Consideration
Unless you are trying to maintain the antique style, I'd step up to a shadin or equivalent.
I was the first person to put a shadin in my helicopter in the 1980's. A helicopter fuel gauge is only accurate sitting on the ground with the engine off ...for at least 3 minutes.
The 337 turbo fuel flow meter is actually a pressure gauge that must be connected to the fuel manifold, as I recall, and to the turbo outlet pressure.
Double check that, it was 25 years ago.
I wasn't thrilled with a fuel line over my passenger's knees.
I recall from 25+ years ago the rear cessna fuel flow gauge would jump to 20 gph on idle because the vacuum side to the gauge would drive it nuts.
A Shadin, or equivalent, will give you a lot more utility. More accurate, of course, but also gives you lots of other info if connected to any sort of GPS system.
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David Wartofsky
Potomac Airfield
10300 Glen Way
Fort Washington, MD 20744
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