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Recent content by jyl

  1. J

    Heart Aliments- Result of Genetics, Doping or over exercise?

    The incidence of congenital heart defects is not that low. Around 8 per 1,000 live births. Most of these don't require treatment, many are undiagnosed. But professional endurance athletes stress their hearts (and the rest of their bodies) to an incredible degree. Their physical condition is...
  2. J

    Did Katusha buy Free Doping Ticket 2015 ?

    Wonder if OGE withdrew from MPCC because they know something (a positive?) is coming up.
  3. J

    Motorized bikes: technical & theoretical

    Re: Re: Don't get emotional. This is your design, so it is up to you to show that it will work. Either by correct calculation, or by experiment. I did the calculation for you. This is equivalent to a pulley problem. Your rim weight will try to pull the bike up the incline with the force...
  4. J

    Motorized bikes: technical & theoretical

    Re: Is your drive merely propelling a 4 kg wheel? Very little power required. Or a 85 kg bike and rider? Far more power required, which your drive can't provide. I encourage you to fasten a 2 kg weight to your wheel (just tie some lead weights, or even a couple of hammers, to some spokes)...
  5. J

    Motorized bikes: technical & theoretical

    Re: Re: The weight stays in a constant position relative to the bike. If the bike is moving at a constant speed, the weight is also moving at a constant speed. Zero acceleration, therefore the kinetic energy is constant. The drive does not "add" more kinetic energy every second. The drive...
  6. J

    Motorized bikes: technical & theoretical

    Re: Re: See emphasis added to your quote, above: "flat surface". Yes, on a flat surface (and no rolling resistance and no air resistance) this will work. But this 2 kg weight attached to the rim will not propel your bike plus you up a grade steeper than about 1.3 degrees. Gravity acting...
  7. J

    Motorized bikes: technical & theoretical

    Re: Why would the mass (sliding piston) "keep itself" at 3 o'clock? Instead of traveling around the rim?. The system is going to take the path of least resistance. Since it will be easier to lift a 2 kg piston against gravity from 3 oclock to 12 oclock than to accelerate 80 kg of rider up a...
  8. J

    Motorized bikes: technical & theoretical

    Re: Re: Here is a picture showing the seatstays of that bike (2016 Madone). http://pelotonmagazine.com/wp-content/uploads/2015/07/MadoneHero.jpg Eyeballing it, I'd say the seatstay where it crosses the rim is about 10-15 mm thick (right to left dimension), about 25 mm wide (front to back...
  9. J

    Motor doping thread

    Re: Re: $11MM annual revenue, maybe $5MM annual operating profit (there is cost of goods and opex) and say $3MM after tax income. From a business that might exist only for a few years, until the sport learns of your product and figures out how to detect it, which can be done easily enough...
  10. J

    Motor doping thread

    The argument that "no one is checking for motor doping, so the motors don't actually have to be undetectable" makes no sense. If you actually think that are no bike checks (the tablets are dummies, xray machines not plugged in, everyone just pretends to remove bottom brackets, all the motor...
  11. J

    Motor doping thread

    Re: Re: There is not enough volume in the seat stays of a typical race bike, that you see in today's peloton, to fit much of anything. You have to work with the chain stays, which are pretty big. But still doesn't get you enough angular coverage. If we start seeing pros ride on bikes with...
  12. J

    Motor doping thread

    Re: How much profit has been made by Vivax, Typhoon, and all the makers of motor doping systems?. I'd be surprised if collectively they've made more than a million dollars profit in the entire history of the "industry". Where do you see the "very good yield" on investing "hundreds of...
  13. J

    Motor doping thread

    Sniper, an electromagnetic rim drive that looks just like a regular pro race bike would not produce an "order of magnitude" less power than the claimed 500 watts of this design. It would be a lot, lot less. The e-bike you showed has about 90 degrees angular coverage of the rim by the...
  14. J

    Motor doping thread

    Re: Re: To the contrary. This prototype e-bike supports what I've been telling you. Let's deal with the Gazzetta article first. "We asked Leschick what he thought of the previous electromagnetic wheel doping claims, to which he responded . . . It wouldn't work." Turning to this prototype...
  15. J

    Motor doping thread

    Re: Re: See viewtopic.php?p=1863229#p1863229
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