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longg(at)pjm.com
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 Posted: Wed Apr 08, 2009 5:42 am Post subject: Polyfuses |
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I've all but completed the installation of the dual Lightspeed and I'm
attach a few pics for those still on the road. I used Bob's idea of
backing up the main leads to the 5 amp Potter breaker-switches with 30
amp in line fuses. I won't advocate one approach over another so, this
is how I did it and I'm sticking to it. I bring a lead in from the hot
side of the battery contactor and secure it to a terminal block I picked
up at Stein. This makes the distribution a breeze and leaves me a spare
hot terminal for the next gadget. On the panel view the two green switch
covered items are the breakers. Their lines come directly off the power
feeders and the loads to the plasma boxes.
| Quote: | From my point of view attaching the wire to the hot side of the battery
contactor is just as good as going directly to the battery. If the
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battery lead falls off my lead will also, so what's the point. If the
contactor lead falls off, I'll use my backup battery to feed the
terminal bar. If any of that happens and I'm still around I'm going to
torque the bolts onto the battery and the contactor and then epoxy the
threads so they never come off again. I expect no issues.
I talked to an Plasma III owner last night who had one of the ignition
boxes fail in flight. He did not say if the internal OVP kicked off or
what the problem was but they continued the flight safely. LS replaced
the box, but not before trying a new coil, wires and so on. The main
problem was getting a replacement module at the off-site location and
ferrying back and forth to install the parts. One caveat of these things
is that Pep Boys doesn't carry them. If you are lucky enough to live in
SO Cal, you will have better access to their source.
One note on the in-line fuses. Don't buy them from B & C - they are
poorly made. The terminals inside are not strait and the plastic is rock
hard. I damaged more than one fuse trying to get them in. Threw them
away and went to Napa. TG for Napa.
The ignition system will have a backup battery at some point - I'm still
pondering how best to work it into Z-13/8.
Some pictures here...
http://n661gl.blogspot.com/
Glenn
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