Power in Flux

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Type: Posts; User: ldopa_chicago

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  1. You make some very valid points, Spoonman. ...

    You make some very valid points, Spoonman.

    Like you say, a leaf pack will high a high thermal mass. We can safely assume that there will be a temperature gradient across the pack. Ideally, I'm not...
  2. Also, that is really cool and a great idea....

    Also, that is really cool and a great idea. Thanks for sharing.
  3. I can't agree with this part but otherwise agree...

    I can't agree with this part but otherwise agree with your post. As part of my job I design charger systems for lithium batteries, albeit much small ones. Temperature is one of the most important...
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    This may not work for you, but I have a...

    This may not work for you, but I have a motocross-style helmet- it's full face but I have to wear goggles. I have not had issues with fogging even at cold temps but I haven't ridden all winter (yet)....
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    This is really cool. More pics of the bike please!

    This is really cool. More pics of the bike please!
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    I can't get over that swingarm geometry. I'm...

    I can't get over that swingarm geometry. I'm pretty sure you do not want your wheelbase changing when your suspension loads.
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    I've thought a lot about this topic. I too have...

    I've thought a lot about this topic. I too have considered the off-the-shelf hall TPS sensor "potbox" as an alternative to the Domino/Magura. I think it's a neat idea for conversions though it does...
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    They're going after Taiwan's Gogoro. Taiwan is a...

    They're going after Taiwan's Gogoro. Taiwan is a really interesting market in that it has the highest per-capita scooter ownership in the world. All 4 stroke. There is some adoption of Chinese...
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    The ME1507 is rated at 17kW continuous. Most of...

    The ME1507 is rated at 17kW continuous. Most of the Motoenergy stuff I've seen has a peak power of about 3x the continuous rating. Keeping this in mind, a peak power of 54kW sounds in the ballpark. I...
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    Ok, some progress, some setbacks. Since I got...

    Ok, some progress, some setbacks.
    Since I got the motor spinning, I disassembled everything, moved it out to the garage (it was inside my apartment for comfortable winter wrenching), reassembled it,...
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    I started a separate thread with details specific...

    I started a separate thread with details specific to that if you want to go into it: http://elmoto.net/showthread.php?t=4433

    In short, the sin/cos sensor that I spec'd is 1 electrical cycle per...
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    Ok, controller issue is resolved! I got it...

    Ok, controller issue is resolved! I got it running yesterday and it's very exciting. I've been working on it inside my apartment so now it's time to disassemble it, move it to my garage, reassemble,...
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    Ok, resolved! It was partially my foolishness...

    Ok, resolved!

    It was partially my foolishness and partially the issue with the electrical differences between the sensor I'm using and the sensor Kelly tested with. Problem #1: despite know...
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    Congrats, that's awesome!

    Congrats, that's awesome!
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    No dice. Kelly's support continues to be unable...

    No dice. Kelly's support continues to be unable to resolve the issue. I think this controller would be a fine choice for someone using off the shelf parts, but maybe not for me.

    I'm strongly...
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    I may have just figured it out. The sensor that...

    I may have just figured it out. The sensor that Kelly did development with is a 1 electrical cycle/rotation part. My ADI part is 2 cycles/rotation. This would definitely mess up the auto cal. I...
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    So Kelly has asked me to purchase and try the...

    So Kelly has asked me to purchase and try the sine/cosine sensor that they use in the Motenergy ME1114/1115. Though they don't state anywhere that one must use this specific sensor, I don't think...
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    A little update. I tried it at 24V, also no...

    A little update. I tried it at 24V, also no effect.

    I realized that in the monitor window, the Hall A/ Hall B fields (which correspond to sine and cosine on my controller) were not changing with...
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    My motor has a sin/cosine sensor (the difference...

    My motor has a sin/cosine sensor (the difference between the I and IPS model controllers). I've tried swapping the position of the sine and cosine sensors to no avail. There are so many permutations...
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    No, I haven't swapped phase wires yet, but that's...

    No, I haven't swapped phase wires yet, but that's definitely worth trying. Theoretically it shouldn't matter but...I have nothing to lose!
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    Ha, thanks, I've watched your video twice now...

    Ha, thanks, I've watched your video twice now looking for clues/differences. One is obviously the I vs IPS distinction but beyond that I'm doing what you're doing and my motor behaves just like yours...
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    When I power on/off, it comes back showing 170...

    When I power on/off, it comes back showing 170 and starts trying to identify all over again. It will do this ad infinitum unless I manually write 85 before I reboot.

    I'm using the PC version.
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    Yes, I write 170, reset the controller, it does...

    Yes, I write 170, reset the controller, it does its little routine (appears to be stepping through a full 6 commutations)...and then nothing. ID angle doesn't go to 85, there is no information on the...
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    It will twitch and/or whine (I watch the current...

    It will twitch and/or whine (I watch the current to make sure it's not doing anything bad), but not spin. I was able to get it to spin if I turn the field drive off (rotor un-magnetized), but I think...
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    Ok, I'm a bit frustrated. Everything is wired...

    Ok, I'm a bit frustrated.

    Everything is wired up an ready but I'm having trouble with the Kelly "auto identify" function. I started a thread on it in the "controller" section, but basically the...
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