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oil thermostats

 
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graham(at)gflight.f9.co.u
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PostPosted: Thu Jan 26, 2006 4:19 pm    Post subject: oil thermostats Reply with quote
Quote:
> But to look at the logic I'm not aware of oil
> circulation being used to cool an engine so in most
> applications ...


This, Bob, is complete rubbish. IMNSHO.


All engines with no water cooling always have an oil
cooler.
Because it is taking heat out of the engine !

I hope your statement was a typo !

Richard

Richard,
you are absolutely right. The only way to keep tyhe pistons cool is to sqirt or splash oil at them.
Graham

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william(at)wrmills.plus.c
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PostPosted: Thu Jan 26, 2006 9:45 pm    Post subject: oil thermostats Reply with quote
I partly agree, Richard and Graham, but not many of the older generation of
motorcycles had an oil cooler.
B w,
William
Do not archive

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hurstkr(at)growzone.com.a
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PostPosted: Fri Jan 27, 2006 12:29 am    Post subject: oil thermostats Reply with quote
Quote:
All engines with no water cooling always have an oil
cooler.


May I respectfully suggest the word "Some" be substituted in place of
"All" in the above and delete "always".

Just a couple of cases in point.

Years ago, I flew a Cessna 172F in my job for 12 years. It had a
Continental O300 engine and NO oil cooler much to my disgust flying in a
hot climate. However, to make the gauge read a lower temp, Cessna in
their wisdom directed a blast of cold air directly onto the temperature
sensor bulb. . . . but of course, this was a CERTIFIED aircraft. No
self respecting home builder would contemplate such a devious device.

Also, what about two stroke motor mowers? I haven't seen an oil cooler
on one of them yet. Haven't seen a water cooled one either come to
think of it !

Ok, I know we are probably referring only to aircraft engines but my
point is, "NEVER say NEVER"

Regs
Kingsley

Do not archive

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graham(at)gflight.f9.co.u
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PostPosted: Fri Jan 27, 2006 1:18 am    Post subject: oil thermostats Reply with quote
I partly agree, Richard and Graham, but not many of the older generation of
motorcycles had an oil cooler.
B w,
William
Do not archive

/William
that's why they used to blow holes in the pistons. My Vincent Black Prince did, so did a friend's Bonneville
Graham/

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ptag.dev(at)tiscali.co.uk
Guest
PostPosted: Fri Jan 27, 2006 4:44 am    Post subject: oil thermostats Reply with quote
Hi! Graham
Don't rub it in !
Hopefully you saw my retraction and explanation leading to my
misconception?
Just out of interest ...on reading the item about shock cooling the guy
made a statement that oil contributes to only 8% of the cooling on an
air cooled engine and 12% from the cooling fins with 44% from the
exhaust pipe.
However he does point out that the 8% is nearly as much as the 12% too.
I guess the remaining 36% goes in general crank case cooling etc.
Regards
Bob Harrison G-PTAG Europa MKI/Jabiru 3300

Do not archive.

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