REFLECTOR: Spark plug wiring

Scott Derrick scott at tnstaafl.net
Sat Aug 1 08:49:28 CDT 2009


the Rose web site says:

*Which spark plugs should the EIS be put on? All the top plugs, all the
bottom plugs, or some top and some bottom?*
It makes no difference which spark plugs the EIS is connected to.
Approximately 90% of current users have installed the EIS on the bottom
plugs because the hotter spark tends to keep lead from fouling the spark
plugs and becoming a problem. (Bottom plugs have a higher tendency to
fail because of lead fouling).

Scott

Douglas Holub wrote:
> Andy wrote recently that his electronic ignition recommended using the
> lower plugs. I think his is the Rose ignition. All I know is that
> there is no RPM drop when I run my engine with just the top plugs or
> just the bottom plugs. I have dual Lightspeeds.
>
> Doug Holub
> ----- Original Message ----- From: "Scott Derrick" <scott at tnstaafl.net>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Friday, July 31, 2009 7:19 PM
> Subject: REFLECTOR: Spark plug wiring
>
>
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