Search found 4253 matches

by Punx0r
Nov 19 2018 9:20am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Musk teared up when she told him electricity is so expensive there (Australia) that some people were forced to choose between paying for enough AC to survive, and paying for food. The cost of electricity in Australia varies quite a lot from state to state, with SA being the most expensive (a situat...
by Punx0r
Nov 19 2018 3:43am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Carbon pricing around the world: https://ourworldindata.org/carbon-pricing-popular The High-Level Commission on Carbon Prices (2017) estimates that achieving the goals of the Paris Agreement requires a carbon price of $40-$80/tCO2 by 2020, rising to $50-$100/tCO2 by 2030 (when combined appropriately...
by Punx0r
Nov 19 2018 3:21am
Forum: Battery Technology
Topic: Best battery Deals on 11 11 Chinese sale!?
Replies: 8
Views: 442

Re: Best battery Deals on 11 11 Chinese sale!?

Not so great on cycle life though :(
by Punx0r
Nov 19 2018 3:17am
Forum: Motor Technology
Topic: Brushless motor efficiency
Replies: 8
Views: 179

Re: Brushless motor efficiency

You should be able to achieve the same on most controllers using an adjustable current limit? If you set it at, say, 300A then you don't have to worry about PWM or settings at different speeds. That some controllers will allow 0.5 or 1.0second over-current before limiting can provide a usefully burs...
by Punx0r
Nov 18 2018 5:10am
Forum: General Discussion
Topic: Emergency Disconnect Switch
Replies: 4
Views: 120

Re: Emergency Disconnect Switch

dustNbone wrote:
Nov 15 2018 7:25pm
Or the good ol' kill button next to your thumb, it's what all my dirtbikes have always had.
This is also a good idea :)
by Punx0r
Nov 17 2018 6:37pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Alongside the U.S. midterm Congressional elections last week, there were some interesting other issues voted on by the public: * Washington state rejected a proposed carbon tax of $15 per tonne. This would have been the first of its kind in the U.S. and would add approx. $5/MWh to the cost of electr...
by Punx0r
Nov 17 2018 2:17pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

As I said...not trivial discussion point! Sure, if you define dispatchable in a way that best reflects the characteristics of a coal plant then, yes, it does make *some* forms of RE look undispatchable. RE technologies like hydro and geothermal blow it into the weeds. Your inability to grasp that so...
by Punx0r
Nov 17 2018 6:38am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

A classic example of arguing the trivial details, ! But.... From that very Wiki page... ....... Dispatchable generators can be turned on or off, or can adjust their power output according to an order.[1] This is in contrast with non-dispatchable renewable energy sources such as wind power and solar...
by Punx0r
Nov 16 2018 6:32am
Forum: Battery Technology
Topic: Best battery Deals on 11 11 Chinese sale!?
Replies: 8
Views: 442

Re: Best battery Deals on 11 11 Chinese sale!?

nkon are great if you're in Europe, but delivery can be a bit long/expensive for those outside.

I'm sure there's an equivalent supplier of genuine 18650 cells in the U.S. but I can't remember their name...
by Punx0r
Nov 16 2018 3:47am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Just to be clear, before I read a post I check to see if there are any URLs... I kind of rarely read or depending on the poster have a basic glance at the posts here who don't provide URLs for their comments/posts because they tend to be just manipulated garbage Funny enough, I usually (at most) sk...
by Punx0r
Nov 15 2018 7:30pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

That is my understanding, too. So you are correct: if a plant is shut down early in its expected life, the decommissioning will be somewhat less as there will be less contaminated equipment to dispose of.
by Punx0r
Nov 15 2018 5:56pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

decommissioning costs are the same as if it had operated for ~50 years Probably not. A lot more radioactive waste material would be produced during that time, making decom more costly. Are we talking contaminanted plant or spent fuel waste? I concede the former would be true if more years of use = ...
by Punx0r
Nov 15 2018 5:46pm
Forum: General Discussion
Topic: Emergency Disconnect Switch
Replies: 4
Views: 120

Re: Emergency Disconnect Switch

They tend to be big and ugly because you needs a lot of switch to carry and, when needed, break the current of something like a motorcycle. Many woud argue that, unlike a brushed motor, if you have a brushless system you don't need one, as long ss you have a keyswitch and brake cutouts in case the t...
by Punx0r
Nov 15 2018 4:55am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

... You know that neither coal or nuclear plants provide 100% availability, right (check the reported numbers yourself)? They require shutting down for maintenance & repairs and they also break down unexpectedly. ... ...and i assume you know that the same will apply to wind and solar installations ...
by Punx0r
Nov 15 2018 4:53am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Lifetime average capacity factor of nuclear is over 90% for 60 years. I stand corrected. Global nuclear capacity factor is running at 81% for 2017. OK. Fading back toward 70%. Thanks for digging up this info, it's quite interesting. Bill raises a good point about exclusion of failed plants skewing ...
by Punx0r
Nov 14 2018 5:00pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Coca-Cola or KFC/McDonalds is NOT allowed to claim the kilojoules/energy in their food in terms of how they WISH or HOPE it to be, that would be crazy Right. So if a Fillet-o-crap burger is listed as having 300 kcal that must be available at any time and continuously? So if I want it at 3am when th...
by Punx0r
Nov 12 2018 8:34am
Forum: Battery Technology
Topic: Best battery Deals on 11 11 Chinese sale!?
Replies: 8
Views: 442

Re: Best battery Deals on 11 11 Chinese sale!?

Random cells from China? Caveat Emptor!
by Punx0r
Nov 12 2018 8:27am
Forum: Battery Technology
Topic: Sanyo 25Ah nmc Voltage Drop
Replies: 42
Views: 565

Re: Sanyo 25Ah nmc Voltage Drop

Some say it may be my brushes advancement. @ DIYElectricCar they say im loosing 80% torque if its 30% Advanced. I was going to suggest the DIYElectricCar forum as those guys are much more experienced with large brushed motors. Looking at the news photos above I'd guess your motor is wired in a seri...
by Punx0r
Nov 12 2018 4:48am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

It does hep make the argument that not emitting the CO2 in the first place is probably the easiest option. Still, if CO2 does need removing from the atmosphere and a source of industrial CO2 is needed then it could make sense. Especially if it can operate as a scheduled or dispatchable load for thos...
by Punx0r
Nov 09 2018 3:31am
Forum: Battery Technology
Topic: Sanyo 25Ah nmc Voltage Drop
Replies: 42
Views: 565

Re: Sanyo 25Ah nmc Voltage Drop

There's definitely something weird going on as it looks like an apples-to-apples comparison between your karts but he is clearly making way more torque at the axle than you despite you have a bit more motor current and shorter gearing :? It would be great if one of the guys knowledgeable on non-PM b...
by Punx0r
Nov 08 2018 6:17pm
Forum: Battery Technology
Topic: Sanyo 25Ah nmc Voltage Drop
Replies: 42
Views: 565

Re: Sanyo 25Ah nmc Voltage Drop

3p... The OP is delivering 600A to his motor on a 1P VW e-up pack The other guy is delivering 500A to his identical motor from (according to Youtube comments) a Leaf & VW pack 600A @ 1P on the e-up cells is 24C which is leaning pretty hard on them but what is the other guy's pack like? I can't tell...
by Punx0r
Nov 08 2018 6:05pm
Forum: Battery Technology
Topic: Sanyo 25Ah nmc Voltage Drop
Replies: 42
Views: 565

Re: Sanyo 25Ah nmc Voltage Drop

Wow, that's some torque he has! :shock: Neptronix, I think this the motor both karts have: http://vi.vipr.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=350858345897&t=1408739782000&tid=223353071&seller=bullseyeindustrialsales&excSoj=1&excTrk=1&lsite=0&ittenable=false&domain=ebay.com&descgauge=1&...
by Punx0r
Nov 08 2018 11:55am
Forum: Battery Technology
Topic: Sanyo 25Ah nmc Voltage Drop
Replies: 42
Views: 565

Re: Sanyo 25Ah nmc Voltage Drop

So you both have the same motor (series wound) His peak (motor, not battery!) current during burnout is measured as ~500A, yours is measured as ~600A? You have varied your gear ratio from 2:1 to 1:1 while his is 1.16:1? If motor is the same and motor current is the same (or better) then your motor t...
by Punx0r
Nov 08 2018 8:48am
Forum: E-Vehicles General Discussion
Topic: What happened to Nikola One Semi?
Replies: 35
Views: 585

Re: What happened to Nikola One Semi?

Electric garbage trucks are a thing - just tap it into google :)
by Punx0r
Nov 06 2018 8:07am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 2655
Views: 88898

Re: Wind and Solar vs Coal, Gasoline, Nuclear

"The kingdom is considering building 17.6 gigawatts (GW) of nuclear capacity by 2032, the equivalent of about 17 reactors, making it one of the biggest projects globally." It will be interesting to see which reactor design they choose. It could save the AP1000 if they choose to go that way. They wi...