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  1. T

    Your Creation's Before & After Pics

    My new Monster bike. 21 LIPO bricks in config 3Sx7P which gives nominal 72V 35Ah on an old skunky GIANT frame. Sabvoton controller and 3000W capable hub motor. All enclosed in 3d printed plastic case waterproof and snapping toghether . The bike handles very well as weight distribution is...
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    Reliability of Impulse Motor

    Hello, I am having problems with the torque sensor of this motor: It seems jammed a bit, when I push too much on the pedal sometimes the motor remains engaged also when I release pressure for sometime. Does anyone have had that or have a clue of how to fix that.Is it even possible to find that...
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    Your Creation's Before & After Pics

    GIANT MTB ( UNKNOWN MODEL BOUGHT 5TH HAND BUT VERY ROBUST FRAME ) 1ST VERSION - 72V 20AH SABVOTON 07260 2ND VERSION - 72V 35AH WITH 3D PRINTED BATTERY & CONTROLLER HOLDER VERY STABLE DESIGN FAST BIKE. Only Con so far weak breaks they need disk upgrade.
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    E-BIKE 3D PRINTED BATTERY CASE

    Status of work around 80% now.
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    TROUBLESHOOT BAD BATTERY PACK

    I see Voltron. Would it be a way to prevent this? I mean a way to realize that one cell is going bad before it actually compromise also the others?The thing is that when the single cell goes bad in a paralleled wiring you might not notice that because voltage is kept high from the good cells on...
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    TROUBLESHOOT BAD BATTERY PACK

    Hallo, I have been using for sometime a LIPO battery pack composed by 12 bricks (6s x 5000ma each) in configuration 4Px3S with a Sabvoton controller (72v60A). I have balance connector of paralleled bricks always connected in parallel. I do not own a bms but I always parallel charge with a...
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    E-BIKE 3D PRINTED BATTERY CASE

    @TRIKETECH....very nice machine...looks quite advanced designing and refining
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    E-BIKE 3D PRINTED BATTERY CASE

    No they are not all the lipos I have to fit I need to stick 9 more :). It is not that wide I tried before with fitting samples and the width ( 11 cm ) is just fine. I am from south of Rome and I am trying to have a bike that can commute roughly 60 km in a day with 400 meters of altitude change...
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    E-BIKE 3D PRINTED BATTERY CASE

    I also post some pics of a parallel connector for XT-90 LIPO connectors. Basically you can click the 2 bodies toghether after having sticked in the bullet connector and screw them toghether with 12 AWG wire in between the two. So far it is working very ok. I suggest for 3d printer owners to...
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    E-BIKE 3D PRINTED BATTERY CASE

    Some pictures of my ongoing project. So far I am very impressed with the overall quality and durability of the plastic pieces out of the 3d printer. I willl post soon further progress. So far it looks and feels very firm clean way of mounting LIPOS around the frame. I will be able to put...
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    LIPO CELLS BALANCING DOUBTS

    Thanks to both of you for the reply. For quest.number 4 I'll go for Chalo answer + explanation. It makes more sense for me than just a generic "Do not do that". My idea is that even if Multistar are not the best lipo to release power ( average IR is around 6-7 micro ohms per cell ) even a mild...
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    LIPO CELLS BALANCING DOUBTS

    Good afternoon, I have been a happy owner of a DIY e-bike since 2015. My batteries are 12X 24v5000mah Turnigy and they are configured in 3sX4P (72v - 20 Ah ). Also Balance leads are connected accordingly. They have always been balance charged with relatively low currents ( 5 to 10A) to 4.1V...
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    E-BIKE 3D PRINTED BATTERY CASE

    Some update after a while of silence. I have left a little bit at rest my project for a while because of too many things to take care of. Now I put back my 3d printer at work and I have a nice design on how to distribute battery on the bike. PS see pic below for reference. The idea is to set...
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    E-BIKE 3D PRINTED BATTERY CASE

    Hello there, I am an happy owner of a custom e-bike on a Giant frame with a setup of 12 x 6s5000mah Turnigy LIPOs + SVMC72060 controller. I have had it for 3 years plus now and I use it as a daily commuter. I really cant complain. Infact with a 1000 Euros cumulated investment I was able to...
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    HELP UNBALANCED CELLS

    when I parallel cells for charge the balancer does its job and bring veeeery slowly all cells to same voltage. Anyway sometimes to accelerate this process I discharged the higher cell to lower voltage using a resistance through the lead balance wire. But when discharging the bike seems to build...
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    HELP UNBALANCED CELLS

    Every battery is 6s ( 24 V ) so my config. is 3 sets of 6s4p which are in series ( 18s4p) when in discharge mode and 6s12p when charging. Also lead balances are connected in parallel when charging to balance the charge. I check voltage on lead balance wires with a celllog8S and it's quite...
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    HELP UNBALANCED CELLS

    Good day everyone. I am writing to get some help and to understand with knowledge of skilled ppl on this forum what is going on in my battery pack. I have a 72V 20ah battery made out of 12 lipo turnigy 24v5ah. As u can imagine I have in the configuration 3x4. I charge them with a balance...
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    Specialized Big Hit FSR with midmount

    Hello, very nice build I think this is an inspirational build for everyone here. I have a question but probably I am quite ignorant in electronic trying to improve bit by bit:) i saw you have 3 series lipo and 2 parallel ( 66v 16Ah I think). Is there a vantage in leaving balance leads connected...
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    Help choosing hub motor kit

    Fully aware of that... Thanks x the heads up but I am also aware of the fact that with 250W in Italy u ain't goin nowhere. I think that making a wise use of e bikes avoiding high intensity traffic areas and keeping a low profile you can easily plan on a daily use. X example roads to work for...
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    Help choosing hub motor kit

    Hello everyone, since this is my first post I would like to introduce myself. i am Italian and live south of Rome.I work in the aeronautical businness (pilot). I started reading from this site from last year because I am in general really in favour of green and sustainable technology. Plus I am...
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