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Shimano EP8 electric bike drive unit unveiled with more torque, less ‘lurch’

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Shimano EP8 electrical bike drive unit unveiled with extra torque, much less ‘lurch’

It’s lighter, it’s stronger, it’s higher… It’s the brand new Shimano EP8 mid-drive motor system for electrical mountain bikes.

The bicycle element big has simply launched its newest electrical bicycle drive unit with a variety of efficiency upgrades.

Shimano releases new EP8 e-bike motor

The brand new Shimano EP8 mid-drive motor unit packs much more torque than Shimano’s earlier drive models, as much as 85 Nm.

Whereas growing the drive’s torque, Shimano was additionally in a position to concurrently scale back the load of the unit to only 2.6 kg (5.7 lb).

As the corporate defined:

“EP8 delivers as much as 85Nm of torque, a 21 % improve (in Path and Enhance modes) over the STEPS E8000 motor platform (Shimano’s earlier top-end eMTB drive system).

The brand new magnesium drive unit casing design delivers a 300-gram (0.66-pound) weight reduction (5.7-pound whole weight) in a ten % smaller type issue.

With 85 Nm of torque, Shimano is competing head-to-head with Bosch’s most powerful mid-drive motor. However for any riders who don’t need such excessive torque on faucet, Shimano’s E-Tube Undertaking app permits riders to regulate the utmost torque wherever within the vary from 20-85 Nm.

shimano ep8

The Shimano EP8 drive unit additionally contains a new gear design that reduces gear drag by 36%. That ought to assist it really feel extra just like pedaling a standard bicycle. The lowered motor noise will even assist riders neglect that they’re pedaling an electrical bike as a substitute of an acoustic bike.

As the corporate continued:

Due to a brand new seal construction and equipment design, drag is lowered by 36 %, getting a lot nearer to the conventional pedaling feeling of a standard bike. Riders will really feel a smoother cutoff as they attain the utmost help velocity after which profit from lighter pedaling with out help.

The brand new Shimano EP8 motor unit is designed to combine with Shimano’s larger capacity batteries that were announced earlier this Spring.

A serious a part of the brand new motor’s programming consists of an emphasis on smoother energy supply.

A brand new algorithm was developed to extra precisely calculate and apply the correct quantity of energy primarily based on the rider’s pedaling, which additionally leads to a slight vary improve as nicely resulting from much less power being wasted when it isn’t wanted.

The brand new algorithm additionally helps enhance a singular quirk of earlier Shimano mid-drive motors that noticed e-bikes fitted with the motors generally lurch ahead when used within the highest pedal help mode.

As Shimano elaborated:

“The brand new algorithm consistently calculates the perfect help ratio for the scenario. This easy idea improves the experience high quality in all conditions, eliminating the lurch ahead and wasted power because the bike accelerates whereas additionally persevering with to supply extra help when the path will get harder and the rider works tougher.”

shimano ep8

The discharge of the EP8 sees Shimano holding regular with different business leaders reminiscent of Bosch and Brose which every launched their very own new motors not too long ago.

New electrical bicycles that includes the Shimano EP8 drive system are anticipated to debut later this yr.

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