[elky] Re: [non] Engines (was re: Fwd: Response to a car dealer)
- From: Chris Lindh <chris@xxxxxxxxxxxxxxxxx>
- To: elky@xxxxxxxxxxxxx
- Date: Tue, 2 Nov 2010 11:24:38 -0400
That is a gigantic 4 cylinder. I would think even though it is
opposed you would get a fair amount of vibration.
On Tue, Nov 2, 2010 at 11:20 AM, Jared Ryan <jryan@xxxxxxxxxxxx> wrote:
> Speaking of Dodge, this is tangential, but I was just browsing yesterday,
> being my curious self, and came upon the specifications for the Lycoming
> engine used in the Cessna 172 I got to fly.
>
> Four-cylinder opposed air-cooled engine, not unlike a VW, but 5.9L
> displacement. WOW. 160 HP. Not a powerful engine but strong torque. A
> propellor is tough to spin (it is also the engine's flywheel).
>
> I understand now why the redline is at about 2500 RPM and you tend to cruise
> at about 2200. I was thinking at the time, "That is really slow for having
> four cylinders", but I didn't realize it had the same displacement as the
> Cummins six-cylinder used in Dodge pickups.
>
> I also see why it has two spark plugs per cylinder. Redundancy, yes, but the
> bore is over 5". You need two spark plugs to light the mixture completely.
> If you run on only one magneto (so only one plug per cylinder is firing),
> the engine slows down 200-300 RPM.
>
> Part of the pre-flight is to run up the engine to full throttle and switch to
> only one magneto, then to the other, to check for a fouled spark plug. We
> had one before our flight, and leaning out the mixture for a few moments
> corrected it.
>
>
> On Nov 2, 2010, at 10:07 AM, Chris Lindh wrote:
>
>> Congrats on paying off the Honda. We've got a ways to go... we're
>> loving the Dodge.
Rules: Please play nicely with others.
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