>> jofarr, soddy tn >> It won't prevent fouling. If you have carbon on the insulator it will = foul, end of story. The problem isn't having enough voltage to fire. The = problem is being sure that the discharge jumps the gap instead of = running down the face of the insulator in the carbon. You can have a = million volts but if the spark runs on the surface it won't run any = better. I have seen all kinds of high energy CDI systems. They never = worked any better. Bill Jepson -------------------------------------------------------------------------= ----- See what's free at AOL.com. ------=_NextPart_000_001D_01C7BFDB.4BEDD7D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

The Mustang is still (in my opinion) the = prettiest of=20 WWII on, but all interesting, Thanx,

Harold

----- Original Message -----
From:=20 WRJJRS@aol.com
To: Rotary motors in = aircraft

Sent: Friday, July 06, 2007 = 2:25 PM

Subject: [FlyRotary] Re: Fw: = [FlyRotary]=20 New subject: Pulstar Plugs

In a message dated 7/6/2007 6:19:52 AM Pacific Standard Time, eanderson@carolina.rr.com=20 writes:
Jesse,=20 I sent an e mail to these folks asking them if they had any data on =
how=20 their plug performed under fouling conditions - both carbon and = lead.
Be=20 interesting to see what the response is - if I get one of = course.

$25=20 is a lot to pay when the stock ones run $5-7 a piece, but if you fly =
much with 100LL then you will find you need to replace them = around 25=20 hours
or so. So if this plug overcame the fouling problem = and gave=20 a much longer
life, then they might be worth the price for that = reason=20 along.

Ed
>> Isn't 25 bucks each a lot to pay for an = air=20 gapped plug ? There may be
>> more to them than that but = that is my=20 first reaction. We used to have to
>> move plug wire back = off plug=20 or cut small gap in wire to get a plug to
>> fire when = valve guide=20 seals went out and/or some other reason loaded
>> = combustion=20 chamber with oil. I first learned that from seeing used cars =
>>=20 when worn out and using a lot of oil with wire gapped and taped = where=20
>> didn't notice. <g>
>> jofarr, soddy=20 tn
>>

It won't prevent fouling. If you have carbon on the insulator it = will=20 foul, end of story. The problem isn't having enough voltage to fire. = The=20 problem is being sure that the discharge jumps the gap instead of = running down=20 the face of the insulator in the carbon. You can have a million volts = but if=20 the spark runs on the surface it won't run any better. I have seen all = kinds=20 of high energy CDI systems. They never worked any better.

Bill Jepson

See what's free at AOL.com.=20

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