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    24v LiPo Electric Mower Conversion

    Thought I'd post some info regarding my LiPo conversion on a faulty 24v 4Ah Li-ion (BLDC motor) mower bought from eBay for £30. I added 6s2p LiPo at 12Ah. The only problem that I encountered was the fact that the old battery had 3 terminals: B+ B- and a thermistor connection. Without the...
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    Strava anyone?

    I use it to troll the Lycra brigade and blow their king of mountain times out of the water! I get a new KOM on every ride ha!
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    Battery in backpack vs. mounted to frame

    I've ridden with batteries in my backpack for years, much prefer it this way. Means I can quickly lock up my bike and take my batteries with me. Also keeps my not so road legal setup looking stealthy. This is my most recent backpack which is heavily padded to protect my LiPo...
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    Chain guide for 42 to 44t ?

    I run a 53t chaining and also had a lot of trouble with the chain dropping off, I tried all sorts of chain devices that I had modified to fit but none of them were reliable enough. As a last resort I fitted an aluminium chain guard to the crank. It worked perfectly, no more getting off every 10...
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    I keep having flat tires

    Get a decent tyre inflated correctly and you won't look back. I've been using Maxxis Holy Rollers for years and can't remember the last time I had a flat! Plus they roll quickly and have decent grip off road due to the inverted knobbly pattern...
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    Connecting 2 x 48V 15Ah kettle battery packs in parallel

    104v isn't crazy, I've just made that voltage setup using a Lyen 12 fet 4115 84-132v controller. I have enough spare lipo to to run at even higher voltage (150v being the absolute limit for the fets). I just had to include a pre charge resistor in my circuit for connecting the packs because it...
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    76v 13.3Ah samsung 20R pack with kelly 100-150A controller

    Jeebus, that fat bike looks like a motorbike, do you not get the attention of the 5-0? The fact that the controller can output 150A peak for 10 seconds would be worrying if you weren't limiting the current with the CA. I'd take the battery manufacturers current claims with a pinch of salt if the...
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    Schottky Diode - Series Connection of batteries.

    Shameless BUMP! Thought you guys were the font of all knowledge... ;)
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    Magic Pie 3 Modification

    Well, went ahead and did the modifications :) still running on 48v at the moment but the extra current from the Lyen controller is impressive! Now to build the extra 48~v pack to add in series...
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    Magic Pie 3 Modification

    Yeah the later MP controllers may be potted but mine is open to the elements it appears :p. I'm well on the way to beginning building my new setup now. I ordered a Lyen 12 FET 84-132V High Voltage Racing Controller and a box full of stuff from Hobbyking, just waiting for it all to arrive. I...
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    Schottky Diode - Series Connection of batteries.

    I have been looking into the usage of Schottky diodes to protect the built in BMS of two 48v 10Ah LiFePO4 batteries when connected in series. I understand this has been discussed exhaustively in the past with conflicting views as to whether it is even necessary. I have came to the conclusion...
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    Magic Pie 3 Modification

    Thanks for the link OCD :) Yes I'll be removing the entire controller. I only call it unreliable due to the fact that that if it rains the controller will cut out due to water ingress and then will cease to function for several days.
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    Magic Pie 3 Modification

    Hi, I built a Magic Pie 3 powered by a 48v 10ah LiFePO4 battery into my bike a few years back and am now looking to upgrade to make things more interesting. I intend to replace the unreliable internal controller with a 12 fet external from the likes of Lyen or CellMan. Also I will replace the...
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    Simple Stealth 1000w MPIII Mountain Bike Conversion

    Hi everyone, Im Matt from the UK, just thought I'd share with you some pics/info on my bike conversion. I have posted this because I was looking for a quick and simple way to make a descreet electric bike to commute to work on/have fun that didnt stand out like a sore thumb!! (but had no real...
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