Today's Message Index:
----------------------
1. 07:46 AM - lycoming dual mag D engine alternative mag question (CardinalNSB@aol.com)
2. 03:12 PM - lycoming dual mag D engine alternative mag question (Archie)
3. 06:32 PM - Archie -- stroked O-200? (jrc)
4. 07:01 PM - Re: Archie -- stroked O-200? (Archie)
Message 1
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| Subject: | lycoming dual mag D engine alternative mag question |
I got a D engine O-320 H2AD as part of a project, in good condition, already
mounted so I want to keep it. It needs a mag rebuild. This is the "D" mag,
dual drive, allegedly more failure prone because of a common drive gear.
1. any recommendations on upgrades to the D mag while still keeping the D
mag engine certified
2. any information/recommendations on using a "crank trigger" ignition as
the source for firing the second set of plugs? from what I read in hot rod
magazine these are old hat in big hp stressed engines, maybe a Megasquirt with
4 separate coils? This would avoid the single point failure of the drive
gear, and would be fun to play with timing changes.
I'll keep the carb for now.
Is there an easy conversion to use a single regular mag driven off the
accessory case?
While I am here, what is the latest information re roller cam followers for
this engine, there is no T modification done to this engine.
This is in an experimental so I could ....
Thanks for any help, Skip Simpson
Message 2
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| Subject: | lycoming dual mag D engine alternative mag question |
----- Original Message -----
From: CardinalNSB@aol.com
To: engines-list@matronics.com
Sent: Thursday, January 18, 2007 10:45 AM
Subject: Engines-List: lycoming dual mag D engine alternative mag
question
I got a D engine O-320 H2AD as part of a project, in good condition,
already mounted so I want to keep it. It needs a mag rebuild. This is
the "D" mag, dual drive, allegedly more failure prone because of a
common drive gear.
1. any recommendations on upgrades to the D mag while still keeping
the D mag engine certified
2. any information/recommendations on using a "crank trigger"
ignition as the source for firing the second set of plugs? from what I
read in hot rod magazine these are old hat in big hp stressed engines,
maybe a Megasquirt with 4 separate coils? This would avoid the single
point failure of the drive gear, and would be fun to play with timing
changes.
I converted an O-200 to full msd crank trigger years ago. Took a bit
of work, but certainly worth it. Easier starting, more accurate timing,
(off the crank), and no sloppy gears,
plus plug gaps of .080 Megasquirt with individual coils is also a
viable alternative.
Archie
I'll keep the carb for now.
Is there an easy conversion to use a single regular mag driven off the
accessory case?
While I am here, what is the latest information re roller cam
followers for this engine, there is no T modification done to this
engine.
This is in an experimental so I could ....
Thanks for any help, Skip Simpson
Message 3
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| Subject: | Archie -- stroked O-200? |
Archie, would it be possible to stroke an experimental O-200, and if so,
about how much?
JimC
----- Original Message -----
From: Archie
To: engines-list@matronics.com
Sent: Thursday, January 18, 2007 5:09 PM
Subject: Engines-List: lycoming dual mag D engine alternative mag
question
Message 4
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| Subject: | Re: Archie -- stroked O-200? |
----- Original Message -----
From: jrc
To: engines-list@matronics.com
Sent: Thursday, January 18, 2007 9:31 PM
Subject: Engines-List: Archie -- stroked O-200?
Archie, would it be possible to stroke an experimental O-200, and if
so, about how much?
JimC
Yes, but it requires custom pistons, and the overall cost would not be
worth it.
I did a special O-200 that produced 161hp at 2700. (stock stroke)
For what it cost to develop, the customer could have bought a brand
new
O-360 engine and then some.
Archie
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