Sent: Friday, October 17, 2003 10:11
AM
Subject: [FlyRotary] Re: LS1 Coil Fuse
Value?
I'm using LS-1 coils and have my pair of leading coils
running off one fuse and the trailing coils running off another. What
value of fuses are working for the rest of you? I blew 5A's on both
pairs today.
Perry Casson
I have mine all tied
together, and there is no fuse. I'm not necessarily recommending that,
btw.
Remember, fuses don't
protect the device, they protect the wire. The maximum fuse size will be
determined by the wire size you're using to feed the coils. It's natural
to try to size fuses so that they're just large enough for the current that
you expect, but you should resist this urge to avoid nuisance trips,
particularly when powering something as important as ignition coils.
Cheers,
Rusty (EWP's on the
way- let the shipping entertainment begin)
I know I'm considered back in
the stone age by some, but I still will not use a fuse on any flight critical
circuit. I am well aware of the argument that if something is wrong then
a circuit breaker just becomes an expensive fuse. But, in my 2000 hours
of flying in the military, I had a number of instances where a circuit beaker
would pop - apparently due to some temporary surge, short or whatever -
but, I was able to reset it and continue to use the
equipment. Not every time by any means, but a sufficient number of times
that I prefer the circuit breaker.
I do use fuses on what I
consider none-flight critical systems so not against fuses per se, just feel
they don't provide that "second chance" just in case it was a termporary
short or surge - like you caught your foot in some wiring and caused a
temporary short (I know shouldn't happen), but then fuses shouldn't blow
on flight critical stuff either.
My 0.02 worth
Ed Anderson