot Code, 440 byte alanına sığmaz ise, disk imzası ve bu boş alan eklenerek Master Boot Code‘un 446 byte değerine ulaştırılabilmesi içindir.

MBR’yi asıl önemli kılan Master Boot Code‘dan ziyade Master Partition Table‘dır. 64Byte boyutuna sahip bu tablo, boyutundan dolayı sadece 4 adet Primary Partition şeması içerebilir.  İsterseniz devam etmeden önce bir parantez açıp Sabit Disklerde bulunan Partition kavramında bahsedelim.

Partition Nedir? 

Partition(bölüm), aynı sabit disk üzerinde yer alan bölümlerdir. Bir sabit disk, birden fazla partition bulunduruyorsa işletim sisteminde sabit diski birden fazla ayrı disk olarak görünebilir. Örnek vermek gerekirse:

Primary Partition(Birincil Bölüm), MBR‘de şeması bulunan sabit disk bölümlerinin adıdır. Birincil Bölüm işletim sistemi ve/veya veri depolayabilir ve Birincil Bölümlerin MBR üzerinde direkt şeması bulunur. Birincil Bölümlerin birinin active ya da boot disk olarak işaretlenmesi gerekir. Bu işaretleme direkt anlamda işaretleme değildir. Master Boot Code içine işletim sisteminin ve bootloader’ın bu diskte olduğunu belirten bir kod eklenir. Eğer hiç bir diskte active işareti yok ise BIOS Post Ekranından hemen sonra Master Boot Code tarafından ekrana bir hata mesajı yazdırılır .Bu mesaj genellikle “No bootable media found” gibi olur. Birincil Bölümlere yer yer Gerçek Bölüm de denilir.

MBR depolama sistemine sahip bir sabit diskte diğer bölüm şekli de Genişletilmiş Bölüm (Extended Partition) dür. Birincil Bölümler işletim sistemi veya veriyi depolayabilirken,  Genişletilmiş Bölüm işletim sistemi veya veri depolayamaz. Peki ama o zaman bu bölüm ne iş yapar? Genişletilmiş Bölüm sadece 1 tane olur ve Mantıksal Bölümlerin (Logical Partitions) bilgilerini üzerinde barındırır. Genişletilmiş Bölümlerde veriyi Mantıksal Bölümler depolar. Yani Genişletilmiş Bölümü Master Partition Table‘a benzetebiliriz. Genişletilmiş Bölümler sınırsız sayıda Mantıksal Bölüme ayrılabilir.

Açtığımız parantezi kapatalım ve Master Partition Table‘dan devam edelim. Master Partition Table, Birincil Bölümlerin bilgilerini tutar. Fakat MBR sisteminde Master Partition Table‘da Birincil Bölümlerin şeması için 64byte ayrılmıştır. Bu yüzden Master Partition Table sadece 4 Birincil Bölümün şemasını içerebilir. Yani MBR depolama sistemine sahip bir disk maksimum 4, minimum 1 Birincil Bölüm içerebilir.

Peki yukarıda Genişletilmiş Bölüm diye bir bölümden bahsetmiştik burada ondan bahsetmedik. Windows ortamında  3 tane Birincil Bölümden oluşan bir disk üzerine bir bölüm daha eklemek istediğinizde Windows, direkt olarak 4. Bölümü Genişletilmiş Bölüm olarak oluşturur ve oluşturduğu bölüm Mantıksal Bölüm içerecektir. Yani Windows, son bölümün şemasını tutmak için son bölümü Birincil Disk alanına olarak açar ama onu Genişletilmiş Disk olarak kullanır.

Master Partition Table‘ın alanı kısıtlı dedik ama şimdi de Master Partition Table içine genişletilmiş bölüm ekledik. Genişletilmiş Bölüm demek sınırsız bölüm oluşturabilmek demektir. Madem Master Partition Table’a sınırız bölüm sığıyor o zaman genişletilmiş bölüme neden ihtiyaç var? dediğinizi duyar gibiyim.

Genişletilmiş Bölümün sadece bilgisi yani adresi, boyutu gibi bilgileri Master Partition Table üzerinde tutulur. Mantıksal Bölümlerin yani Genişletilmiş Bölümler üzerinde oluşturulan bölümlerin şeması Genişletilmiş Bölümün içindeki tabloda tutulur.

MBR mantıksal bölümlerin şemasını barındırmaz sadece tek bir Genişletilmiş Bölümün  şemasını barındırır. Genişletilmiş Bölümün içerdiği Mantıksal Bölümlerin şeması ise sabit diskin daha ilerideki sektörlerinde bulunur ve buradan bu şemaların bulunduğu sonraki sektörlere link verilir.

Volume Boot Record Nedir?

MBR gibi küçük bir alanda her bölüme ait detaylı bilgilerin ve detaylı  dosya şemalarının tutulması imkansızdır. Bu yüzden MBR mantığına sahip sabit disklerde her bir bölüm, Birincil ya da Mantıksal farketmeksizin MBR’den ayrı olarak kendi MBR’sine yani özel adıyla  Volume Boot Sector’üne sahiptir.  Volume Boot Sector, sadece üzerinde bulunduğu bölümü kontrol eder, üzerinde bulunduğu bölümün bilgilerini içerir. Bazı kaynaklarda Partition Boot Sector diye bir şeyden bahsedilir. Volume Boot Sector, Partition Boot Sector ikisi de aynı şeyi ifade eder.

Volume Boot Sector, Disk Parameter Block ve Volume Boot Code‘dan oluşur.  Disk Parameter Block içerisinde ait olduğu bölüme ait boyut, sektör adeti, bölüm adedi ve şeması gibi bilgileri barındırır. Volume Boot Code ise MBR’de bulunan Master Boot Code ile yaklaşık olarak aynıdır. Fakat Volume Boot Code‘un aktif olabilmesi iki şart vardır o da bulunduğu Bölümün active olarak işaretlenmiş olması ve MBR’nin içinde bulunan Master Boot Code tarafından tetiklenmesi gerekir. Active olmayan diğer bölümlerde de Volume Boot Code bulunur fakat bu kodlar kullanılamazlar yani etkisizdirler.

Son olarak anlattıklarımızın hepsini bir şemada özetlersek:

Donanım serisimizin ikinci yazısının da sonuna geldik. Bilgisayarın temelini anlatmaya devam edeceğimiz üçüncü yazımızda görüşmek üzere! Sormak istediğiniz bir şey olursa buradan iletişim bilgilerime ulaşabilirsiniz.

Herkese iyi çalışmalar dilerim.

Blogda yayınlanan yazıları, kaynakça verdiğiniz sürece kopyalabilirsiniz. Kaynakça: Wikipedia http://fixingmycomputer.com www.yakuter.com www.tomshardware.com www.computerhope.com www.ntfs.com 7.enpedi.com

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The best mountain bike mud tyres

With the right rubber you can find grip while all around you slip.

Every winter, rather than slip and slide defensively through the gloop and muck, it pays real dividends to fit specific mud tyres. They bring extra grip and promote greater confidence at every turn, allowing you to keep attacking the trails.

>>> Click here to find the best mountain bike tyres

Pick a versatile mud tyre and you’ll only need to swap tyres once this winter. With half an hour in the workshop, you can enhance your riding until the clocks go forward again next spring.

Front tyre priority

Front-end security remains a priority in winter — a back-end slide is always much more manageable — and mixing and matching tyre brands, compounds and sizes at either end is the best way to balance rolling speed, weight and control. If you’re a proper tweaker, you can always trim knobs down for custom grip levels.

Rear winter tyres face a difficult balancing act, since weight and rolling friction are far more noticeable out back, and rear tyres are also much more prone to damage and punctures, so require extra casing thickness and protection.

Traction versus drag

Well-spaced, spiky blocks are the signature tread pattern of winter-friendly tyres, but the height and aggression of these knobs, and the weight and width of the tyre casing, are further factors that directly affect drag, overall bulk and a product’s optimal terrain and purpose.

Even with mud tyres you can have too much of a good thing, which is why you need to balance wet weather grip with acceptable rolling resistance.

Rubber compound

Durometer is the quoted measure for rubber hardness, with higher numbers signifying a firmer compound, i.e. 60a is harder than 50a. This durometer measurement is only a guideline, as proprietary compounds and blends can also make huge differences to grip, rebound damping and rolling speed. In this respect, rubber is something of a ‘dark art’, with certain tyres often surprising on specific terrain and surfaces.

Weight

Mud tyres need significantly more support to keep big tread blocks stable, which adds weight. More fabric and rubber in the construction of grippier, wider tyres also adds weight, but bigger air volumes offer more comfort and isolation from the ground — especially useful on hardtails to smooth out the rougher ride.

Overall rotating weight becomes very noticeable when big tyres pick up clag, and therefore muddy tyres can make it hard to change direction at speed — although that isn’t always a bad thing in extreme conditions!

Casing

It’s harder to stick to precise lines to protect sidewalls from abrasions and sharp edges in slippery winter conditions. Therefore it’s worth thinking about running a heavier casing with better protection and durability — the caveat being that riding in the winter is slow-going, and a heavier carcass can decrease acceleration and rolling speed further.

Tread

More open tread patterns should hold onto less gloop and clear more readily once up to speed, but the downside is greater rolling resistance. Mud tyres get pronounced shoulder blocks for better cornering hold and off-camber bite. Rubber formulas and special coatings on the outer casing surface (beneath the blocks) are also designed to shed sticky mud more quickly.

Width

Thinner tyres carve through deep, thick mud more effectively, but be realistic as to how much of your ride time is spent in proper gloop, as wider tyres are generally better everywhere else. A good compromise is a wider ‘grip’ tyre up front and a thinner ‘drive’ tyre out back, but beware that super-fat front rubber can ‘float’ a little in serious mud rather than ‘cutting’ in.

Air pressure

Different tyres require different pressures and, generally, the thicker the casing the lower the air pressure you can get away with.

Watch: How to set your tyre pressures

Year-round, aim for the minimum air pressure that keeps the tyre casing from twisting too much under hard cornering forces and still prevents rim strikes under impacts. If you often run with more than 30psi, try reducing pressure and experimenting with softer tyres in winter.

Schwalbe Magic Mary

Price: £49.99

Score: 10/10

With simple, huge square blocks jutting out at all angles, the tread pattern looks a lot like a classic motocross tyre, and, sure enough, chuck it at some gloop and it’ll take everything in its stride — only a pure downhill spike has more bite.

Read the full review of the Schwalbe Magic Mary tyre

Buy Now: Schwalbe Magic Mary at Tredz from £33.49

Michelin Wild Mud Advanced

Price: £56.99

Score: 9/10

Using Michelin’s super-squishy Magi X grippy rubber mix (that’s usually only found on its front-specific tyres), this hefty Wild Mud tyre proved a revelation in the nastiest conditions.

Read the full review of the Michelin Wild Mud Advanced tyre

Buy Now: Michelin Wild Mud Advanced tyre at Chain Reaction Cycles from £39.99

Specialized Storm Control

Price: £30.00

Score: 9/10

A firm favourite here at mbr, the tubeless-ready Specialized Storm Control is studded with small blocks, and designed for mud, but versatile enough for most trail riding.

Read the full review of the Specialized Storm Control tyre

Buy Now: Specialized Storm Control tyre at Hargroves Cycles from £29.95

Maxxis Beaver

Price: £42.99

Score: 9/10

Rather than being purely an out-and-out mud plugger, we’ve always found the Maxxis Beaver a better all-round trail tyre. The dual-compound construction sees a softer layer applied over a firmer base, making the Beaver pretty fast rolling for a wet-weather tyre, yet it still excels in damp and slippery conditions.

Read the full review of the Maxxis Beaver tyre

Buy Now: Maxxis Beaver tyre at Wiggle from £29.32

Maxxis Shorty

Price: £54.99

Score: 9/10

The design is essentially a cut-down mud spike, but it’s proven way more versatile than a pure mud specialist and will happily double up as a dry weather tyre.

Read the full review of the Maxxis Shorty tyre

Buy Now: Maxxis Shorty tyre at Tredz from £41.59

Specialized Hillbilly

Price: £35.00

Score: 9/10

It is essentially a cut-down mud spike, with a hollowed-out, sucker-pad version of the Storm tread. The second thing we noticed is how, as mountain bike tyre technology moves forward, more tyres begin to look like blocky motocross treads.

Read the full review of the Specialized Hillbilly tyre

Buy Now: Specialized Hillbilly tyre at Cycle Store from £34.99

On-One Chunky Monkey

Price: £29.99

Score: 8/10

In deep, gloopy mud, there are better solutions, as the broad profile can float rather than bite, but for the price it’s a steal.

Read the full review of the On-One Chunky Monkey tyre

Continental Mountain King II

Price: £49.95

Score: 8/10

The Continental Mountain King II Protection is a versatile trail tyre that can handle drenched trails and some mud well, but you need to buy the Black Chilli version tested here for maximum performance.

Read the full review of the Continental Mountain King II tyre

Buy Now: Continental Mountain King II tyre at Chain Reaction Cycles from £32.49

WTB Warden

Price: £55.00

Score: 8/10

The WTB Warden is an unashamed enduro beast. Designed for hammering the nastiest Alpine-style tracks with minimal issues and maximum security, the flipside of which is a weight that reflects the toughness of the casing and the height of the fang-like knobs.

Read the full review of the WTB Warden tyre

Buy Now: WTB Warden tyre at Chain Reaction Cycles from £39.99

Continental Der Baron Projekt

Price: £59.99

Score: 8/10

Using smaller ramped and siped (grooved) blocks, it’s slightly wider, with a near continuous row of edge knobs, than the older Baron we rated highly in the wet. This tread tweak is designed to improve dry-weather performance and grip levels, especially braking control.

Read the full review of the Continental Der Baron Projekt tyre

Buy Now: Continental Der Baron Projekt tyre at Tredz from £59.95

Schwalbe Nobby Nic II

Price: £49.99

Score: 8/10

It’s no exaggeration to say we didn’t like the old Schwalbe Nobby Nic. But the redesigned tread pattern and new casing has completely transformed its performance, and in its softer Trailstar compound, the Nobby Nic II is a jack-of-all-trades.

Read the full review of the Nobby Nic II tyre

Buy Now: Schwalbe Nobby Nic II tyre at Wiggle from £31.99

Hutchinson Toro Enduro

Price: £49.99

Score: 8/10

The 2.25in version shares the same supple, ground hugging carcass (a Hutchinson signature), but the centre knobs are straighter and lower profile, so designed to be faster rolling. The tyre compound is a mixture of 50a rubber in the lower central tread zone and sticky edge blocks for more cornering bite and to prevent any sudden pinging off roots or edges.

Read the full review of the Hutchinson Toro Enduro tyre

Buy Now: Hutchinson Toro Enduro tyre at Chain Reaction Cycles from £38.99

Mavic Charge

Price: £50.00

Score: 8/10

Cutting into loam or loose dirt, there’s great edge bite in both the wet and dry, and control on rocks and roots is excellent — the Charge literally takes the heat out of the sketchiest situations.

Read the full review of the Mavic Charge tyre

Buy Now: Mavic Charge tyre at Rose Bikes from £34.44

WTB Vigilante

Price: £40.00

Score: 7/10

Outside of the slop and deep mud the tyre cleans well, and the Vigilante is very capable in firmer dirt and on rocks and roots. It’s worth considering the thicker Tough casing and accepting the heavier weight if you’re really going to smash it downhill.

Read the full review of the WTB Vigilante tyre

Buy Now: WTB Vigilante tyre at Chain Reaction Cycles from £35.99

Specialized Butcher

Price: £35.00

Score: 7/10

Already highly rated by us in dry weather, Specialized also reckons it’s a good mud-friendly tyre, thanks to the softer, outward-facing 42a rubber that sits on top of a harder 70a base compound, used to keep the tread blocks sturdy.

Read the full review of the Specialized Butcher tyre

Buy Now: Specialized Butcher tyre at Evans Cycles from £35.00

Hutchinson DZO Enduro

Price: £49.00

Score: 7/10

These DZOs bite fiercely but don’t quite offer the same sensation that you can take liberties when leant over hard whatever the conditions underneath the wheels. However, as a solid, long lasting, pure mud downhill tyre, the Hutchinson DZO Enduro is a good choice.

Read the full review of the Hutchinson DZO Enduro tyre

Buy Now: Hutchinson DZO Enduro tyre at Halfords from £49.99

Onza Greina

Price: £59.99

Score: 6/10

Hold and braking poise on greasy surfaces going straight is very assured. Leant over hard, grip seemed to fade away in a few instances — nothing too bad, but the tyre tends to float, rather than catch an edge. There’s also a sense that the offset edge knobs flutter in long, flat, greasy corners or when holding off-camber slopes.

Read the full review of the Onza Greina tyre

Buy Now: Onza Greina tyre at Chain Reaction Cycles from £49.99

Conclusion

For pure grip up front, the Michelin Wild Mud is ridiculously capable, but only ideal for riders with unadulterated descending priorities.

We’re totally sold on Schwalbe’s more versatile Magic Mary tyre, since it can handle everything from dust to mud. It’s not the fastest, and turnover is at the slow end of the scale, but the weight is manageable on the front, and combined with a faster rolling rear tyre, it should be just about acceptable for most trail riders.

Maxxis’ Shorty and the Schwalbe Nobby Nic II are fairly light and tough, with the Shorty leaning way more to mud-specific, and the Nic boasting a broader remit and much faster rolling.

One factor we’ve not touched on so far is price, and on this front Specialized cleans up, being almost half the cost of the competition without compromising on quality — its XC-focused Storm Control is one of the best thinner, lighter models and the new, heavy-duty Hillbilly is a fantastic no-nonsense operator.

www.mbr.co.uk

MBR ve GPT Arasındaki Farklar

Sabit disklerle içli dışlı olanların en çok merak ettiği sorulardan birini yanıtlıyoruz.

Eğer sabit diskinizi bolca kurcalamış ve bölümlere ayırmışsanız, MBR ve GPT gibi terimlerle sıkça karşılaşmışsınızdır. Özellikle Dual-Boot Mac çalıştıran kullanıcılar bu terimlere oldukça aşinadır. Bu yazımızda ise size bu iki terim arasındaki farkları anlatacağız.

Çoğu kullanıcı, sabit disklerinin bölümlere ayrılabileceğinden haberdardır. Ancak bu kullanıcıların pek çoğu, işletim sisteminin bu bölümleri nasıl yapılandırdığını bilmez. İşte tam burada MBR (Master Boot Record) ve GPT (Guild Partition Table) devreye giriyor. Farklı mimarilerde olmasına rağmen iki yapı da disk bölümleri için bilgi toplama ve yönetim amacıyla kullanılır.

Master Boot Record (MBR)

MBR, disk bölümlerini yönetmek için kullanılan, nispeten eski ancak günümüzde halen pek çok kullanıcı tarafından kullanılan sistemdir. Depolama  alanında organize edilen disk bölümlerine dair bilgiler de bu sistem tarafından tutulur. MBR ayrıca işletim sistemi için disk bölümlerini taramaya yarayan kodu barındırır.

Bir MBR diski, en fazla dört adet birincil bölüme sahip olabilir. Daha fazla bölüm yaratmak için dördüncü bölüm genişletilebilir olarak ayarlanabilir. Bu sayede dördüncü bölüm bünyesinde daha fazla alt bölüm oluşturulabilir. MBR diskler, bölümler için 32-bitlik kayıt sistemi kullandığı için her bir disk bölümü için 2TB sınırı vardır.

GUID Partition Table (GPT)

UEFI standardına sahip olan bu sistem, diskin bölümlerini düzenleyen en güncel sistemdir.  Yani UEFI tabanlı bir sisteminiz varsa MBR yerine GPT kullanılması gerekmektedir. MBR’nin aksine, GPT’de teorik olarak sınırsız bölüm oluşturulabilir.

GPT, depolama alanı olarak da MBR’den bir adım öndedir. MBR’de bulunan her bir bölüm için 2TB sınırı, GPT’de 9.44ZB gibi boyutlara ulaşabilmektedir. Elbette bu değer sadece teorik olarak mümkün. Zira Windows işletim sistemlerinde her bir bölümün maksimum kapasitesi 256TB olarak sabitlenmiştir.

Üstteki diagramdan görebileceğiniz gibi, GPT diskler başta ve sonda olmak üzere iki GPT Header’a sahiptir. GPT’yi MBR’den daha kullanışlı yapan en önemli detaylardan biri ise bu diziliştir. GPT diskler, yedek header’ı sonda depoladığı için ana header zarar gördüğünde diskin kurtarılması çok daha kolay olur. GPT diskler ayrıca sorunları tespit etmek için CRC32 sağlama kullanır.

Diagramda dikkat çeken başka bir detay olan Protective MBR ise, BIOS tabanlı sistemlerin bu alanda bulunan bootloader ile GPT diskleri boot etmesine yarar. Ayrıca Protective MBR, GPT’ye karşı tanımsız olan disk araçlarının diske zarar vermesini engeller.

İşletim Sistemi Desteği

Intel Mac’ler standart olarak disklerinde GPT’yi kullanır. Sıradan yollardan Mac OS X’i MBR sisteme yüklemek mümkün değildir. Ayrıca pek çok Linux kernel’i GPT desteğine sahiptir. GPT diski Linux ile kullanmak için Grub 2 bootloader’ın kullanılması gerekmektedir.

Windows tarafında ise GPT diskler Windows XP’den bu yana destekleniyor. (32-bit XP hariç) 64-bit Windows 8 yüklü bilgisayarlar GPT’yi varsayılan olarak kullanırken, Windows 7 ve öncesi sürümlerde MBR varsayılan olarak belirlenmiş durumda.

Sonuç

Pek çok normal kullanıcı için MBR veya GPT disk kullanmak bir fark yaratmayacaktır. Bölüm başı 2 TB sınırı size yetiyorsa MBR diskler işinizi fazlasıyla görecektir. Ancak en güncel bilgisayarların çoğu UEFI desteğine sahip olduğu için bu bilgisayarlar sadece GPT ile çalışabilir.

www.technopat.net


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