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  1. Howard Hill

    Wisper 705SE problems

    Interesting. I did half suspect this (see my original post) but because it happened at various speeds above around 12mph (not just 15mph) then I thought maybe not. I’m wondering if the 15mph threshold varies with battery condition, load etc etc. In which case, that may be the answer. I would...
  2. Howard Hill

    Wisper 705SE problems

    That's good advice. I'll be sure to check as you have advised. Many thanks!
  3. Howard Hill

    Wisper 705SE problems

    I’ve just been out and waggled each cable/wire I could see and the bike is now performing to spec. My conclusion is that it took a hit of some sort during the 1.5 hour journey in the back of my car after purchase, even though I was very careful loading and unloading. Nothing was actually loose...
  4. Howard Hill

    Wisper 705SE problems

    The Wisper is a 705 SE step-through in red with 26” wheels and was bought new November 2018. It doesn’t have front suspension and the battery is horizontal on the rear rack. It has 7 speed Shimano derailleur gears and rear hub motor. I bought it second hand on Thursday (4 days ago) but only...
  5. Howard Hill

    Wisper 705SE problems

    I recently bought a red step-over Wisper 705SE. I just noticed that at around 12-13mph and above the power starts to come and go every few seconds (power drop for a fraction of a second then surge back to normal). I can feel it and I can see the power loss on the current display. At first I...