I was expecting something like this to pop up. Then, there are the radial
aircraft engines, where the directions of "up" and "down" are different for
each cylinder. Or, most idiosyncratically, the old rotary engines, where the
cylinders spun around a stationary crankshaft.
But, generally speaking, in the context of automobile engines, I think our
assumptions about up and down are pretty safe.
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
on 3/25/09 7:32 AM, Bob Howard at mgbob@juno.com wrote:
> More than one might, at first thought, believe.
> Many aviation engines are inverted, as that increases propeller tip
> clearance to the earth.
> Look up the ever popular De Havilland Gypsy II, 4 cylinder, vertical,
> air cooled, in line, direct drive, wet sump, 114mm bore, 140mm stroke,
> 5713 cc, rated 108-110 hp at 2000 rpm. 5.2 compression, weight 298 lbs,
> burning 6.75 gal/hour @2000 rpm and 1.25 pints oil.
> Teasing you a bit--this is information I found in a 1941 book about av
> engines, edited by E. Molloy. Molloy wrote "The well known de Havilland
> range of 'Gipsy' engines are probably as familiar to all aircraft
> engineers as the 'Morris' engines are to the motor-car engineer."
>
> Bob
>
>
>
>
> On Wed, 25 Mar 2009 08:44:27 -0000 "Paul Hunt"
> <paul.hunt1@blueyonder.co.uk> writes:
>> Erm, ask yourself how many engines are installed with the crankshaft
>> above the
>> combustion chamber!
>> ----- Original Message -----
>> This only leave the question of which way is down? From which end
>> of the
>> cylinder is one looking?
>>
>>
>> "A simple way to remember which is the thrust face is that the rod
>> points
>> toward the thrust face on the way down the cylinder. Applies to
>> any engine,
>> inline or V" and I'll add "clockwise or anti-clockwise".
>> _______________________________________________
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