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  1. F

    Swapping IO-540 SUMP?

    I have an IO-540 with an aft facing induction set up. Is it possible to swap the sump to one with a vertical or more preferably a front mount, horizontal induction? The rear facing set up is really complicating my installation. As always, thanks! David
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    FWF Fuel Lines

    Homebuilders, I will be running 3/8in. aluminum fuel lines across the firewall, from the wing tanks to the fuel selector. Is it wise to firesleeve all fuel lines forward of the firewall including rigid lines? I know that flexible hoses should be covered but have seen plenty of pictures that...
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    Silver Paint & Radio Waves

    I am building a wood airplane with several internal antennas. I have a paint scheme, which I like very much, that has the primary color as silver. It has occurred to me that this paint, which I believe contains metal , may interfer with radio waves getting to & from the antennas. Does anyone...
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    Testing Aircraft Antennas-Standing Wave Ratio

    I have installed several copper foil antennas in my project (nav, comm, glide slope) and would like to test their function with a swr meter (standing wave ratio). If I understand correctly, the swr meter is hooked up in series in between the transmitter/receiver and the antenna. I am wondering...
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    Tuned Exhaust

    I have been working on the design of exhaust pipes for my Barracuda project - IO540. I have a pvc mock up kit from one of the custom exhaust companies and am trying to achieve equal lengths to the 3 into 1 collectors on either side of the engine. This is a tedious and I believe impossible...
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    Metal NACA Inlets

    Does anyone have a source for NACA inlets that are made of metal. I need ducts for use near the engine & am concerned about how the plastic, fiberglass or carbon fiber ones will hold up. Need a 2.5 - 3 inch diameter outlet. Thanks! David
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    IO-540 Induction Air

    I have a 290hp Lyc that I'm putting in my Barracuda project. Came out of a Bellanca 17-31A & it has aft facing induction. This seems counter productive to me because the air has to change directions by 180 deg. to enter the engine. I wonder why this design came to be. That said I am figuring...
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    Widening a carbon fiber nose bowl

    I am in the initial faze of figuring out how to proceed with building the cowling for the Barracuda I'm building. The nose bowl & spinner I have were designed for the Barracuda & I really want to use them as the large spinner really looks great & makes the airplane. My problem is that to clear...
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    Lycoming baffle mount lugs

    Has anyone removed the threaded lugs that point upward out near the rocker covers? I believe their function is for mounting cooling baffles. They are part of the head casting & would have to be cut off to be removed. The forward most lug on the right side (IO-540) is giving me fits as I try to...
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    WING STRUCTURE MODIFICATION

    I am building a Barracuda, an all wood high performance retractable. I want to put additional fuel tanks in the outer panels of the wing. The airplane has a three piece wing with a center section & 2 outer panels. The airplane as designed has tanks in the center section just outside of the...
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    New Member Here!

    I am happy to have just become a member of this group & would like to introduce myself. My name is David Roth & I live in Corrales, N.M. just outside of Albuquerque. I love airplanes & flying, both powered & unpowered. I started my Barracuda project in NYC back in 2000 so I've been at it for...
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