The RIKEN AL is the entry point power crank from Quarq and unlike the models above it, is the only model featuring forged aluminium crank arms. Despite adding weight, the use of durable aluminium helps make the RIKEN AL one of the most advanced power meters at the price. Like all of the Quarq models, which are built around the same power meter, the RIKEN AL offers the same functionality as the top of the range models in terms of power measurement, accuracy and metrics and features the same innovative features. After all, it is only the cranks to which the powermeter is mounted that change. The RIKEN AL is the perfect choice for those riders seeking to make their first foray into the Power market, with dual leg measurement at under £700 it represents exceptional value for money when taking into consideration the level of accuracy and precision of the metering. The RIKEN AL will also serve perfectly as a power meter for commuting, training or winter bikes.
The RIKEN AL is basically an aluminium-armed version of the RIKEN R - compatibility remains the same in terms of chain-ring mounting and the cranks will accept the likes of SRAM, Shimano (10 speed only), Rotor (130BCD Only) and any number of aftermarket 5 bolt chainrings such as Specialities TA and Praxis. By swapping chainrings and assuming a suitable bottom bracket, it is possible to move the chainset from bike to bike and to maintain your powermeter across disciplines; from Road to TT, Triathlon and Cyclocross. Unlike the RIKEN R however, the RIKEN AL is NOT compatible with the BBRight standard.
Quarq was established in 2006 by Jim Meyer, a maths obsessed man with a penchant for tinkering. After 5 years developing and manufacturing Quarq powermeters and after early collaborations with the company, SRAM acquired Quarq. At this point, Jim revealed a secret Powermeter prototype that was a far cry from previous designs and by drawing on SRAM’s engineering experience helped deliver the SRAM Red powermeter.
Quarq are one of the best value powermeter solutions on the market today. They measure force power from both legs at the precise point of muscle energy transmission to the cranks – the spider – which are machined to exacting standards in-house.
Quarq’s power meters are accurate and importantly, consistently so. As a result of rigorous testing they are able to offer repeatable data to within +/-1.5%. Quarq believe that they have the best balance when it comes to data presentation offering riders useful metrics that deliver the right amount of information needed to improve but without swamping the user with data that is extraneous. For example they provide dual leg data because studies have demonstrated that variance in asymmetry between left and right leg power delivery can be as much as 48% (depending on output) and that the asymmetry varies with intensity. Consequently, while one-legged power meters are useful for gauging overall training load, in order to improve you need the output of both legs.
Similarly, Quarq do not muddy the water with Force Vector data (the direction of power application), stating that studies have shown the natural pedalling technique of a rider is most likely the most efficient and trying to modify pedalling technique to create more ‘pull’ on the upstroke can have a negative effect on gross efficiency. Ergo, not necessary! So then, regardless of crank choice, all the Quarq cranks offer an accurate, precise and measured approach to power metering and data delivery in order to provide the rider with the optimum information for them to improve.
Quarq employ a bucket load of tech to ensure hassle free reliable and repeatable data. Features like 10K and OmniCal allow for variances in temperature and the ability to change chainrings without needing to recalibrate the meter each time. Quarq's own Qalvin app allows for firmware updates and diagnostics while an IPX7 waterproof rating means you can ride in a meter of water for half an hour with no problems - if you want.
The Quarq RIKEN AL power meter is a direct force power meter that measures power output from both legs with +/- 1.5% accuracy. It uses foremost materials and works for every cycling discipline - road, triathlon, cyclocross and adventure. The lightweight aluminium spider houses integrated electronics, a CR2032 battery, LED indicator and visible ANT+™ ID. Quarq's Power Balance captures left and right drive strokes for optimal technique development. OmniCal™ gives you a choice of chainrings with no compromise on accuracy. With lengths of 165-175mm, RIKEN AL can take your cycling to the next level.
The Quarq RIKEN AL cranks are available in both Standard 130 and Compact 110 bolt circle diameter variants. Chainrings are sold separately but the choice is yours from SRAM, Shimano (10 Speed) Rotor (for 130BCD Only), Praxis and many more. The 4 most common crank lengths are available to suit most riders and disciplines and 2 axle options; GXP and BB30, ensure a wide range of compatibilities when used with the correct bottom bracket - which is also supplied separately - ultimately this makes the Quarq RIKEN AL an excellent choice for the rider looking to step up to power and also makes moving power between bikes relatively painless and futureproof.
Though heavier than the RIKEN R, the weight for the cranks is 818g for a standard 110BCD, 172.5mm GXP crank.
If you are using an 11 speed Shimano system then the ELSA RS should be your crank of choice