Chris Westland

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Chris Westland last won the day on January 14

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About Chris Westland

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  1. Great to see how they pack all this in such a small package ...
  2. I am the owner of a V8 (purchased from @Jason McNeil) I love the product, and was anxiously looking to buy Inmotion's next big thing. It is truly sad to see that their US sales are now captive to Solowheel. I didn't really pay much attention to Shane Chen, since you never see his products anywhere. I'd generally like to give inventors the benefit of the doubt ... but ... I just read through Shane Chen's EUC patent (https://www.google.com/patents/US8807250) and I am truly surprised that he can defend this thing in court. Not that it's badly written, but there is so much prior art which duplicates his claims that I'm surprised he was ever granted the patent. He must have had some trouble with the USPTO, because he filed in March 2011 and only received the patent in August 2014 (3.5 years which is a long time). But check his claims: balancing issues are covered in prior art, e.g., Dean Kamen's 6,302,230 patent, and in Honda's 2011 patent (https://www.google.com/patents/US20110067936), and appear as early as Charles L. Gabriel's 1977 patent (https://www.google.com/patents/US4109741). He's been going to court, but his opponents (Airwheel and IPS) are minnows, so I think all he does is threaten them, and force them to settle. Poor IPS is a bunch of dedicated engineers, and Chen was probably their first encounter with a patent troll. Shane may have tried his bluff with Inmotion as well, and that is how he was able to get them to hand over their US business to him. Anyway, it's not good for us in the US.
  3. Wired magazine reported on this as well ...https://www.wired.com/story/segway-minipro-hack?mbid=nl_71917_p3&CNDID=43031419
  4. Cyclemeter has battery life under control. I think they mainly use cell tower triangulation with ~10sec updates of GPS position (it is for a bike, so can be slow compared with an auto GPS). I have, though, had that experience with other cycle trackers -- the GPS drains the battery quickly, and sometimes you run out of phone before you finish your trip even.
  5. Paid version of Cyclemeter. I also purchased the Darnessbot app, as well as the Graphs and VideoR addons. The UI is modest, but it is the best app out there, and by far better than any of IPS' or Inmotions apps.
  6. I like Cyclemeter (for bikes) which I have installed on my iPhone. It gives me much more information than your typical EUC app (except for internals like battery power). For internal data and logging, I use Darknessbot. Here is a screen shot from Cyclemeter:
  7. Ooppps ... got it!
  8. Hmm ... the one shown on eWheels' site looks different ... it has an LED readout, rotary switches and is black.
  9. A lot of States (including Illinois) treat an EUC as an electric bike. They don't need licensing if under 1 HP (~800W), and are restricted to the same paths. Most police don't know this, so rules can be erratic in practice.
  10. I'm fairly confident that a change in form factor for the EUC is not necessary; e.g., like adding a 2nd wheel or hand brake. Except for some mentions of hub problems, I haven't noticed on the forum any indication that mechanical failures are a problem, even though many of the EUCs used by forum members are ridden long and hard (even put away wet). This is actually pretty amazing given the forces at play inside the wheels and drives. We know a lot about electric motors from the electric bike and car, R/C vehicle and consumer electronics industry, and motors and tires don't seem to cause many accidents (correct me if I'm wrong). Electronics, batteries and software are inherently easier to 'upgrade', and that to me is good news for the EUC in general.
  11. I think many of Gotway's problems arise from increasing the power demands without corresponding major upgrades in components and systems. Power demands rise by the square of velocity and cube of aerodynamic drag, and EUC's forward and backward stabilization is achieved entirely through the motor (compare to bikes, GausWheel, etc) and thus which conceptually could demand infinite torque spikes. The torque and power that make Gotway wheels attractive demands a similar scale up of components, which I think for price reasons they are not providing. You have similar problems with supercars ... if you create a Bugatti Chiron, you need entirely new parts for the power train to handle the 1500+ HP; otherwise you have a track/race car that might be good for only one race.
  12. Interesting discussion, but IMO misguided, resulting in potentially over-engineered (expensive, failure-prone) solutions. I think you need first to identify the "why". Riders who have had failures and done post-mortems (@esaj , @Marty Backe, @Jason McNeil@Rehab1,etc... forgive me if I've forgotten anyone) provide a list of insights on what needs fixing. In general, it seems, sudden fluctuations or loss of power to the motor (FET failure, wiring melt, brown-out, etc) are behind most crashes. EUC wheels would benefit from {power reserve (think super-capacitor) + low-pass filter + graceful degradation} systems before other engineering. Segways use multiple redundant systems (expensive) to achieve safety. I'm assuming the manufacturers mostly understand this, though maybe they aren't separately engineering such subsystems, and they have to engineer to a price point.
  13. +1 on the helmet ... not a matter of "if" but a matter of "when" you will need it ...
  14. Haha ... try that method with an EUC
  15. Welcome to the club Allen! Learning to ride? Well ... it's like getting to Carnegie Hall ... practice practice practice :-)