[WWI] Hispan-Suiza HT wiring, help sought.

[Andy Bannister]

Rob wrote:
> 
> I thought both plugs in a cylinder would have to be fed from the same 
> magneto.

Nope, part of the reason is safety. If both plugs were fed from the same mag
the whole cylinder would go out of action if you lost a magneto. This way
the cylinder would keep firing on one plug if one mag went out. Part of the
pre-flight check is to check the magneto function individually and I'd be
very concerned if one or more cylinders stopped working during that check!

> Wouldn't there be a timing issue between the 2 magnetoes?

Not necessarily. They can be timed to fire at the same time or there could
be a lag between the two to maximise the power & amount of fuel burnt.
Depends on the aircraft.

Andy 
 
CEO, Editor in Chief, Choreographer, Teaboy
www.warpedplastic.co.uk