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    Sabvoton 72150 Suddenly Cuts Out

    Anyone experienced a problem with their Sabvoton ESC suddenly cutting completely out while riding? Especially during acceleration. Back in 2017, I put together a custom fast enduro e-bike with a Sabvoton SVMC72150(M). But now the Sabvoton has developed a serious flaw. I've ridden this bike...
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    Juicing Up Pictures

    Here is me charging my e-bike at a workplace parking garage: I had a small 180W charger with me and had a power meter placed in line to verify charging. There was a plugin-hybrid Toyata Prius also sharing the same outlet with me. Nobody's going to notice my little ol' me pulling 180W...
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    Show me your front light(s)

    My current front lights have two parts: My primary is a 20W motorcycle "passing light" as the main headlight. Fully weather proof and tuned optics makes beam just right for riding on the streets. This 20W light accepts up amazingly wide 12VDC to 80VDC input range so switch it directly off...
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    High power ebike means none of the rules apply to me

    I agree our bikes (including fast 120lbs e-bikes) would only dent a car's panels or break a light. Maybe even smash a windshield. Automobiles have nothing much to worry about fast e-bikes. On the other hand, pedestrians could be hurt a lot. At those 45+mph speeds and combined weight of rider...
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    Help me reinforce this DC to DC step up.

    That's an important point! I've done it the other way enough times to know of the "pop" and spark that results. I think it can damage the BMS on the e-bike as well as the booster. My BMS's Bluetooth connection sometimes needs to be reset if I do this. After realizing the potential for...
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    Help me reinforce this DC to DC step up.

    I have what appears to be the same Buck Booster unit. I took the the brute force approach and added extra heatsinks taken from a dead Asus motherboard to spread out the heat. I removed the noisy little stock fan and replaced it with an extra quiet 120mm Arctic F12 PC case fan. I used thermal...
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    Li ion BMS 16/20 S 50 A with Bluetooth controll via app

    UPDATE: There are issues with the "Overvoltage" parameter. It only accepts at minimal 4.00V so its use is limited. :x
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    Li ion BMS 16/20 S 50 A with Bluetooth controll via app

    Yes, I'm not too confident of the 50A discharge rating either. I only connected this BMS for charge side input and not discharge. My e-bike can also pull well over 50A was the other reason. I think I found a way to get this BMS to cut off the charge at an arbitrary voltage. The "Overvoltage"...
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    marksuttonbike's spam articles

    I like that. Simple and succinct. Or a bit simpler in case its loud or in the middle of traffic, "I'm not cheating, I don't play your game!"
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    Li ion BMS 16/20 S 50 A with Bluetooth controll via app

    I just got this BMS working on my latest 18-cell e-bike. The cell voltage calibration appears very good as they individually QA check each item before they send it out. Bluetooth connectivity worked fairly well but there doesn't appear to be any security code so possibly anyone can connect...
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    California is considering a ban on ICE Cars (yay!)

    California currently rakes in 38.13 cents in tax per gallon from gasoline and 41.70 cents in tax per gallon from diesel. This is the 7th highest among all states according to Wikipedia. https://en.wikipedia.org/wiki/Fuel_taxes_in_the_United_States#State_taxes The federal government takes in...
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    marksuttonbike's spam articles

    I heard this once commuting back home from a bicyclist on the other side of the street going the opposite way. It was "cheater!" At first I didn't know exactly what he said from my wind noise as I rolled down the street on my own e-bike. I would have said "Cheating? Depends on what game...
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    Alternative DIY off grid charging of battery pack (DIY also)

    You're creating a generator from e-bike parts? Once the generator is engaged, you'll hardly be able to pedal. Even then, if you put in 'x' units of power, you'll only be able to get a fraction of that back for riding later. This mobile pedal generation idea is impractical when it is powered...
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    What battery chemistry do you use? (Ver. 3)

    Since I built my first e-bike over 3 years ago, its been 12s LIPO all the way for me . I also hobby with electric RC helicopters/multicopters and RC planes so using my stash of LIPOs and infrastructure of chargers, connectors, tools, and wiring for e-bikes was a natural extension of my electric...
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