Search found 655 matches

by Cephalotus
Jan 28 2020 10:39am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

... I was just watching some paid-professional Renewables expert do a little speech at Davos, saying that India could easy build 40% renewables and be cheaper than building coal power stations like India currently plans to... Fact is I am sure India would most certainly do that if RE was cheaper, I...
by Cephalotus
Jan 17 2020 8:20am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Governments have to be responsible and realistic about promoting industries that can earn foreign income and revenue. Coal, Gas, even Uranium, are some of our most valuable resources and viable industries. What do you propose to replace them with to generate similar revenue potential and trade poss...
by Cephalotus
Jan 15 2020 6:37am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Ahh !, the cosy comfort blanket of AVERAGE statistics ! Reagrding CO2 or fuel consumption the absolute numbers are relevant and CO2 emissions have fallen at 50 Million tonnes from 2018 to 2019. 1) Germany has not reduced its fossil (coal, Gas, Nuclear, etc) generation capacity,.. it has simply adde...
by Cephalotus
Jan 14 2020 11:55am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Data for electricty in Germany during 2019 is out renewables for electricity: 42,6% (good wind year) coal is falling fast (happened througout most of Europe because CO2 price rose to 25€/t) CO2 Emission: -50 Million t from 2018 to 2019 specific emissions: 414g CO2/kWh in the electricty sector. I hop...
by Cephalotus
Dec 20 2019 5:01pm
Forum: E-Bike Technical
Topic: BionX and phase runner and gauge sensor?
Replies: 2
Views: 415

BionX and phase runner and gauge sensor?

Hello @justin_le and others, I watched your Youtube video using an old BioX motor with a phase runner: https://youtu.be/Wc8OJtFRUng 1st question: Do you have any idea if it would be possible to use that 350Ohm gauge sensor on the bionX axcle to make a Pedelec conform e-bike with a BionX hub motor an...
by Cephalotus
Dec 12 2019 5:22am
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

It takes about 11 weeks to do 500 cycles. My intention is to finish testing at latest 700 cycles. I suppose for most of community will be 700 cycles data informative enough and testing another cells will be more interesting. Moreover, we haven´t enough time frame for long term testing. It is your t...
by Cephalotus
Dec 11 2019 1:26pm
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

Thanks a lot for the updates!

It doesn't take so much time to do 500 cycles, so I hope you will continue to 1.000 cyles and maybe even more in case of cells that show very little aging up to that...

LG MG36 shows amazing performance so far.
by Cephalotus
Dec 03 2019 2:42pm
Forum: General Discussion
Topic: Raised Bed Gardening - Cement Blocks > Greenhouse!
Replies: 259
Views: 33603

Re: Raised Bed Gardening - Cement Blocks > Greenhouse!

Living at 51° North in Germany December days are short, sun is rare and shadows are very long. Our main winter problem is the darkness and lack of irradiation, not so much the cold, if you have cold tolerant plants. this is what I grow in my small cold frame in winter. Sheeting is Plexiglas Alltop (...
by Cephalotus
Dec 01 2019 4:01am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 342
Views: 53204

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

Yepp, I have seen that solar velomobile before. An efficient velomobile needs around 200W for riding at 45km/h. Maybe 300W if you include the solar generator incl. mounting. A 500W solar generator is able to produce 2500Wh on a okayish day, so in theory you are able to use 250W battery power for 10 ...
by Cephalotus
Nov 30 2019 9:46am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 249
Views: 34174

Re: Around the world on a solar ebike

Overall, the decreases in peak daily solar watts seem too high to me to be explained by panel degradation alone. I remember Justin commenting on the fact that it was very rainy during the second half of the trip. If it was overcast all day, the daily peak would be much lower. Maybe that's part of i...
by Cephalotus
Nov 30 2019 8:55am
Forum: E-Bike Build Threads / Photos & Video
Topic: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar
Replies: 342
Views: 53204

Re: My Sun Trip Bike, Back to Back Tandem Trike with Rowing Generator, Pedals, +Solar

.... what does the data say about strategies for winning The Sun Trip 2020 ? If you manage to ride 200km/day on average you will be in the top 10, maybe top 5, if you manage to ride 250km/day you are in the range of the winner, so someone who rides 300km/day should be able to win. The TCR Europe 20...
by Cephalotus
Nov 26 2019 6:47am
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

Another testing fixture arrived this week, so from Friday is 30Q already running on fifth channel at the same parameters. MJ1 will start next week completing my max testing capacity 6 channels. Other candidates are 35E, VTC6, M29, HG2, 50E, ….. You should do what you prefer. Ist is your setup and y...
by Cephalotus
Nov 26 2019 6:36am
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

New data, PF, M36 and GA 350 cycles, 29E 300 cycles. We are slowly approaching to 500 cycles, which rises question to Pajda : should we continue beyond this target or start to cycle new cells instead ? Does cycling beyond 500 cycles provide information interesting enough to give reasons for such lo...
by Cephalotus
Nov 25 2019 8:28pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 249
Views: 34174

Re: Around the world on a solar ebike

This is electroluminescence, right? Driving current trough the panel in reverse causes each cell to emit infrared light which is picked up by the Sony camera. The magnet is a trick for disabling the IR filter in the camera. The cracks in your image are micro-cracks which are otherwise invisible to ...
by Cephalotus
Nov 25 2019 11:22am
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 249
Views: 34174

Re: Around the world on a solar ebike

This is what I got from China. It is far from being the cheapest stuff (ETFE lamination at ca. 3€/W) and it still is able to produce the 50W it has been advertised. So if you notice that your cheap semi flexible panels already produce less power than advertised their cells will look even worse than ...
by Cephalotus
Nov 22 2019 7:52am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

The USA has a radical new bill that is moving through congress. Studied by Columbia University, HR763 would tax Carbon right where it comes out of the ground domestically (it ideally needs to be a world level law eventually but these types of world level things are still almost impossible). Since i...
by Cephalotus
Nov 20 2019 6:46pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

So you are blaming the remaining 80% of Germany's energy that it still produces via fossil Carbon, on everyone else that imports it's finished products? No I don't. Germany now is emitting around 800Mt of CO2e/year. If you take import and export of goods into account that number stays more or less ...
by Cephalotus
Nov 20 2019 6:44pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Cephalotus you aren't rich, you are describing lower middle income for a developed nation. There is no reason that 2 billion people couldn't live entirely at that standard or better. But not if the top 1% are allowed not only 90% of the wealth but also 90% of the political influence as they are now...
by Cephalotus
Nov 20 2019 4:34am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

? ..do they understand the role of Carbon in Cement and Steel making ? . Steel can made with green hydrogen, which is exactly what Sweden plans to to with ALL of its steel production, see project Hydrit. Cement can also be produced with greatly reduced CO2 emissions, Heidelberg cement is working on...
by Cephalotus
Nov 20 2019 4:15am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

I have to agree with hillhater on this one the problem is so widespread and ingrained we fool ourselfs that it can be fixed in 20 years or so. 50 years ago people believed that it was impossible to feed 8 billion people. Simply impossible. Yet look at where we are now. There are more obese people i...
by Cephalotus
Nov 19 2019 5:38pm
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

Some people on the Pedelec forum mentioned soldering as a root cause of the issue. Fortunately you read German :D ... wasn't sure if he was being a litte facetious (single cell), so brought up the subject of vaping... Can be my lack of expressing myself in English. What I wanted to tell you is that...
by Cephalotus
Nov 19 2019 5:34pm
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

docware wrote:
Nov 19 2019 12:27pm
Some people on the Pedelec forum mentioned soldering as a root cause of the issue.
This was the guess at the beginning that they don't like soldering.

But later spot welded packs had shown the exact similar behavior.
by Cephalotus
Nov 19 2019 12:08pm
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

It seems that 9 out of 10 packs fail after just some months of use, because single cells of 30Qs do develop heavy self discharging Can we trust German Pedelecforum single cell vaper/pedalers? That's what happens when using 9 out of 10 30Q packs for unhealthy single cell 30Q use :wink: Maybe those e...
by Cephalotus
Nov 19 2019 11:58am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5710
Views: 308151

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Everyone could live in comfort if two conditions were met: <2 billion people worldwide. No billionaires, period. The world would do fine with 2 billion Indians, maybe with 2 billion Europeans, but NOT with 2 billion US Americans. And it's NOT the viw billionaires, ist hundreds of millions of Joe av...
by Cephalotus
Nov 19 2019 9:46am
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 381
Views: 38006

Re: Li-ion cells cycle ageing

Samsung INR18650-30Q 3000mAh - 15A (NCM :thumb:) ... if and when tested by docware the Samsung 30Q should also have a lower DCIR than either PanasonicPF or SanyoGA (NCA). Cycle tests are only half of the story. In the German Pedelecforum the 30Q now has a very bad reputation for larger packs. It se...