REFLECTOR: IO-360 / Mag Timing?

[Kevin Baker]

Great instructions
Will not be lazy... A&p working with me on this also.

Thank you do much - I feel much better now knowing the engine would not be running .

I was thinking back to the auto distributor days.

Thanks everyone
Kevin Baker

.

On Sep 12, 2012, at 11:02 AM, Scott Derrick <scott at tnstaafl.net> wrote:

> No, no.
> 
> Install the mag, remove the top plugs(don't be lazy do it).
> 
> Setup your marks do you can tell when you are the correct degrees before TDC for your mag.  See your engine manual for this.
> 
> Rotate the engine so its before the timing point(this will be just before TDC for #1 cyl).  If its an impulse mag trigger the impluse, then back up past the point.
> 
> Connect your mag timing box to the mag.(MAG switch ON!, be carefull!)
> 
> move the prop so it is on the mark
> 
> A) Now turn the mag so the light/noise just comes on. (initial setting)
> 
> B) rotate the prop back so the noise/light goes out, plus 10 degrees.
> 
> C) slowly bring the prop forward, stop when the light/noise comes on, see if you are on the mark. If not adjust the mag(little bit!).  repeat steps B&C until the noise/light comes on right when the on mark as you rotate the prop.
> 
> D) tighten down the mag, recheck!!!
> 
> Do the other mag if you have two.
> 
> Scott
> 
> 
> -------- Original Message --------
> Subject: Re: REFLECTOR: IO-360 / Mag Timing?
> From: Kevin Baker <flykb at verizon.net>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Date: 09/12/2012 07:35 AM
> 
>> Oh   So you don't do any timing with the engine running or with a light?
>> You just set the mag with the pin to the engine flywheel timing mark and your done. Nothing else ?
>> I thought there was something about rotating the mag to adjust something.
>> A local ap was talking about a timing light so that started to confuse me.
>> 
>> Thanks
>> Kevin Baker
>> 
>> .
>> 
>> On Sep 12, 2012, at 8:17 AM, "Patrick Sieders" <pjsieders at comcast.net> wrote:
>> 
>>> 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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> 
> -- 
> It is a miracle that curiosity survives formal education.
> Albert Einstein
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