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  1. S

    Use tool dip plastic coating as cell end insulator?

    Thanks, good to know. I'll search his threads and learn from his experience.
  2. S

    Use tool dip plastic coating as cell end insulator?

    I just built a Headway battery pack. I'm considering brushing the cell ends with tool dip, i.e. Plastidip rubberized coating on the cell ends to act as an insulator, in case any of my various bolts or screws rattle loose. This would help minimize any risk of shorts. Would this be a bad idea...
  3. S

    Need clarification when charging with power supply like Mean Well

    Thank you, Thank you, amberwolf! Do the AC inputs have to be paralleled, or can they be plugged into the wall independently? Good point, will need to set this correctly Ahh, yes, of course! That's a brain fart on my part. The BMS I ordered is supposed to be configurable for HVC... or so...
  4. S

    Need clarification when charging with power supply like Mean Well

    I’m looking for help on how to charge using Mean Well LED power supplies. I've done some reading and I think I know what I’m doing, but just need clarification on a few things. Here are the details: Battery: 24S1P, Headway 38120HP cells BMS Purchased, not yet received – JBD 24S, 100A common...
  5. S

    How to charge a 25s lifePo4 battery?

    Yeah, that's a good point. Maybe I will just stick with 24s. Then that will also simplify my charging scenario. BMS is easier to find. Or I go with 3x 8s cell log type monitors and charge them as 3 banks of 8s1p batteries in parallel with my Chargery 1010b+ until I find that is too much of...
  6. S

    How to charge a 25s lifePo4 battery?

    As usual, that's great info from Amberwolf. The cells are used, but from a reputable seller, so I'm not too concerned, but I will do a capacity test on each one before using. I don't plan to use more than 60% of the available capacity between charges and I will be using them well below their...
  7. S

    How to charge a 25s lifePo4 battery?

    Just trying to maximize my motor RPMs and top speed. The PhaseRunner handles up to 90V - so 25s lifePo4 hits that perfectly fresh off the charger - 3.6v*25 = 90v Yes, just for me. On my previous battery, I ran without a BMS. Then I would check each 5s group voltage before charging them all...
  8. S

    How to charge a 25s lifePo4 battery?

    I'm building a 25s lifepo4 battery (25s1p, Headway 8Ah cells). Any suggestions on how to charge it? On my current 25s battery, I'm breaking it apart and parallel charging it as 5 banks of 5S batteries using a Chargery 1010B+ RC battery charger. I would prefer: - not having to break the...
  9. S

    New 80 volt push mowers

    Do you mean you bought the switch box from Greenworks? I'm just repeating the same pattern over and over that I pulled off with the logic analyzer. So no special turn on sequence.
  10. S

    New 80 volt push mowers

    If you put the logic analyzer on the output of the arduino, does the wave match what you saw coming out of the battery?
  11. S

    New 80 volt push mowers

    Cool! Thanks for the feedback. Good to see somebody using it.
  12. S

    greenworks 40V battery circuit help?

    The Omega port needs to see a series of logic signals. Have a look at this thread here: https://endless-sphere.com/forums/viewtopic.php?f=1&t=79384&p=1559001#p1559001 I was able to decode the logic pattern for the 60v greenworks motor and regenerate it with an arduino. If you have access to a...
  13. S

    New 80 volt push mowers

    In case anyone is interested, thanks to Metallover's post and link to the logic analyzer from Amazon, I was able to decode the battery signal from the "Omega" port on a Greenworks 60V battery. I recreated the signal using an Arduino and hooked up the Greenworks Brushless leaf blower using a...
  14. S

    New 80 volt push mowers

    Metallover, I tried your code on an Arduino and hooked it up to my 60 Greenworks brushless blower and it didn't work. I wonder if the 60V batteries need different signalling. I did hook up an LED to the Arduino pin 6 and could see slight flickering so I'm pretty sure the code uploaded and is...
  15. S

    Need help with 80v Greenworks/Kobalt/Stiga chainsaw speed controller

    Hey uula, any update on this? I'm having the same issue. I bought a Greenworks brushless 60V blower. I built a battery for it and if I only connect to the + and - terminals on the tool, it powers up for about 3 seconds, then shuts off. If I wait a bit, it will power up for 3 seconds again...
  16. S

    BBSHD + Grin Phaserunner (52V okay, 72V problem)

    I'll be interested to hear what you find. I had to hack together a tensioner. I'm using an old XT rear derailleur but I extended it with a longer derailleur hanger to fit on my 39T rear single speed setup.
  17. S

    BBSHD + Grin Phaserunner (52V okay, 72V problem)

    The advantage to 72v or even higher is higher RPMs. Then you use lower gearing for equivalent speed. This translates to less stress on the entire drive train, including the gears in the BBSHD, chain, sprockets cogs, etc. The tradeoff is that you can't pedal at those RPMs. The other advantage...
  18. S

    Silent mid-drive torque e-bike motor

    Bafang BBS02 and BBSHD are pretty quiet. BBSO2 more so than BBSHD.
  19. S

    How to connect BBSHD to an external controller?

    Pretty sure it's a JST 2.54 mm pitch connector, but don't quote me on that. You may want to measure to be sure. I moved on from the cyclone controller to a PhaseRunner with a Cycle Analyst. It was a lot more money but absolutely worth it to me. My use case is a single speed, very quiet...
  20. S

    Astro vs Revolt engines

    Well, if we take your current setup of 60V, 45 amps continuous, you are looking at 2700 watts. For the Astro motors, most people are running the Castle Creations HV controllers like the Talon, which only go up to 50.4 volts. So to get your equivalent 2700 watts, you are looking at 53 Amps...
  21. S

    Astro vs Revolt engines

    I would love to see someone successfully do some type of noise reduction enclosure on an Astro build. Then I could copy their design. My Astro build has been sitting, collecting dust since I have been playing with my BBSHD. I want go back to it and do a noise enclosure as well, but just no...
  22. S

    Astro vs Revolt engines

    What volts/amps and gearing are you running at? Have you tried increasing the RPMs, and then gearing it down? I'm using an external controller - PhaseRunner at 82.5volts nominal. I peak at 2400 watts. I haven't too many issues. All of them have been mechanical, like dropped chains and...
  23. S

    BBSHD on 72V 50A controller?

    This is a good thread for reference: https://endless-sphere.com/forums/viewtopic.php?f=4&t=91775
  24. S

    Need a bombproof rear-hub that can handle 2500 watts

    Thinking about just turning the existing hub into a fixed since it's basically what it is right now. I'll open it up and take a look. Maybe I'll throw some JB Weld in there or a bent nail to make sure it's permanently locked up.
  25. S

    Need a bombproof rear-hub that can handle 2500 watts

    Can you point me to an example of a fixed hub?
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