Group: aus.aviation · Group Profile
Author: CoopCoop Date: Apr 8, 2008 01:18
On Tue, 8 Apr 2008 14:12:47 +1000, "SR20GOER"
aopa.com.au> wrote:
>
>"Coop" chariotnose.netwheel.au> wrote in message
>news:s69lv3h4v447h7g8963tk2sie25b7gol1f@4ax.com...>> Came across this in the latest edition of Flight Safety, from Dick
>> Gower. It's a part of the QBE safety promotion inside the back cover:
>
>>
>> This relates to the discussion we had some time back about whether or
>> not to check individual magnetos as part of the trouble check when
>> experiencing rough running. Seems like Dick is firmly in the school of
>> thinking that says you should do it. No mention of the possibility of
>> total engine failure as a result of doing this check. Next time I see
>> him I'll ask him about this. He's been around aviation quite a bit
>> longer than I have.
>>
>> Coop
>
>Coop
>I will be seeing him at the next Vic RAPAC as usual and have it on my items
>to talk to him about as I too noted it - but have never seen it in practice.
>My mate from AF Mag and I looked up the details and it makes sense, Sounds
>a bit like a fibre half speed wheel of similar strength to the old Holden
>timing cogs that used to strip without warning. Not sure how a metal cog
>would fail but Dick's knowledge is based on plenty of experience..
Interesting comment- about not seeing it in practice. Do you mean now,
or in the past? IT was certainly part of my training- Step one was
change tanks (the most likely cause of a faltering engine), next step
was set up the glide and select a landing place, then get into the
checks and the maggie check was the first up- trying each magneto
individually. Of course, all this was scrubbed if there was a conrod
hanging out the side of the cowling or some other equally obvious
terminal failure.
>
>On a separate but related topic mate turned the prop on a 6 cyl last Sat
>prior departure as part of pre-flight then later found no mag drop on one
>mag during his run ups so concludes he is very fortunate nothing happened
>earlier as the prop was effectively "live".
Yep. As RT says, I was taught to treat the prop as always being live,
but its oh so easy to get complacent. I'm extra cautious with Gypsies
tho'- our method of shutting them down (ignition off and open the
throttle) leaves them even more likely to go "pop"...
>cheers
>Brian
>
Regards
Coop
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