Bull ! (dust)

Submitted: Friday, Apr 28, 2006 at 11:07
ThreadID: 33321 Views:2589 Replies:9 FollowUps:18
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I first met the stuff when my old series 2 threw a rear window. I noticed the windscreen was getting a tad difficult to see through ! Once drove an FJ55v into a patch and the world turned white, that stuff clogged the airfilter etc. I can remember taping up the entire rear to try and stop it...to no avail. Found out later that I had a rust hole under a back wheel. No wonder the missus complained :)
The 80 series fixed most of the ingress of un needed "play misty for me". But for some reason the cargo area still gets its share.
Now I've always believed that you put the air con on recycling high to pressurize the cabin. I've been told differently. I've also been told to tape up the rear vents (wherever they are..).
How much dust do YOU have to live with ? What's best ? Recycling or external air ?
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Reply By: Member - Beatit (QLD) - Friday, Apr 28, 2006 at 11:16

Friday, Apr 28, 2006 at 11:16
Well Footy, I have had no luck keeping the stuff out of my vehicles. I have heard it said that taping the vents and puting some blue tac in the door drains solves the problem BUT I still get a generous covering in the car.

I once had a really deep and long stretch of the stuff and although I didn't get bogged in it, it slowed me down to a crawl. So much so that the cloud of BD was overtaking me and I couldn't see the track - great stuff I say, it really makes you feel that you're in the bush.

Kind regards
AnswerID: 169452

Follow Up By: Footloose - Friday, Apr 28, 2006 at 11:22

Friday, Apr 28, 2006 at 11:22
My "little" brother once (never again !) was on a trip with me, and demanded fresh air all the time ie window open. You could actually see the cloud of dust at his window level and he still refused to close the window. Not a great trip.
I can remember being directed through the "80 ways" out Boulia way. As a new chum I looked in vain for this place on my map. It turned out to be a huge hole of bulldust which had at least 80 ways around it.
Glad to see that I'm not the only one that suffers :))
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Follow Up By: Member - Oldplodder (QLD) - Friday, Apr 28, 2006 at 15:17

Friday, Apr 28, 2006 at 15:17
Last time we were out there, I just found what I thought ws the best path, friend decided he was going to skirt around it.
After travelling a few kilometers along the edge, still didn't find a way though, so ended up plunging in like the rest of us.
Boys though it was great watching the bull dust running down the side windows like water.
The report I had at the servo in Boulia was that "it is up to the bottom bar of the cattle truck bull bars", they were about right.

We had dust falling out of the ceiling lining for years after that reminding us of the trip.
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Reply By: Sand Man (SA) - Friday, Apr 28, 2006 at 11:20

Friday, Apr 28, 2006 at 11:20
Pressurising the Cabin area should stop dust ingress.

In extremely dusty conditions try setting the air intake duct to "internal".
This will recycle internal air rather than suck in new "dirty" air.

Works for me.

I do this also when sitting behind someone in their badly tuned " bleep box" when it's pumping out noxious exhaust gases.
Bill


I'm diagonally parked in a parallel Universe!

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AnswerID: 169455

Follow Up By: Footloose - Friday, Apr 28, 2006 at 11:38

Friday, Apr 28, 2006 at 11:38
Yep, I always used internal but I've been told no.
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Follow Up By: robak (QLD) - Friday, Apr 28, 2006 at 11:53

Friday, Apr 28, 2006 at 11:53
Guys, I have a query.
How does using recycled (internal) air increase pressure in the cabin?
I thought to increase pressure you would need to pump in extra air from the outside. Then this air would "escape" though all the gaps in your car preventing dust ingress.

I've got just about nil experience with bull dust so could be wrong.R
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Follow Up By: Footloose - Friday, Apr 28, 2006 at 12:11

Friday, Apr 28, 2006 at 12:11
Aye, and therein lies the dust :) If the vehicle was relatively airtight then using the recycle would tend to keep any dust out. If, however, there's an airflow through the vehicle then its exactly what you don't want, as external air=dust.
Thats my theory but I could be wrong...again :)
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Follow Up By: Member - MrBitchi (QLD) - Friday, Apr 28, 2006 at 12:35

Friday, Apr 28, 2006 at 12:35
But the external air is being sucked in from the front at bottom windscreen level (generally) and should therefore be dust free, long as you're going forwards that is ;-)
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Follow Up By: 944runner - Friday, Apr 28, 2006 at 13:37

Friday, Apr 28, 2006 at 13:37
I see it as if you are recycling the air then there will be no extra cabin pressure as you are just pushing around what is in there already. If you are using external air then you are forcing air into the cab so then the extra air has to get out somewhere. That is the easy part of pressurising the cab. The hard part is to stop the dust coming in with that air in the first place. I have yet not worked out how to do that.
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Follow Up By: Member - Matt M (ACT) - Friday, Apr 28, 2006 at 15:15

Friday, Apr 28, 2006 at 15:15
I subscribe to the external air theory and it works well. Vent on full with external air pressurises the cabin and significantly reduces dust ingress.

Down sides are that you need to remember to flick it to internal when a vehicle comes from the other direction or when following another vehicle too closely. Also with aircon it is not the most efficient way of doing business, but a couple of extra litres of fuel beats a cabin full of dust IMHO.

It works well for me and makes a marked difference.

Matt.
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Reply By: Kiwi Kia - Friday, Apr 28, 2006 at 11:27

Friday, Apr 28, 2006 at 11:27
Take an ordinary sheet of paper and make a strip about 50 mm (or 2") wide.
Open door, hold strip of paper and let it hang down over the door seal and shut the door on it.

Try sliding the paper along around the perimeter of the door. You will prob be able to slide the bit of paper in some places and it will be to tight in others. Where ever you can slide the paper easily you have an air gap for dust to get in.
AnswerID: 169459

Follow Up By: Footloose - Friday, Apr 28, 2006 at 11:44

Friday, Apr 28, 2006 at 11:44
Good pointer. But once I have found the gap, what then ?
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Follow Up By: Kiwi Kia - Friday, Apr 28, 2006 at 11:52

Friday, Apr 28, 2006 at 11:52
Depends on how long the open area is. If it is only a short bit then you can pack out the rubber seal a little. If is a long strip at the top you can sometimes (gently) bend the door, if it is really long strip see a panel beater and ask them to adjust the hinges or warp the door a little.
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Reply By: AdlelaideGeorge - Friday, Apr 28, 2006 at 11:29

Friday, Apr 28, 2006 at 11:29
I've fitted a 'air scoop' in the roof of the fibreglass camping cover on my ute. It presurises the tray section and keeps all dust out. It can be raised and lowered depending on whether you driving on highway or unmade roads.
Wanna cut a hole in the cabin roof and fit an air scoop?????????
AnswerID: 169462

Follow Up By: Footloose - Friday, Apr 28, 2006 at 11:48

Friday, Apr 28, 2006 at 11:48
I always though a moon roof was so that you could moon the car behind :))
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Follow Up By: Gramps (NSW) - Friday, Apr 28, 2006 at 11:52

Friday, Apr 28, 2006 at 11:52
Hahahaha Footy, idle minds .......... LOL
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Follow Up By: Footloose - Friday, Apr 28, 2006 at 12:05

Friday, Apr 28, 2006 at 12:05
To be honest Gramps, that was never my style. A friend ahead of me had his young g/f to it to me and that was the first occurace I'd seen. And boy did I see it..YUK. I thought that only ever happened in Z grade movies !!
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Reply By: Member - Reiner G (QLD) 4124 - Friday, Apr 28, 2006 at 11:32

Friday, Apr 28, 2006 at 11:32
Bull dust on two wheels is even more fun and often by the time you realise the bike is somewhere behind you. The landing hurts and there is allways a rock somewhere.

Reiner
AnswerID: 169463

Follow Up By: Footloose - Friday, Apr 28, 2006 at 11:46

Friday, Apr 28, 2006 at 11:46
2 wheeled travel isn't my thing. I want to travel in shorts, I don't have a thing for leathers and bandanas :))
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Follow Up By: Member - Reiner G (QLD) 4124 - Friday, Apr 28, 2006 at 11:56

Friday, Apr 28, 2006 at 11:56
not all bikeriders wear leathers and bandanas mate ......actually very few do....... depends who you hang out with :-)
( Make sure your shorts are long enough )

Reiner
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Follow Up By: Footloose - Friday, Apr 28, 2006 at 12:02

Friday, Apr 28, 2006 at 12:02
Reiner , you're right. I've seen a few in thongs...and some of em were on their feet ! The last mob of bikers I carried supplies for across the Simpson sure wore em....scared the tourists in Ooodndatta, they thought the guys were the bad guys.
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Follow Up By: Pajman Pete (SA) - Friday, Apr 28, 2006 at 13:50

Friday, Apr 28, 2006 at 13:50
I was driving my old ford escort across whoop whoop western Queensland in 1984 bouncing from bull dust hole to bull dust hole and met some poor bloke on a trail bike. He was doing about 20 kmh with his feet down trying to stay upright. My bike was in the trailer and I offered him a lift was well, but he wanted to tough it out.

I ran into him the next day at Charters Towers and had a yarn. Interesting bloke who was doing the full circle trip on two wheels.

Pete
Any mug can be uncomfortable out bush

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Reply By: Member - Bruce H (WA) - Friday, Apr 28, 2006 at 13:03

Friday, Apr 28, 2006 at 13:03
I believe with fan on recycle you're only recirculating internal air.

If you want to pressurise an area you need to introduce more air, therfore you should be running on external air with a faily fast fan speed. This has lost a lot of its effectiveness with "through flow ventilation" or whatever they call it coz it lets the pressure escape that you're trying to introduce.

Dust generally doesn't get to the heater air intake too much and creates far less of a problem than that sneaking in through the rear of a vehicle. The darn stuff goes everywhere.

Good luck, Bruce H.

AnswerID: 169470

Reply By: Brett_B - Friday, Apr 28, 2006 at 14:21

Friday, Apr 28, 2006 at 14:21
I had a dust problem in my old Hilux (I hate dust in the cabin) they call me the dust Nazi :-)

Anyway it didn't take long to work out.

I place the vents on recirculate and wind the fan up to at least speed 3, air on if it gets a little warm.

I can run at the rear of a group of vehicles on a dusty track, outback or high country with little to no dust in the cabin, any dust that comes in is usually after I have stopped and opened the doors, the dust builds up around the bottom of the door sills, when you close them it usually pushes a small cloud inside.

Dust for me now isn't a problem

AnswerID: 169490

Reply By: The Rambler( W.A.) - Friday, Apr 28, 2006 at 21:12

Friday, Apr 28, 2006 at 21:12
If you're worried about bulldust don't go bush.
AnswerID: 169580

Reply By: BenSpoon - Monday, May 01, 2006 at 21:25

Monday, May 01, 2006 at 21:25
The dust getting into the 80 is likely from 2 spots...
Do you have the rear doors with a top window and lower tailgate? If so, I'd almost put money on the bottom of the tailgate being bent. Have a look on lcoolfor info if you want. In short, unclip the flap of carpet from the inside of the tailgate and look at the tailgate- if its bent at the bottom, stick a cheapo ratchet strap hook in the factory holes and pull the dents out- if your not a big bloke, rachet it up to a tree or ceiling beam.

Culprit #2 - How dusty is your factory jack in its hideaway? Outside the car behind the rearmost side windows the black plastic trim hides a long air vent with just a flap of rubber over it to stop dust coming in.

Recirculate? pfft.
thats about as good as an open window.
AnswerID: 170125

Follow Up By: Footloose - Monday, May 01, 2006 at 21:27

Monday, May 01, 2006 at 21:27
Jack area cops a hiding. Thanks for the location of that vent...I'm going to take a serious look at it first thing tomorrow ...
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