Search found 9111 matches

by Hillhater
Feb 21 2019 11:46pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3357
Views: 116419

Re: Wind and Solar vs Coal, Gasoline, Nuclear

What happened when i bought a house with Solar already installed.. What happened to pedant in you ? You didn't buy squat with solar installed, somebody else did :) Second, I am actually a SunRun customer with 2kW array (I have another 6kW array that I own in another location). As such I fail to see...
by Hillhater
Feb 20 2019 5:12am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3357
Views: 116419

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Did you catch the point that they are one of the biggest players in the solar market, particularly in California, with busines forcast to grow 30% this year Eventually, Sunrun’s patience paid off. .... .... By early 2018 the company was deploying more residential megawatts than any of its rivals. It...
by Hillhater
Feb 19 2019 11:05pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3357
Views: 116419

Re: Wind and Solar vs Coal, Gasoline, Nuclear

What happened when i bought a house with Solar already installed.. https://www.bloomberg.com/graphics/2019-sunrun-solar-panels/ ............just before we entered escrow, we learned the solar array hadn’t belonged to (the owner.) It was, in the language of the industry, a third-party-owner, or TPO, ...
by Hillhater
Feb 19 2019 7:42pm
Forum: General Discussion
Topic: Clip - improved 3D printing technology?
Replies: 8
Views: 115

Re: Clip - improved 3D printing technology?

Improved speed (Maybe 1000x could be possible :shock: ). Is obviously huge.. But to me, its the ability to use a wider range of materials, and the resulting "monolithic" construction, (absence of layering) , that are the most interesting advances. Also, its good to see a real practical demonstration...
by Hillhater
Feb 19 2019 5:16pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

Yes , Mahindra ( and most other teams). have modified their powertrains with the seasons . This season (2018/19) has seen a big change in rules and drivetrain specs (more power, etc). Several teams run single speed , and others have developed refined dual speed, and " multi" speed transmissions. The...
by Hillhater
Feb 19 2019 2:15am
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

So...
If the Two motors had the same torque and rpm range, the one with the 8:1 ratio would accellerate faster ( but with a lower top speed.
And if you gave it a 2 speed transmission . 8:1 and say 3:1..
..it would have faster acceleration, AND a higher top speed .. than the 4:1 ratio.. ??
by Hillhater
Feb 18 2019 10:54pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

....... The biggest appeal of EV's in racing is no transmission. Interruptions in torque delivery are not acceptable. .... .....from the chief engineer at one of the FE race teams.... (An old quote but still applicable..) ...“Simply put, using a gearbox helps you to extract the maximum efficiency p...
by Hillhater
Feb 18 2019 6:53pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3357
Views: 116419

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Here is something for you to scrutinize in your usual fashion : https://electrek.co/2019/02/18/tesla-big-battery-pay-for-itself/ Yes, we have been there and done that previously...nothing new there ! The battery is making much money (from consumers) for providing sevices (FCAS) , ..that were not ne...
by Hillhater
Feb 18 2019 5:41pm
Forum: Food and Drink
Topic: AB InBev buys Corona
Replies: 6
Views: 1455

Re: AB InBev buys Corona

The power of the human mind !!.... Personal story here... When i read the title.."Inbev buys Corona" I suddenly had a familiar taste in my mouth (psychological ?). No, not some random weak beer, but a flashback to something much more distant,..to my childhood even. Dispite having spent much of my wo...
by Hillhater
Feb 18 2019 5:21pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3357
Views: 116419

Re: Wind and Solar vs Coal, Gasoline, Nuclear

I see you have never watched Australia's ABC channel.. (which is 100% Public funded) I don't have any subscription for TV, and pretty sure Australian ABC isn't broadcasting in Oregon :) And yeah, I like your definition better - public funded, as opposed to government. The Govmnt controls the public...
by Hillhater
Feb 18 2019 5:17pm
Forum: Battery Technology
Topic: FIX for non trimmable Li-Ion charger that slightly overcharges eSkate
Replies: 7
Views: 122

Re: FIX for non trimmable Li-Ion charger that slightly overcharges eSkate

With that "Cocktail" of mixed cells, i would be more worried about getting an even charge on each 2p pair when charging. Im guessing the charger is not a balancing charger ? Might i suggest you invest $25 in a cheap RC balance charger that you can easily adjust the settings on , and ensure those mix...
by Hillhater
Feb 18 2019 4:56pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3357
Views: 116419

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Odd ? ..this is what i read... It is a property of a religion-prone mind to seek out a single ultimate source of truth and reject any alternatives no matter how legitimate. I found MY Jesus, and now everything else is just heresy 😀 He had me at "leftist ABC gov funded broadcast media" I see you have...
by Hillhater
Feb 18 2019 4:45pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

...... Perhaps the build budget is better spent on higher-amp batteries and a slightly larger motor. Possibly for an Ebike,..... though even there, more and more are going with the geared mid drive ? ...but not so practical for a mainstream EV, where i suspect those items have already been the subj...
by Hillhater
Feb 18 2019 6:39am
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

SlowCo wrote:
Feb 18 2019 4:26am
As far as I understand it, if you want better acceleration and speed it is better to put the extra complexity, cost and weight in a bigger/stronger electric motor, controller and battery then in a gearbox.
Go tell the EV drag racers.
by Hillhater
Feb 18 2019 2:07am
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

Actually its obvious the i3 would be a faster car ..better accereration and higher top speed, even with a 2 speed gearbox. Every EV has a reduction transmission between the motor and the roadwheels, and that reduction ratio is carefully chosen to suit the motor characteristics (torque, rpm , etc) , ...
by Hillhater
Feb 17 2019 4:54pm
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

........ Aren't middrive's more efficient than hub drives though through hills and mountains and from a standstill? They can be in some situations depending on the terrain and riding style. But ultimately, they will "waste" some power due to extra friction in the chain and gear train compared to th...
by Hillhater
Feb 17 2019 2:35am
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 35
Views: 625

Re: ICE vs Electric Motor Transmissions

Arguably, Ebikes are a classic example of the effects of gearing on equivalent wattage motors Hub motors are cheap, reliable, simple and efficient.. But the mid drive Ebikes, which benefit from both higher rpm motors and multiple gear ratios, can give better accelleration and top speeds, but general...
by Hillhater
Feb 16 2019 1:17am
Forum: Battery Technology
Topic: Samsung 33J - a 21700 Li-ion battery designed for Tesla
Replies: 7
Views: 257

Re: Samsung 33J - a 21700 Li-ion battery designed for Tesla

Ahh ! , so for the powerwall they are prioritising cycle life at the expence of energy density.
Now that can make sense for a static pack. :bigthumb:
But, it also highlights the compromises that are forced by the limits of current Li technology ! :| :?
by Hillhater
Feb 15 2019 7:13am
Forum: Battery Technology
Topic: Samsung 33J - a 21700 Li-ion battery designed for Tesla
Replies: 7
Views: 257

Re: Samsung 33J - a 21700 Li-ion battery designed for Tesla

Something doesnt seem to sound right with this... Why would Tesla want this cell over their existing 4.8 Ah cell , or even the 3.1-3.3Ah , 18650's they already have access to. ? This is bigger and heavier than the 18650, with no advantage in output, and Tesla have never had an issue with cycle life....
by Hillhater
Feb 15 2019 6:20am
Forum: Battery Technology
Topic: Video, BMW cells being made
Replies: 1
Views: 113

Re: Video, BMW cells being made

I believe that is quite an old video of a pilot/test cell line, nor a production line.
by Hillhater
Feb 14 2019 10:55pm
Forum: Battery Technology
Topic: Where to buy cheap Li-pol batteries instead of Multistar?
Replies: 14
Views: 421

Re: Where to buy cheap Li-pol batteries instead of Multistar?

Bad info. 3.2v will get you more than 90% out of a 25R and most RC LiPo still have ~20% in them @ 3.6v. For the rest, there's flux weakening. The real reason to use RC lipo is for high C rate. ??..you may want to check and rethink that ! https://lygte-info.dk/review/batteries2012/Samsung%20INR18650...
by Hillhater
Feb 14 2019 6:13pm
Forum: Battery Technology
Topic: Where to buy cheap Li-pol batteries instead of Multistar?
Replies: 14
Views: 421

Re: Where to buy cheap Li-pol batteries instead of Multistar?

Multistar gets the crap beaten out of it by good 18650 packs in terms of Wh / kg, $ / kwh, and does not even have the power density to make up for it. Li-Ion (18650/21700) have to be drawn down to < 3v to get the claimed capacity, That is a 25% voltage drop across the capacity range...and if you do...
by Hillhater
Feb 13 2019 5:15pm
Forum: Battery Technology
Topic: Where to buy cheap Li-pol batteries instead of Multistar?
Replies: 14
Views: 421

Re: Where to buy cheap Li-pol batteries instead of Multistar?

Possibly not available worldwide, ..but Hobby King currently have 6s, 10Ah , Multistars on sale for usd$70.0
by Hillhater
Feb 13 2019 4:37pm
Forum: General Discussion
Topic: I Sure had Build Fever as a kid
Replies: 2
Views: 133

Re: I Sure had Build Fever as a kid

" Just Name the Training Spaceship "...
I wonder what the winning name was ?
..... Any bets it was. "Enterprise "... :lol:
( see the link ?...compertition,.... Enter,....Prise,. ! and of course the historic result .
by Hillhater
Feb 13 2019 4:31pm
Forum: Electric Watercraft
Topic: Husky conversion
Replies: 2
Views: 121

Re: Husky conversion

Excellent conversion, very skilfully done.
You are a very talented welder.
What motor did you use ?
I suspect the boat will be a classic wooden design ?