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Big Red. The Coil (now with 1st light pics)

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Steve Ward
Tue Jul 08 2008, 05:20PM
Steve Ward Registered Member #146 Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
Oh, i wanted to mention, with my past experience with RSGs, i found that tungsten was the best for wearing down, but brass was a pretty darn good second place! Steel, on the other hand, wore down at about twice the rate it seemed, but it was regular steel bolts you buy from any hardware store.

Anyway, you can easily buy threaded brass rod, so id suggest trying it out if the steel you already have doesn't seem to be holding up.
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teslacoolguy
Wed Jul 09 2008, 02:13AM
teslacoolguy Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
I could try using brass acorn nuts.
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teslacoolguy
Sun Jul 13 2008, 08:20PM
teslacoolguy Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Just an update on the coil. I just put my 9th layer of varnish on the secondary so 3 more layers and the secondary will be complete.
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teslacoolguy
Sat Jul 26 2008, 04:14AM
teslacoolguy Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Lots of work done on the coil. I have hit a couple of brick walls but now i think i have cleared them and work can continue. I made the strike rail along with the motor mount for the rsg and wired up the controller box. I will post pics tomorrow.
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teslacoolguy
Sun Jul 27 2008, 04:27AM
teslacoolguy Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Today i got the rsg and the dc motor controller working well so tomorrow i have alot of wiring to do.
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Dr. H.
Sun Jul 27 2008, 06:54AM
Dr. H. Registered Member #931 Joined: Mon Jul 30 2007, 05:25PM
Location: Bulgaria
Posts: 486
Hey - where are those pics - hee hee

Cheers Dr. H .
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teslacoolguy
Sun Jul 27 2008, 07:12PM
teslacoolguy Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Here smile
RSG completed
1217185857 1107 FT47960 Rsg Done

1217185857 1107 FT47960 Rsg Done Flip


PWM dc motor controller

1217185915 1107 FT47960 Controller Closed

1217185915 1107 FT47960 Controller Open
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Dr. Dark Current
Sun Jul 27 2008, 07:58PM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Nice!! I always wonder why people use such monster motors for RSG's, do the sparks really brake it so much? I would think 10W or so motor would be enough.

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Steve Conner
Sun Jul 27 2008, 09:35PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Because big motors look cool.

The sparks don't exert any torque at all: most of the power is needed to overcome air resistance, which can be high. A big disc spinning fast will blow air outwards like a centrifugal fan, even though it has no blades, and it takes power to do this.
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teslacoolguy
Mon Jul 28 2008, 01:56AM
teslacoolguy Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Big motors are pimp cheesey. I actually was going to use a small scooter motor but it just did not provide inough torque to run that rsg. I payed $25 for that motor and $30 for the motor controller. The motor is rated 1/3hp 1800rpm. The controller can handle motors up to 3/4hp on either 90 or 180v so it is pretty much universal.
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