OHM XS 750 Review

26er Pro Reviews Video

Command Console
The Command Console (BionX G2 Console), is sort of like the e-bike’s brains, and it has a multi-functional display much like a normal bike computer. It displays the speed and battery charge level, along with either the distance, odometer, chronometer or average speed, which is chosen with the Crono button. It shows the level of Assistance (motor assist) or Generation (resistance) on the bar graph, which are set by using a combination of the increase (+A) and decrease (-G) buttons. You can arm an anti-theft alarm from the console, so that if the bike is moved a 1/4 wheel turn, it emits a loud noise, and puts itself into a level 4 resistive mode (maximum). There is a Throttle button system, which can do the increase and decrease assistance and generative settings (same as the console), and in addition, pressing the red throttle button itself bypasses any assistance level setting and provides maximum power, much like a scooter. The LCD screen’s backlight can be adjusted for either day or night usage.

 

Bike Motor and the Battery Pack
The bike uses the BionX 350 Watt electric bike motor (BionX 350HT L Power Series), which is a brushless DC motor (BLDC) that provides 9/40 Nm or 6.6/29 lb-ft of torque, and weighs in a 4.7 kg or 10.4 lbs. It’s a regenerative motor, and by either activating the brake lever (like on a steep downhill) or using the Generative mode in any of its 4 resistive levels, the motor transforms your momentum into energy, and stores it back into the battery, meaning it recharges on the fly. The motor is intelligent, and uses a torque sensor to measure your pedaling force, and then automatically provides assistance proportional to your effort.

Their proprietary battery is a rechargeable Lithium Manganese (Li-Mn), which provides 37V 9.6ah of power, and weighs in at 4kg or 8.8 lbs (measured at 8.95 lbs). It can ride up to 56 miles on a single charge, and can do a fast 20 minute charge to 90% capacity, and a full charge in 3 hours. It has a lockable quick-connect system, so that it can be removed for charging (at home or office). It comes with a Li-Ion battery charger, that plugs into a port on the top of the pack.

Parts Spec
The XS 750 comes with a pretty nice accompaniment of parts, and is well suited for commuting and moderate mountain biking. It uses a Shimano Deore XT drivetrain (3×9), with cranks (3 chainring’s and chain guard), cassette, chain, front and rear derailer and shifters. Braking is provided by the excellent Magura Louise system, with a 180/180 rotor combination, and the larger rear rotor size is for regeneration purposes. Front suspension is the Magura Menja fork with 85mm of travel, and the rear is softened by a Suntour suspension seatpost, with a Velo saddle. The steering system is Ritchey setup, and includes a stem, handlebar and headset. The wheelset is the Mavic 317, and is accompanied by the Schwalbe Marathon Plus tires, and everything is nicely covered by some polycarbonate front and rear fenders. For evening rides, it has front and rear Busch & Müller lights, which are powered by a Shimano Dynamo Front Hub (6V -3W). Last but not least is a kickstand, a rack, and flat pedals.

Next » Impressions

About the author: Brian Mullin

Brian has been part of the Mtbr team since 2007, where he has become an integral member of the review and test staff, specializing in technical articles. He likes to push the limits in all the sports he obsesses in, whether it's mountain biking, whitewater kayaking, extreme skiing, or sport climbing. He takes those same strengths and a good dose of insanity to his reviewing and writing on mountain biking products, creating technical, in-depth and hyperbolic articles. Whenever he's not on the bike, he might be found watching MotoGP racing, otherwise look for him out on extremely technical singletrack.


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  • patproctor says:

    Cycle is lacking in performance. battery mileage not as indicated, excessive $ for replacement parts/battery, extreme lack of customer service professionalism.this technology has a major flaw-short battery life-its the most vital part of the bike, needs more research & developement or just keep scamming people

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