A dinamo or recharging when braking or something That's what I'm still waiting for! Probably more than some rattle. @tomdesoals: That excuse that Shimano put out by their customer service dept . As mentioned earlier, the Bosch motor does feel punchier than Shimano EP8, with noticeably stronger support at lower cadences. me-bikes: Ibis Exie, Ibis Ripley V4, Ibis Ripmo V2. Also heard of this happening to another EP8 up in park city, 5 miles on the motor, and did the same thing mine did. Gear or similar. For a mechanic, mechanical noise is a no-no by the end of the ride Id be destroyed mentally! You can improve efficiency by limiting the maximum torque, though it is still possible to get maximum power out of the motor by pedalling at a higher cadence, so you wont necessarily get more range by limiting torque. If there is no threadlocker patch, move onto point 2c. Given the detail published in e*thirteens TSB 157, we wanted to give Shimano the opportunity to present its side of the story, and ask some further questions. Do you think it could be only an issue with Carbon frames then? This is particularly noticeable on traction-poor climbs, even when starting from a standstill. I own the Levo SL, and it is the most refined ebike I have ridden so far. Meanwhile, e*thirteens response places the ball firmly in Shimanos court. Again, shift it down one notch at a time to get a feel for the change. Just got my first 29er. SHIMANO STEPS EP8 Left Switch Unit for Assist VIEW PRODUCT Cycle Computer SC-EM800 EP8 Cycle Computer VIEW PRODUCT SC-E5003 SHIMANO STEPS Cycle Computer with Assist Switch (SD300 port) VIEW PRODUCT Speed Sensor EW-SS302 Disc Brake Speed Sensor (SD300 type) VIEW PRODUCT EW-SS301 SHIMANO STEPS Disc Brake Speed Sensor for EW-SD300 VIEW PRODUCT That just isn't real world riding though, you just don't spend all your time in boost mode. That rattling feeling comes from one way bearing. It is MUCH less powerful, but there is no rattle, no weird cut off, no jerky pedal action. - Strong but very well-tuned power delivery Commencal which has sold a number of its Meta Power electric bikeswith an EP8 motor and e*thirteen crank combination replied to our inquiries. No, you're running the latest EP8. We see some comments about how bad the Shimano EP8 motor is. I was sure it was a motor issue till I realized I needed to put the speed sensor on the new wheel. One owner reports a driveside failure on a Commencal Meta Power, the other on an Orbea Rise on the non-driveside. Most brains will be capable of doing this, as the noise in question isnt actually signalling a fault with the motor. However, you do pay for all that refinement and integration. I have ridden ebikes great fun,addictive, you gain some things , but lose some things as well, like all bikes a compromise. We suspect the amount of riding required to replicate this problem far exceeds the number of kilometres an average bike tester will do on any given model. I think the only way it can get even close (And still doesn't) to that statement, is riding 25km on an analogue, or 50km on an ebike. I've already posted this on the Commencal Meta SX Power thread, but wondered if other bikes with the Shimano EP8 motor and battery have seen a similar problem. The Shimano EP8 RS of the Orbea Rise does not present physical differences concerning the EP8 that we can see mounted on other e-mtb's. Its dimensions and weight are the same. Personally, were ok with downshifting and spinning our way up a steep incline its better for the health of your knees, and its likely better for the health of the motor too. At my age 69, if it isn't fun, exciting, and challenging, count me out! I had this happen on my Orbea Rise but with different circumstances. Start with a full battery, select the Trail mode, and see how far you can go before you run out of juice. I have not heard of a recall, so I did some digging. 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. I want to use the Shimano EP8 motor for a small production of solar bikes. The maximum rider support was raised to 400%, compared to the E8000's 300%. Over the past six months of riding, the Shimano EP8 motor has really impressed us with just how much punch it delivers from such a lightweight and compact package. On top of that, Shimano also appears to be cool with brands building their bikes with non-Shimano batteries. Along with the EP8s magnesium casting, heat sinks and polished logos, it affords a classy look not an easy feat for an e-MTB. Thats given us plenty of saddle time to compare and contrast the new motor not only with E8000, but also with the latest Bosch Gen 4 motor and the Brose-manufactured 2.2 motor in the new Specialized Levo. 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. 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. While the EP8s performance on the climbs is generally excellent, we have occasionally wished for a little more overrun for clearing technical features. Quote Start New Topic Post a reply to: SHIMANO EP8 - won't turn on (new bike) 681 72K views 5 years ago If your E Bike is running a Shimano Steps pedal assist motor, there are a few maintenance points that you should know! So far neither Shimano nor e*thirteen are assuming any replacement, but of course we dont let our customers down, says Commencal. Make it 100 mile range, and I'm in. 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. "While we dont expect people to ride with their phone on their handlebars when mountain biking" - Buddy, you must not have seen many e-bike riders. The Fora platform includes forum software by XenForo. The brand suggests EP8 owners should inspect their motors spindles for damage or cracks originating from the drilled hole used for the pedal crank retainer hook, located on the splined portion of the axle. It's significantly more muscle, which was much-needed in order for Shimano to keep . Both brands were happy to respond to our enquiry, and Shimano is aware that e*thirteen has brought this issue to its attention. Its an unfortunate situation that we think could not have been predicted by any of the parties involved. the rattle it because the sprag bearing that used to be used in most motors has been replaced by DT swiss style star ratchet drive rings. In addition to the challenge of having remaining battery life displayed as five bars, the range estimation tends to drop quite quickly during the final two bars. Its mostly apparent when freewheeling down really rough trails, but weve been able to detect it when the motor is engaging and disengaging around the 25km/h cutoff on the road, and while cruising over washboard bumps on mundane fireroads. These findings are the result of an independently commissioned investigation by e*thirteen, after the brand became aware of reports that EP8 spindles were failing on bikes fitted with its ebike cranks. However, you do pay for all that refinement and integration. 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. Why don't you just make 10 be the top number and make that fully charged? You also need a special key to release the battery from the frame, which were not fans of, at least for a mountain bike anyway. Hopefully this option will open up to non-Garmin users in the future. The downside for Bosch is that its display options leave a lot to be desired. But would the noise stop us from recommending an EP8-equipped bike? The low profile EM800 display takes up minimal space next to the stem, featuring a crystal-clear screen with colour-coded graphics to easily identify which assist setting youre in. They could have gone "yeah the rattling sucks but we hope you appreciate the motor nonetheless" but instead they composed this pure poetry. Aside from the sound of the clutch, everything else in the "CONS" list can be fixed with software updates. The EP8 RS engine is physically the same as the . The svelte motor casing provides more clearance for the rear wheel and suspension components, allowing brands to build their bikes with shorter chainstays. Shimano also claims this issue is entirely isolated to non-Shimano cranks, stating it is aware of 49 reported cases of spindle failure. The current spares situation is shocking, l've been waiting six weeks for a battery lock for my E8000 equipped Kona and have been told "June" is the earliest l can expect to see it. Since working for MBUK, Alexs focus has moved to bike tech. But on the premise of further, faster, more fun, that range at full noise is not gonna outdo the range & fun I get outta my bowl of cereal and some old fashion pedal power. 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 . I had the same issue with my Yamaha but it was last winter. I have never posted a comment here on pinkbike, however this article in particular is hitting a nerve. We have shared the results with Shimano and select OEM customers. A little more overrun from the EP8 motor, and even the option to tune that attribute via the E-Tube app, would be stupendous! Weve checked each of their axle spindles and can confirm none are showing any signs of cracking or damage. Are we ignoring the fact that motor has been recalled/reworked by Shimano, and pushing all new bike deliveries by two months (at least)? Not the first time Shimano has screwed the pooch with recent launches. 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. Annoying rattle, did anyone say that to Shimano when they first introduced the freewheel? Ive only charged 2x. Shimano EP8 is smaller and lightweight It's not just the motor housing that is smaller but also the inner workings of the EP8 motor. And in terms of backup service and support, the fact that there are far more Shimano dealers than there are Specialized dealers may also be preferable for some riders. 2b - If threadlock patch is present, move on to step 3. Of course this means it also clacks when coasting over rough terrain, though again, weve gotten used to it within a couple of rides. While there were limited options to tweak the levels of the old E8000 and E7000 motors, EP8 takes it to the next level, allowing riders to alter the motors torque, acceleration and general on-trail character, resulting in a more personalised experience for dialling your e-MTB in for your riding style and terrain. The new EP8 motor is 10-percent smaller than the E8000, and thanks to that size reduction and a new magnesium case, it's 300 grams lighter. e*thirteen cranks are commonly specced on electric mountain bikes fitted with Shimano EP8 motors, by bike brands including Commencal, Marin, Orange and Orbea, among others. Climbs really well and descends like a beast. IMO we're still in the pilot phase and have a lot of room for improvement. How many instances of this problem has Shimano encountered? (7000km ridden so far). Where the EP8 motorisnt quieter than its predecessor however, is when youre not pedalling. And with brands such as Merida and Canyon making use of internal wiring through the handlebars, the whole arrangement is quite tidy. This allows bike companies to engineer a single frame, while offering cheaper models with a 504Wh battery, and high-end models with a 630Wh battery. The most prominent reports of EP8 axle failure exist on two EMTB forum threads. Rattling noise, you've seen (or heard) any of the Semenuk RAW100 videos? We hope Shimano will join us at that table soon.. All you guys "waiting" to get a ebike are blowing it..the bikes are refined trek rail no problems..going around the country slaying every trail I see chugging beer and laughing at all u haters.. believe me I guys will all be on one sooner than later. Our drive units are not tested for use with third party crank arms.. On my e8000, my impression was (now on a Trek Rail w a Bosch gen 4) that if you were at two bars, you were really at one, and if you were at one, youd better be a couple of blocks from home. In fact, we found ourselves tuning it out completely a couple of rides later. Subscribe to Cycling Plus from just 13.50 and get a Lezyne Pocket Drive Pump, worth 29! Perfect? I suppose pedal assist allows you to tackle the more fun/steep/tech climbs but to be effective it needs to be subtle too. They deemed it a warranty and the motor has failed. And compared to E8000, the new EP8 motor is considerably more powerful on the trail, whilst retaining the smooth and intuitive delivery that weve always dug about Shimanos drive units. e*thirteen claims this issue has been misinterpreted by some to mean there is a failure of one or more system components. Please, It appears you're using an old version of Internet Explorer which is, the 471.5mm rear centre on the Giant Trance X E+, that achieves the most discreet integration, the MasterMind TCU display on the new Specialized Levo. We asked Shimano and e*thirteen for comment on the spindle cracking issue. What is rattling? 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