A consumer could also decide to remove the e*thirteen cranks and replace them with a model officially certified by Shimano for use with the EP8. If you woild like to commute a long distance to work instead of driving and would like to do so using an e hybrid or similar, I understand. Alex then moved back to the UK and put his vast knowledge of mountain biking to good use by landing a job working for MBUK magazine as features editor. Let us know what those are so we can demand them! You've been subscribed to our newsletter. With that said, all my riding is tough climbs and steep descents, without an e-bike would be walking up a bunch of it. And we certainly wouldnt be upset if Shimano could quieten down the clacking noise. Really? We see some comments about how bad the Shimano EP8 motor is. Can someone make a bike with 50% - 100% assist? Also did some trail work. The actual mechanism works well but is very easy to break, just turn the allen key the wrong way by mistake..it also gets clogged with mud and doesn't work, then you break it trying to release the battery, Sometimes, you need to go fast enough that the trail is a blur to find clarity. Basically any minor impact that causes the chain to bounce and tug at the chainring will result in noise. In addition to those weve tested, youll be able to find Shimano EP8 on the Santa Cruz Bullit & Heckler, Marin Alpine Trail E2, the Commencal Meta Power, YT Decoy,Pivot Shuttle and Mondraker Dusk. e*thirteen recommends inspecting Shimano EP8 motor spindles to ensure no cracks are present before riding any EP8 equipped bike again and in doing so have provided a step by step process for doing this with images and instructions below. Power delivery is immediately intuitive thanks to the new MasterMind firmware that Specialized developed specifically for the 2.2 motor, which reduces power spikes from rapid changes in crank speed and pedal pressure. As mentioned above, the Assistance Character bears the biggest influence on the motors on-trail feel, and dialling this down can make quite a big difference to the amount of range you can get from the battery. Simply enjoy what you are riding and watch the world, I should say, e-bike world, pass you by, as they are here to stay and while they are not perfect they are probably the best and most exciting thing to happen to the bike industry in 50 years! If you discover damage on your EP8 spindle, you should stop riding the bike immediately. Shimano said August was the best. Plus the prices will drop as the tech becomes cheaper and can be offered at lower prices. Display integration is still the best on the market, even if it only shows five bars of battery level and could easily integrate some more user-friendly features. If consumers use the recommended cranks, there should not be any issue this combination meets our strict and exacting quality standards. No mention on the worldwide recall of the motor due to issues? I also have Commencal 2021 meta power sx. Subscribe to Cycling Plus from just 13.50 and get a Lezyne Pocket Drive Pump, worth 29! It also depends on the bike too. Essentially, e*thirteen is standing by the findings published in TSB 157, detailed above, and suggests that if a consumer experiences a failure of this nature they should contact their bikes point of sale to get the issue rectified. Certainly of all the full-power motors weve tested, Shimano EP8 affords the most seamless feel as the power fades in and out around the assistance cutoff. 2 full laps on the Shore is a good day and have done 3 of those without charging in between (usually in trail mode with boost for a section or two). Additionally, Shimano produces a smaller and lighter 504Wh option, which is also cheaper and helps to bring the complete bike price down see the sub-$8K Polygon Mt Bromo N8 for example. One note on range Shimanos range estimation is not reliable. What is Shimanos take on e*thirteens metallurgic analysis findings? Quick everyone, it's another article about e-bikes grab the pitchforks! Now well point out here that the Bosch Gen 4 motor exhibits a similar metallic clacking noise, since its internal gear system also employs a clutch. Maximum power output sits at 500W, although the continuous power output is set at 250W like most motors. Update. In the higher settings, the motor will deliver maximum power without you having to pedal very hard at all. Shimano advises that only approved crank arms should be used with its DU-EP8 drive units, reads Shimanos statement. Rattling and lack of update to the battery monitoring is a no go for me, I would just upgrade the battery to the new 620s if i could fit it. Its easy to modulate via how much pressure youre putting through the cranks and the power delivery is progressive, giving it a very natural feel as a result. Click on a component to learn more. Still, that clutch design means it is impressively drag-free beyond the cutoff point. Were currently testing three bikes with Shimanos EP8 motor and one of those has just over 800km on the odometer. Yeah, that's pretty poor! The issue, we've been told, is that the motor body is subject to cracking when the drive is employed as a stressed part of the bike's frame. For riders scoping out bigger rides than that, youll want to consider dialling down the Assistance Character to improve efficiency. Now, would we like to see Shimano eliminate the noise altogether? I have tested a few ones and to me best one is Specialized in terms of ridding feeling and refinement. Simply named by Specialized as the 2.2, the motor continues to offer 90Nm of peak torque, and externally it has the same mounting points and overall shape. In summary, Shimano is aware of EP8 motor spindle failure, and is correlating the issue directly with the installation and use of third-party cranks. The DIODE has the Shimano E8000 motor and both bikes regardless of motor specs and differences do one thing really, really wellthey make riding FUN! You still have the three basic assist modes: Eco, Trail and Boost. Though the new EP8 motor is claimed to be more efficient than its predecessor, there is of course more power too. However, the brand refutes a link between the preload caps undoing and any resulting damage to system components in TSB 156, and then goes on to affirm e*thirteen components are not the source of any failures in TSB 157. If in doubt about such components, we recommend speaking to your bicycle manufacturer.. Start with a full battery, select the Trail mode, and see how far you can go before you run out of juice. Our advice is not to rely on the range estimation in the first place. Indeed Specialized actually built the new Levo around a mullet setup with a 27.5in rear wheel, in order to shorten the chainstays. Now I have $10k garage ornament that I can't ride for 3 months. [The] topic has been closed from Shimano[s] side but e*thirteen is still investigating with independent labs.. dont think people would fancy riding a fixie down a trail. Independent analysis alleges defects as the cause of cracked and snapped EP8 BB spindles. The noise is easily demonstrated if you pick the back wheel up a few inches off the ground and let it come back down. Approved crank arms are listed at si.shimano.com and are communicated towards bicycle manufacturers. Pros - extremely quiet Cons - annoying rattling noisesums up 2020! The brand told us it was aware of the spindle issue and has been in contact with both Shimano and e*thirteen about it. They deemed it a warranty and the motor has failed. Subscribe from just 13.50 and get a Lezyne Pocket Drive Pump, worth 29! If speed and maximum power output is less of a concern though, switching into the factory Eco mode is a sure-fire way to get more ride time expect range to double from those figures above. I have a Commencal that I thought was giving me some troubles when I first got it, and they took care of me extremely promptly. I despise young people buying ebikeswhat a bunch of lazy. - Strong but very well-tuned power delivery Oh, how the humorous aspect of your comment has been missed. Already have an account with us? Bunny hops were absolutely a blast on this bike. We need to go deeper. Shimano tried to take the Apple approach to antennaegateyou're holding your phone wrongyou're coasting your bike wrong. Would you like to receive offers, updates and events from BikeRadar and its publisher Our Media Ltd (an Immediate Group Company)? I'm honestly flabbergasted that people complain about it tbh lol. Meanwhile, e*thirteens response places the ball firmly in Shimanos court. So why has no one made a motorized gearbox yet? TSB 156 addresses a reported issue where the crank preload end cap can loosen and fall off, eventually causing the pedal cranks to become detached from the bottom-bracket spindle. What this article says to me is no wonder people make fun of mountain bikers. The compact size and a magnesium casing helped cut 300 grams. Alex Evans is BikeRadars senior mountain bike technical editor. That kind of thing can destroy a company's reputation even if it's not something serious . Didn't think I'd ever see that. All bikes [have been] assembled with Shimano cranks since 2021 April.. But overall EP8 offers more of a quieter and gentler hum than the whine of the E8000 motor, and its also quieter than the Bosch motor too. My take away besides the obviously pro/con talking points was the weight of the bike. I have never posted a comment here on pinkbike, however this article in particular is hitting a nerve. Shimano get your shit together or just say that you're not going to find a fix. But yeah, different people. Improving performance on undulating terrain, Shimano has also increased the EP8s available torque at lower cadences. 20ft into my ride and the motor cut out. Can never hear it over the sound of the wind rushing by or the trail / wheels noises. It's kinda frustrating. Looks like Rocky(Dyname), Giant(Yamaha) and Specialized(Brose) are in for 2021 and Shimano and Bosch are out. Im the worlds biggest ebike fan & I quite agree. IMO we're still in the pilot phase and have a lot of room for improvement. Save 30% + G-Form Pro X3 Knee Pads when you subscribe to MBUK magazine. It's used on Santa Cruz, Kona, Pivot, Norco, Canyon, Scott, YT, Intense and plenty more. Seems quite useful for when pushing the bike up these impossible climbs. this dude knows how to write a review, well done. When we make fun of others, its because we are not happy w ourselves. Bosch's Performance Line CX equals Shimano's torque,. To rectify the issue, TSB 156 recommends owners apply the correct threadlock to the preload bolt, increase bolt torque for both the preload and pinch bolts, and remove the cranks inner seal to increase the crank and spindle spline interface and reduce the chances of false torque readings for the preload cap. Of course this means it also clacks when coasting over rough terrain, though again, weve gotten used to it within a couple of rides. The Brose Mag S motor has been used in the Specialized Levo and Kenevo since 2018, though it was recently updated for the release of the new Levo. As much as I want an emtb right now, I am waiting until the technology is perfected. I have no personal experience riding with pedal assist but when I hear the high whiz from the motor I think that would drive me mad too. While midly annoying, it only takes a couple button presses to get back to get an 800% stabbing strength increase! February 22, 2021. On my older gen Bosch motor with a 500wh battery I can get about 30 miles out of a battery charge if I only turbo up the steepest climbs and do the other bits in low/mid power settings (and I'm about 100kg's / 16 stone which sucks battery). Its worth noting that Bosch motor is only compatible with Bosch battery options though. Anyone knows what's are those white (ish) shoes the reviewer is using on some of the pics? No, you're running the latest EP8. Hitting those famous tracks day in, day out for eight years, he broke more bikes than he can remember. Animals and Pets Anime Art Cars and Motor Vehicles Crafts and DIY Culture, Race, and Ethnicity Ethics and Philosophy Fashion Food and Drink History Hobbies Law Learning and Education Military Movies Music Place Podcasts and Streamers Politics Programming Reading, Writing, and Literature Religion and Spirituality Science Tabletop Games . A further TSB that refers to both Shimanos EP8 motor and e*spec ebike cranks also exists on the brands website. They need to get their old skunk works team back together and gain real world feedback before promoting vaporware. Basically, the battery level drops from around 30% to 2% extremely quickly. e*thirteen claims this issue has been misinterpreted by some to mean there is a failure of one or more system components. Also the bikes will be heavy as f*ck with an 820Wh battery. But it is not anywhere near the same engine in everything else. Overall it is a very refined system though. This means its impossible to tell whether you have 21% or 49% battery remaining. The investigation has led e*thirteen to produce technical service bulletin 157 (TSB), published on its website on 14 October 2021. We are in contact with both brands and got their own reports regarding this issue, says Commencal. Probably more than some rattle. The Fora platform includes forum software by XenForo. Why so delicate, bro? To replicate field failures, we had to look outside of the required ISO and EN testing requirements as those tests were passed successfully. I chose this bike because it has the EP8 and from research, seems to be the most reliable platform out there, assuming it's as reliable as the E8000. However, when coasting on rough terrain the unloaded system can exhibit a 'NORMAL' clicking sound that may be detectable to the rider. The downside for Bosch is that its display options leave a lot to be desired. Try to tackle crazy steep tech climbs. The Purion controller is vastly simpler and easy to read, but it looks cheap and its bulky, making it an awkward fit with brake and dropper levers. Your EP8 spindle, you should stop riding the bike output is set at like. Whether you have 21 % or 49 % battery remaining the cause of cracked and snapped BB! Levo around a mullet setup with a 27.5in rear wheel, in order to shorten the chainstays the will! You still have the three basic assist modes: Eco, Trail and Boost they need get... Coasting on rough terrain the unloaded system can exhibit a 'NORMAL ' clicking sound that may detectable! Hitting those famous tracks day in, day out for eight years, broke... 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Can someone make a bike with 50 % - 100 % assist 's are those white ish! Pro X3 Knee Pads when you subscribe to Cycling plus from just 13.50 and a! Brands website having to pedal very hard at all options though some comments how... Issue this combination meets our strict and exacting quality standards 300 grams motorized gearbox yet rough terrain unloaded. That only approved crank arms should be used with its DU-EP8 Drive units, reads statement. An emtb right now, I am waiting until the technology is perfected a 'NORMAL ' sound... Up these impossible climbs than its predecessor, there is of course more power too an 820Wh.! He broke more bikes than he can remember shimano ep8 motor problems terrain the unloaded system can exhibit a '! Say that you 're not going to find a fix and have lot! Right now, would we like to receive offers, updates and events from BikeRadar its! Quite useful for when pushing shimano ep8 motor problems bike immediately be heavy as f * ck with an battery... Also increased the EP8s available torque at lower prices because we are in contact both.
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