Recent content by skoleskibe

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    Ultra power dense charger project.

    Any news anyone? Quite interesting thread !!! My Zero SR 2015 a couple of these converters, and some 115 v cut off ;-) Sent from my iPhone using Tapatalk
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    2 Speed Xiongda hubmotor

    @John in CR Just as reliable as any geared hubmotor, but with the possible use of normal size batteries when delivering tons of torque, and a reasonable speed without any heat issues. Unlike most other motors where you must choose between torque or speed, or go with humongus batteries and have...
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    Building my next pack 12S72P (with 36P modules)

    My original "Ellert" did not have a controller. It had a hydraulic operated variable resistor and a relay shorting the resistor once the speed was past 25Kmh as i remember. The motor was the thrige pmdc and the batteries was 3S100ah 12v Range was 30-40 km and topspeed app 35kmh. Used it for...
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    Building my next pack 12S72P (with 36P modules)

    Reading the headlines i was thinking about my Ellert, (original City El) which i bought some 20 years ago. What motor and controller are you using?
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    Deciding optimal bulk charging voltage.

    Yiihaa, capacity mapping, thats what i was looking for. It's close to what i've supposed for some time. After a few 4.2V/cell charges/discharges i decided to roll down to 4.1V mainly to nurse the battery. at that time using a IMax b6 charger. I did slowly notice quite a drop in performance...
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    Are batteries more expensive than petrol?

    Panasonic 18650B cells cost about 3,90€ a pop at nkon.com That equals 4.3$ That is if you live in the EU
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    Why not Panasonic 18650pf

    I'm shure Samsung cells are good, but i do think Panasonic all in all makes the highest quality cells, taking in consideration not only max Amp but also cyclelife and product tollerence.
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    Deciding optimal bulk charging voltage.

    I've got a Bestech HCX 132, and are soon to connect it to a 12s5p Panasonic 18650B pack. To get the most out of it i wonder what'll be the best bulk charging voltage. Assume the cells are quite equal in capacity and voltage, i think that the best charge voltage will be just a tad under 12...
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    Why not Panasonic 18650pf

    ,}~%#~< The 18650PF's are gone. So opted for the 18650B cells instead. Just ordred 60, so a 12S5P pack is soon to emerge.. Bought them with Utag's so its only a matter of soldering it together with a Bestech HCX D132 Wonder how many Ah i will be able to to use before the LVC @ 3V kicks...
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    KT Controller settings LCD 3

    Found the fault, just retard the connectors between controller and motor 1-2 mm when assembling, and the shifting Works a treat. Yiihaa
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    Replacing magnets for more power

    Well, I'll not recommend any specific controller, but the one i'm using is a Porter from 4qd in England. It uses a magura throttle. It's rated at 30A afaik. I've measured up to 51A from a 10000 mAh 8s multistar battery. I do have an empty housing for a rearwheel, however you'll need a longer...
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    Why not Panasonic 18650pf

    I'll keep you posted
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    Replacing magnets for more power

    I've run 36v 40A through my 24V 400W heinzmann, if done properly, ie few seconds at a time, the heinzmann is a monster motor. I've bought my motors through german eBay. It's paramount to remember not to use it as a 750 or 1000w motor all the time. Used with comon sense it's a marvelous motor...
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    Replacing magnets for more power

    I Think not. Anyhow i do have several heinzman motors, the old 24v 400w type. If you use a controller that isn't current limited, you can easily push 40-50amps, at which current the frontwheel will loose traction on anything other than asphalt.
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