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  1. G

    9C RH205 dented rear axle

    Sellers have a legal warranty of 1 year at least in France. Where did you get the motor from? Is it power-ebike? The 28amp controller make me thing it is the case. I have it since 1.5 years on a 8x8 rh205 that now is taking roughly 40 amp without problem, it's a real axle defect. I am really...
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    Alternative motor shaft design and dropouts concept

    Why not using traditional motorbike-like fixture. It is working for big power since years, you can set this by yourself and it is rock solid. You set first right side to adjust chain tension, and then you go left side to manage wheel alignment.
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    Voltbike Yukon

    Don't underrate the fork too much. If you take a suspended one, it has to be soft and must have to be correctly setup in order you to get full benefit. A too cheap one will have no hydraulic, just a spring and it will never be good. For normal dropout, you have basoc rockshox at 150-220$ that...
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    BMSBattery Torque sensor

    And with bms, they often ask for post payment ... it arrived me twice, the eason why I will not order them anymore...
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    Am I the only one that can't stop modifying my ebike?

    I had something pretty close with mine, with almost 8.5 kg at the rear rack, bt pretty disturbing when road are not clean... £ I felt like running a motorbike with a passenger... I am on the move to split the battery and put it in bags on front carrier, very near the center of the wheel... Will...
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    CA3 - AutoPAS with RPM-Proportional Assist

    I have sent some question to teklektik about this some days ago, he wrotes a the (un)official user guide you wrote. Actually you can base on the provided tables that are based on a max 3x power assist when going from 55rpm (x1) to 90rpm (3x). I asked him because where I live, I have some steep...
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    RC battery 'C' rating

    C rating indicated how many ampere you can pull out a battery. It"s a multiplicator or the capacity in Ah. Ex: a lipo (whatever s) of 8ah that has a C rating of 10 can be pulled out (10x8=)80 amperes. Check if the C rating is for continous or peak discharge.
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    500w BionX OFF ROAD

    If you can test and check the rear wheel weight but the website advertises 8.8kg for the system which is good, but I think we can do better figures for rear wheel setup... Bionx has 48V / 11.6 Ah and 500w rear wheel , 8.8kg and 2500$ the conversion kit. For roughly 2000$ you can have a eZee kit...
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    Stealth FUTR owners builds and pics

    Just for my curiosity, which kind of multistar do you get to have 20s 32ah? you get 2//(2x6s+2x4s packs in serie)?
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    500w BionX OFF ROAD

    Not surprising. My wife has a bosch 250W assit bike, and running with her and my bike (that has a CA v2 power meter), I can tell the bosch motor push more than 500W uphill on turbo mode. So it's not surprising at all that a "commercial" assit system push more than advertized.
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    Strong motor with pedal assist

    Waiting for the guru to answer, a good start would be infineon controller, torque sensor and Cycle analyst V3, I would say that it's the minimal for having pedal assist to work. A simple pedal assist system will not manage so much power; actually infineon controller send full power as soon as...
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    Diodes for series-parallel Batteries

    I am "upping" this interesting subject because I am going to put 2 36V lifepo4 batteries in série and am questioning about charging them as a pack of 72V. In all the written things here, nobody did take into account that this is the controller that will have to manage the flyback effect, and...
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    charging to batteries in Serie

    All, I am on the point to share my 20s lifepo4 battery into 2 12S batteries (I add 4 cells), each with BMS to balance it. my order to the cell supplier was with a 43.8V new charger as my current one cannot go under 50V. But I think I could spare to buy a new one by charging the 2 batteries in...
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    Questions - when adding CA3 to "programmed" Lyen Controller

    You may need to adjust Rshunt value to the controller, otherwise amp value will not be accurate.
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    Recommendation for a BMS

    A 10s battery must have a 10s bms in the appropriate chemistry...
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    Recommendation for a BMS

    I just know that there are resistive BMS, that bleed cells that are over the max voltage, once whole battery voltage goes over a given voltage. And there are capacitive ones, that just pump up the energy from over-charged cells, and probably distribute to lower charged ones. But all seems to...
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    Full susp. conversion, cur/volt controlled throttle!

    Current controlled throttle is really great. Not only you can more easily measure "with your wrist" how much power you put into the rear wheel, but also you can safely use the full potential of your battery. I have a CA 2.3 with current control modification. My battery is a lifepo4 20s, bottom...
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    Full susp. conversion, cur/volt controlled throttle!

    Thanks for the tip, I just kept the seat post and rack mounted as single piece and didn't set it correctly for blind mount. I will surely fix it. I have been running a 8kg battery on this rack for 8 monthes now and it's still in one piece, but I admit that the weight distribution was awful, it's...
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    Full susp. conversion, cur/volt controlled throttle!

    Build log continue... The front carrier is received, very good quality and quite strong. Here is mounted with appropriate bag and the battery inside: Here you can see the bike with it: Handling with no speed, we can clearly feel an inertie turning the bar on the front, and as the fork has...
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    Full susp. conversion, cur/volt controlled throttle!

    I received em3ev 12fet 4110 based infineon controller yesterday. Very nice quality, big cables! After mail exchange with Paul and em3ev team, it's more reasonnable to use only 4s lipo in addition to the pack, and we are already in the very high applicable voltage. Regen voltage is 90V which...
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    Raged Cube Reaction 29er Cyclocross BBS02 Build Thread

    I also owned a 2015 cube reaction gtc 29' and it's also a dream to go maountain biking with it... so light (10kg with pedals) that each pedal you push seems to throw you forward. Instead of you I have a suspended fork which is 1.8, so in a no-motor config, you should be not far from 9kg...
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    Full susp. conversion, cur/volt controlled throttle!

    Yes but I am not too confident in splitting the battery in 2, I have 2 BMS to buy and cable... And the battery is to sell today, I would be pleased to take 3x6s lipos instead; less bulky, lighter and can be put into small frame bags. It's just a solution which I can live with today. If this is...
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    How much power does a bicycle need to be "safe" in traffic

    I think 1kw is okay, the problem is not so much power than visibility. This is also the case motorbike, and they are much more powerfull. Issue is their visibility, so they have (here in france) front and rear light always on, break light and indicator.
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    Full susp. conversion, cur/volt controlled throttle!

    Making this topic alive a little... :D I never received the case I ordered, I think the deliverer wasn't a good man. I am to open a ticket. And finally I changed my mind. Actually I found this from thule...
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    BMS and controller for Li-po

    Hey Dias, I'm running the same kind of idea here. I had lifepo4 big battery and it doesn't really match with my full suspended bike. I had a look at multistar lipos and they look attractiing, beside all wjhat has been said here. Just a hint: why not taking 2x 6s 16ah battery instead of 3x 4s...
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