Quick release bike axle

The quick-release axle rapidly replaced screwed bolts on axles and became the standard method used to hold bicycle wheels in place for the majority of road bikes although you still find bolted axles on fixies, singlespeeds and track bikes and formed the basis for the Campagnolo brand. Here, we'll explain why and provide an explanation of the many complexities of road bike axles. A quick-release wheel has a hollow axle, quick release bike axle, 9mm in diameter at quick release bike axle front and 10mm at the rear, with a 5mm-diameter skewer that passes through it.

The advent of large wheels demanded greater rigidity in the fasteners and thus the thru axle was born. These pins are threaded directly into the frame dropouts or parts of them and provide greater rigidity and more secure fastening. As for the rear wheel, the first versions used mm wide pins. The same width as the QR, but with a diameter of 12 mm instead of the 9 mm of the QR. There were DH versions with a width of mm. But they soon evolved to wider dimensions.

Quick release bike axle

One common confusion involves getting your bike mounted onto your smart trainer. Specifically, riders who purchase a direct-drive trainer must figure out how to connect their frame to the trainer properly. But never fear. Quick release was the standard axle used on most bikes for decades. Two small springs sit on either side of the hub. Quick releases are cheap and allow you to easily remove and replace wheels quickly without any tools. Frames that use quick-release levers have slots for the wheel axles to slide into, vs holes used by thru axles setups. Thru axles are a newer technology, having arrived on the scene in the early s as mountain bike frames became stronger and disc brakes demanded better performance from wheel axles. A thru axle is a thick pin with threads on one end. These adapters typically ship with your direct-drive smart trainer and are labeled for easy use. Axle length is measured from the inside of the frame where the quick release dropouts or thru axle holes are found. Frames using quick releases are typically mm or mm wide at this measurement point, while thru axle frames are typically mm or mm wide. For quick-release users, once you have your frame mounted on the trainer, hand-tighten the quick-release before clamping down the lever to finish the installation.

What is the benefit of thru axle? The best bike shop in the world.

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Are you baffled by the different axle options available for mountain bikes? Our guide below explains the common types of mountain bike thru-axles, as well as traditional quick-release axles. Like many bike-related things, axle standards seem to be subject to continual change, with new ones emerging, gaining traction, then sometimes falling by the wayside as tech trends move on. The main reason for this with mountain bike axles is the drive to build more robust wheels. The chainline needs to be engineered to run efficiently too, which means moving the chainset and cassette ever further outboard as axle width increases. Plus the chainstays need to be splayed out more to fit a wider axle, which increases the risk of heel strike as you turn the pedals. For mid-range and higher-spec XC, trail and enduro bikes , thru-axles with Boost spacing are now the norm. Super Boost is the latest thing and downhill bikes use wider spacing too.

Quick release bike axle

The quick-release axle rapidly replaced screwed bolts on axles and became the standard method used to hold bicycle wheels in place for the majority of road bikes although you still find bolted axles on fixies, singlespeeds and track bikes and formed the basis for the Campagnolo brand. Here, we'll explain why and provide an explanation of the many complexities of road bike axles. A quick-release wheel has a hollow axle, 9mm in diameter at the front and 10mm at the rear, with a 5mm-diameter skewer that passes through it. Until disc brakes on road bikes became commonplace, all road bikes used rim brakes and they all had front axles that were mm wide and rear axles that were mm wide. When disc brakes were introduced, there was a need to increase the width of the rear axle to accommodate the disc brake rotor , so rear axle width increased to mm while the front axle remained at mm. At one end, the skewer has a threaded adjusting nut, while the other end has a head containing a lever that operates a cam. There is a conical spring at either end of the skewer to help position it centrally in the axle and make sure both ends release evenly. The latter is cheaper to make, but more prone to contamination. Cheap quick-releases may have plastic parts in the mechanism, which are more compressible than metal, again reducing clamping force.

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Zwift tips and news every 2 weeks! Newest Featured Posts. For quick-release users, once you have your frame mounted on the trainer, hand-tighten the quick-release before clamping down the lever to finish the installation. A quick-release wheel has a hollow axle, 9mm in diameter at the front and 10mm at the rear, with a 5mm-diameter skewer that passes through it. You May Also Like. Versions: mm. Learn more. These pins are threaded directly into the frame dropouts or parts of them and provide greater rigidity and more secure fastening. The downside is that the pressure and adjustment is not exact, but rather subjective. One result of that more rigid connection is that bike makers have been able to build frames lighter, helping to bring the weight of disc brake bikes down to a level comparable with rim brake bikes.

For many years now, there's been an ongoing battle between the thru axle and the quick release axle. At the moment, the mountain bicycle community has begun to greatly favor having a bike with a thru axle, as it has a few slight advantages over the standard quick release axle. As an all-type bicycle rider, but more specifically a mountain biker, I always want to make sure that my bike has the best axles that'll hold my wheel through any terrain.

Marketing cookies help us to identify your interests with our advertising partners and show you relevant offers and advice. Which is better QR or thru axle? Read More He dabbled in cross-country mountain biking too. We hope this article clarified quick releases and thru axles for you, and helped you get going on Zwift more easily. Notify of. You can also find fancy quick-release skewers made of titanium, designed to save a few grams. Quick release was the standard axle used on most bikes for decades. See more. They offer an extremely positive and true connection to the frame and are believed by many to be an improvement on the older release system.