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  1. RobF

    2018 year of the 21700

    These new cells were looking promising, but lower density hardly looks like a step forward. Greater reliability and lower manufacturing cost is a benefit, but a significant increase in pack capacity in relation to pack weight and volume - which is what's needed - still looks a long way off.
  2. RobF

    Haibike sDuro FullNine 29 2016 Yamaha 400Wh eMTB Frame 55cm eBike * SOLD/THREAD CLOSED *

    A different front wheel and 'upgraded' forks. I expect the tree it hit came off better.
  3. RobF

    Haibike return policy

    A dropper sear post is not a sizing option, it is a trail riding option.
  4. RobF

    Inner tubes

    Schrader is less likely to clog than Presta.
  5. RobF

    Where do I start?

    The Bergamont will have the gears in the rear hub, probably eight or 11. Advantage is almost no maintenance and the chain lasts longer because it's always in perfect alignment. Disadvantage is extra weight and a tiny bit of extra friction which is not so important on an ebike. Gear range can...
  6. RobF

    Greenway Cross City

    You may be able to straighten it with palm pressure.
  7. RobF

    Bafang Max Drive bikes

    A 44/11 needs about 90rpm for 30mph. I could only manage that for a short burst, but plenty of roadies could spin it continuously.
  8. RobF

    Greenway Cross City

    There may be a small element of that, but I think the torque sensor effect is over estimated. The latest Performance/CX Bosch motors don't require a lot of effort on a 15% asphalt hill in sport or turbo. It's all subjective, of course, but in turbo I reckon I'm not doing a great deal more than...
  9. RobF

    Whyte Coniston (2016 model)

    Resting your foot on the pedal at rest can cause an error message on crank drive bikes. I believe that's because the torque sensor overheats. It's not something you would routinely need to do, but could happen while waiting at traffic lights - foot on pedal/brake lightly on in preparation for...
  10. RobF

    Hello. New to ebikes.

    There's still some hostility from traditional cyclists towards ebikes. Mostly borne out of prejudice and ignorance, those that dislike them have rarely tried a modern one. I also don't get their problem because it's not like passive smoking - if you ride an ebike it doesn't have any adverse...
  11. RobF

    And...

    Worse way you could change to modern LED rechargeable lights. The beam is much brighter and better all round than filament bulbs, and the run time can be several hours. A bit of a faff having to remember to charge the lights. Some distance/overnight cyclists prefer lights with removable AA or...
  12. RobF

    Juicy Bike problem...

    Regrettably, I suspect the seller knew very well what the problem was. At least you got decent support from Juicy. Sorting it could have been a lot more complicated on a 2010 'no name' Chinese ebike.
  13. RobF

    Riese Muller 1000 watt battery option

    Might be an expensive way to do it, given that you would need a second battery cup, mount, and locking clasp, as well as a second battery. With the best will in the world, I wouldn't trust any dealer to find the correct part of the internal loom and wire it correctly. On bike charging could...
  14. RobF

    Greenway Cross City

    That much sag after only 11 miles looks odd to me. My only lengthy experience is with Bosch batteries, which hardly sag at all even when close to empty. I suppose I should say 'Bosch system' as it may be the controller/software on Bosch bikes which all but eliminates sag. Whatever, a Bosch...
  15. RobF

    Riese Muller 1000 watt battery option

    As said, there is no user control of the twin battery system, it draws from each battery alternately. Makes sense, as it's better for batteries not to be left fully charged for any longer than necessary. Battery range comes up as the combined figure on the display, as do the blobs on the...
  16. RobF

    Riese & Muller Charger NuVinci Electric Bike?

    An enclosed chain bike is another option - enclosed chains hardly wear at all so will last many years. Gazelle make a couple of ebikes with enclosed chains, typically Dutch who regard the bicycle as a tool, not a fashion statement. Some Riese and Muller bikes have the lightweight Hebie...
  17. RobF

    NuVinci 360 gearing

    Worth giving a belt a try. You chain seems to get very dirty, so it would be worth keeping the internal surface of the belt clean. As I mentioned earlier, bits of grit mashed between the sprocket and the belt can break the belt.
  18. RobF

    New Cyclamatic

    Rose supply their bikes to the customer in the same way. It also appears to obviate the need for loads of plastic foam and bubble wrap. I've seen Cannondale bikes arrive at my local bike shop, knocked down to make the box as small as possible. But that does make for a cable tie and packaging...
  19. RobF

    New Cyclamatic

    Take mountain bikes as an example. It's accepted they were invented/first designed by, I think. Gary Fisher in the 1980s. He made them, they did well, other makers had a dabble, more bike retailers took them and so the market grew. Manufacture is mostly dominated by the big companies, but...
  20. RobF

    New Cyclamatic

    All of which are large companies. The point is that bicycle retailers will remain small, or at least local in the case of chains such as Halfords or Evans.