Search found 2964 matches

by Sunder
Aug 10 2020 8:00pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

I never had hard shell LiPo. I know that when the soft LiPo packs have an unstable cell it puffs up. I wonder what happens if a hard shell LiPo gets an unstable cell. How can it puff up ? I am just curious. Hopefully it wont happen as the cells I bought off of e bay were cheap junk. Hardshell LiPos...
by Sunder
Aug 09 2020 10:23pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

Seen these? https://cdn-global-hk.hobbyking.com/media/catalog/product/cache/1/image/660x415/17f82f742ffe127f42dca9de82fb58b1/1/8/189966.jpg https://hobbyking.com/en_us/turnigy-5000mah-4s1p-14-8v-20c-hardcase-pack-1.html?queryID=&objectID=74826&indexName=hbk_live_magento_en_us_products_hbk_price_stoc...
by Sunder
Aug 09 2020 8:25pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

233 pages of building a electric bicycle? Might be easier, cheaper, and faster to buy a electric bike . No, it's 233 pages of LC ignoring advice, and being proud of below par performance, because he did it "his way". If you're gonna be a part of this thread, you're gonna have to learn to live with ...
by Sunder
Aug 09 2020 3:58am
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

If packs are new or only run a few cycles how could there be a 10% internal resistance ? I have no doubt the old packs have internal resistance but do not understand how almost brand new packs could. Brand new, top quality cells have internal resistance. Quality manufacturers grade them, and assemb...
by Sunder
Aug 09 2020 3:36am
Forum: Battery Technology
Topic: Australian RCM certified 58.8V 10A charger sources?
Replies: 2
Views: 59

Re: Australian RCM certified 58.8V 10A charger sources?

The HLG600 series is RCM marked and will come close, but tops off at 54v. https://www.meanwellaustralia.com.au/products/hlg-600h If you're not negotiable on the RCM, then you have a few options. 1. You could use a DC to DC converter to get the last 4.4v it's an 11amp capable switch mode, so you have...
by Sunder
Aug 08 2020 9:42pm
Forum: Battery Technology
Topic: Quick question for any battery expert
Replies: 9
Views: 156

Re: Quick question for any battery expert

As long as the BMS is still working, you'd just lose 11% of the capacity. When in use, the 8P string will empty first, then the BMS will cut off discharge. When recharging, it should still charge up reasonably equally, but may spend more time balancing. If the BMS isn't working properly, a fireball ...
by Sunder
Aug 08 2020 7:49am
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

I don't think anyone can confidently answer that question. If you bought named brands and reliable performance batteries, the answer would be yes, you could. But with that junk? If one is even 10% bigger or lower internal resistance than the other, you're going to have huge balancing and performance...
by Sunder
Aug 06 2020 3:46am
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

Do you really need a bike rack for the occasional repairs? It's rare that you would ever need to bring in a whole bike. Wheel need truing? Bring in the wheel. Need new brake pads? Just bring in the frame. Is it just because of the way you've built your bike that it's hard to break down for transport...
by Sunder
Aug 05 2020 11:58pm
Forum: General Discussion
Topic: How long do your matresses last?
Replies: 5
Views: 154

Re: How long do your matresses last?

Last one lasted 20 years, even though it was meant to be replaced after 10. I took care of it though. As I have allergies to dust, I had a mattress protector on it, and steam cleaned it once a year. New one is latex topped inner spring. It's really nice. Normally very pricey, but I managed to score ...
by Sunder
Aug 03 2020 8:51pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

Starting to think this is turning into the documentary "Reversal of Fortune" https://en.wikipedia.org/wiki/Reversal_of_Fortune_(2005_film) The stimulus money won't keep flowing LC. What have you done with the FX motor? What makes you think you will do any more with a Cromotor? And if the answer is "...
by Sunder
Aug 02 2020 8:21pm
Forum: E-Bike General Discussion
Topic: Undersized Controller ??
Replies: 39
Views: 820

Re: Undersized Controller ??

That my friend is a mechanical noise...it sounds right at the start(you can barely hear it) and gets louder as u pick up speed.... Dont know what it is but its mechanical. Everything is tight. Brake pad clearances good. Initial noises are different and very minor. The grinding noises occur only whe...
by Sunder
Jul 30 2020 7:36am
Forum: E-Bike General Discussion
Topic: UK will be electric bike capital of the world!
Replies: 43
Views: 934

Re: UK will be electric bike capital of the world!

If petrol was expensive in Australia as it was in the UK, you wouldn't need to lock down our cities - nobody could go anywhere. The consequence of a country that is 32 times bigger than the UK, but 1/3rd of its population, and a love for big V8s. Oh, and did I mention we have no strategic reserve of...
by Sunder
Jul 29 2020 7:30am
Forum: E-Bike General Discussion
Topic: Undersized Controller ??
Replies: 39
Views: 820

Re: Undersized Controller ??

The problem of worn springs not letting the clutch engage properly has been well known, and given I drive my Q100Hs up to 1100w, it was a almost considered a consumable. But I've had one where the spring didn't exactly wear, so much as tangle and get crushed under the roller. I couldn't see what was...
by Sunder
Jul 29 2020 7:15am
Forum: E-Bike General Discussion
Topic: UK will be electric bike capital of the world!
Replies: 43
Views: 934

Re: UK will be electric bike capital of the world!

I had a friend at uni who was hardcore socialist. Like really hard core. She felt that the world's wealth should be shared equally. I pointed out, that at the time, if the world's GDP was divided equally among all the citizens at the time, we'd have about $7k USD to spend a year each. And although w...
by Sunder
Jul 29 2020 7:02am
Forum: E-Bike General Discussion
Topic: Undersized Controller ??
Replies: 39
Views: 820

Re: Undersized Controller ??

Yeah, you've ruled out my first suggestion. I think Amberwolf's suggestion is your next best bet... The only thing I can think of after that is a dodgy clutch could *possibly* do what you're describing, but to be honest, I've never opened up (or owned for that matter) a Bafang geared hub, so I have ...
by Sunder
Jul 28 2020 8:04pm
Forum: E-Bike General Discussion
Topic: Undersized Controller ??
Replies: 39
Views: 820

Re: Undersized Controller ??

Without seeing or hearing it, I'm going to take a wild stab that it's a badly tuned sensorless start. If it is, it will judder and hum a bit while lurching you forward a little, then be perfectly smooth and fairly quiet once you've moved more than about 1/3rd of a rotation of the wheel. I went to th...
by Sunder
Jul 28 2020 8:09am
Forum: E-Bike General Discussion
Topic: UK will be electric bike capital of the world!
Replies: 43
Views: 934

Re: UK will be electric bike capital of the world!

Pretty sure everyone thinks that of their own government ;) That said, I've been working in selling IT into government for the last 12 years, and the lower you go down the chain, the more true it is. Federal government will squeeze every last dollar of discount out of you, then demand more features ...
by Sunder
Jul 28 2020 7:52am
Forum: E-Bike General Discussion
Topic: UK will be electric bike capital of the world!
Replies: 43
Views: 934

UK will be electric bike capital of the world!

The Government is planning to subsidise electronic bicycles for pensioners and commuters as part of plans to massively increase cycling through a £2billion anti-obesity drive. The e-bikes are like regular bikes but have a small motor usually hidden in the frame to aid travel uphill or on longer jou...
by Sunder
Jul 28 2020 12:58am
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

It seems even the most peaceful parts of the world has turned to violence and chaos. Why, in Australia, we've had a veritable army of women named Karen, not only refusing to wear masks, they keep yelling "I don't consent! I don't consent!" when they are arrested!

Is nowhere safe any more?
by Sunder
Jul 27 2020 8:40pm
Forum: Battery Technology
Topic: Laudation batteries
Replies: 18
Views: 960

Re: Laudation batteries

Another forum member bought one of these despite me warning him the specs were impossible even if they used genuine cells. He was disappointed with them, and estimated they were about half their advertised capacity. Take it with a grain of salt though, as his testing methodologies leave quite a lot ...
by Sunder
Jul 25 2020 1:09am
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

No such thing as a 500w motor. The motor will draw as much power as either the controller will let it, or there is torque to resist. Impossible to tell you what is going wrong without seeing your setup. If it uses an external shunt, it's possible you have the wrong one. Or it's entirely possible tha...
by Sunder
Jul 21 2020 3:43am
Forum: E-Bike General Discussion
Topic: Best high current connector
Replies: 33
Views: 1095

Re: Best high current connector

As Madrhino said, any good connectors will be expensive. However: There are cheaper imitation Andersons. I ordered a set from Aliexpress, the quality seems adequate, but I had them on an interior, stationary, very rare disconnect use case (been disconnected about 8 times now, minimal pitting on cont...
by Sunder
Jul 18 2020 6:01pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

I don't see a reason why this would not work either: https://i.pinimg.com/originals/8e/0d/27/8e0d274114080038a38fe51b906f88b3.jpg But it's still not the best tool for the job. For a DC breaker to be effective as a switch, you'd want it marked with "Switch Duty", and for the rating to be above the in...
by Sunder
Jul 17 2020 11:10pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5823
Views: 494481

Re: new eZip motor

Really, the best option would be a cheap relay, controlled by a cheap switch, and a cheap fuse in line for short circuit protection. No arcing (that you can see or be exposed to anyway) will last a long time, and won't cost much for reliable quality. Except there's a bit of work and skill involved i...
by Sunder
Jul 16 2020 7:05am
Forum: E-Bike General Discussion
Topic: Motor cover split around freewheel while pedaling.
Replies: 31
Views: 546

Re: Motor cover split around freewheel while pedaling.

Have you thought of shot peening your new cover when it comes? Sometimes metal when manufactured does have cracks and inherent stress lines invisible to the naked eye, and cause this kind if failure. Shot peening can fix those. Cryo treatment is also another way to relieve hidden metal stress. It's ...