REFLECTOR: IO-360 / Mag Timing?

[Patrick Sieders]

Kevin,

There is two ways to do it. And it all depends on if the magneto was removed
or not.

1.	at an inspection, since the spark plugs are removed, that will make
the prop much easier to turn (no compression). This is by far the best way.
2.	If the magneto is being replaced onto the engine, the cap with the
sparkplug cables is not on, and then find compression stroke on cylinder #1
by removing only that spark plug (one of the two). 

Then time it. I used to time it back and forth, since there is some play.
But I would make certain that the magneto is set deadon on the correct
rotation direction of your engine. First time the left magneto, then match
the right.

Now, your question actually sounded like you asked the inside timing of the
mag.. but the next sentence refered to timing on engine. So hopefully this
is what you wanted, otherwise I can explain a little more about the internal
timing later.

Hope it helps !
Patrick Sieders
Nashville TN
Velocity XLFG-5


-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Kevin Baker
Sent: Wednesday, September 12, 2012 12:55 AM
To: 'Velocity Aircraft Owners and Builders list'
Subject: REFLECTOR: IO-360 / Mag Timing?

Hi All,
Ok.. this may be an easy question but I just can't figure it out.
How does one adjust the timing on the mag?
Ok.. I know you install the mag TDC, etc but how does one utilize the timing
light without getting hurt by the prop?

Maybe it's easy - I'm just having trouble figuring this one out.

Thanks,
Kevin Baker
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