REFLECTOR: 6 Cyl. Lightspeed Ignition

[Scott Derrick]

Maybe you have the older Plasma I or II.  The specs for the III
specifically say you need cooling, and I talked to Claus and he
reiterated. that.  He said it will work and he knows people not doing
it, but he expects a much reduced lifespan for the unit if cooling air
is not provided.

Yes, I ran with one mag and one LS with my IO360.  I will do teh same
with the IO520. Mags are a pain, but they are also almost bullet proof
and I like the peace of mind knowing I can have total electrical failure
and still motor on.

I wish those P-Mag folks could have produced a 6 cylinder unit a lot
sooner.  Thats the cats meow, self powered electronic ignition!

Scott

Douglas Holub wrote:
> I mounted both of my boxes on the cabin side of the firewall so no
> cooling is necessary. I regret using dual Lightspeeds. I wish I had
> put a magneto on the bottom plugs for peace of mind and for a simpler
> installation. I don't notice any RPM drop when I switch off one of the
> ignitions, and Klaus says the engine runs great on just one box. The
> literature says you get an additional 5% hp by using two boxes, but I
> don't believe it. And with dual Lightspeeds you need an extra battery
> dedicated to ignition backup and other additional wiring. It's a
> little complicated and a nuisance. I've got to admit that the engine
> starts and runs great, though. If I lean too much, the engine just
> quits-- no running rough to give you any warning. (It's kind of scary
> when that happens. I need to watch it.)
>
> Why don't I pull one of the boxes out and install a Slick magneto for
> the bottom plugs? I was so sure I never wanted to put a magneto on my
> engine, I ordered it with 12 mm bosses (automotive spark plugs) on all
> 8 cylinders. I guess I could get them machine out to 14 mm if I wanted
> to.....
>
> Doug Holub
> N2980W 2009 Standard FG w/ 63 hrs
> ----- Original Message ----- From: <scott at tnstaafl.net>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Monday, July 20, 2009 7:37 PM
> Subject: REFLECTOR: 6 Cyl. Lightspeed Ignition
>
>
>> I just purchased a Lightspeed for my IO520.   I had one on my IO360 and
>> loved it. It's the best performance improvement for the buck I have run
>> across.
>>
>> Easy starting, hot or cold
>> Silky smooth idle
>> Runs very clean
>> More HP
>> Better mileage
>> Improved detonation prevention
>> Lighter weight
>> Allowed me to run 75 LOP with the IO360
>>
>> So I was perusing the web site and noticed that Claus recommends cooling
>> for the 6 cylinder model?  I called and he said all I really needed was
>> some air movement.  He said a small 3/8 hose connected to the engine
>> side
>> of the firewall plugged into the cooling port on the lightspeed would do
>> it.  The differential pressure being plenty strong enough to move enough
>> air to keep it cool.
>>
>> Anybody doing it this way?
>>
>> Scott
>>
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