Search found 311 matches

by JackFlorey
Jan 22 2021 11:20pm
Forum: Alternative Energy
Topic: Generating Power 24/7 by using Tides
Replies: 31
Views: 604

Re: Generating Power 24/7 by using Tides

As for the piled metal walls, think ship yards, the Panama Canal, the Suez Canal. Those are examples of concrete walls backed by earth. It is a common misconception that in such cases the concrete carry the loads. People think the same thing of roads; they think the asphalt, concrete etc carries th...
by JackFlorey
Jan 22 2021 12:42pm
Forum: General Discussion
Topic: Why not heat my house w heat lamps?
Replies: 23
Views: 387

Re: Why not heat my house w heat lamps?

Hummina Shadeeba wrote:
Jan 22 2021 2:04am
N get light too.
1) Electric heat is usually the most expensive heat there is and then . . .
2) Summer comes along.
by JackFlorey
Jan 18 2021 12:11am
Forum: Alternative Energy
Topic: Generating Power 24/7 by using Tides
Replies: 31
Views: 604

Re: Generating Power 24/7 by using Tides

The video claims it and that's what is mentioned in the video There are a lot of things on Youtube. Magnet motors are fun; they generate energy from magnetism and give you free energy forever! If you believe the video, of course. but which experiment you suggest to prove it false? I can perform it,...
by JackFlorey
Jan 15 2021 4:34pm
Forum: Alternative Energy
Topic: Generating Power 24/7 by using Tides
Replies: 31
Views: 604

Re: Generating Power 24/7 by using Tides

ONLY If it is continuous wall, without sections. When the wall is divided into sections, this doesn't apply. If what you claim is true, then you could divide ANY wall, dam, berm or levee into tiny sections and it would become much, much stronger and easier to build to withstand the same force. Thir...
by JackFlorey
Jan 14 2021 4:57pm
Forum: Alternative Energy
Topic: Generating Power 24/7 by using Tides
Replies: 31
Views: 604

Re: Generating Power 24/7 by using Tides

Well, here is another experiment. Place a pressure measuring device in a tank on side wall at the bottom. Measure the pressure or force at that point. Pressure is constant all across the wall in that horizontal line. Let's say pressure you measure was 1000 pascal. So lets say the wall is 100 unit l...
by JackFlorey
Jan 14 2021 2:08pm
Forum: Alternative Energy
Topic: Generating Power 24/7 by using Tides
Replies: 31
Views: 604

Re: Generating Power 24/7 by using Tides

I did little experiment on this. Face your Palm facing you. Make all fingers straight. Push any finger using other hand finger (you can use any finger). Do you see force transfer from one finger to other? Now take pen, place it horizontally across fingers, push it against the fingers. Do you see on...
by JackFlorey
Jan 13 2021 10:18pm
Forum: Alternative Energy
Topic: Generating Power 24/7 by using Tides
Replies: 31
Views: 604

Re: Generating Power 24/7 by using Tides

That design don't need that thick wall. That's the principle of design. Divide and Conquer kind of philosophy. If it is continuous wall, then your statement is valid The Thames barrier is not a continuous wall, either. It's made of 10 separate gates. If you partition wall, the forces are not propag...
by JackFlorey
Jan 13 2021 1:46pm
Forum: Alternative Energy
Topic: Generating Power 24/7 by using Tides
Replies: 31
Views: 604

Re: Generating Power 24/7 by using Tides

Generator wrote:
Jan 13 2021 10:52am
Can't that pile wall be designed thick enough to withstand against the load?
Sure. But that is going to be one very thick and very expensive wall. On the Thames, a 1700 foot wall to hold back a 2 meter tide cost half a billion dollars - and took ten years to build.
by JackFlorey
Dec 30 2020 2:03am
Forum: E-Bike General Discussion
Topic: Very Impressed by fast motor winding with gear reduction vs. Slow motor Winding without gear reduction
Replies: 8
Views: 442

Re: Very Impressed by fast motor winding with gear reduction vs. Slow motor Winding without gear reduction

Chalo wrote:
Dec 29 2020 11:58pm
Sure!
29" wheel up front, 12" in the back. Much easier to get the power you need out of a small motor, no endos - and think about how many questions you'll get!
by JackFlorey
Dec 29 2020 10:39pm
Forum: EV Business World
Topic: Happy New Year Tesla ..!
Replies: 1
Views: 112

Re: Happy New Year Tesla ..!

Hillhater wrote:
Dec 29 2020 9:06pm
Starting 2021 with a dose of reality from Down Under...
I love watching the Tesla shorts get burned again . . . and again . . . and again . . . .
by JackFlorey
Dec 29 2020 7:33pm
Forum: Alternative Energy
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6417
Views: 364761

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Ref:-... False Alarm: How Climate Change Panic, Costs Us Trillions, Hurts the Poor, and Fails to Fix the Planet Meanwhile climate change is costing trillions every year - and that number will keep increasing. Climate change deniers are like people who avoid going to the doctor for that big bleeding...
by JackFlorey
Dec 29 2020 3:17pm
Forum: E-Bike General Discussion
Topic: Very Impressed by fast motor winding with gear reduction vs. Slow motor Winding without gear reduction
Replies: 8
Views: 442

Re: Very Impressed by fast motor winding with gear reduction vs. Slow motor Winding without gear reduction

Chalo wrote:
Dec 29 2020 3:16pm
Sure, but the benefits trade off against additional cost, weight, wear, maintenance, space onboard, noise, filth, pinch hazard, and points of failure when you add an extra reduction stage.
Or just go with a wheel that's half the size . . . .
by JackFlorey
Dec 27 2020 2:15pm
Forum: General Discussion
Topic: Why "It's a Wonderful Life" is the worst Christmas movie
Replies: 12
Views: 443

Re: Why "It's a Wonderful Life" is the worst Christmas movie

Matt Gruber wrote:
Dec 27 2020 4:32am
I don't even watch movies anymore.
So you don't watch them, you just complain about them? Fascinating!
by JackFlorey
Dec 22 2020 10:46am
Forum: Electric Aircraft
Topic: Flying Caravan ??
Replies: 12
Views: 321

Re: Flying Caravan ??

I'd feel a bit safer with a small backup redundant battery for a safe emergency powered landing. As with ebikes, you are always better off making your main battery a little bigger, rather than adding another specialized battery. Having an "emergency" level of discharge is common for EV's ...
by JackFlorey
Dec 21 2020 11:06pm
Forum: Alternative Energy
Topic: solar water distillation
Replies: 31
Views: 608

Re: solar water distillation from rainwater

I have looked around, and there are numerous ways to approach this. I just don't see one that is what I want yet. Might want to consider Zero Mass Water, a company that makes "water panels" - combined PV and thermal panels that distill water right out of the air. I think it will make abou...
by JackFlorey
Dec 21 2020 10:47pm
Forum: Electric Aircraft
Topic: Flying Caravan ??
Replies: 12
Views: 321

Re: Flying Caravan ??

“Stretching a glide” and ... “dive to recover energy through regen”... would appear to be contrary concepts ? Yes, they are. Let's say you are far from an airport. You are then better off in an electric aircraft, since the freewheeling torque from an electric motor is far less than the torque from ...
by JackFlorey
Dec 20 2020 1:48am
Forum: Electric Aircraft
Topic: Flying Caravan ??
Replies: 12
Views: 321

Re: Flying Caravan ??

Very different for running out of fuel at 5,000 ft. Exactly the same. You are then in a glider. Actually you are a little better off in an electric vehicle. You can dive the aircraft to recover some energy through regen. Can't do that with a recip or turbine. Nice to still have the ability to stret...
by JackFlorey
Dec 19 2020 11:50pm
Forum: Alternative Energy
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6417
Views: 364761

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Now you are just being an Ar5e ! How sad that you can no longer come up with a single intelligent argument. Ah well. At least you can watch as the rest of us continue to build out renewables. Perhaps you can attack people like this next! Yet more people for you to mock for choosing solar over fossi...
by JackFlorey
Dec 19 2020 8:07pm
Forum: Alternative Energy
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6417
Views: 364761

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Note , that i said “World Leaders”..IE people capable of leading others to a better future.....not hat guy fron Mississippi chugging 7UP ! Yep. And if a US president decided that "lack of calories makes people starve - so double the calories to Americans! More is better!" then they'd be f...
by JackFlorey
Dec 18 2020 11:53am
Forum: Alternative Energy
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6417
Views: 364761

Re: Wind and Solar vs Coal, Gasoline, Nuclear

..... fortunately few world leaders share that rediculous and highly selfish viewpoint. Most realise that cheap energy supplies are essential for development and health. That's a ridiculous thing to say. It's like a guy who comes from sub-Saharan Africa and says "more and cheaper calories are ...
by JackFlorey
Dec 18 2020 11:40am
Forum: Alternative Energy
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6417
Views: 364761

Re: Wind and Solar vs Coal, Gasoline, Nuclear

jonescg wrote:
Dec 18 2020 2:15am
Anything H2 can do, electricity can do better.
I would also point out that you can make methane even more easily than hydrogen. And if it comes from bioreactors or a Sabatier process, it is just as carbon-neutral as hydrogen. And it's a lot easier to store.
by JackFlorey
Dec 17 2020 8:14pm
Forum: Electric Aircraft
Topic: Flying Caravan ??
Replies: 12
Views: 321

Re: Flying Caravan ??

markz wrote:
Dec 17 2020 8:11pm
Hate to run out of battery power at 5000 feet
Not much different than running out of fuel at 5000 feet.
by JackFlorey
Dec 16 2020 9:48pm
Forum: E-Bike Technical
Topic: Rear wheel hub motors - do they free wheel?
Replies: 6
Views: 277

Re: Rear wheel hub motors - do they free wheel?

Are there any models of rear wheel hub motors that allow the rear wheel to just roll along without power, then you just apply power to engage the drive then pull back on the power once youre up to speed? If so what manufacturers might make these please? You are going to find, in general, two kinds ...
by JackFlorey
Dec 15 2020 7:29pm
Forum: E-Bike General Discussion
Topic: LiPO PSA - How Not to Bun Your House Down
Replies: 15
Views: 527

Re: LiPO PSA - How Not to Bun Your House Down

If the charge source does not automate the cycle termination based on **some sort** of algorithm to judge when the pack is full it is not a charger. Problem is that: 1) there's no way for a 2 terminal charger to know what voltage the pack wants; anything bigger than about a 3s could be one of sever...
by JackFlorey
Dec 14 2020 12:54am
Forum: Alternative Energy
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6417
Views: 364761

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Hillhater wrote:
Dec 13 2020 5:38pm
Why would you want to restrict anyones prosperity,?.
To keep people and endangered species alive, perhaps?