Search found 1815 matches
- Sat Oct 30, 2021 6:22 pm
- Forum: General Discussion
- Topic: What exactly is "over unity" ?
- Replies: 31
- Views: 19166
Re: Where exactly is "over unity" ?
I did no such thing, it'sjust that I'm so bad at making points or questions concise and clear it takes several attempts. :-) Thank you for putting Fletcher back in the proper context, nic. I didn't mean to attribute that quote to him yet I suppose this is an important topic with lots of questions.
- Sat Oct 30, 2021 2:35 pm
- Forum: General Discussion
- Topic: Marquess of Worcester
- Replies: 83
- Views: 340136
Re: Marquess of Worcester
The weights on the ascending side are definitely closer to the axle, which means it's easy for the weights further from axle descending side , at a greater radius , to be be able to descend and lift those on the ascending side. How you stop the things swinging around and spoiling the show is anyone'...
- Sat Oct 30, 2021 1:14 pm
- Forum: General Discussion
- Topic: What exactly is "over unity" ?
- Replies: 31
- Views: 19166
Re: What exactly is "over unity" ?
Hi, agreed 100 %. It's the unexplicably efficient I'm thinking about. At simplest, an Atwoods with 100 gramme weights either side of the string. You stumble on some voodoo part, a cam or whatever, and adding 1 gram to one side sends the 100 + 1 gram side travelling down at a greater speed than the m...
- Fri Oct 29, 2021 9:30 am
- Forum: General Discussion
- Topic: What exactly is "over unity" ?
- Replies: 31
- Views: 19166
Re: What exactly is "over unity" ?
How about DO as in "Dream on" ?"
- Thu Oct 28, 2021 12:03 pm
- Forum: General Discussion
- Topic: What exactly is "over unity" ?
- Replies: 31
- Views: 19166
What exactly is "over unity" ?
Hi all, I've been away from this forum and more generally from PM for some years. There is still a probably badly failed build banging aound in the attic. It might make a nice random ham slicer. My main issue is defining OU. It isn't as simple as a wheel with a overbalance weight starting revolving ...
- Sun Apr 19, 2020 7:20 pm
- Forum: General Discussion
- Topic: Self Running Magnetic Motor
- Replies: 12
- Views: 15433
- Sun Apr 19, 2020 6:26 pm
- Forum: General Discussion
- Topic: Self Running Magnetic Motor
- Replies: 12
- Views: 15433
re: Self Running Magnetic Motor
That is a concept I have been thinking about for a heck of a long time. The thinking is that as a wheel magnet approaches an external magnet, you get the external magnet to physically flip or rotate, so that the side (polarity) facing the mag on the wheel changes at precisely the right moment, so yo...
- Sat Mar 28, 2020 12:57 pm
- Forum: General Discussion
- Topic: General question which might or might not relate to PM
- Replies: 7
- Views: 11609
General question which might or might not relate to PM
Could anyone, offhand, tell me if air, ie the atmosphere we breath in and out and extract o2 from, has a positive and negative polarity ? The actual oxygen carried in the air too ? The exhaled air too ? Would passing that air through a pipe with a copper wire wound around it or inside it produce any...
- Fri Oct 04, 2019 12:32 pm
- Forum: General Discussion
- Topic: Simple question.
- Replies: 12
- Views: 9755
Re: re: Simple question.
You might want to take the kitchen scales with you. So you can see how much pressure you put on the wall. Also note the arm a 3 0'clock is not contacting a wall so you need to keep away from friction forces agained the wall. Good look Oops, just saw this, we agree on the two scales needed. The pend...
- Fri Oct 04, 2019 12:28 pm
- Forum: General Discussion
- Topic: Simple question.
- Replies: 12
- Views: 9755
Yep, 71kgs vertical, 71 leaning sideways give or take some miniscule movement of the scale needle due to the way the scales are sensitive to CoM. And 67 with the scales nearer the wall , same amount of lean but hand against wall supporting some or all of the offset body weight. You'd really need sca...
- Fri Oct 04, 2019 12:16 pm
- Forum: General Discussion
- Topic: Simple question.
- Replies: 12
- Views: 9755
OK, I am going to do something right now: stand on the bathroom scales, read weight. Then lean sideways as much as I can with arm extended. That should be equivalent of an OB offset. The weight reading should be the same, even if the scales aren't Roberval. Then I move the scales to near a wall and ...
- Thu Oct 03, 2019 10:49 pm
- Forum: General Discussion
- Topic: Simple question.
- Replies: 12
- Views: 9755
- Thu Oct 03, 2019 10:43 pm
- Forum: General Discussion
- Topic: Simple question.
- Replies: 12
- Views: 9755
re: Simple question.
Thx. Yep, it's been a while, got a bit involved in politics and stuff. Complete waste of time, energy, money. I agree w/ you 100 % Fletch. The weight registering on the scales is identical whether the OB weight is at 6, 3 or 12. At 6 , it takes a given effort to rotate that wheel to 12 and gain GPE....
- Thu Oct 03, 2019 7:15 pm
- Forum: General Discussion
- Topic: Simple question.
- Replies: 12
- Views: 9755
Simple question.
Considering Newton's 3rd law, in the drawing below, where a rotating wheel with a weight on extension arm is mounted on a pendulum arm, if the arm is locked into place, and the wheel+weight is rotated 90° from bdc 180° and locked, is total F greater than in the "all vertical" scenario ?
- Wed Oct 02, 2019 12:17 pm
- Forum: General Discussion
- Topic: Free ride, one way ticket
- Replies: 19
- Views: 11631