Building an SG by the end of this year.

[JRHKF]

The core should be 0.75 inches? (See post #51 by jamesgray3rd.) Is that the inner or outer diameter of the core? (I currently have a piece of PVC pipe with inner diameter 0.75 inch.) Also, one member of the forum recommended using a 470 ohm resistor; Aaron Murakami says 100 ohm.

[wrtner]

The man I live with recommends using a circuitboard as a place to assemble the circuit, so that you can easily correct any mistakes. Does everyone agree?

Yes, this is a good idea. The board will hold the components in position and stop things touching which shouldn't.

But you don't need to waste time being too fancy about this.

I have done well with a stiff piece of cardboard having poke holes through with a small nail or the end of a pair of scissors.

[James_Somewhere_In_Idaho]

Faraday88

Thanks, man...

[Faraday88]

Hi JRHKF

If you plan to do the 7-20 AWG plus 1-23 AWG strand coil the beginner project suggests using, then the suggested size coil frame would be 3.25 inches tall and have a diameter of 3.5 inches with the core being .75 inches. If you are using different size wire, or a different number of strands, then you would need a different size coil frame. For instance: I have recently built 2 different coils, 1 with 8-18AWG strands and 1-23 AWG strand, all 120 feet long, and it required a coil 4.5 inches tall, by 4.5 inches wide, with a 1.05 inch core. It's companion for this build just had 8-18AWG. I built the frames ends out of HDPE cutting board stock, and the core support was 1 inch poly pipe, all plastic-welded together. They looked like this:

[ATTACH=CONFIG]5028[/ATTACH]

If you end up building your coil frames, instead of ordering from TeslagenX (I suggest beginners should order them), do not try to build them using PVC and glue...doesn't work good. Some people have great luck with acrylic using acrylic solvent...essentially chemically welding the round core support to the flat end pieces they cut out with a hole saw...I would like to do that some day...looks nice, But for me, it is cheaper to use cutting boards and plastic weld them together...hope that helps...

Neat Build man! good suggestion especially when you need a lot of them.....
Rgds,
Fardaay88.

[James_Somewhere_In_Idaho]

Hi JRHKF

Here is where you can do research if you can't access your book yet: http://www.energyscienceforum.com/forumdisplay.php?f=16

[James_Somewhere_In_Idaho]

Hi JRHKF

If you plan to do the 7-20 AWG plus 1-23 AWG strand coil the beginner project suggests using, then the suggested size coil frame would be 3.25 inches tall and have a diameter of 3.5 inches with the core being .75 inches. If you are using different size wire, or a different number of strands, then you would need a different size coil frame. For instance: I have recently built 2 different coils, 1 with 8-18AWG strands and 1-23 AWG strand, all 120 feet long, and it required a coil 4.5 inches tall, by 4.5 inches wide, with a 1.05 inch core. It's companion for this build just had 8-18AWG. I built the frames ends out of HDPE cutting board stock, and the core support was 1 inch poly pipe, all plastic-welded together. They looked like this:



If you end up building your coil frames, instead of ordering from TeslagenX (I suggest beginners should order them), do not try to build them using PVC and glue...doesn't work good. Some people have great luck with acrylic using acrylic solvent...essentially chemically welding the round core support to the flat end pieces they cut out with a hole saw...I would like to do that some day...looks nice, But for me, it is cheaper to use cutting boards and plastic weld them together...hope that helps...

[JRHKF]

How tall should the spool be that holds the coil of wire (450 to 800 turns, supposedly) that sits under the bicycle wheel? 15 cm/ 6 inch, maybe?

[JRHKF]

Unfortunately, my home computer doesn't have internet.

[Nityesh Schnaderbeck]

About operating systems, I have my own computer, but it is so primitive that about all it is good for is word processing, and its word processing system is so crude that I prefer to use other computers. If I open my e-book, it will probably have to be somewhere else, probably my local library (Aldrich Library, Barre, Vermont). Said library's computers use Windows 7; they are PC's, as opposed to Macs.

Hello JRHKF here is a linux based distribution, that goes fast on slow computers, some thing I spent ages on. Here is the link to download the iso image.

https://drive.google.com/file/d/0B1_...ew?usp=sharing

I hope this helps you.

Enjoy,

Most
Kindest
Regards
Nityesh Schnaderbeck

[James_Somewhere_In_Idaho]

If you are getting the circuit boards from TeslagenX, they are marked pretty well for parts placement. If you are building from scratch, try to do one thing at a time, making sure you solder parts close to each other (even right on the component), paying attention to which "leg" is which for the transistor, and diodes, as the diodes are directional, and the transistor legs are different in reality than one might think by looking at a circuit diagram. Once you realize those things, you should be able to build it one part at a time...

[James_Somewhere_In_Idaho]

Hi JRHKF

1) 1 watt 470 ohm resistors are standard for beginner level builds. However, for intermediate and advanced level builds, we are encouraged to use 1 watt 100 ohm resistors in series with a 1K ohm" tuning" potentiometer. For beginners, the 470 ohm resistors make it easier to "get it running." Later, we are encouraged to "fine tune" the machine, to get the most out of it. That would require matching the 100 ohm resistors, and matching the transistors. So right now, since your resistors are half watt, go get some 1 watt 470 resistors and stick with the learning curve. John B. developed the learning curve for good reasons.

2) Get a bunch more of those bar magnets, and a bicycle wheel. You will thank me later. Be sure you get some super glue and strapping tape...

3) Which computer do you have, and what processor and processor speed do you have (should say somewhere on it). Older-slower computers are excellent candidates for Ubuntu (or any Linux OS, but Ubuntu is more user friendly, IMHO). Let me know which one you have, and I will try to suggest an OS for you that could speed up your computer and make it more capable/useful.

[JRHKF]

I saw some images of circuitboards, and they look very complicated. Any advice on how to use one?

[JRHKF]

I just emailed Aaron Murakami:

"Btw, I said my resistors were 100 ohm, 5 watt; you said that was acceptable. In fact, that was a misstatement; they are 100 ohm, 0.5 watt. Is that acceptable? What should their power rating be?

Also, I have two sets of magnets that I could use for the SG flywheel:
· * Four bar magnets, of (3/8) inch × (7/8) inch × (15/8) inch (9.5 mm × 22 mm × 47 mm)
· * Eighteen disc magnets, of diameter 1 inch (25.4 mm)

Which magnets should I use? (I could get more bar magnets, if appropriate.) Also, these magnets seem a bit too big for my flywheel if I am going to use a skateboard wheel. What kind of flywheel should I use then?"

Any ideas?

[JRHKF]

About operating systems, I have my own computer, but it is so primitive that about all it is good for is word processing, and its word processing system is so crude that I prefer to use other computers. If I open my e-book, it will probably have to be somewhere else, probably my local library (Aldrich Library, Barre, Vermont). Said library's computers use Windows 7; they are PC's, as opposed to Macs.

[James_Somewhere_In_Idaho]

Hi JRHKF

First-things-first: What operating system do you have?

If you have a Linux based operating system (like Ubuntu), then go to your software center (it already knows if it is 64-bit or 32-bit) icon, and type in "zip". You should find several file archiver programs. Pick the one with the best ratings, and click "install."

If you have a Windows based system, then the down-loader Aaron pointed you to, might be the way to go. However, you will need to know if your computer is running in 64-bit or 32-bit configuration.

If it is a Mac...don't know how to help you...

The difference between 64-bit and 32-bit has to do with the processor and the operating system. You have to know if your processor is 64-bit capable, and whether the operating system is configured for 64-bit or 32-bit. A 64-bit systems can be configured for 32-bit operating systems, but not the other way around, and you have to run one or the other. In other words, your operating system is running either in 64 or 32-bit configuration, and that was determined when the operating system was first installed.. I think one could check their "system" set-up parameters to check for that. You do have to know which you have. Try looking in your system information file.

As far as where you want those files located, the "un-zipper" program, once installed, is just a program running on your computer and you can use it for any zipped files. Once you unzip a file(s) you can then put them anywhere you wish--like a thumb-drive...they are just normal PDF or other files...

I could have just said: "find out if your computer runs 64 or 32 bit." But, it is my opinion that one should know the capability of their tools (in this case a computer) in order to get the most out of them. You computer can be much more than an internet tool...

This is why I suggest using UBUNTU (like 12.04 LTS) to people who want the most out of their computer, instead of Windows operating systems, because if one needs a special program to do something (even engineering programs), there is usually a really good open-source program available for them in their software center (some "special" applications you might still need to look for at websites) that is free, and as easy as clicking "install" to download and install it...where as Windows makes you purchase or look all over the place to find what you need, and then you need to know things like "is my computer running in 64 or 32-bit configuration"...

I am running Ubuntu 12.04 and I can run, and have just about any kind of software you can imagine, even the fancy computer to multi-meter interface you see folks running here, simply by pointing and clicking...hope that helps...