If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #1968
Joined: Tue Feb 10 2009, 07:47PM
Location: Cedar Rapids, Iowa
Posts: 5
I am very interested in building a low power coil gun. I have been searching online but am having a little trouble finding information for someone with no experience. I would like to build a very basic coil gun using batteries as a power supply before attempting to move to something bigger. Thank you for any help.
Registered Member #1107
Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Read through Barry's website there is more then enough information on that site for building your first coilgun. For the power supply i would look into a simple boost converter design like uzzor's made on his website I hope this helps you a lot.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
Read the HvWiki (left hand menu) to try and find more information ( )
Also, use google to look up information, most information is out there on the internet, and here on the forums in older posts. Use google, the search function, and try wikipedia as well. We can only really help people who have done their own background research.
Registered Member #90
Joined: Thu Feb 09 2006, 02:44PM
Location: Seattle, Washington
Posts: 301
In particular, my website has a coilgun powered by two 12v lantern batteries which was built in a cheap plastic toolbox. It gains efficiency by surrounding the coil with laminated iron that was liberated from an old transformer core. It was built in 2003 and I'm still using the same two batteries.
Let me know if you want more photos (e.g. interior views) let me know and I can easily add them to my web site.
I guess I don't really understand the fascination with boost converters. They seem to be popular, but if I want high voltage at decent current then I'll simply use a transformer plus diode bridge. It doesn't get any simpler and easier than that.
Cheers, Barry The road to success is always under construction.
Registered Member #1968
Joined: Tue Feb 10 2009, 07:47PM
Location: Cedar Rapids, Iowa
Posts: 5
Thanks for your help. Barry your site is very helpful and will hopefully lead to my first coil gun!!! Will probably have lots more questions but for now Im off to get more supplies.
Registered Member #1819
Joined: Thu Nov 20 2008, 04:05PM
Location:
Posts: 137
Mattc1886 wrote ...
I've been trying to wind my coil and so far have been unable to get it as neat and tight as I would like. Does anyone have any useful tips?
How are you winding your coil? Whatever you do, DON'T hold the coilform still and rotate the wire around the coilform. This will twist the wire and evetually it will start to bend and cause your coil to deform. Instead, find a way to hold the spool of wire still but able to rotate (you can use your hands, but something like a toilet paper roll works too). Then rotate the coilform with one hand (which pulls the wire off of the spool), and guide the wire onto the right place.
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
First time coil gun.
