X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-04.southeast.rr.com ([24.25.9.103] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2165495 for flyrotary@lancaironline.net; Sun, 08 Jul 2007 13:15:15 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-04.southeast.rr.com (8.13.6/8.13.6) with SMTP id l68HEaCi000459 for ; Sun, 8 Jul 2007 13:14:36 -0400 (EDT) Message-ID: <000701c7c183$7d2e95b0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: New subject: Pulstar Plugs Date: Sun, 8 Jul 2007 13:14:48 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0004_01C7C161.F5C73490" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0004_01C7C161.F5C73490 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hey, Al I do like creative suggestions, but there is just something about trying = a home-made, gap adjuster in an airborne platform that rings a bit = different than doing it on a ground-bound 47 Chevy {:>). At 25 dollars a plug that the cost of approx 3-4 stock plugs. So they = would have to resist fouling (SAG) 3-4 times longer than my stock plugs = just to break even. Now that would give close to 100 hours and just to = avoid SAG and the hassle of plug changes it might be tempting. But, I = think I'll wait. Ed ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Sunday, July 08, 2007 1:28 PM Subject: [FlyRotary] Re: New subject: Pulstar Plugs On 7/5/07, Bill Eslick wrote:=20 Even though they don't make a version for the rotary, I would like = some feedback about these plugs. Any experience at all out there? http://www.pulstarplug.com/index.html One thing is clear - the technical stuff on their website in nonsense. = For example, the 50 watts vs 1,000,000 watts of spark power. A Watt is = a measure of power, energy times time; a joule/sec. The coil delivers = the same amount of power whether there is a regular plug or a PulseStar = plug. What the over-priced PulseStar plug does is concentrate the power = to a higher voltage, shorter peak; which can have some advantage is = overcoming gap resistance; but doesn't necessarily give better fuel = burn. The depiction of the pressure in the cylinder is also bogus - doesn't = represent reality in either case. As someone else noted, it is very much the same as holding the wire = about =BC" from the plug. Back when I was a teenager I had a somewhat = worn 1947 Chevy. The worn piston rings would cause the plugs to foul. = When pulling the wires to figure out which cylinder was missing, it = didn't take me long to discover that the pug would fire when I held the = lead a short distance off the plug. I found that using a short length = of fuel hose that fit snuggly on the plug, and on the lead, allowed me = to slip that on and maintain the gap. I called my invention the "gap = adjuster". The PulseStar has a more reliable version of the "gap = adjuster". It is possible that it could help with the SAG issue, so someone who = routinely burns avgas may have to do the test (Ed? I know you love this = kind of stuff). Maybe instead of buying the $25 ea plugs you can devise = a reliable "gap adjuster" and see if the SAG goes away. Al ------=_NextPart_000_0004_01C7C161.F5C73490 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hey, Al
 
I do like creative suggestions, but there is = just=20 something about trying a home-made, gap adjuster in an airborne platform = that=20 rings a bit different than doing it on a ground-bound 47 Chevy=20 {:>).
 
At 25 dollars a plug that  the cost of = approx 3-4=20 stock plugs.  So they would have to resist fouling (SAG) =  3-4=20 times longer than my stock plugs just to break even.  Now that = would give=20 close to 100 hours and just to avoid SAG and the hassle of plug changes = it might=20 be tempting.  But, I think I'll wait.
 
Ed
----- Original Message -----
From:=20 Al = Gietzen=20
Sent: Sunday, July 08, 2007 = 1:28 PM
Subject: [FlyRotary] Re: New = subject:=20 Pulstar Plugs

On=20 7/5/07, Bill = Eslick=20 <wgeslick@gmail.com>=20 wrote:

Even though they don't make a = version for=20 the rotary, I would like some feedback about these=20 plugs.

 

Any experience at all out=20 there?

 

http://www.pulstarplug.com= /index.html

 

One thing = is clear=20 =96 the technical stuff on their website in nonsense.  For = example, the 50=20 watts vs 1,000,000 watts of spark power. A Watt is a measure of power, = energy=20 times time; a joule/sec.  The coil delivers the = same amount = of power=20 whether there is a regular plug or a PulseStar plug. What the = over-priced=20 PulseStar plug does is concentrate the power to a higher voltage, = shorter=20 peak; which can have some advantage is overcoming gap resistance; but = doesn=92t=20 necessarily give better fuel burn.

 

The = depiction of=20 the pressure in the cylinder is also bogus =96 doesn=92t represent = reality in=20 either case.

 

As = someone else=20 noted, it is very much the same as = holding the=20 wire about =BC=94 from the plug.  Back when I was a teenager I = had a somewhat=20 worn 1947 Chevy. The worn piston rings would cause the plugs to = foul. =20 When pulling the wires to figure out which cylinder was missing, it = didn=92t=20 take me long to discover that the pug would fire when I held the lead = a short=20 distance off the plug.  I found that using a short length of fuel = hose that fit = snuggly on=20 the plug, and on the lead, allowed me to slip that on and maintain the = gap. I=20 called my invention the =93gap adjuster=94.  The PulseStar has a = more=20 reliable version of the =93gap adjuster=94.

 

It is = possible that=20 it could help with the SAG issue, so someone who routinely burns avgas = may=20 have to do the test (Ed? I know you love this kind of stuff).  = Maybe=20 instead of buying the $25 ea plugs you can devise a reliable =93gap = adjuster=94=20 and see if the SAG goes away.

 

Al

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