Air Vent - Positive Pressure raad





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  1. #1
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    Default Air Vent - Positive Pressure raad

    Hallo almal.

    Ek wil air vent in my canopy sit vir positive pressure. Wat ek gekry het is dat daar 2 moontlike oplossing is:
    1. Air vent hatch wat mens self oopmaak
    2. Side louvre wat aand die kant deure kom.

    Nou my vraag is,watter van die 2 is die beste opsie.
    1. air vent hatch, waar sal mens hom sit. Gaan n roofrack die sy oopmaak beinvloed nie.
    2. Gaan mens nie baie reen water inkry wat soos ek verstaan is hy permanent oop.

    Wil graag hoor wat julle raad en sienings is.

    Groete
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  2. #2
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    Default Re: Air Vent - Positive Pressure raad

    Put louver on canopy with louvers facing down. If your canopy door and tail gate is well sealed, then the air flowing past your canopy will still get through the louvers and pressurize the canopy and you won't get dust in your canopy. If your canopy door and tail gate are not sealed, the you will have lots of dust going into your canopy regardless of vent installed.
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  3. #3
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    Default Re: Air Vent - Positive Pressure raad

    Hunter, do you think placing the louvre between the cab and canopy, facing down will work?

  4. #4
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    Default Re: Air Vent - Positive Pressure raad

    I would suggest the Louvre between the cab and canopy. Bought a aluminium frame with canvas cover from Neels Morris 11 years ago and that is what he does. Never had a problem with dust.
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  6. #5
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    Default Re: Air Vent - Positive Pressure raad

    Sit die air vent hatch op baie goed en as dit reen stop en maak hom net toe.
    Ek so air vent op my kamper se dak en werk baie goed as jy hom nodig het.

  7. #6
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    Default Re: Air Vent - Positive Pressure raad

    I have a canvas canopy for my DC. I say for and not on as it has been lying in the shed for years due to dust ingress driving me nuts.

    Where can I buy those louvers and any suggestions on how to affix them to the canvas?

    Also, if mounted between cab and canopy, I assume the louver's "openings" will have to face downwards to prevent rain ingress?

    Thanks in advance.
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  9. #7
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    Default Re: Air Vent - Positive Pressure raad

    Die vents moet voorentoe wys om die die beste en meeste wind in te laat en as dit reen maak dit dan net toe.
    Ek het self nou n canvas canoppy gekoop en gaan vir my vents op die kante laat is sit.

  10. #8
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    Default Re: Air Vent - Positive Pressure raad

    It's pointless trying to pressurize a canopy if your tailgate etc is not sealed. Imho by adding a vent, you will allow dirt/dust to flow freely through the canopy. What you want is to create a high pressure zone, dust will not be able to flow through easily ie air becomes a sort of bubble.
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  11. #9
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    Default Re: Air Vent - Positive Pressure raad

    Quote Originally Posted by hunter26 View Post
    It's pointless trying to pressurize a canopy if your tailgate etc is not sealed. Imho by adding a vent, you will allow dirt/dust to flow freely through the canopy. What you want is to create a high pressure zone, dust will not be able to flow through easily ie air becomes a sort of bubble.
    Hunter, I'm talking about a Defender here - trying to seal the tailgate etc. is like trying to empty a dam with a sieve...
    "ASK YOURSELF HOW OLD YOU'D BE IF YOU DIDN'T KNOW THE DATE YOU WERE BORN" - Toby Keith

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  12. #10
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    Default Re: Air Vent - Positive Pressure raad

    Quote Originally Posted by EttiennedK View Post
    Hunter, I'm talking about a Defender here - trying to seal the tailgate etc. is like trying to empty a dam with a sieve...
    Use lots of canopy foam rubber sealer
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  13. #11
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    Default Re: Air Vent - Positive Pressure raad

    Jammer vir die Engels, maar ek tik te stadig in ander tale .........

    Don't bother with the louvre type vents - they sit too close to the body of the canopy to scoop up enough air.
    I had something similar and it did not work.
    Switched to the "hatch" type, no more dust.

    I do agree with Hunter, try to seal off the tailgate as much as possible - it does not have to be airtight, just close off the bigger gaps.
    Look under the "rim" of the bak on the inside - Isuzu have big holes there don't know about other manufacturers.
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  15. #12
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    Default Re: Air Vent - Positive Pressure raad

    Quote Originally Posted by hunter26 View Post
    It's pointless trying to pressurize a canopy if your tailgate etc is not sealed. Imho by adding a vent, you will allow dirt/dust to flow freely through the canopy. What you want is to create a high pressure zone, dust will not be able to flow through easily ie air becomes a sort of bubble.
    Air vents at the front definitely help, even if you can't seal the tailgate, as per Ettienne's post. No dust enters the front vents, unless you drive in dusty convoy conditions. I did this on my Defender PUP, and hardly had any dust inside the canopy despite a porous tailgate. The station wagons had much more dust inside, even with good seals. Opening the airvent flaps (older defenders) in the cab helped a lot, but could get chilly with cold outside temps.


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