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    My lifepo4 16 cell 48v battery doesn't get charged

    I'll dismantle the battery and show actual pictures but it will be during the weekend. Stay tuned !
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    My lifepo4 16 cell 48v battery doesn't get charged

    This is from GM website: http://www.goldenmotor.ca/product_images/d/263/041__83408_zoom.JPG http://goldenmotor.com/SMF/index.php?topic=4260.0 The one I have should be the same...
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    My lifepo4 16 cell 48v battery doesn't get charged

    Tell me about the plug issue ... :D I've been there so many times that I replaced it with a heavy duty connector. New fact that might shed some light : I found out why yesterday I wasn't able to charge the battery with the trick of applying load on the battery: Yesterday, for the first time in...
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    My lifepo4 16 cell 48v battery doesn't get charged

    Hi All, 2 years ago I bought from GM the lifepo4 16 cell 48v battery that looks like this one: http://goldenmotor.com/SMF/index.php?topic=4260.0 It served me for 2 years running for about 16,000km. Power, efficiency and charging speed are as good as when the battery was new. Starting from about...
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    Golden motor Magic Pie I : Recent noise at low speed

    Hi All, I have the Golden Motor Magic Pie I for 2 years together with an external 1500w ecrazyman controller. The 2 are a real Gem for me. Recently I hear these strange noises coming from the motor at very low speeds but not right from speed 0km. It starts from 5km/h and ends at 10km/h. The...
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    Magic Pie 1500W motor : Do I face the risk of radiation ?

    It's also a matter of altitude. I remember the good old days I spent in the US living in New Mexico (Hector Salamanca : "Ding Ding Ding !!!) ... Albuquerque has a combination of high altitude (thin layer of atmosphere filtering the sun) + Turbulent air (clear of dust = again less filters) +...
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    Magic Pie 1500W motor : Do I face the risk of radiation ?

    OK. I Got it. So the reason my balls glow in florescent green is probably due to what they put in these colorful cereals :-)
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    Magic Pie 1500W motor : Do I face the risk of radiation ?

    I would appreciate informative answers rather than answers which assume I'm a 90 year old granny ... Cigarets were not considered a risk a few decades ago and so were transformers installed in front of your window. Please enlighten me with explanations and scientific facts rather then teaching...
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    Magic Pie 1500W motor : Do I face the risk of radiation ?

    The damage caused by long usage of cellular phones is a known fact. Especially among kids. There is also an issue with vacuum cleaners : http://www.name-n-shame.co.uk/airborne_radiation.php I admit that wasn't able to find any article that would claim the same thing on e bike motors and I was...
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    Magic Pie 1500W motor : Do I face the risk of radiation ?

    Is the fact that ebike motors produce low radiation related to their DC properties ? AFAIK the output of the controller is not DC... Another important factor is the battery. The media is full of warnings to stay away from cell phones when they are being charged. Isn't that 1000 times more...
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    Magic Pie 1500W motor : Do I face the risk of radiation ?

    Thanks Dave for the good news. BTW, I use 50 SPF lotion :wink:
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    Magic Pie 1500W motor : Do I face the risk of radiation ?

    Hi All, I'm the proud owner of a Magic Pie electric motor tuned to 1500W. I paired it with the ecrazy controller. Both are a dream combination as far as performance and reliability. I'm still left with the concern that I'm sitting 10" above a 1500w source of radiation. Do I risk cancer ? Were...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    Now throttle regen problem is also resolved. I changed slip charge mode to 1 and now regen is totally disabled. So the attached setting is the final one. Thanks for your help, neptronix. By the way... I don't need to mention what a great product the ecrazyman controller is. Everybody knows...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    I increased current setting to 26A and it's a rocket ! Power problem resolved ! I'm doing some experiments with regen settings. Stay tuned !
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    These are the settings I'm using (attached screenshot) Do you notice any regen current limit ?
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    "regen is like that. It's either ON or OFF. you have a sensor in your brake line that is basically a switch." LOL !!! I try to be more clear :D With the old internal GM controller When regen was activated, by using one of the brakes, I was getting a long constant motor brake (...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    When I say segmented braking I mean "on and off" braking. Not fluent braking.
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    The bike is running fine. The motor is quiet but I still have 3 concerns: 1. The old Golden Motor internal controller seemed to deliver more power. Could it be that it was set to more than the values I set the ecrazyman controller (rated=22A; phase=56A) ? 2. I have regen enabled in...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    Now that the motor is done I assembled everything back and went on to connect the ecrazyman controller. This is how the wires are connected... Power cables: Blue to Blue. Green to Yellow. Yellow to Green. Sensor cables: Blue to Blue. Green to Yellow. Yellow to Green. Red to Red. Black to...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    After sanding the surface where the rough epoxy putty mounts (Be careful not to sand the sensors !) I went and soldered all the wires to the sensors. I made sure all motor measurements are correct: Resistance between the 3 power cables : Green to blue : 0.3 ohm. Green to yellow : 0.3 ohm. Blue...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    The next step is to fix the sensors to the notches with high quality epoxy putty. The sensors must not be welded to the wires yet. Doing that will cause the sensors to move from a straight position. I learned it the hard way :(
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    Finally I saw light in the darkness...My ebike is running ! Here is the process I had to go through + pictures: Since the SS41 are slightly bigger than the crap I had on my GM motor I used tungsten carbide burr to widen the notches so the SS41 can fot into them. In this picture you can see the...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    I got the Honeywell SS41 hall sensors. Thanks Lyen. I have some concerns regarding my motor though: 1. The sensors I got from Lyen are original Honywell SS41 sensors labeled "S41" The 3 sensors I have on my motor (only one is defected) are labeled "40P 822". Not an original ? 2. The...
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    Here is closeup of the notch for the sensor. David from GM got back to me today and told me that in addition to replacing the defected sensor I will also need to configure my external controller for a phase of 120 degrees.
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    SOS! e-crazyman controller vs. Golden Motor Magic pie motor

    I ordered 3 of the ss41. I'll have them all replaced. Shipping from the US will take about 10 days to arrive and once they arrive I'll report my progress.
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