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Chimney? - Forno Bravo Forum: The Wood-Fired Oven Community



New Forno Bravo Forum Feature

Forno Bravo Forum Community,

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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  • Chimney?

    Hello all,

    After reading all of your wonderful posts and seeing the great builds
    I have decided to build my first WFO.

    My question is this: I am forced to have a 90 bend in the chimney
    to accommodate getting out of my patio ( I cannot go straight up).

    Will my chimney work properly with one 90 degree bend in it?



  • #2
    Re: Chimney?

    I do know from wood stoves that a 90-degree bend will not affect things too much, but if you do that, I would do 2 things:

    1. Increase the size of your flue
    2. Increase the vertical portion of your chimney.

    The first is to increase airflow to accomodate for the roadblock, and the second is to increase airspeed to help the hot air get moving faster to "pull" more air through.

    I have never built WFO, but the physics of convection should remain fairly constant.



    • #3
      Re: Chimney?

      Hello Rocket2004

      I am considering a similar setup. Building in a breezeway and having the chimney go out under the roof rather than straight up and through the roof.
      I will probable do 2 45degree bends rather than 1 90 degree. I think that that should flow better.



      • #4
        Re: Chimney?

        Rocket, I believe David is on point. I recall this being discuss way back and the 45 deg approach was the preferred option.
        Check out my pictures here:

        If at first you don't succeed... Skydiving isn't for you.