J
Julian Pollard
Guest
Am thinking of fitting one to my 1989 T/D90
Anyone any views or experiences ?
Anyone any views or experiences ?
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
K
Ken Harmes
Guest
I have 2 Kenlowes on my V8 90 and they keep the temp. down ok.What I would
advise is to have a cut off switch for when you go through water,could save
your fan and certainly keeps the engine bay cleaner.
"Julian Pollard" <[email protected]> wrote in message
news:[email protected]...
> Am thinking of fitting one to my 1989 T/D90
>
> Anyone any views or experiences ?
>
>
advise is to have a cut off switch for when you go through water,could save
your fan and certainly keeps the engine bay cleaner.
"Julian Pollard" <[email protected]> wrote in message
news:[email protected]...
> Am thinking of fitting one to my 1989 T/D90
>
> Anyone any views or experiences ?
>
>
R
Richard
Guest
On the subject of elestric fans...at the mo I have twin fans from (I think)
a Peugeot car on my V8 90 with a kenlowe thermostat (and a manual overide
switch on the dash). The fans are mounted between the rad and grill, I had
to move the rad back 1 1/2 inches to fit and they have been great for a
couple of years including a lot of deep water and mud. Now one turns slowly
tho. I have another twin fan here (I think from a Escort Cosworth) and was
thinking of putting the rad back to its origonal position and mounting the
fans between the rad and engine.
Question: Is there any advantage or not to mount them that way or better
between rad and grill?
Thanks
Richard
"Ken Harmes" <[email protected]> wrote in message
news:[email protected]...
>I have 2 Kenlowes on my V8 90 and they keep the temp. down ok.What I would
> advise is to have a cut off switch for when you go through water,could
> save
> your fan and certainly keeps the engine bay cleaner.
> "Julian Pollard" <[email protected]> wrote in message
> news:[email protected]...
>> Am thinking of fitting one to my 1989 T/D90
>>
>> Anyone any views or experiences ?
>>
>>
>
>
a Peugeot car on my V8 90 with a kenlowe thermostat (and a manual overide
switch on the dash). The fans are mounted between the rad and grill, I had
to move the rad back 1 1/2 inches to fit and they have been great for a
couple of years including a lot of deep water and mud. Now one turns slowly
tho. I have another twin fan here (I think from a Escort Cosworth) and was
thinking of putting the rad back to its origonal position and mounting the
fans between the rad and engine.
Question: Is there any advantage or not to mount them that way or better
between rad and grill?
Thanks
Richard
"Ken Harmes" <[email protected]> wrote in message
news:[email protected]...
>I have 2 Kenlowes on my V8 90 and they keep the temp. down ok.What I would
> advise is to have a cut off switch for when you go through water,could
> save
> your fan and certainly keeps the engine bay cleaner.
> "Julian Pollard" <[email protected]> wrote in message
> news:[email protected]...
>> Am thinking of fitting one to my 1989 T/D90
>>
>> Anyone any views or experiences ?
>>
>>
>
>
L
Liam
Guest
"Richard" <richardsemail [email protected]> wrote in message
news:[email protected]...
> On the subject of elestric fans...at the mo I have twin fans from (I
> think) a Peugeot car on my V8 90 with a kenlowe thermostat (and a manual
> overide switch on the dash). The fans are mounted between the rad and
> grill, I had to move the rad back 1 1/2 inches to fit and they have been
> great for a couple of years including a lot of deep water and mud. Now one
> turns slowly tho. I have another twin fan here (I think from a Escort
> Cosworth) and was thinking of putting the rad back to its origonal
> position and mounting the fans between the rad and engine.
> Question: Is there any advantage or not to mount them that way or better
> between rad and grill?
> Thanks
> Richard
Between the rad and engine is the preferred position, on must cars they are
fitted here.
I think the fans are better at pulling air through the rad than pushing,
also when infront of the rad they can restrict the natural flow of air
through the rad.
But what really makes a difference is how close the fans are to the rad,
the closer the better and if they are sealed by a cowling to the rad even
better so all the air from the fan is directed only through the rad and not
blown out to the sides.
Regards
Liam
D
David_LLAMA4x4
Guest
"Julian Pollard" <[email protected]> wrote in message
news:[email protected]...
> Am thinking of fitting one to my 1989 T/D90
>
> Anyone any views or experiences ?
>
>
I sell and more importantly use Kenlowe products myself.....
What is most important if you are fitting one is to fit the right one!! I
know this sounds obvious but I also know of some of the 'big names' in LR
retailing who keep there advertised price very competitive by supplying
cheaper, under rated fans that are simply not up to the job!! Go by the
Kenlowe application guide and not the sales patter of " you can use these
hust as well, it is only a Land Rover after all...' sort of crap!
Woth your specific request relating to a 2.5TD I would err on the side of
caution and stick to a viscous fan - and make sure the viscous unit is
working. These engines are prone to running too hot at every opportunity! If
you are the lucky one with a 2.5 Turbo D that runs at a sensible temperature
then you will need the biggest Kenlowe that fits the rad - about £150
including delivery.....
David
LLAMA 4x4
www.llama4x4.co.uk
G
Gromit
Guest
> Anyone any views or experiences ?
Just to throw something else into the mix,
I've had a Famous Four fan installed for the last 4 months.
I was impressed with it when I got it, the fan is made by Spal.
The temp sensor looks like a pretty well made piece of kit.
It is an in-line pipe, necessitating cutting the lower
rad pipe to fit it. This was the clincher when I was considering
which brand to go with.
Cooling performance on my 200tdi was fine.
Looks though, seem to have been deceiving as this week,
the sensor has packed in, and the fan runs all the time.
I've mailed FF so we'll see what they say.
Gromit
T
T i m
Guest
On Sun, 17 Oct 2004 17:41:07 +0100, Gromit <[email protected]> wrote:
>
>
>> Anyone any views or experiences ?
>
>
Not on a Landy but I'm on my second Kenlowe on the Rickman Ranger (kit
car) in 15 years.
Mine is fitted in the 'push' position (in front of the rad) and I
turned and welded a temp switch collar into the top of the thermostat
housing to take a std temp switch (that in turn drives a relay to
activate the fan).
I took the car out for a shakedown run yesterday (just fitted new road
springs, damper inserts, poly bushes etc) and noticed the temp was
building up. Stopped for a quick check and found the fan was 'stuck'.
I gave it a little push and away it went ;-)
It seems this is something they 'can do' if unused for a while ..?
Apart from that they seem pretty good ;-)
All the best ..
T i m
>
>
>> Anyone any views or experiences ?
>
>
Not on a Landy but I'm on my second Kenlowe on the Rickman Ranger (kit
car) in 15 years.
Mine is fitted in the 'push' position (in front of the rad) and I
turned and welded a temp switch collar into the top of the thermostat
housing to take a std temp switch (that in turn drives a relay to
activate the fan).
I took the car out for a shakedown run yesterday (just fitted new road
springs, damper inserts, poly bushes etc) and noticed the temp was
building up. Stopped for a quick check and found the fan was 'stuck'.
I gave it a little push and away it went ;-)
It seems this is something they 'can do' if unused for a while ..?
Apart from that they seem pretty good ;-)
All the best ..
T i m
T
TVS
Guest
> Mine is fitted in the 'push' position (in front of the rad) and I
> turned and welded a temp switch collar into the top of the thermostat
> housing to take a std temp switch (that in turn drives a relay to
> activate the fan).
> I took the car out for a shakedown run yesterday (just fitted new road
> springs, damper inserts, poly bushes etc) and noticed the temp was
> building up. Stopped for a quick check and found the fan was 'stuck'.
> I gave it a little push and away it went ;-)
>
> It seems this is something they 'can do' if unused for a while ..?
Yes, when a fan is set infront of the rad it get all the damp and salt
chucked up from the road... doesn't to there reliability much good! Also
blocks flow thought the rad under normal driving conditions. Takes me back
to my comuting to Uni days in a Mini - aux. rads over the clutch housing,
overheating in trafic, heater on full for extra cooling,dogey electric fans
and thermostats.... ahhh it was fun
Toby
> turned and welded a temp switch collar into the top of the thermostat
> housing to take a std temp switch (that in turn drives a relay to
> activate the fan).
> I took the car out for a shakedown run yesterday (just fitted new road
> springs, damper inserts, poly bushes etc) and noticed the temp was
> building up. Stopped for a quick check and found the fan was 'stuck'.
> I gave it a little push and away it went ;-)
>
> It seems this is something they 'can do' if unused for a while ..?
Yes, when a fan is set infront of the rad it get all the damp and salt
chucked up from the road... doesn't to there reliability much good! Also
blocks flow thought the rad under normal driving conditions. Takes me back
to my comuting to Uni days in a Mini - aux. rads over the clutch housing,
overheating in trafic, heater on full for extra cooling,dogey electric fans
and thermostats.... ahhh it was fun
Toby
T
T i m
Guest
On Tue, 19 Oct 2004 21:46:45 +0100, "TVS" <[email protected]>
wrote:
>> Mine is fitted in the 'push' position (in front of the rad) and I
>> turned and welded a temp switch collar into the top of the thermostat
>> housing to take a std temp switch (that in turn drives a relay to
>> activate the fan).
>
>> I took the car out for a shakedown run yesterday (just fitted new road
>> springs, damper inserts, poly bushes etc) and noticed the temp was
>> building up. Stopped for a quick check and found the fan was 'stuck'.
>> I gave it a little push and away it went ;-)
>>
>> It seems this is something they 'can do' if unused for a while ..?
>
>Yes, when a fan is set infront of the rad it get all the damp and salt
>chucked up from the road... doesn't to there reliability much good!
Em, I thought the rad was nearly 'transparent' as far as air / water
was concerned so therefore it wouldn't matter if the fan was in front
or behind it?
Also
>blocks flow thought the rad under normal driving conditions.
Again, I see how it might look that way but the blades / body of the
fan would offer the same air resistance whatever side they were on?
eg, the air can only pass *through* the rad if there is nothing on the
other side?
Also, I would of thought it's much easier to blow air 'at' something
than to suck it away from it ...aka a houselold fan? <shrug>? (It's
probably different if it is 'cowelled' )
Takes me back
>to my comuting to Uni days in a Mini - aux. rads over the clutch housing,
>overheating in trafic, heater on full for extra cooling,dogey electric fans
>and thermostats.... ahhh it was fun Toby
Exactly .. it's all too easy and 'remote' these days .. lulls one into
a false sense of security ..
Since I've replaced the front springs and polybushes on the 1300
Ranger it sits a bit higher (till I get the 2L Pinto in there <g>) and
is quite a bit firmer .. before it used to 'float' (like a 2CV) and
now must be more like driving a 2 1/4 Series Landrover .. stiff choppy
ride, feel everything through the wheel, yer back and backside and
with an underpowered engine .. fun aint it ;-)
All the best ..
T i m
wrote:
>> Mine is fitted in the 'push' position (in front of the rad) and I
>> turned and welded a temp switch collar into the top of the thermostat
>> housing to take a std temp switch (that in turn drives a relay to
>> activate the fan).
>
>> I took the car out for a shakedown run yesterday (just fitted new road
>> springs, damper inserts, poly bushes etc) and noticed the temp was
>> building up. Stopped for a quick check and found the fan was 'stuck'.
>> I gave it a little push and away it went ;-)
>>
>> It seems this is something they 'can do' if unused for a while ..?
>
>Yes, when a fan is set infront of the rad it get all the damp and salt
>chucked up from the road... doesn't to there reliability much good!
Em, I thought the rad was nearly 'transparent' as far as air / water
was concerned so therefore it wouldn't matter if the fan was in front
or behind it?
Also
>blocks flow thought the rad under normal driving conditions.
Again, I see how it might look that way but the blades / body of the
fan would offer the same air resistance whatever side they were on?
eg, the air can only pass *through* the rad if there is nothing on the
other side?
Also, I would of thought it's much easier to blow air 'at' something
than to suck it away from it ...aka a houselold fan? <shrug>? (It's
probably different if it is 'cowelled' )
Takes me back
>to my comuting to Uni days in a Mini - aux. rads over the clutch housing,
>overheating in trafic, heater on full for extra cooling,dogey electric fans
>and thermostats.... ahhh it was fun
TobyExactly .. it's all too easy and 'remote' these days .. lulls one into
a false sense of security ..
Since I've replaced the front springs and polybushes on the 1300
Ranger it sits a bit higher (till I get the 2L Pinto in there <g>) and
is quite a bit firmer .. before it used to 'float' (like a 2CV) and
now must be more like driving a 2 1/4 Series Landrover .. stiff choppy
ride, feel everything through the wheel, yer back and backside and
with an underpowered engine .. fun aint it ;-)
All the best ..
T i m
D
David_LLAMA4x4
Guest
"T i m" <[email protected]> wrote in message
news:[email protected]...
> On Tue, 19 Oct 2004 21:46:45 +0100, "TVS" <[email protected]>
> wrote:
>
> >> Mine is fitted in the 'push' position (in front of the rad) and I
> >> turned and welded a temp switch collar into the top of the thermostat
> >> housing to take a std temp switch (that in turn drives a relay to
> >> activate the fan).
> >
> >> I took the car out for a shakedown run yesterday (just fitted new road
> >> springs, damper inserts, poly bushes etc) and noticed the temp was
> >> building up. Stopped for a quick check and found the fan was 'stuck'.
> >> I gave it a little push and away it went ;-)
> >>
> >> It seems this is something they 'can do' if unused for a while ..?
> >
> >Yes, when a fan is set infront of the rad it get all the damp and salt
> >chucked up from the road... doesn't to there reliability much good!
>
> Em, I thought the rad was nearly 'transparent' as far as air / water
> was concerned so therefore it wouldn't matter if the fan was in front
> or behind it?
>
> Also
> >blocks flow thought the rad under normal driving conditions.
>
> Again, I see how it might look that way but the blades / body of the
> fan would offer the same air resistance whatever side they were on?
> eg, the air can only pass *through* the rad if there is nothing on the
> other side?
>
> Also, I would of thought it's much easier to blow air 'at' something
> than to suck it away from it ...aka a houselold fan? <shrug>? (It's
> probably different if it is 'cowelled' )
>
> Takes me back
> >to my comuting to Uni days in a Mini - aux. rads over the clutch housing,
> >overheating in trafic, heater on full for extra cooling,dogey electric
fans
> >and thermostats.... ahhh it was fun
Toby>
> Exactly .. it's all too easy and 'remote' these days .. lulls one into
> a false sense of security ..
>
> Since I've replaced the front springs and polybushes on the 1300
> Ranger it sits a bit higher (till I get the 2L Pinto in there <g>) and
> is quite a bit firmer .. before it used to 'float' (like a 2CV) and
> now must be more like driving a 2 1/4 Series Landrover .. stiff choppy
> ride, feel everything through the wheel, yer back and backside and
> with an underpowered engine .. fun aint it ;-)
>
> All the best ..
>
> T i m
A fan is far more efficient at drawing air through the radiater from behind
than blowing it from the front by some margin - the airflow through the rad
will be considerably greater if the fan is placed as close to the rad as
poss on the engine side.
David
LLAMA4x4
www.llama4x4.co.uk
A
Austin Shackles
Guest
On or around Wed, 20 Oct 2004 00:09:58 +0100, "David_LLAMA4x4"
<[email protected]> enlightened us thusly:
> A fan is far more efficient at drawing air through the radiater from behind
>than blowing it from the front by some margin - the airflow through the rad
>will be considerably greater if the fan is placed as close to the rad as
>poss on the engine side.
and ducted TAAW - that ducting on the original fitment is not only there to
stop you getting yer hand in the blades. some of the electric ones have a
kind of ring around the periphery - I dunno if that does the same job, or if
so, whether it does it as well.
<[email protected]> enlightened us thusly:
> A fan is far more efficient at drawing air through the radiater from behind
>than blowing it from the front by some margin - the airflow through the rad
>will be considerably greater if the fan is placed as close to the rad as
>poss on the engine side.
and ducted TAAW - that ducting on the original fitment is not only there to
stop you getting yer hand in the blades. some of the electric ones have a
kind of ring around the periphery - I dunno if that does the same job, or if
so, whether it does it as well.
T
T i m
Guest
On Wed, 20 Oct 2004 00:09:58 +0100, "David_LLAMA4x4"
<[email protected]> wrote:
Hi David,
> A fan is far more efficient at drawing air through the radiater from behind
>than blowing it from the front by some margin -
<Devils advocate mode on> Whilst I believe you are probably right, do
you have any links to the theory behind this please David?
the airflow through the rad
>will be considerably greater if the fan is placed as close to the rad as
>poss on the engine side.
My Kenlowe is about 2mm from the front of the rad and the same
diameter as the rad is wide. It was actually easier for me to fit it
in front of the rad at the time and is about 6" behind the front
grille so has a fairly clean input airflow (another reason why I'm not
convinced about the 'pull' idea .. put your hand near the top of an PC
CPU fan and hear it rev up as it cavitates .. and why are all the CPU
fans in 'push' mode when it would be so easy to turn them over ..?)
I can see how fans would *be* behind the rad as a hangover of the
mechanical driven fan days ('that's where the old one was so that's
where we will put the electric one' sorta thing).
The viscous coupled fan on the Sierra still seems to work after 22
years .(therefore not sure why folk don't like them), never had it
overheat even when towing heavy things in the height of the summer ..
<mode off>
Just thinking out loud .. ;-)
All the best ..
T i m
<[email protected]> wrote:
Hi David,
> A fan is far more efficient at drawing air through the radiater from behind
>than blowing it from the front by some margin -
<Devils advocate mode on> Whilst I believe you are probably right, do
you have any links to the theory behind this please David?
the airflow through the rad
>will be considerably greater if the fan is placed as close to the rad as
>poss on the engine side.
My Kenlowe is about 2mm from the front of the rad and the same
diameter as the rad is wide. It was actually easier for me to fit it
in front of the rad at the time and is about 6" behind the front
grille so has a fairly clean input airflow (another reason why I'm not
convinced about the 'pull' idea .. put your hand near the top of an PC
CPU fan and hear it rev up as it cavitates .. and why are all the CPU
fans in 'push' mode when it would be so easy to turn them over ..?)
I can see how fans would *be* behind the rad as a hangover of the
mechanical driven fan days ('that's where the old one was so that's
where we will put the electric one' sorta thing).
The viscous coupled fan on the Sierra still seems to work after 22
years .(therefore not sure why folk don't like them), never had it
overheat even when towing heavy things in the height of the summer ..
<mode off>
Just thinking out loud .. ;-)
All the best ..
T i m
A
Austin Shackles
Guest
On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
enlightened us thusly:
>and why are all the CPU
>fans in 'push' mode when it would be so easy to turn them over ..?)
so they don't suck crud into the PSU. Mind, they suck crud into the rest of
the case instead...
enlightened us thusly:
>and why are all the CPU
>fans in 'push' mode when it would be so easy to turn them over ..?)
so they don't suck crud into the PSU. Mind, they suck crud into the rest of
the case instead...
P
Paul S. Brown
Guest
Austin Shackles wrote:
> On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
> enlightened us thusly:
>
>>and why are all the CPU
>>fans in 'push' mode when it would be so easy to turn them over ..?)
>
> so they don't suck crud into the PSU. Mind, they suck crud into the rest
> of the case instead...
Also so that if they're the only cooling in the case they create a slight
negative pressure, which due to the the laws of physics gives a slight
cooling effect (make a gas less dense, it cools - compress it and it heats)
Another reason to have the fan mounted behind the radiator sucking perhaps?
P.
--
If Mind over Matter is a Matter of Course
Does it Matter if Nobody Minds?
> On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
> enlightened us thusly:
>
>>and why are all the CPU
>>fans in 'push' mode when it would be so easy to turn them over ..?)
>
> so they don't suck crud into the PSU. Mind, they suck crud into the rest
> of the case instead...
Also so that if they're the only cooling in the case they create a slight
negative pressure, which due to the the laws of physics gives a slight
cooling effect (make a gas less dense, it cools - compress it and it heats)
Another reason to have the fan mounted behind the radiator sucking perhaps?
P.
--
If Mind over Matter is a Matter of Course
Does it Matter if Nobody Minds?
T
T i m
Guest
On Wed, 20 Oct 2004 19:30:41 +0100, Austin Shackles
<[email protected]> wrote:
>On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
>enlightened us thusly:
>
>>and why are all the CPU
>>fans in 'push' mode when it would be so easy to turn them over ..?)
>
>so they don't suck crud into the PSU. Mind, they suck crud into the rest of
>the case instead...
I take it you are thinking of the PSU fan whereas I was talking about
the CPU fan (the one that normally sits on top of the heatsink and
*blows* air through it)?
I'm still confused .. If I burn my finger I don't put my mouth near it
and try to suck the air past it to cool it ..?
All the best ..
T i m
<[email protected]> wrote:
>On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
>enlightened us thusly:
>
>>and why are all the CPU
>>fans in 'push' mode when it would be so easy to turn them over ..?)
>
>so they don't suck crud into the PSU. Mind, they suck crud into the rest of
>the case instead...
I take it you are thinking of the PSU fan whereas I was talking about
the CPU fan (the one that normally sits on top of the heatsink and
*blows* air through it)?
I'm still confused .. If I burn my finger I don't put my mouth near it
and try to suck the air past it to cool it ..?
All the best ..
T i m
T
T i m
Guest
On Wed, 20 Oct 2004 19:46:01 +0100, "Paul S. Brown"
<[email protected]> wrote:
>Austin Shackles wrote:
>
>> On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
>> enlightened us thusly:
>>
>>>and why are all the CPU
>>>fans in 'push' mode when it would be so easy to turn them over ..?)
>>
>> so they don't suck crud into the PSU. Mind, they suck crud into the rest
>> of the case instead...
>
>Also so that if they're the only cooling in the case they create a slight
>negative pressure, which due to the the laws of physics gives a slight
>cooling effect (make a gas less dense, it cools - compress it and it heats)
Again I take it you are talking about the PSU fan? The CPU fan would
only circulate air round *inside* the case after it had been blown
over the CPU heatsink. I was saying if 'sucking' was as easy /
efficient they would supply those fans fitted the other way up (same 4
screws, same four holes etc)?
>
>Another reason to have the fan mounted behind the radiator sucking perhaps?
Or prehaps not! ;-)
Experiment ... stand 20m in front of a running jet engine then stand
20m behind .... if you can ...?
All the best ..
T i m
<[email protected]> wrote:
>Austin Shackles wrote:
>
>> On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
>> enlightened us thusly:
>>
>>>and why are all the CPU
>>>fans in 'push' mode when it would be so easy to turn them over ..?)
>>
>> so they don't suck crud into the PSU. Mind, they suck crud into the rest
>> of the case instead...
>
>Also so that if they're the only cooling in the case they create a slight
>negative pressure, which due to the the laws of physics gives a slight
>cooling effect (make a gas less dense, it cools - compress it and it heats)
Again I take it you are talking about the PSU fan? The CPU fan would
only circulate air round *inside* the case after it had been blown
over the CPU heatsink. I was saying if 'sucking' was as easy /
efficient they would supply those fans fitted the other way up (same 4
screws, same four holes etc)?
>
>Another reason to have the fan mounted behind the radiator sucking perhaps?
Or prehaps not! ;-)
Experiment ... stand 20m in front of a running jet engine then stand
20m behind .... if you can ...?
All the best ..
T i m
A
Austin Shackles
Guest
On or around Thu, 21 Oct 2004 00:14:59 GMT, T i m <[email protected]>
enlightened us thusly:
>On Wed, 20 Oct 2004 19:30:41 +0100, Austin Shackles
><[email protected]> wrote:
>
>>On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
>>enlightened us thusly:
>>
>>>and why are all the CPU
>>>fans in 'push' mode when it would be so easy to turn them over ..?)
>>
>>so they don't suck crud into the PSU. Mind, they suck crud into the rest of
>>the case instead...
>
>I take it you are thinking of the PSU fan whereas I was talking about
>the CPU fan (the one that normally sits on top of the heatsink and
>*blows* air through it)?
>
>I'm still confused .. If I burn my finger I don't put my mouth near it
>and try to suck the air past it to cool it ..?
>
>All the best ..
yes, I was thinking PSU.
but the thing about fingers and also about jet engines isn't a fair analogy.
in the former case you alter your mouth shape to produce a small directed
stream of air, while in the latter case, there's the small matter of several
lbs per second of jet fuel being burnt in between the input and the output.
enlightened us thusly:
>On Wed, 20 Oct 2004 19:30:41 +0100, Austin Shackles
><[email protected]> wrote:
>
>>On or around Wed, 20 Oct 2004 08:03:59 GMT, T i m <[email protected]>
>>enlightened us thusly:
>>
>>>and why are all the CPU
>>>fans in 'push' mode when it would be so easy to turn them over ..?)
>>
>>so they don't suck crud into the PSU. Mind, they suck crud into the rest of
>>the case instead...
>
>I take it you are thinking of the PSU fan whereas I was talking about
>the CPU fan (the one that normally sits on top of the heatsink and
>*blows* air through it)?
>
>I'm still confused .. If I burn my finger I don't put my mouth near it
>and try to suck the air past it to cool it ..?
>
>All the best ..
yes, I was thinking PSU.
but the thing about fingers and also about jet engines isn't a fair analogy.
in the former case you alter your mouth shape to produce a small directed
stream of air, while in the latter case, there's the small matter of several
lbs per second of jet fuel being burnt in between the input and the output.
T
Tim Hobbs
Guest
>
>Experiment ... stand 20m in front of a running jet engine then stand
>20m behind .... if you can ...?
>
A very flawed analogy - the whole point of a jet engine is to
accelerate the air between inlet and outlet by burning fuel. No one
is suggesting a radiator fan that burns fuel....
--
Tim Hobbs
'58 Series 2 88" aka "Stig"
'77 101FC Ambulance aka "Burrt"
'03 Volvo V70
My Landies? http://www.seriesii.co.uk
Barcoding? http://www.bartec-systems.com
Tony Luckwill web archive at http://www.luckwill.com
T
T i m
Guest
On Thu, 21 Oct 2004 07:23:05 +0100, Austin Shackles
<[email protected]> wrote:
>>>>and why are all the CPU
>>>>fans in 'push' mode when it would be so easy to turn them over ..?)
>>>
>>>so they don't suck crud into the PSU. Mind, they suck crud into the rest of
>>>the case instead...
>>
>>I take it you are thinking of the PSU fan whereas I was talking about
>>the CPU fan (the one that normally sits on top of the heatsink and
>>*blows* air through it)?
>>
>>I'm still confused .. If I burn my finger I don't put my mouth near it
>>and try to suck the air past it to cool it ..?
>>
>>All the best ..
>
>yes, I was thinking PSU.
Well that's a sorta 'ducted' system isn't it so I don't think it
matters much if it's push or pull? On some of the early ATX cases they
had the PSU fan extracting air from the PSU and also blowing over the
CPU (sometimes the only form of cooling for the CPU). The problem was
if the user turned the case on it's edge (to make ot a 'tower' case)
the fan was working against the natural thermal convection within the
case.
>
>but the thing about fingers and also about jet engines isn't a fair analogy.
Doh! ;-)
>
>in the former case you alter your mouth shape to produce a small directed
>stream of air, while in the latter case, there's the small matter of several
>lbs per second of jet fuel being burnt in between the input and the output.
Ah, but apart from *that* ... <damn he's good ..> ;-)
All the best ..
T i m
(RWD and fans that blow)
<[email protected]> wrote:
>>>>and why are all the CPU
>>>>fans in 'push' mode when it would be so easy to turn them over ..?)
>>>
>>>so they don't suck crud into the PSU. Mind, they suck crud into the rest of
>>>the case instead...
>>
>>I take it you are thinking of the PSU fan whereas I was talking about
>>the CPU fan (the one that normally sits on top of the heatsink and
>>*blows* air through it)?
>>
>>I'm still confused .. If I burn my finger I don't put my mouth near it
>>and try to suck the air past it to cool it ..?
>>
>>All the best ..
>
>yes, I was thinking PSU.
Well that's a sorta 'ducted' system isn't it so I don't think it
matters much if it's push or pull? On some of the early ATX cases they
had the PSU fan extracting air from the PSU and also blowing over the
CPU (sometimes the only form of cooling for the CPU). The problem was
if the user turned the case on it's edge (to make ot a 'tower' case)
the fan was working against the natural thermal convection within the
case.
>
>but the thing about fingers and also about jet engines isn't a fair analogy.
Doh! ;-)
>
>in the former case you alter your mouth shape to produce a small directed
>stream of air, while in the latter case, there's the small matter of several
>lbs per second of jet fuel being burnt in between the input and the output.
Ah, but apart from *that* ... <damn he's good ..> ;-)
All the best ..
T i m
(RWD and fans that blow)
T
T i m
Guest
On Thu, 21 Oct 2004 08:20:08 +0100, Tim Hobbs
<[email protected]> wrote:
>
>>
>>Experiment ... stand 20m in front of a running jet engine then stand
>>20m behind .... if you can ...?
>>
>A very flawed analogy - the whole point of a jet engine is to
>accelerate the air between inlet and outlet by burning fuel. No one
>is suggesting a radiator fan that burns fuel....
Indeed .. I can see I can't get anything past you guys (worth a go
though) ;-)
Still, fuel or otherwise does the jet engine suck or blow it's self
forward ... ?
All the best ..
T i m
<[email protected]> wrote:
>
>>
>>Experiment ... stand 20m in front of a running jet engine then stand
>>20m behind .... if you can ...?
>>
>A very flawed analogy - the whole point of a jet engine is to
>accelerate the air between inlet and outlet by burning fuel. No one
>is suggesting a radiator fan that burns fuel....
Indeed .. I can see I can't get anything past you guys (worth a go
though) ;-)
Still, fuel or otherwise does the jet engine suck or blow it's self
forward ... ?
All the best ..
T i m
