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Author Topic: Washer Jets  (Read 2475 times)

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unlucky mark mv6

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Re: Washer Jets
« Reply #15 on: 03 January 2010, 20:24:04 »

Quote
Nozzles might be heated but the pipes to them are not .... so you still get ice in the pipes which stops/reduces flow....

If they were going to heat the nozzles why not go the whole hog and heat the pipes as well ???  not rocket science .. :(
But surely the heat from the engine would thaw them out,especially from a 3.0 :-/
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Entwood

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Re: Washer Jets
« Reply #16 on: 03 January 2010, 20:30:01 »

Doesnt have to be fancy or hot .. so a long thin element inside the length of the feed pipe, just enough current to raise the temp say 10 degrees ?? maybe even 5.

I doubt the pipes themselves hold more than 10 CC of water.... to raise 1CC by 1 degree takes aproximately 4 joules, so to raise 10 cc by 5 degrees is 200 joules .. 1 joule/minute is 0.02 watts.....   so if you did that in 1 minute it would only require 4 watts/minute or 4/12 amps ... 1/3 amp !!! or 2/3 an amp to raise it 10 degrees .

You don't need to heat any more than the pipe water as the large mass of water in the tank rarely freezes.. it is the small mass in the pipe that is affected.

:)
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Andy B

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Re: Washer Jets
« Reply #17 on: 03 January 2010, 20:32:02 »

Quote
........
to raise 1CC by 1 degree takes aproximately 4 joules, so to raise 10 cc by 5 degrees is 200 joules .. 1 joule/minute is 0.02 watts.....   so if you did that in 1 minute it would only require 4 watts/minute or 4/12 amps ... 1/3 amp !!! or 2/3 an amp to raise it 10 degrees . ......

I'm impressed that you knew where to start with the maths/physics!  ;)  ;)  ;)
« Last Edit: 03 January 2010, 20:32:26 by Andy_B »
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unlucky mark mv6

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Re: Washer Jets
« Reply #18 on: 03 January 2010, 20:32:59 »

Quote
Doesnt have to be fancy or hot .. so a long thin element inside the length of the feed pipe, just enough current to raise the temp say 10 degrees ?? maybe even 5.

I doubt the pipes themselves hold more than 10 CC of water.... to raise 1CC by 1 degree takes aproximately 4 joules, so to raise 10 cc by 5 degrees is 200 joules .. 1 joule/minute is 0.02 watts.....   so if you did that in 1 minute it would only require 4 watts/minute or 4/12 amps ... 1/3 amp !!! or 2/3 an amp to raise it 10 degrees .

You don't need to heat any more than the pipe water as the large mass of water in the tank rarely freezes.. it is the small mass in the pipe that is affected.

:)
oooooh,somebody done his maths at school. ;D ;D ;)
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Entwood

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Re: Washer Jets
« Reply #19 on: 03 January 2010, 20:38:34 »

Quote
Quote
........
to raise 1CC by 1 degree takes aproximately 4 joules, so to raise 10 cc by 5 degrees is 200 joules .. 1 joule/minute is 0.02 watts.....   so if you did that in 1 minute it would only require 4 watts/minute or 4/12 amps ... 1/3 amp !!! or 2/3 an amp to raise it 10 degrees . ......

I'm impressed that you knew where to start with the maths/physics!  ;)  ;)  ;)


A level maths & physics, degree in maths & computing , but most importantly .. my "basic" RAF training as an Air Engineer... in the days when you were not allowed to touch anything until you had proved you both knew and understood the theory behind how and why it worked.

Taught by hairy old Master Engineers, Warrant Officers and Chief Technicians whose prime purpose in life, we thought, was to prove beyond doubt just how stupid we all were.

The amazing fact is; not only did I somehow pass the course but 30 odd years later I was one of those Master Engineers giving the new generation a hard time ....   :)

Loved it, and am still surprised by how much I remember... they taught us well in them days .. :)
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Andy B

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Re: Washer Jets
« Reply #20 on: 03 January 2010, 20:44:49 »

Quote
Quote
Quote
........
to raise 1CC by 1 degree takes aproximately 4 joules, so to raise 10 cc by 5 degrees is 200 joules .. 1 joule/minute is 0.02 watts.....   so if you did that in 1 minute it would only require 4 watts/minute or 4/12 amps ... 1/3 amp !!! or 2/3 an amp to raise it 10 degrees . ......

I'm impressed that you knew where to start with the maths/physics!  ;)  ;)  ;)


A level maths & physics, degree in maths & computing , but most importantly .. my "basic" RAF training as an Air Engineer... in the days when you were not allowed to touch anything until you had proved you both knew and understood the theory behind how and why it worked.

Taught by hairy old Master Engineers, Warrant Officers and Chief Technicians whose prime purpose in life, we thought, was to prove beyond doubt just how stupid we all were.

The amazing fact is; not only did I somehow pass the course but 30 odd years later I was one of those Master Engineers giving the new generation a hard time ....   :)

Loved it, and am still surprised by how much I remember... they taught us well in them days .. :)

I'm suitably impressed!
I can remember the value & colours for resistors but not allowed to use the aid memoir anymore in these PC times!  :-[  :-[  :-[  ;)
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Entwood

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Re: Washer Jets
« Reply #21 on: 03 January 2010, 20:48:42 »

is that the one that starts

Bad Boys Ravage Only Young Girls ....  ?? for 0,1,2,3,4,5 ....   etc etc  :)
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TheBoy

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Re: Washer Jets
« Reply #22 on: 03 January 2010, 20:51:02 »

washer only, as they are in airflow (1C for every 10mph iirc), and a narrow channel.  The tubes won't freeze any more than the bottle.
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Re: Washer Jets
« Reply #23 on: 03 January 2010, 20:54:09 »

Nyway, back to the topic, did you ever find out what it was? My drivers side jet has one jet clogged as well and I have been to lazy to check it out . . . . . . .
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Andy B

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Re: Washer Jets
« Reply #24 on: 03 January 2010, 20:55:04 »

Quote
is that the one that starts

Bad Boys Ravage Only Young Girls ....  ?? for 0,1,2,3,4,5 ....   etc etc  :)

That must be the recent PC version but did the virgins still go without?  ;D  ;D  ;D
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Entwood

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Re: Washer Jets
« Reply #25 on: 03 January 2010, 21:00:19 »

Quote
Quote
is that the one that starts

Bad Boys Ravage Only Young Girls ....  ?? for 0,1,2,3,4,5 ....   etc etc  :)

That must be the recent PC version but did the virgins still go without?  ;D  ;D  ;D

No .......  But Violet Gave Willingly (for Silver or Gold) ....   :)
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Andy B

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Re: Washer Jets
« Reply #26 on: 03 January 2010, 21:02:19 »

Quote
Quote
Quote
is that the one that starts

Bad Boys Ravage Only Young Girls ....  ?? for 0,1,2,3,4,5 ....   etc etc  :)

That must be the recent PC version but did the virgins still go without?  ;D  ;D  ;D

No .......  But Violet Gave Willingly (for Silver or Gold) ....   :)

 ;D ;D ;D I'll have to try to remember that version!  :y
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Entwood

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Re: Washer Jets
« Reply #27 on: 03 January 2010, 21:06:00 »

The human brain is really most odd ... I can remember crap like that from 1970 that I haven't used .. along with SOC CAH TOA and other such nefarious things ...  but I forget where I've left me keys 5 minutes ago !!

Ain't old age fun !!!   :)
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Humpy

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Re: Washer Jets
« Reply #28 on: 03 January 2010, 22:01:18 »

SOH CAH TOA? Isn't that east of Java ;D Sine=Opposite over Hypoteneuse, Cosine=Adjacent over Hypoteneuse, Tangent=Opposite over Adjacent Yeah I remember that. S'funny what sticks in your mind. Telecoms cable colour code, Watneys Red Barrel Yuk Violently-White Red Black Yellow Violet. And why was grey always Slate? Sorry gone right off topic.

Humpy
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Andy B

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Re: Washer Jets
« Reply #29 on: 03 January 2010, 22:05:41 »

Quote
.....

Ain't old age fun !!!   :)


I'll let you know!!!!  ;D  ;D  ;D  ;D  ;D :y
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