frank.hinde(at)hp.com
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 Posted: Mon Jan 26, 2009 11:13 am Post subject: Bob Nuckolls's Z-14 with dual Lightspeed iii and SD-8 |
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He he..I had to chuckle reading this..i have a completely electrically dependant (electric Fuel pumps, EI's, electronic instruments) RV7a that I fly in IMC with some regularity.
With the little SD8 alt waiting to go a flick of a switch should I ever need it..And yes it was tested with a fuel pump, transponder and a 430W running and by gosh that little SD8 keeps the batt volts up just over 12v as long as I don't use the PTT.
(The AI has its own internal battery)
So the other day I'm playing safety pilot to a guy in a 172 and we go into hard IMC..I have never felt more nervous in my life as I remember the 1930's Ford alternator and that dreadful Vacuum pump thingy upfront..For once I was actually glad of the mechanical fuel pump even though my IO360 doesn't have one.
Keep it simple and try to remember what your supposed to do when the alternator lets its smoke out....Easier said than done with today's high reliability electrics.
Frank
If you don't understand what you're doing and why you're
doing it, then "adding more goodies for the purpose of
adding safety" is at best a tax on cost of ownership;
at worst a sad disappointment. The simplest, lightest,
easiest to understand flight system with well considered
Plan-A/Plan-B and maintenance will never be root cause
of a bad termination of flight.
Very few TC aircraft are blessed with such attention
to detail for reasons that are clear. As both designer,
builder, owner and operator of your OBAM aircraft, you're
offered an opportunity that exceedingly few of our
Spam-Can flying brothers will enjoy.
But if it were easy, everybody would be doing it.
Bob . . .
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