TDC - Ignition question

1 reply to this topic
  • Hick

Posted October 09, 2000 - 06:46 AM


How does the ignition know where TDC is? Does it just fire at x degrees before TDC every revolution (i.e. fire on the exhaust stroke AND compression stroke)?

I realize it knows the crank position but how can it know where the cams are?

I’m sure there is a simple answer and I’m curious as to what it is…

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Taffy

Posted October 09, 2000 - 01:39 PM


hick the engine has a wasted spark-it fires EVERY TIME the engine goes around.

the only way anybody does it any different is if they put the ignition on the camshaft. this though, is a bad move due to all the lash of the camdrive.

the only thing that wears out quicker is the plug!



Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.