Search found 347 matches

by zener
Dec 20 2015 9:34am
Forum: E-Bike General Discussion
Topic: California: AB-1096 to classify an "electric bicycle"
Replies: 105
Views: 8511

Re: California: AB-1096 to classify an "electric bicycle"

Alan B wrote:Perhaps we should have our own ES stickers that rate in more useful units, such as watts per spoke.
I kinda like more 1 Horse Power. But the real one... 8)
by zener
Dec 19 2015 9:17am
Forum: Battery Technology
Topic: Are batteries more expensive than petrol?
Replies: 67
Views: 4916

Re: Are batteries more expensive than petrol?

Henri_gr wrote:Are batteries more expensive than petrol ?
Now yes.
.
If I would be stupid I would believe you.
by zener
Dec 19 2015 12:53am
Forum: Battery Technology
Topic: Are batteries more expensive than petrol?
Replies: 67
Views: 4916

Re: Are batteries more expensive than petrol?

Batteries make about 1/3 sometimes 1/2 of tthe cost of an LEV. So its viable to get the most cycles out of the pack. That is possible if you buy high drain cells (15A - 20A) and make the pack 20-30% bigger than your maximum commuting need is. So get the Samsung 30Q or 25R or LG HE4 or HG2 they will ...
by zener
Dec 18 2015 11:01am
Forum: Battery Technology
Topic: Samsung INR18650-25R cycle test.
Replies: 246
Views: 23188

Re: Samsung INR18650-25R cycle test.

Interesting conclusion. Didn't expected that the rate of discharge have so much impact on cycle life. I am curious to see cycle test for a 80% capacity cycle from the beginning till 500 cycle. So every cycle 2000mAh (@ 1C/1D ) charge and discharge from the beginning rather than fixed voltage charge ...
by zener
Dec 18 2015 2:32am
Forum: General Discussion
Topic: MUSIC thread
Replies: 153
Views: 15706

Re: MUSIC thread

Smooth Criminal M.Jackson -like never seen before.
by zener
Dec 17 2015 10:16pm
Forum: General Discussion
Topic: The Ebiker Joke thread...
Replies: 1543
Views: 119049

Re: The Ebiker Joke thread...

If you don't laugh watching this than you re not an ebiker! :D
by zener
Dec 17 2015 8:59pm
Forum: Battery Technology
Topic: Samsung INR18650-25R cycle test.
Replies: 246
Views: 23188

Re: Samsung INR18650-25R cycle test.

How about a cycle test with constant capacity rather than voltage?
So instead of charging always from 4.15V to 3.1V.
Charge from near empty to 75% (1875mAh) of the initial capacity 2500mAh .
Than always cycle 1875mAh till 500cycles.
by zener
Dec 16 2015 11:53am
Forum: Battery Technology
Topic: Are batteries more expensive than petrol?
Replies: 67
Views: 4916

Re: Are batteries more expensive than petrol?

Aren't motorcycle chain, brake pad, maintenance from wear and tear, insurance quite expensive if you do lots of miles? I mean if you do like 20k miles per year, you need to change few times the chain and brakes and do regular checkup? Are these cheap? I often see chain, sprockets, lub and other cos...
by zener
Dec 16 2015 11:25am
Forum: Battery Technology
Topic: Are batteries more expensive than petrol?
Replies: 67
Views: 4916

Re: Are batteries more expensive than petrol?

I have done some calculations. I estimate that 8,000 watt hour is equivalent to 2.7L of petrol. Cost per 100km electric: $7.73 (estimated) Cost per 100km petrol (cbr125r): $3.90 This is excluding tyres ($1 per 100km) and other components that are either unforeseeable or would affect both electric a...
by zener
Dec 15 2015 7:44pm
Forum: Battery Technology
Topic: Are batteries more expensive than petrol?
Replies: 67
Views: 4916

Re: Are batteries more expensive than petrol?

Yeah but the picture had also could be a HUB-Zilla or Cromotor.... They can deliver same power as the complicated inefficient ICE and look basically the same. (dont tell the cops) :mrgreen: To the Controller: there are new drives not yet for sale sadly. like the from Lebowsky which dont need Hall se...
by zener
Dec 15 2015 3:02pm
Forum: Battery Technology
Topic: Are batteries more expensive than petrol?
Replies: 67
Views: 4916

Re: Are batteries more expensive than petrol?

You missed to bring up the resale value from the both systems. Just take a look at these: http://www.leafmotor.com/hub-motors/8-electric-bike-motor.jpg http://www.dirtbikefix.com/images/dirt-bike-engine.jpg How many moving parts and points of failure you can see? For the gas engine i have no clue (m...
by zener
Dec 14 2015 4:06am
Forum: General Discussion
Topic: YOUTUBE RECOMMENDS :
Replies: 966
Views: 56878

Re: YOUTUBE RECOMMENDS :

Sometimes only a SUMO can cure the pain.
by zener
Dec 12 2015 11:13am
Forum: Motor Technology
Topic: Are the ADAPTTO kit $$$ as people think....?
Replies: 48
Views: 4371

Re: Are the ADAPTTO kit $$$ as people think....?

There is also always the option to buy a (plug in ready) Pedelec in a supermarket like Aldi for dirt cheap. :D
Its also even compliant with the visions from the politicians on how teh electric-bike has to be.... :)
by zener
Dec 08 2015 1:11pm
Forum: Battery Technology
Topic: Samsung INR18650-25R cycle test.
Replies: 246
Views: 23188

Re: Samsung INR18650-25R cycle test.

Maybe it would help to stop discharge at different stages and than after a little resting time measure the voltage under no load?
by zener
Dec 07 2015 12:17pm
Forum: General Discussion
Topic: Airpocalypse
Replies: 3
Views: 247

Re: Airpocalypse

Maybe it would help to implement a Pedelec law. Because a little workout in the fresh air is always good. :D
by zener
Dec 07 2015 12:21am
Forum: General Discussion
Topic: Quantum Entanglement and "Spooky Action at a Distance"
Replies: 14
Views: 1741

Re: Quantum Entanglement and "Spooky Action at a Distance"

If one electron can be two tahn we can double our 250wh/kg 18650 battery to a 500wh/kg battery !
I love quantum mechanics. :D
by zener
Dec 06 2015 3:54am
Forum: E-Bike General Discussion
Topic: Aussie 200 Watt Limit Thread
Replies: 1184
Views: 83934

Re: Aussie 200 Watt Limit Thread

Having been a motorcycle rider for several years, and seeing how lightly some of my erstwhile companions treated their residency on earth, the last thing we need is untrained riders on vehicles fsst eough to get them into trouble, but not fsst enough to get them out of it. I'm not sure if you mean ...
by zener
Dec 04 2015 2:42pm
Forum: E-Bike Technical
Topic: Wheelchair with Handcycle
Replies: 176
Views: 7327

Re: Battery Charge Cycles.

Optimums for li-ion type batteries is: Charge to 80% slow Discharge not under 10% The lower the discharge rate the better. E.G. for a 20A rated 25R cell 5A peak would mean very long cycles. Avoid temperatures over 40`C and under 10`C . Use insulation in winter and fans in summer. :mrgreen: When not ...
by zener
Dec 02 2015 12:57pm
Forum: Alternative Energy
Topic: Electrons from the Moon
Replies: 4
Views: 956

Electrons from the Moon

Mind-blowing concept.
Tidal power lagoon in Swansea Bay.
Powers 120.000 homes for the next 120 years. And costs 1.000.000.000 USD. :mrgreen:


EDIT
155.000 homes
better explanation :mrgreen:


http://www.tidallagoonswanseabay.com
by zener
Dec 02 2015 12:08pm
Forum: Battery Technology
Topic: Samsung INR18650-25R cycle test.
Replies: 246
Views: 23188

Re: Samsung INR18650-25R cycle test.

I like test 4 because I rarely run my battery down all the way but I always have to decide if I want to charge to 4.1 or 4.15. It would be nice to know if there is a difference between 4.1 and 4.15. But we already know the difference from: Test2: 4.20V >>> 3.10V @ 2.5A (electricbike test voltage +O...
by zener
Dec 01 2015 6:58pm
Forum: Battery Technology
Topic: Samsung INR18650-25R cycle test.
Replies: 246
Views: 23188

Re: Samsung INR18650-25R cycle test.

I would prefer to make Test4 to Test6 because the other both are more interesting.
Does electricbike have >=3 fresh batteries left?