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 #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Hello, as man of you know, I need to start makig a new coil. My old one got abuse when istarted using an open coil with no straw in the middle. Due to this, the things I shot sometipes ripped out 3-4 inches from the middle coil. Amazing, it still works.
I decided and already bought 2 spools of 14 guage magnet wire (40ft). It's going to be wrapped so a burgerking straw fits in the middle It will use 400v as it's set voltage.
Question: I thought there was some huge formula to figure this out, but lost it. What's the best coil width and layers to use? 14 guage wrapped around a straw. Guessing that's 8mm or something. How man layers do you guys recommend and at what width?
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Yeah maybe, The metal bolt I used was bigger than a straw, It's enough that i can fit my screw driver bits into it. They are about 7mm, They cant fit into a straw, So Must be my bolt was bigger than a straw. But yeah, I may consider a pen, my bolt is going to be too small for the width im going to need.
Know estimated to use?
I got a thousand of these free dentist pens. And my drill bits fit into them easy (on the left Philips )
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Coiling this wire is NOT fun!!!!! I didn't think it would be this strong of a wire damn >_>
Well, first hard coil wasnt too bad. Because I had no side blockers, some layers wanted to squish down so SOMETIME ill have to recoil on a rig and vice maybe to assure my coil is F L A T to the sides. Later though :D
Erm, Since you guys never helped me really, i did a 80mm coil on a pen, 5 layers maybe, and well, 100V, bearly shot. 200V, big PFF and spark and smoke, solder connection on the coil well, pow.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
The switch isnt the problem. My old 22 gauge 10mm 12 layer coil worked good at 400V. Then I try this big 80mm 5 layers of 14 AWG coil, and well, it sucks. Maybe too wide? No one ever told me >_> if you need stats...
What happen was my solder connection exploded. cuz it wasnt a snap/pop it was a PFF, and I know solder makes that sound. My guess is the coil is too big >_< I hate cutting this wire because once cut, i cant ever extend :(
Registered Member #1694
Joined: Sat Sept 13 2008, 09:13AM
Location: Australia
Posts: 108
Its possible that the capacitors are discharging to fast. Your capacitor should discharge in around 5 - 8ms for maximum performance. Any longer and the projectile will experience suck back, any shorter and it won't absorb as much energy.
Registered Member #1062
Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
i found a good way to wing 12AWG wire is to wilnd the first layer, twist it, and push it together, and hold it in that position while you wind the next layer.
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.
Quick help with wire/coil
