One of the fastest chain lubes ever - Rex Black Diamond

April 30, 2021 Thomas Kuus Comments

ONE OF THE FASTEST CHAIN LUBES EVER - REX BLACK DIAMOND

Wheel Energy laboratories is one of the few completely independent chain lube efficiency testing labs in the world. They were also an important partner in the extensive development process of Rex Black Diamond chain lube.

In a 300 km dynamometer test under 175 W magnetic resistance, Rex Black Diamond gave the best overall result, leaving competing high-end chain lubricants behind. The test protocol was designed by Wheel Energy, with no instructions or other input from Rex. In addition to lab tests,  Black Diamond has proven its performance in Tour de France 2019 (1 stage win).

TEST RESULTS

Three hundred kilometer race simulation at 40 km/h

THE SECRET

The secret of the Black Diamond is that particles are mixed into the lube in a time-consuming ultrasonication process at Rex factory’s Racing Service lab.

The Black Diamond particles significantly improve the properties of the lube: Lower friction, lower wear and increased rain resistance.

In continuous metal-to-metal contact that occurs in drivetrain while riding, the particles form an ultra-thin and hard layer that minimizes friction and wear, and is also waterproof.

Best lubrication performance and longevity will be achieved after 3–4 applications, when the lube has completely penetrated into the chain.

RAINPROOF

NEXT LEVEL COMBINATION OF DRY AND WET WEATHER PERFORMANCE

Previously, seeking for the lowest possible friction in a chain lube has meant sacrificing all-weather performance. So-called “wet” lubes have traditionally been very energy-stealing.

Rex Black Diamond combines test-winning friction levels with strong weather resistance in a previously unseen way. Black Diamond has been tested in demanding race conditions by different elite athlete teams. The true king of chain lubes! 

N-KINETIC WAX

FEATURING THE LATEST RACE SKI WAX TECHNOLOGY

Rex has upgraded the wax blend used in Black Diamond lube to the same Rex N-kinetic™ technology that is used at their best cross-country ski waxes. The slightly lower viscosity results into lower friction and better lube penetration into the chain. Rex is well known for its world cup level fluorinated ski waxes and is an expert in paraffin wax-based applications with six decades’ worth of experience.

WAX-BASED

SOLVENT-FREE, NON-VAPORIZING, UNDILUTED

Adding solvent or water to a chain lube is generally thought to be a great way to reduce manufacturing cost and giving the manufacturer a better margin. At Rex, they think otherwise. Every drop you apply on the chain is 100% lubricant and not something that will evaporate into the air. Unlike with most chain lubes, there is no need to wait until the solvent evaporates before you can ride your bike.

• UP TO 30 WAXINGS FROM A SINGLE BOTTLE
• UP TO 500 KM WITH ONE WAXING

DETAILED INSTRUCTIONS AND RE-LUBRICATION

FOR ACHIEVING THE BEST LUBRICATION PERFORMANCE

Clean and degrease the chain thoroughly using a detergent, a chain cleaning device, or brush. Rinse well with water and let dry completely. Shake the bottle well and begin applying lube 1 drop per roller while pedaling backward.Use fingers to smoothen out and work the lube into rollers while back-pedaling at least 3-4 revolutions. Repeat applying 1 drop per roller, using the same method as above. Lightly wipe off excess lube from the surface to avoid excess dirt build-up. 

AFTER RIDING IN DAY-TO-DAY USE

Wipe the the chain with a cloth or tissue until it appears clean. Apply lube 1 drop per roller like instructed above. Thorough cleaning is only needed if the chain extremely contaminated. Depending on conditions, typical relubrication interval is usually 50-500 km.

Check out Rex Black Diamond here.

Article originally posted by Rex:
https://rex.fi/en/bike/rex-black-diamond-chain-lube