Search found 3357 matches

by jonescg
Mar 20 2019 8:35pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1258
Views: 179707

Re: jonescg's NEW electric racebike BUILD thread!

Well the 800 V to 48 V unit costs $800 or so. And then the 48 to 12 is only about $80. The first stage is capable of 1.3 kW, but the second stage is only good for 320 W... I guess you can parallel several of them if you needed more power, but 30 amps at 12 V is heaps for a bike.
by jonescg
Mar 20 2019 8:27pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Indeed the cheapest watt is the one you don't need. The way homes are built in Australia is an embarrassment. For an extra 4% we can have draught-proof, well insulated homes which consume little heating energy through winder and through good architecture, stay cool through summer. But we are lazy, a...
by jonescg
Mar 19 2019 10:29pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1258
Views: 179707

Re: jonescg's NEW electric racebike BUILD thread!

Frank I was looking at Vicor products and there are some eminently capable units - however anything over 410 V DC input only seems to output 48 V or more. I assume it's possible to parallel the outputs of two modules - one on each half of the traction pack? Also, I presume these guys aren't current ...
by jonescg
Mar 19 2019 12:01am
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1258
Views: 179707

Re: jonescg's NEW electric racebike BUILD thread!

Sevcon do a 1.5 kW DC/DC converter which takes up to 800 V DC and steps it down to 12 V. But that's about 4-5 times more powerful than it needs to be.
hv-dcdc-august-2016.pdf
(1000.6 KiB) Downloaded 7 times
by jonescg
Mar 18 2019 7:48am
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1258
Views: 179707

Re: jonescg's NEW electric racebike BUILD thread!

Is that the new "down under" math, Chris? 32 * 2 = 55, lol! :wink: BTW, what are you using for a DC/DC converter? I haven't found much available that works with HV packs. Haha - typo. I must have tried to put 22 km there and got 32 km. Either way, the 55 km bit is correct :) I don't have a DC/DC co...
by jonescg
Mar 18 2019 1:25am
Forum: Items for Sale - New
Topic: Assembled Hi-Power LiPo battery packs - any interest?
Replies: 547
Views: 94199

Re: Assembled Hi-Power LiPo battery packs - any interest?

I figure it's about time I shared the Prelude battery pack. This battery pack sits in the fuel tank space and has six 12s10p liquid-cooled modules in series. The conversion needs two more modules up the front to make a standard 355 V nominal pack with 24 kWh of useful energy. This rear battery store...
by jonescg
Mar 18 2019 1:10am
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1258
Views: 179707

Re: jonescg's NEW electric racebike BUILD thread!

I haven't posted here for a while, but I thought I would mention the range on Voltron. On Sunday the AEVA was at the Mundaring Blue Sky Festival - a street market with various offerings. Since this was about 32 km away in the hills, I decided to get a temporary permit and ride it to the fair. I was ...
by jonescg
Mar 17 2019 7:14pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Because the Hunter Valley looks similarly pristine?

Image
by jonescg
Mar 17 2019 6:25am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Now, I'm no geologist or cartographer, but on that google maps screenshot, the wind farm seems to occupy a hilly outcrop that doesn't look like it was even suitable for agriculture, let alone building on. But wind turbines work well on elevated areas like this. So, how can it be argued that wind tu...
by jonescg
Mar 16 2019 8:55am
Forum: E-vents
Topic: Electrikhana in Australia!
Replies: 3
Views: 225

Re: Electrikhana in Australia!

AussieRider wrote:
Mar 16 2019 7:21am
Surely the stealthiest e-bike job this side of the Tour De France!
:lol: :thumb:
by jonescg
Mar 14 2019 8:38pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: MotoE paddock fire - all bikes destroyed!
Replies: 13
Views: 415

Re: MotoE garage fire

liveforphysics wrote:
Mar 14 2019 5:53pm
Evidently they were only running 10sec behind motoGP laptimes, and this was the first time they had practiced the bikes on that track. That's so incredible it should be making history over the news of the fire, but the media is what it is.

Man bites dog stuff, really.
by jonescg
Mar 13 2019 7:28pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

.... Snowtown occupies 0.29 km2 and has a nameplate capacity of 370 MW. So a 1 GW wind farm will occupy about 1 km2. It's got a solid 40% CF, so lets be generous and call it 3 km2. And also states that the "swept area" of the farms turbines is ...0.29 km2 !!! :shock: Coincidence ?? Yeah that's what...
by jonescg
Mar 11 2019 10:54pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

A friend had a similar problem - turned out to be a corroded MC4 connector. Easy fix. Oh - Beastie, you might want to update your stupid meme. Most windfarms have better power density than that. Snowtown occupies 0.29 km2 and has a nameplate capacity of 370 MW. So a 1 GW wind farm will occupy about ...
by jonescg
Mar 11 2019 10:43pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Yes I agree there is more to it. I should also point out that my panels are used panels (about 6 years old) so they won't be delivering as much as brand new panels.
by jonescg
Mar 11 2019 9:40pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

I'd say most of that is due to the angle of the panels - 30 degrees is steep for that latitude. It will probably produce better power in winter (which is when you need it anyway).
by jonescg
Mar 11 2019 8:51am
Forum: General Discussion
Topic: la Nina rears her ugly head
Replies: 1215
Views: 53548

Re: la Nina rears her ugly head

First time poster in this thread - El Nino in Australia = drought. La Nina in Australia = rain. The Southern Oscillation Index, or SOI is our best long-range predictor for rainfall on the east coast - it looks at mean atmospheric pressure differences between Tahiti and Darwin. And we're well and tru...
by jonescg
Mar 11 2019 5:27am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

You tell me... 12 panels, facing north (Southern hemiphere) 25/30 deg angle. Nominal (nameplate) capacity 3.1 kW Output 6.5-7.0 kWh per day max,..mid summer, clear bright 100% sun exposure. Max power at noon, 1.4 kW :( 8) Sounds about right - the 25/30 degree angle is ideal for winter production. I...
by jonescg
Mar 10 2019 8:29am
Forum: E-Vehicles General Discussion
Topic: Reflections echo reflexions
Replies: 16
Views: 262

Re: Reflections echo reflexions

SlowCo wrote:
Mar 10 2019 4:12am
:?
Funny how this thread derailed immediately to discus the use of a "sprotor" instead of focusing on the really interesting parts...
I want to learn more about the design of the frames, which motors, controllers and battery packs are used. :wink:
Ask Farfle ;)
by jonescg
Mar 03 2019 1:51am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

"How will we ever pay for all this?" From taxes. The same way we pay for everything of public significance. Like the military. In fact if you took money out of military spending and put it towards securing low emission, import-free energy (solar, wind, hydro, nuclear) you won't have as many enemies,...
by jonescg
Mar 02 2019 8:25am
Forum: E-Vehicles General Discussion
Topic: New Nissan Leaf.. 50kw more power and 62kwhr battery
Replies: 28
Views: 1195

Re: New Nissan Leaf.. 50kw more power and 62kwhr battery

Punx0r wrote:
Mar 02 2019 5:04am
Seems like an opportunity for a third party to offer aftetlrmarket refurbished packs...
That's what I'm doing this autumn.
Leaf pack enclosure.jpg
Hope to fit 35 kWh into it without confusing the computers too much.
by jonescg
Mar 01 2019 6:24am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3521
Views: 124870

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Always maintained the best thing you can do by the environment is walk places.
by jonescg
Mar 01 2019 12:04am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 739
Views: 45832

Re: Tesla Model 3

Where did you hear this? I don't think they would shut down all sales stores that doesn't make sense. Some people need to see a real car in person first. https://www.tesla.com/en_AU/blog/35000-tesla-model-3-available-now?redirect=no "To achieve these prices while remaining financially sustainable, ...
by jonescg
Feb 28 2019 7:56pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 739
Views: 45832

Re: Tesla Model 3

Yeah apparently they are going to shut down all bricks and mortar shopfronts and go completely online. That will save a fortune in costs and allow them to get the Model 3 down to $35k. It's a bit of a risky move - the car itself is clearly still costing them that much to make, so the margins will be...
by jonescg
Feb 28 2019 7:34am
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 318
Views: 27072

Re: Aussie EV Autocross Special

I always figure you've got to be going pretty hard to get a good car racing photo. With motorcycles you can look well 'ard while barely getting a knee down :)

Seems to be running very reliably for you now?