May 5, 20178 yr Just seen this article about a new Bosch eMTB mode via software update? http://ebike-mtb.com/en/emtb-mode-bosch-cx-review/ Sounds like it's a dynamic assist mode that replaces the sport mode. Not sure if they have released the update to retailers yet, has anyone got the update already? Need to take my bike in for repair on Monday after I had a little mishap, so will ask about it then.
May 5, 20178 yr Interesting. A free upgrade, according to the Bosch website will be available from 1st July. https://www.bosch-ebike.com/en/news-and-stories/news/no-trigger-the-new-emtb-mode/
May 5, 20178 yr I can't say that it interests me. Most of my riding is carried out using either eco or tour*. Occasionally, as in a few times a year, I might use sport, and as far as I can recall I have only used turbo mode once or twice in roughly 6,000 miles of off road riding. *eco when out with pedal mtb riders and tour when out on my own.
May 7, 20178 yr Hi. I own a Scott E Aspect 710 with the Bosch CX motor. How will the forthcoming software update be installed. Can I install or does the Intuvia have to go to a bike shop?
May 9, 20178 yr I got this info when I bought my bike last week. It will be available to install in the shop in August. I was told it will add a mode that will automatically change between TOUR and SPORT. Will probably get it, but I'am not sure it will make a lot of difference. I probably won't even notice it in action. P.S. Checked out the bosch site. It will actually continuously adapt the power from TOUR to TURBO depending on the user power input. Now that might be a nice mode. Because TURBO now really feels too trigger happy. Edited May 9, 20178 yr by Fish2
July 7, 20178 yr Yesterday I was told the firmware update will be available on 10. July for purion computers, and later in July for others.
July 16, 20178 yr Had the new SW installed a few days ago. eMTB mode works great. It replaces SPORT and makes TOUR and TURBO obsolete. I used to have to switch between modes all the time (in the mountains), but now I can really just leave it in eMTB.
July 16, 20178 yr Had the new SW installed a few days ago. eMTB mode works great. It replaces SPORT and makes TOUR and TURBO obsolete. I used to have to switch between modes all the time (in the mountains), but now I can really just leave it in eMTB. So does that mean there are only Off, Eco & EMTB modes?
July 16, 20178 yr No, the new modes are OFF ECO TOUR EMTB and TURBO I just don't see much use for TOUR and TURBO, since EMTB covers their power range.
July 16, 20178 yr Still of zero interest to me. I want to be in full control of power settings and battery consumption.
July 19, 20178 yr Had the new SW installed a few days ago. eMTB mode works great. It replaces SPORT and makes TOUR and TURBO obsolete. I used to have to switch between modes all the time (in the mountains), but now I can really just leave it in eMTB. Sounds similar to the Shimano E8000 trail mode. Varies assistance depending on the force applied by the rider. Makes for very natural feeling assistance without any delays. Little bar graph on the display lets you know how much assistance you are getting so you can vary your input to adjust consumption.
July 20, 20178 yr Sounds similar to the Shimano E8000 trail mode. Varies assistance depending on the force applied by the rider. Makes for very natural feeling assistance without any delays. Little bar graph on the display lets you know how much assistance you are getting so you can vary your input to adjust consumption. But that is what has always happened with the Bosch and Yamaha systems as they use torque sensing.
July 20, 20178 yr No. It is a fixed value in other modes. Like always 200% the torque you input. But it is not a fixed value in this mode. To correct myself! "Like always max 200%" Edited July 20, 20178 yr by Fish2
July 20, 20178 yr No. It is a fixed value in other modes. Like alwasy 200% the torque you input. But it is not a fixed value in this mode. The multiplier/gain factor may be fixed, but the assistance level (or power from the motor) is obviously not a fixed value as it varies with rider input even with the old existing modes.
July 20, 20178 yr The multiplier/gain factor may be fixed, but the assistance level (or power from the motor) is obviously not a fixed value as it varies with rider input even with the old existing modes. True! It also depends on cadence and speed.
July 20, 20178 yr True! It also depends on cadence and speed. Interesting. I actually think you are correct, however many here don't seem to agree, claiming that the assistance given by the motor is a simple multiplication factor of rider watts * gain factor, where the gain factor is a simple percentage set by the mode - eco, turbo=300% etc etc. ??
July 20, 20178 yr From what I have read on the bosch site, and from experience, I would say it depends on all three parameters.
July 20, 20178 yr From what I have read on the bosch site, and from experience, I would say it depends on all three parameters. If that is true, if someone wants to work out how much rider assistance is needed to get a Bosch/Yamaha driven bike up a certain gradient, then doing a simple calculation based only on the percentage assist level and ignoring cadence and speed, could very well end up with an erroneous answer. Which would explain the discrepancy we seem to often get here when someone asks about what bike/power is needed to climb steep hills. One bunch of people will do some maths and show that a Bosch/Yamaha rider needs to still put in a considerable (often unachievable!) amount of effort, while many people who actually own and ride the bikes basically say that if you stick it in max assist, then the bike can basically climb almost anything and if you keep the speed down, very little rider input is required, which doesn't seem to match up with the maths calcs. It would be good to actually get to the bottom of this, as the question of hill climbing assistance is pretty fundamental to making the right choice when buying an e-bike!
July 20, 20178 yr No. It is a fixed value in other modes. Like alwasy 200% the torque you input. But it is not a fixed value in this mode. It's not fixed to the percentage but will only go up to a that assistance level in each mode.
July 20, 20178 yr The Shimano trail mode doesn't (yet) allow the full power in that mode, it is reserved for boost. It does have an uncanny knack of sensing when and where you need some extra assistance. As said in posts above I am sure it is related to an algorithm based on cadence, wheel speed and torque sensing. When your cadence is higher and your torque applied is low you have very little assistance as the system seems to think you are doing ok. As the load builds so does the assistance but up to a much higher level than the Yamaha or Bosch. It is the large difference in assistance from virtually nothing to a big push which sets it apart from the traditional levels on existing systems and the immediacy it starts to assist as soon as you start turning the cranks with a smooth build up. The almost immediate announcement of a Bosch update following the Shimano release is why I believe it the new mode behaves in a similar way, I do not know as I have not tried it yet.
July 20, 20178 yr Which would explain the discrepancy we seem to often get here when someone asks about what bike/power is needed to climb steep hills. One bunch of people will do some maths and show that a Bosch/Yamaha rider needs to still put in a considerable (often unachievable!) amount of effort, while many people who actually own and ride the bikes basically say that if you stick it in max assist, then the bike can basically climb almost anything and if you keep the speed down, very little rider input is required, which doesn't seem to match up with the maths calcs. It would be good to actually get to the bottom of this, as the question of hill climbing assistance is pretty fundamental to making the right choice when buying an e-bike! Mid drives make use of the mechanical advantage provided by the bikes gearing giving way more power at the wheel than the motor wattage suggests it is capable of which is why they are so suitable for eMTB's. I still get surprised at the trails you can ride up that are a struggle to walk up never mind ride on a regular bike.
August 1, 20178 yr Has anyone had the Bosch Firmware update, to get the e-MTB mode instead of sport mode, on a bike that has been dongled? Does de-restrictor still work? Asking for a Friend....................
August 7, 20178 yr I had my Intuvia upgraded to the new mode yesterday whilst my Cube was in for its 1st free service at All Terrain in Saltaire. I tend to use Eco and Tour most of the time as I am not a hardcore off roader. But I did find the new eMTB mode more flexible and less snatchy than when in fixed Turbo mode. I'm not sure if there were any changes made to the algorithms in the other modes . if there has been I can't say I have noticed anything different.
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