Re: Franco gear

[DeWitt Harrison <de@aztek-eng.com>]

On Fri, 14 Nov 1997 20:05:52 EST, Paul Anderson wrote:

>My Kawasaki motorcycle fires every crank revolution shooting a spark
>at the end of the exhaust stroke.  Do any autos with crank fire do this
>or is it too much of a problem given the overlap and subsequent presence
>of fuel charge at the top of the exhaust stroke?

"Wasted spark" ignitions are fairly common on crank timed auto engines.
These systems must obviously work harder and sometimes use multiple
coils.

One other issue regarding the Franco cam gear is the angular range
over which the rotor contact is in good firing position relative to the
distributor contacts. This range must include the electronically
controlled firing angle variations plus those added by the gear. It
would bear investigation.

DeWitt Harrison    de@aztek-eng.com
Boulder, CO
88 5kcstq