Today's Message Index:
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1. 06:08 AM - Re: Hard Starting Cont. Engines (AircamperN11MS)
2. 09:42 PM - Re: Hard Starting Cont. Engines (taildrags)
Message 1
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| Subject: | Re: Hard Starting Cont. Engines |
Good morning Oscar,
If your engine truly is flooded (which Im sure it is) this will be a big Ah Ha
moment. It has never failed me.
One other point that hasn't been brought up and I will because someone else brought
up the mags.
An A65 if put together proper only has one impulse coupling. It should be on the
left mag. You should only be starting it on the left mag. If you are experiencing
the prop kicking back and sneezing (if you will, the engine, not you)
I would guess that you are trying to start it with both mags on. I have however
seen engines put together with no impulse couplings or with two couplings.
On experimental airplanes you never know what someone may have done.
A series engine should only have one impulse coupling. (it should be on the left
mag).
C series engines should have two couplings.
O-200 engines should have two couplings.
The impulse couplings will retard the timing and fire the plugs late to prevent
kick back when trying to start.
Some old radials never had impulse couplings. They an be a real bugger to start.
You need to wear your man shoes when starting these.
Oh well, enough for this mornings chat.
Cheers all,
--------
Scott Liefeld
Flying N11MS since March 1972
Steel Tube
C-85-12
Wire Wheels
Brodhead in 1996
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=459834#459834
Message 2
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| Subject: | Re: Hard Starting Cont. Engines |
Scott: oh, no! You're sending me back to my books to read up on Continental ignition
systems! Upper plugs, lower plugs, gapping, timing... I know my mags and
plugs are set up just the way they're supposed to be but I did all of that
work more than a couple of nights ago so I've forgotten it all ;o) Honestly,
I *always* prop start it with the mags on Both, and I believe both of my Slicks
have impulse couplings. However, this is a good time to learn something (and
to teach something) about magneto ignitions, so I'm going to study up and report
back. Meanwhile, we've got a couple of wildland fires burning around us
so I get to watch a lot of round engines fly overhead as the tankers make their
circuits to and from the fires. But I doubt that I could prop-start a P&W Double
Wasp on a Convair 340, with or without impulse couplings ;o)
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power, 72x36 Culver prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=459859#459859
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