View Single Post
Old 11-22-2011, 10:12 AM   #3 (permalink)
Ryland
Master EcoModder
 
Ryland's Avatar
 
Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,904

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
Thanks: 867
Thanked 433 Times in 353 Posts
Sparks also jump easiest from a sharp edge or point and not from a rounded nub, that is why NGK V-power plugs seem to work well, the center contact has a simple v grove creating two points for sparks to jump, of course the sharp edge of a standard post works well too, splitting the electrodes is not a new idea.
If you really want to get in deep, the SAE published a book a while back on spark plugs and spark plug design and explained a lot of the ideas behind some of the different designs along with their draw backs.
  Reply With Quote