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Quote: Originally Posted by rcign |
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Never saw 3/16 ID Hayes....3/16 OD, yes....3/16 OD Hayes will run ANY gasser WE USE on the planet, no need for large ID fuel line...
No, I'm not an engineer, just been doing this for most of my adult life.... |
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Ralph - I don't believe I mentioned Hayes being 3/16" ID. If I did, that would have been a typo. Medium Hayes line sold thru Great Planes is 3/16" OD. That's the size hole I drilled in the plywood for it to pass thru for my extensive test rig (grin).
Engineer - it's what I do. I make no excuses for my degree but also make no claims to be smarter than anyone else. I take experience over a degree any day. However, unlike yourself, Ralph, I have not reached my "Adult" life yet, but I have been designing stuff for 25 yrs since engineering school. Did a few years as lead engineer for a division of Walbro for fuel injection systems. I'm definitely no expert but I do know a couple of things as a result of my career.
Joe - I've had the Hayes fall off and/or tear off brass tubing and barbs in tanks of a couple of planes. Their neoprene line is not great for cut and tear resistance. Might have been due to additives in the gasoline where I have lived. Various fuel mixes may be one reason why people have different experiences with these products. So, as a result of my experiences, and to avoid further problems, I only use Viton inside tanks and for the fuel dot line, with transparent blue/yellow stuff for vent and supply lines. Pretty bullet proof setup if one can spend the $3.50/ft for the Viton.