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    Hub motors - Why such bad power to weight

    Having a fairly basic understanding of the workings of the brushless DC hub motor I'm curious as to why all currently available Hub motors have poor power to weight when compared to mid drive motors (Emrax, Zero, motenergy etc) ?? Is it simply the fact that development has not occurred in the...
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    Street tracker build

    About two years from when the idea of building an electric flat tracker style street bike first started to now and I finally having a rolling bike to show. Frame and swingarm has been designed from ground up and will suit either an Emrax 228 or zero 75-7 motor and around 5 kWh of lipo.
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    Power for 100km/h elmoto speed

    Hi Guys, I'm chasing some real world data of the power (kw) output required for cruising at around 100km/h on a elmoto. I understand this figure is going to be somewhat broad with different size bikes, aerodynamics, motor efficiency etc but some figures including bike type and setup etc would...
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    Emrax motor with Emsiso Edrive

    Hi Guys, I'm currently looking into motor selection, and have been for some time, for a light weight (<100kg) short range street tracker style bike build. Wanting to stick with Air cooled to keep things simple (simpler is prob the better word) the Motenergy ME1115 was at the top of my list...
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    On One Inbred Custom

    Hi, Thought I'd share my latest Ebike build Specs: On One Inbred Frame MAC motor EM3 Triangle pack 50v 12.3ah 30A Controller Custom Single speed freewheel to motor adapter Custom Battery/Controller Box and frame clamps Rockshox TK30 forks 24" Rims/tyres Cheers Toby
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    BMS Over charge detection voltage ICR18650-22P

    Hi Guys, I'm currently buying/sourcing parts for a 18s3p Samsung ICR18650-22P pack build and would like to know what Over charge detection voltage to have set on the BMS for this particular cell? I have found several chinese suppliers for an 18s BMS and the data sheets have the Over charge...
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    Testing Xlyte HS2440 Motor Wiring

    Having no luck in working out the issue with a crystalyte HS2440 motor (See Thread http://endless-sphere.com/forums/viewtopic.php?f=30&t=39530) I have since purchased a Bafang BPM 350w motor to use instead and although I have had some issues with the Bafang motor (Internal slipping) when the...
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    Bafang BPM Motor internal slipping

    Hi Guys, After receiving a dud crystalyte H series motor from crystalyte I decided to go back to the geared option as I have had no issues with my BMC and like the light weight and small size of the geared motors. Not requiring a high power output I decided to go for a Bafang BPM front motor...
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    Crystalyte HS2440 Disappointing performance/noise

    Hi Guys, Recently fitted a HS2440 to a project bike. The motor is laced into a 20" rim/tyre and I'm running a 36V headway pack. I have tested the motor using two different controllers: crystallite sensor less 25 Amp and an infineon 35amp 12 FET(motor has halls fitted). The performance is very...
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