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  1. tedcs

    Question about transistors...

    :lol: Someone should comment on this remark :!:
  2. tedcs

    modifying a 7 speed freewheel to work as a single speed

    The quick and dirty answer is yes. The better answer is: http://sheldonbrown.com/singlespeed.html Freewheels are not all similarly constructed, some are easy to disassemble, most require a specific tool. Single speed freewheels are not terribly expensive, but compatibility must be considered...
  3. tedcs

    crystalyte hs3540 freewheel thread shear

    Always mark the cover position first. A wood chisel, or knife, may help loosen the cover. Don't use excessive force; working around the seam, the cover will eventually pop loose.
  4. tedcs

    hs3540 assembly

    I just put the wheel/rotor on a 5 gallon bucket, hold the stator by the axle and lower it carefully until it is pulled out of my hands. This makes a bang. If you marked the covers' position on the rotor prior to disassembly it may save you much effort to determine the best orientation. One...
  5. tedcs

    Please educate me on controller design.

    I've been told that a vacuum tube is a FET with a light on, plus signal processing. Based on the substantial demand, they are useful. My supposition is that, with sufficiently thorough analysis, the transfer function of a vacuum tube could be duplicated exactly with other types of circuitry...
  6. tedcs

    Controller in a water bottle cage? Could it happen?

    Yes, it does not matter if it's ugly, or fugly, 'cuz I'm gonna have a good time regardless. It's not that the aesthetic is of no consequence, but that is not my forte. It will be wonderful to have a controller of such exquisite beauty that it causes all who gaze on it to swoon as dopamine swirls...
  7. tedcs

    Controller in a water bottle cage? Could it happen?

    I agree with everything. I think y'all just invented Yin and Yang, although I don't remember which is which. I'm not unaffected by appearance but, I'm not effected by it either.
  8. tedcs

    Please educate me on controller design.

    A motor controller, on an e-bike, is a thee phase buck converter in a tornado, during an earthquake, perhaps. I am poking around in controllers a bit, lurking regularly and Googling excessively. It is taking some time to get up to speed. I've not encountered even one 12AX7 or 25L6. :shock: It's...
  9. tedcs

    Controllers have electrical charge ?

    If you want some real excitement then, open up a microwave oven!
  10. tedcs

    US gov't sets stiff tariffs on China solar panels

    One might wonder if the US gov't is subsidizing the China gov't's subsidy of solar panels.
  11. tedcs

    Transfer solar heat into your house without electricity

    :arrow: OT & more OT: Not to worry! Ignorance is good, everyone should have some. The problem lies in not knowing how much one has. I agree with spinningmagnets — http://www.builditsolar.com is a cool site. It can be instructive, thought provoking, and entertaining. With respect to Pnom Penh...
  12. tedcs

    flying bike

    The capacity for discerning the essential truth, in fact, is as rare among men as it is common among crows, bullfrogs and mackerel. The man who shows it is a man of quite extraordinary quality— perhaps even, a man downright diseased. Exhibit a new truth of any natural plausibility before the...
  13. tedcs

    Rise of the 'Supertrees'

    Perhaps you're thinking of the international bankers?
  14. tedcs

    disconnecting controller for charging Y/N

    I observe that my 'xlyte' 72V40A controller draws about 16mA when connected to the batteries and not turned on. When switched on and stopped, the current is about 56mA. This gives a power dissipation of approximately 1 watt and 4 watts, respectively. I don't worry too much about a watt here and...
  15. tedcs

    Who Will you vote for?

    I've vote for whomever will get rid of the FED. Nothing else is of any consequence.
  16. tedcs

    Transfer solar heat into your house without electricity

    This type of collector is known as a "Trombe Wall." ... coming to a hemisphere near you.
  17. tedcs

    Controller in a water bottle cage? Could it happen?

    I have a wealth of ignorance. Although I've never seen a "controller in a can," I ain't seen much. Certainly, it could be done. As you mentioned, some of the controllers available are small enough to stuff in a can. Yes, heat dissipation would require some thought. I can't think of any technical...
  18. tedcs

    Specialized Big Hit FSR with midmount

    Wow My braincell exploded :!:
  19. tedcs

    Driving FET Gate, is 2.5" too far from the driver?

    I'm working toward getting a clue - the images are helpful! Thanx
  20. tedcs

    Motorcyclist clocked at 193 mph on NY highway - in the rain!

    Knowledge of the fundamentals of law is vanishingly uncommon. Indignation = FAIL
  21. tedcs

    Have You Ever Accidentally Shorted a Battery ?

    If the number of events were considered, I could push the ratio higher than 14:1! BTW: Steel reinforcing bars can be used if jumper cables are unavailable.
  22. tedcs

    Bulging caps causing poor performance with EB312?

    NeilP, I've given little thought to altering the firmware. Presently, the issue is improper caps on the battery voltage buss. 63 volt caps with 80 volts across them is NOT what I call 'headroom.' WTF?!? That the input caps split and spewed is no surprise. I'm quite used to undertaking too...
  23. tedcs

    whats your favorite beer

    I favor Magister Pilsen Imperial 9º Magister Fabrica de Cervezas Calle Príncipe 18 Madrid, Spain
  24. tedcs

    Have You Ever Accidentally Shorted a Battery ?

    I dropped a wrench in a live 480 volt circuit breaker panel once. The result was spectacular and I think it would count.
  25. tedcs

    Gender?

    I find the question: "Gender?" to be ambiguous. So far as my e-bike is concerned, it's too early to tell.
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