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LEWT Construction

Leading Edge Wing Tank Modification

The following pictures are a photographic record of the construction of the Leading Edge Fuel Tank modification that I have produced. As I progress I will add more photographs. Any comments should be send to - Bob Stephens - Click Here

One of the main reasons that I decided to design a leading edge tank was because I was concerned about the weight and balance of the aircraft when using the parcel shelf for baggage (see my article Weight Where? (The Fuel Versus Baggage Dilemma) (Zodiac News Edition 6, Jan 97)). If one wishes to do any touring in the aircraft, being able to carry two people, baggage and a reasonable amount of fuel, then as I see it the only sensible option is to restrict the amount of baggage put on the parcel shelf, and put the heavier items in the wing locker. After 250 hrs flying this is also what Alan Cozens has also concluded (see his articles Zodiac 601 HD - The 250 Hour Report on G-BVAC (Zodiac News Edition 11, Apr 98) and My Zodiac 601HD as a touring aircraft (Zodiac News Edition 6, Jan 97)

The modification has been approved by the Popular Flying Association subject to my inspector's approval when complete and successful flight testing - therefore it will be a few years before I have my set up ready for general distribution.

Disassembled inboard assembly

Right - Inboard rib assembly ready for rivetting back to back

Complete inboard rib assembly

Right - Inboard rib assembly showing nut plates

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Right - Inboard rib assembly cleco'd in position on wing spar

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Right - Station 650 - Disassembled rib assembly ready to be rivetted back to back. (Note zinc chromate jointing compound applied to back of one rib and both ribs sprayed with primer)

Left - Inboard ribs and inspection panel disassembled prior to rivetting ribs back to back.

Inboard assembly ready for rivetting

Left - Completed inboard rib assembly cleco'd together

Inboard rib assembly showing nut plates

Left - Inboard rib assembly complete - inspection panel secured in place with screws

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Left - Station 650 - Disassembled, modified rib assembly prior to centre of extra rib being removed

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