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Recent content by bitcom77

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    How Lithium Ion Batteries Fail

    http://phys.org/news/2015-04-tracking-lithium-ion-batteries-real-time-video.html cool job to have to blow up batteries
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    New NASA Power Inverter Funding

    yeah I know, I was there actually most folks that attended now regret even bringing it up since everybody and their brother now refers to it, when in reality it was only brought up briefly and dismissed until someone can actually show it working as a power source not just very complicated...
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    New NASA Power Inverter Funding

    http://nspires.nasaprs.com/external/viewrepositorydocument/cmdocumentid=455490/solicitationId=%7BDAFEDDF9-B1D7-B12A-377C-EB0BECAD654E%7D/viewSolicitationDocument=1/ROA-2015%20NRA%20Amendment%20No.%203.pdf TL;DR: they want someone to develop a 1000VDC with >1000A (aka 1MW) at 12(17) kw/kg with >...
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    Giant dh team, with custom build frame

    interesting I have tried various stands, but they either won't fit at all or easily break from the weight if I see this right you used on L bracket and bolted it to the swing arm just behind the rear shock
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    Adaptto Mini-E/Max-E Owner's Thread

    just thought I'd post this here I've been having trouble with my setup (miniE with crown TC100) loosing power and stalling especially on hills at first I thought this was due to some wiring issues or such after I ruled that out I've been in touch with support (Oleg) after quite a bit of testing...
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    Giant DH Team

    Thanks! I do like the blue I set the LVC to 63V which at 18s should be a conservative 3.5V in the BMS I am using a custom cell profile setting the low end to 3.0V and I also modified it to start balancing at 4.15V I tried watching the voltage drop while accelerating hard, but I am not getting...
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    Giant DH Team

    thanks for the info maxing out the current settings did help...some still getting those weird cut outs where the battery current will drop to 20A or close to 0 I'll have to check out the start feature settings I've tried the autodetect more times than I'm willing to admit :) it does seem to...
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    Giant DH Team

    Alright more testing I did figure out the thermistor in the motor: bad pin in the connector that keeps disconnecting it however, still getting cut outs while riding when spinning under no load everything seems to be fine my current best guess is a bad connection that under heavy vibration cuts...
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    Adaptto Mini-E/Max-E Owner's Thread

    yeah I've been using those most stuff from them is a bit more expensive but worth it in terms of quality
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    Adaptto Mini-E/Max-E Owner's Thread

    so I've played around with the settings and redone the auto detect quite a few times I am finally getting full 65A current off the line the first time however, then under wot throttle the current seems to jump around and sometimes go as low as 5A under no load I easily get 75mph with only like...
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    Adaptto Mini-E/Max-E Owner's Thread

    ah well that would make sense why on an uphill the battery current dropped so much one more thing, I was charging at 36V limited to 38A (to not overload my house breakers) using the 70A coil and the capacitors got extremely hot I'm not sure if it can actually take 70A at that voltage. So I...
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    Giant DH Team

    Alright, first extended test ride, a little disappointed at the current level of performance. It seems quieter but less powerful than the Grinfineon 40A controller, so still some things to work out I put my questions in the Adaptto owner's thread...
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    Adaptto Mini-E/Max-E Owner's Thread

    alright got some questions after first ~1 hour long test ride I am running 18s 24 Ah battery, miniE with RC9d firmware, TC100 I noticed the following things I'd like to work out: - when charging is almost done, it seems to go into a cycle of -> charge current too low -> detecting charger ->...
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    Qulbix Raptor ebike + frame kit

    hmm that's a good thought might have to try that too
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    Qulbix Raptor ebike + frame kit

    yeah I couldn't fit the Zee derailleur with my crown motor just too much interference from that arm even with extra spacers
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