If two is good then four is better

[McDog]

 

[DAG]

So unnessary, but hey it's cool. Nice work

 

[jo5hi3]

Thats nice to have in airplane world, but not in ski world.....

 

[tor*p*do]

overkill

 

[AdzUK]

Be good to see what difference it makes

 

[yamanube]

Be good to see what difference it makes

Better get it on the dyno.

 

[Dustin88]

maybe its a v4?

 

[McDog]

ATP posted it on Facebook.

 

[Schmidty721]

Lee Stone's ski.

That change anybodies opinion? lol

 

[King Kang]

I saw a pic on Facebook of an old 440 head (could have honestly been a 400 or a 550) that had four spark plugs.

 

[Aquaholic]

Back to the Future.

 

[Lumpy]

Was the blunderjet equipped with this ignition? @Aquaholic

 

[Aquaholic]

Was the blunderjet equipped with this ignition? @Aquaholic

Negative. OEM JS550 ignition. That was the only component that actually functioned on that POS.

 

[speedysprocket]

Back to the Future.

View attachment 284339

So I take this to be two separate systems where you operate one or the other, not a true four plug system that fires both plugs at the same time, or better yet, a few degrees apart.
I assume Lee's setup is firing both plugs in each cylinder at the same time or a couple degrees apart.

 

[Quinc]

https://en.wikipedia.org/wiki/Dual_ignition

 

[aytee]

A lot of fire trucks set up for grassland and forest also run dual systems... I don't see this being a dual system though.. Just more plugs on the same system.. Better burn off I'm guessing.. Might actually be in the direction of making 2 strokes more emission compliant?

Sent from inside a beer can

 

[bird]

correction: Lee Stone posted on Intagram and Facebook, ATP stole the photo.

ATP posted it on Facebook.

Two flame fronts = fuel burning twice as fast = faster throttle response? or less need to advance? both?

 

[bird]

https://en.wikipedia.org/wiki/Dual_ignition

Link talks about twin ignition in Porsches
http://rennsportsystems.com/letstalk-2/gasoline-detonation-twin-ignition/

cooler head temps, higher compression, less advance, rpms, throttle response

 

[swapmeet]

I specifically looked at that photo on FB this morning and overlooked the double plugs. I was trying to see if it was a 1400 or something.

 

[keith t]

Video on facebook shows Lee doing 40 flips around the lake , my bet is there is something about this system