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\n \n \n \n \n \n\n \n The EP8 system is sleeker compared to the E8000 motor, which should make it easier for bike designers to \u2018conceal\u2019 the motor.\n \n Russell Burton\n \n\n\n \n \n \n\n \n The modes have customisable levels of torque.\n \n Russell Burton\n \n\n\n \n \n \n\n \n Rider profiles can be changed using the on-board display.\n \n Russell Burton\n \n\n\n \n \n \n\n \n The system is turned on using a top-tube mounted button.\n \n Russell Burton\n \n\n\n \n \n\n\nShimano\u2019s brand-new electric bike DU-EP800 motor system boosts torque to 85Nm from the older E8000\u2019s 70Nm torque motor, while maintaining the same battery range in Trail mode and increasing it in Eco mode.\nThe new motor is lighter than the old one, too.\nIt weighs a claimed 2.6kg, which is a 300g saving on the previous motor, thanks to its all-new magnesium casing. Shimano\u2019s managed to reduce the volume and therefore the width of the new motor by 10 per cent, too.\n\n \nFive things you need to know about Shimano\u2019s new DU-EP800 motor\nBoosted to 85Nm torque\nReduction in weight to a claimed 2.6kg\nNarrower 177mm Q-factor\nClaimed 36 per cent decrease in pedalling drag\nSame range as the old model in Trail mode, increase in range in Eco mode\n\n\n \n Shimano has also tweaked the EP8\u2019s software to produce a \u201cmore natural feeling e-mountain bike\u201d. It\u2019s done this by adjusting how the three support modes work and offering user-customisability of those modes via itsE-Tube Ride and E-Tube Project apps.\nBosch boosts torque, tweaks eMTB mode of Performance Line CX motor\nBest electric bikes reviewed: our favourite ebikes\nShimano DU-EP800 electric bike motor details\nMore torque, less weight\n\n The DU-EP800 motor is smaller and lighter than the E8000. Shimano\nAt the centre of Shimano\u2019s new DU-EP800 motor is an increase in maximum torque from 70Nm for the E8000 system to 85Nm, now rivalling Bosch\u2019s recently updated Performance Line CX motor\u2019s output.\nAt the same time as increasing torque, Shimano\u2019s managed to reduce claimed weight to 2.6kg from 2.9kg for the old E8000 system. This 10 per cent reduction is due to a magnesium drive unit casing and Hollowtech crank spindle, which also claims to boost stiffness.\nShimano claims this gives it a \u201cbest-in-class\u201d power to weight ratio.\nReduced friction, bigger range\n\n The EP8\u2019s internals have been redesigned to reduce weight, improve range and decrease drag. Shimano\nBattery efficiency, and therefore range, has been improved, too. Shimano\u2019s done this by decreasing pedalling drag from inside the motor by 36 per cent compared to the E8000 system.\nPedal drag is most noticeable when the motor system is turned off \u2013 some people have likened pedalling an electric bike without assistance to riding through glue. These sensations should be reduced with the EP8 system.\nThe reductions have been achieved by altering the motor\u2019s seals, changing its three-stage gear design and using a new one-way clutch, which also gives the motor quicker engagement when the rider starts pedalling and smoother disengagement once the rider stops.\nIts range has increased by 20 per cent in Eco mode compared to the E8000 unit and, even though torque has increased overall, battery range in Trail mode remains the same.\nBetter thermal management, lower volume\n\n The fins have been changed to improve cooling. Shimano\nThe new magnesium drive unit\u2019s body has better heat management and improved cooling fins compared to the previous system. New EW-SD300 wires also contribute to better heat control thanks to their smaller size. They can also transmit more data, opening up the potential to expand Di2 and other accessory compatibility and functionality.\nImproved heat management means the motor can operate at maximum torque for longer without reductions in performance or other reliability issues.\nShimano has also managed to reduce its decibel output, claiming it makes the same amount of noise as the E7000 unit.\nNot only has its audible volume been reduced, but its size has been cut by 10 per cent over the E8000. This, Shimano claims, improves ground clearance, makes the motor look sleeker and results in a narrower 177mm Q-factor.\n\n The Q-factor is now 177mm. Shimano\nDespite its reduction in size, it uses the same frame mounting pattern as the E8000 and E7000 units, which means bike manufactures can spec any three of those motors on their frames.\nIt also opens up the possibility of retrospective upgrades to existing E8000 and E7000 owners, however Shimano\u2019s press release doesn\u2019t mention whether this is or isn\u2019t possible.\nUpgraded accessories\n\n \n \n \n \n \n\n \n The EP8 groupset has dedicated XT-level cranks.\n \n Shimano\n \n\n\n \n \n \n\n \n Although Deore isn\u2019t etched on them, they look like Deore cranks and you can bet they will be seen on more affordable EP8-equipped bikes.\n \n Shimano\n \n\n\n \n \n \n\n \n The system has a dedicated chainring.\n \n Shimano\n \n\n\n \n \n \n\n \n A dedicated chain device is compatible with both 56.5mm and 53mm chain lines.\n \n Shimano\n \n\n\n \n \n\n\nThe new DU-EP800 will have its own XT-level FC-M8150 crank arms that don\u2019t require any axle spacers and are available in 160mm, 165mm, 170mm and 175mm lengths.\nA more basic FC-EM600 crank \u2013 that looks suspiciously similar to Shimano\u2019s new Deore M6100 crankset \u2013 is also available with the same length options as the XT version.\nA new DU-EP800-specific CD-EM800 chain device is available and features a mud-shedding design. Thanks to adjustability, it\u2019s compatible with 56.5mm and 53mm chain lines.\nThere\u2019s also a 12-speed chainring that\u2019s only compatible with 56.5mm chain lines or Super Boost 157mm rear axle bikes without chain devices.\nNew remotes and displays\n\n The remote\u2019s buttons are now more concave for easier operation. Shimano\nThe remote control unit has also been updated with more concave buttons, which Shimano says improves operational comfort and control while making it easier to use the buttons.\nThe new remote \u2013 SW-EM800L \u2013 is also I-spec compatible which means it should be possible to attach compatible dropper post levers to it, such as Shimano\u2019s SL-MT800-IL.\n\n The mode selector remote has been redesigned and is now I-spec dropper post lever compatible. Shimano\nThe computer display looks unchanged and works in the same way as the old one. It does now have the option to change between customisable rider profiles (more on that shortly) and can connect to the smartphone-based E-Tube Project app via Bluetooth and compatible third-party bike computers to share gear and battery information.\nBigger batteries\n\n The EP8 system is compatible with Shimano\u2019s bigger 630Wh batteries. Shimano\nThe new DU-EP800 motor system is compatible with Shimano\u2019s electric mountain bike batteries including its newest and biggest BT-E8016 and BT-E8063 630Wh units or smaller, but faster charging 504Wh BT0E8035-L battery.\nShimano DU-EP800 electric bike motor software and application details\nA software re-design\n\n EP8 connects to smartphones using Bluetooth. Shimano\nAs well as the physical changes to increase torque, Shimano\u2019s re-written its electric mountain bike software to adjust the way the motor\u2019s torque is delivered. It hopes this will make its assistance feel more natural.\nThe amount of pedalling input torque needed to access assistance has decreased across the modes. Boost mode now only needs 20Nm of rider torque for the full 85Nm of assistance.\nSimilarly, Trail mode now delivers peak power sooner, requiring only 60Nm of rider input instead of 100Nm for the E8000 series motor and is claimed to be more responsive than before.\nEco mode only delivers 30Nm of maximum torque and that figure is reached using a similar amount of effort to the E8000 system.\nDeep mode customisation and application updates\n\n Power levels are customisable on the E-Tube app. Shimano\nWhen connected to the E-Tube Project app, it\u2019s possible to customise the torque levels of the three riding modes between 20 and 85Nm.\nShimano\u2019s introduced rider profiles, too. Assistance levels can be set for different rider profiles which means the bike can be quickly transformed from an endurance, battery-saving bias to an outright power rig.\nThe on-board display permits profile switching on the fly.\nShimano E-Tube Ride app updates\nThe E-Tube Ride app \u2013 the second Shimano electric bike companion app used to display on-the-hoof information on a smartphone\u2019s screen \u2013 has been updated, too.\nNew features include ride history and live maps plus updates to the user interface. The app will now automatically sync rides with Strava, too.\nThe navigation feature uses a Mapbox base map that Shimano claims has \u201cstreet-level detail and high-level path detail in forests and trails,\u201d although information about how the system works is limited and makes us wonder whether Shimano plans to produce a more feature-rich display and onboard computer like Bosch\u2019s Nyon and Kiox systems.\nShimano DU-Ep800 electric bike motor initial ride impressions\nTechnical editor Tom Marvin has managed to spend some time on the EP8 system ahead of the launch, but hasn\u2019t spent enough time on the bike yet for a full review.\n\n Tom struggled to reach maximum assistance even when well below the 25kph limit. Russell Burton\nI was lucky enough to get hold of the updated Merida eONE-SIXTY ahead of the EP8\u2019s launch, in order to get some ride impressions on the new motor.\nWhile I\u2019ve not had as much time as I\u2019d like on Merida\u2019s enduro-focused electric mountain bike so far, I do have some brief ride impressions of the new motor to share.\nFirst up, it\u2019s worth noting that the accompanying E-Tube Project and Ride apps from Shimano have not been available ahead of launch, so the functionality to adjust the power settings, power delivery and create my own profiles has not been tested yet.\nHush-hush\n\n The EP8 is impressively quiet. Russell Burton\nWhat is immediately noticeable is that the motor is significantly quieter than the E8000 motor that preceded it and those on offer from Bosch. While there is some background motor whine, it\u2019s very quiet overall, something that many riders will appreciate.\nPower on and on\u2026\nThe initial power delivery, in both of the pre-set profiles, is very smooth.\nIn Eco mode the motor\u2019s support is very subtle and will likely work well for riders looking for that little helping hand on hills and away from traffic lights, rather than those looking for the \u2018full\u2019 ebike experience.\n\n The charge port is located above the bottom bracket. Russell Burton\nIf the reported range extension is correct, the EP8 could be great for riders on bike tours looking for assistance for their loaded bikes over longer distances.\nIn both Trail and Boost modes the EP8 provides a very smooth delivery of its power throughout its power band.\nAt the top end, when the assistance drops off, there\u2019s no cliff-edge in support, so that transfer to fully-human powered riding isn\u2019t quite as demoralising.\nWhile this works well in Trail mode, I did feel that in Boost mode I wanted to be able to exploit the motor\u2019s power all the way to the end of its assistance. I suspect, though, that with the app\u2019s adjustability, this is something that should be able to be programmed in.\n\n My Merida test bike has the integrated Shimano BT-E8036 battery. Russell Burton\nTrail mode is likely where mountain bikers will spend most of their time. Here, the motor\u2019s assistance level seems to easily complement the effort put through the pedals.\nThis means there\u2019s plenty of torque control when manoeuvring up steep, loose or technical climbs, without much in the way of uncontrolled wheel spin.\n\n There\u2019s more ground clearance because the motor\u2019s size has been reduced. Russell Burton\nWhile the previous generation E8000 motor was very well mannered, the EP8 feels just that little more refined in this respect.\nAs mentioned, I would like to spend more time on the Merida eONE-SIXTY to get a better grip of both the bike and the motor.\nSome niggles\nHowever, if I was to draw any early criticisms, it would be that I struggled to get the motor to provide its full level of assistance (as indicated by the sliding scale on the motor\u2019s display unit) even when tackling steep climbs and putting in as much manual effort as I could.\n\n The motor\u2019s power cut-off too quickly. Russell Burton\nThis may well be a result of the power delivery tailing off to give a smoother transition to non-powered riding, but on steep pitches I was so far off the 25kph limit that, really, I\u2019d like the full 85Nm of power to be easily delivered in this situation.\nAs ever, more time, and access to the app, may negate this initial criticism.","image":"@type":"ImageObject","url":"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2020\/08\/Shimano-EP8-groupset-ddf2f02.jpg?quality=45&resize=2400,1600","width":768,"height":574,"headline":"Shimano boosts ebike power with brand-new DU-EP800 motor","author":["@type":"Person","name":"Alex Evans"],"publisher":"@type":"Organization","name":"BikeRadar","url":"https:\/\/www.bikeradar.com","logo":"@type":"ImageObject","url":"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2019\/03\/cropped-White-Orange-da60b0b-04d8ff9.png?quality=90&resize=265,53","width":182,"height":60,"speakable":"@type":"SpeakableSpecification","xpath":["\/html\/head\/title","\/html\/head\/meta[@name='description']\/@content"],"url":"https:\/\/www.bikeradar.com\/news\/shimano-du-ep800-motor\/","datePublished":"2020-08-31T16:00:16+00:00","dateModified":"2020-09-02T11:52:27+00:00"}] Shimano boosts ebike power with brand-new DU-EP800 motor More power, lower weights and less friction with app integration and improved software 2ff7e9595c
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