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  1. Sunder

    How much battery capacity is lost annually?

    Yes, the reason BMS equipped batteries should be stored with a higher state of charge is because the BMS draws power from the pack. That's all. Having a BMS does not change the chemical reactions going on inside the battery. Ideally, you'd store it with 50% charge and check it often enough that...
  2. Sunder

    DIY ebike spare parts - Abandoned bicycles

    Yeah. A bike that is chained to a pole, rusty and key parts missing might still be wanted. I saw some guy cussing out because he'd chained his bike up a few hours ago and someone had just nicked his wheels. He thought being in the CBD it was safe. At least he got the rest of his frame back...
  3. Sunder

    new eZip motor

    Por qué no los dos? Somalia, Palm trees, sand, warmth all year round AND you get to dodge bullets! Ahem.. new eZip motor by latecurtis » Aug 07 2014 9:47am
  4. Sunder

    new eZip motor

    Anyone following this thread for the last 8 years knows that LC has left at least once per year almost every year. He most likely will be back eventually unless misfortune or misadventure means he can't. Hope he's safe though. A lot of instability in the US at the moment.
  5. Sunder

    new eZip motor

    That's good news LC. Good luck with the move.
  6. Sunder

    new eZip motor

    I read a lot of US news and spend a bit of time in US Reddits. Life has always seemed tougher in the US for anyone not on a high income, but a paradise for anyone that was. Seems like that has become 10x more true in the last 6 months. Read a few posts in r/Antiwork and you can sense the...
  7. Sunder

    new eZip motor

    There you go. I have little idea of US geography, bar the big cities, etc. They don't really work all that well here in Sydney either. We do have our very hot dry days, but more often, when it's hot, it's around 60% humidity. Not like Queensland - or Florida - for example, but evaporative...
  8. Sunder

    new eZip motor

    Yeah, I'm in Australia, so no help finding or referring anyone there. It's bitterly ironic that campers/motorhomes are now the province of the very rich and the very poor. Before Covid, I was looking at getting a 2nd hand entry level one. Would have been about $4k USD, needing about $1k-2k of...
  9. Sunder

    new eZip motor

    If you get desperate and still have power, you can put a fan by the window, sucking in air from outside, passing over a series of bedsheets or towels which have been soaked in water. Also, keeping yourself damp will help. Note that you must have another way for the air to get out of the...
  10. Sunder

    new eZip motor

    No way that's 70 pounds of washing. I reckon I could fit most of that in my home washer, I think is rated for like 7kg. That's about 16 pounds? Even the big ones I see at the laundromat are like 15kg, and there'd be room to spare qith what you got. Anyway. Guessing you don't have machine of...
  11. Sunder

    new eZip motor

    Thanks mate. My local hardware store sells them. I might get one and give it a go on some scrap material. I don't drill sheet metal very much, but I do occasionally drill acrylic. Might see how they go on that.
  12. Sunder

    new eZip motor

    For my learning, what's the advantage of those style drill bits instead of a standard high speed tungsten drill bit? Do they leave cleaner holes?
  13. Sunder

    new eZip motor

    Rather depressive talk going on there. Over the years, you talk like that when you're frustrated. Anyone would be stressed in your circumstances. Ebikes aren't a bad hobby for self distraction. It's not the most expensive hobby in the world, and you can keep tweaking and tuning a long time...
  14. Sunder

    new eZip motor

    It's also why you don't burn bridges. Means you can end up eating shit when you least can afford to. I don't know your full situation, why you're leaving, etc. But if you haven't burned any bridges, you can always call your landlord, and say "Mate, I've been put in a real hard situation. I know...
  15. Sunder

    new eZip motor

    Project Management 101 dude. I've been working with PMs for the last 20 odd years, but the last 2 has been the first time I've actually seen one do risk management for projects. (Most the project managers I've worked with are the cheap "I just got my PRINCE certification and will work for 50k a...
  16. Sunder

    new eZip motor

    Hope you got there okay LC. I've not really been able to keep fully across your antics since getting back on this board. Life's still been a bit crazy and in fact I've barely made any progress on restoring my own bike. Where are you moving to, and why? I saw a couple unanswered questions in...
  17. Sunder

    new eZip motor

    There doesn't seem to be the level of fraud/misrepresentation in LTO as there is in the more common battery types. I guess consumers and hobbyists buy 18650s and LiPo packs, but if you use LTO it's a much more niche application. I'm not sure what you mean by 24v max on my post? There'a no...
  18. Sunder

    new eZip motor

    Man, you get some good tips in this thread. I bought some handyman quality drill bits which were fine when I was working on wood and aluminium. But when I started working on some steel frame for a car port, they started snapping on me. I'm now wondering if I was using the wrong lubricant. (WD40...
  19. Sunder

    new eZip motor

    Plus ça change, plus c'est la même chose. Been a while. Coming back to Endless Sphere, as I'm resurrecting my old Q100H commuter. Been recalled back to the office 2 days a week. Just thought I'd stick my head in here and at least read the last page or so. Not much changes. Good to see you...
  20. Sunder

    new eZip motor

    Dropping in briefly as I got a PM from another member about a cancelled Ninja project. Thought I'd see how this thread is going. Still the same old, same old. I don't know if I'll be dropping back more often. Although it was not the reason I dropped off this thread, I lost interest in the...
  21. Sunder

    supercap battery boosting

    Supercaps are probably the wrong tech to do what you're suggesting. High power density LTO might be better. The Toshiba SCiBs configured for 48v can deliver 10kw for 10s at just 3kg. (6.6lbs). Does that make sense on an eBike where the main battery is only 5kg and max draw is 1kw? Of course...
  22. Sunder

    280-320vdc to 220+AC?

    Hey guys, Long shot here, but I have been wanting to try to build an inverter from my PHEV to 220+vac. I've had a look around to see how I can step this up to 380vdc, so I can then convert it to a mains voltage, but either we're talking about things in the milliamp range, or ... actually that'...
  23. Sunder

    new eZip motor

    Typical infancy failure rates for electronic components is around 25 per million. So the odds of you repeatedly getting DOA parts like you have is so low, you must be the unluckiest man on earth, or PEBKAC... On that note, you criticise the manufacturer for not testing parts outbound, when...
  24. Sunder

    new eZip motor

    Ah yes, prediction one true already. And, prediction two has come to pass. There's prediction three. There's Prediction four. Only one prediction left, before I become a certified fortune teller!
  25. Sunder

    new eZip motor

    So how sensorless controllers work, is that it just sends a jolt through one pair of the phase wires that should get the motor going, and then read the back EMF in lieu of a hall signal to get the motor going. Then, once the motor is going, it can read the back EMF to accurately fire off the...
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