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dmasys(at)cox.net Guest
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Posted: Mon Jun 05, 2006 3:58 pm Post subject: Mounting fuse blocks |
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If you happen to be using the Aeroelectric approach of using fuse blocks instead of (or along with) breakers, one way of mounting the fuse holders so they are out of the way but accessible when needed is to put them on a hinged panel between the panel and subpanel. Just got mine cut and installed. These pics show the essential buss block (20 fuse positions), main block (10 position) and battery block (6 position), separated by the diode mounted to a heat sink from B&C specialties:
Seen from above:
http://132.239.155.44/rv10/2006-06-05_fuseblockmount.jpg
and below, where a Dzus cowl fastener keeps the plate in place
http://132.239.155.44/rv10/2006-06-05_fuseblockmount_b.jpg
One half twist of the cowl fastener the the plate drops down vertically for access to the fuses.
-Dan Masys
#40448
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ron.mcgann(at)baesystems. Guest
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dmasys(at)cox.net Guest
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KiloPapa
Joined: 24 May 2006 Posts: 142 Location: Pearblossom, CA
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Posted: Mon Jun 05, 2006 9:44 pm Post subject: Re: Mounting fuse blocks |
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Looks nice. Where did you get the fuse blocks?
Thanks,
Kevin
40494
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jesse(at)itecusa.org Guest
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Posted: Tue Jun 06, 2006 2:55 am Post subject: Mounting fuse blocks |
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Very nice.
Jesse
Quote: |
If you happen to be using the Aeroelectric approach of using fuse blocks
instead of (or along with) breakers, one way of mounting the fuse holders
so they are out of the way but accessible when needed is to put them on a
hinged panel between the panel and subpanel. Just got mine cut and
installed. These pics show the essential buss block (20 fuse positions),
main block (10 position) and battery block (6 position), separated by the
diode mounted to a heat sink from B&C specialties:
do not archive
Seen from above:
http://132.239.155.44/rv10/2006-06-05_fuseblockmount.jpg
and below, where a Dzus cowl fastener keeps the plate in place
http://132.239.155.44/rv10/2006-06-05_fuseblockmount_b.jpg
One half twist of the cowl fastener the the plate drops down vertically
for access to the fuses.
-Dan Masys
#40448
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Jesse Saint
I-TEC, Inc.
jesse(at)itecusa.org
www.itecusa.org
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rvreynolds(at)macs.net Guest
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Posted: Tue Jun 06, 2006 4:03 am Post subject: Mounting fuse blocks |
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Have you checked access with the brakes installed?
Richard Reynolds
Norfolk, VA
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jesse(at)itecusa.org Guest
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Posted: Tue Jun 06, 2006 5:12 am Post subject: Mounting fuse blocks |
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That looks like it is from the bulkhead to the panel support, so it should
be aft of the brakes. The only problem in-flight would be getting your legs
out of the way so you could flip it down, but in most cases where you are
blowing a fuse, putting another one in is probably not going to fix the
problem. The blown fuse is just evidence that there is a problem that needs
to be fixed.
Do not archive.
Jesse Saint
I-TEC, Inc.
jesse(at)itecusa.org
www.itecusa.org
W: 352-465-4545
C: 352-427-0285
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Ray.R.Doerr(at)sprint.com Guest
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Posted: Tue Jun 06, 2006 5:18 am Post subject: Mounting fuse blocks |
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I did the same thing but installed mine on the pilot side because I had my heater controls on the right side and they go through the lower switch panel and then under the sub-panel. You may have to think about where you are planning to install all you push/pull cables for stuff like Alternate Air, Parking Brake and Front and Rear Heat.
Thank You
Ray Doerr
40250
N519RV (28 hours on it now)
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Rick S.
Joined: 12 Feb 2006 Posts: 347 Location: Las Vegas
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Posted: Tue Jun 06, 2006 5:51 am Post subject: Mounting fuse blocks |
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I'm using the one with the heatsink, I have not powered it up but are you saying the voltage drop has been resolved by using the heatsink or is is specific to the unprotected diode?
Rick S.
40185
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_________________ Rick S.
RV-10
40185 |
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brinker(at)cox-internet.c Guest
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Posted: Tue Jun 06, 2006 5:54 am Post subject: Mounting fuse blocks |
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I was considering something similar but after reading some on the
Aeroelectric list and from my experience with automobile fuses is just as
you have said. Most of the time no need to replace a blown fuse until the
problem itself is fixed. Although would be nice to have access to them
during flight. Oh decisions decisions.
Randy
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dmasys(at)cox.net Guest
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Posted: Tue Jun 06, 2006 8:40 am Post subject: Mounting fuse blocks |
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Yes, it is fine with respect to the brakes. Lots more room in the -10 than in the two place forward fuselage. Originally got the idea from Andy Karmy whose installation in his -9A is shown here:
http://www.karmy.com/rv9a/pictures/fuselage/electrical/img_0022.htm
-Dan Masys
---- Richard Reynolds <rvreynolds(at)macs.net> wrote:
Quote: |
Have you checked access with the brakes installed?
Richard Reynolds
Norfolk, VA
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dmasys(at)cox.net Guest
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dmasys(at)cox.net Guest
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Posted: Tue Jun 06, 2006 8:54 am Post subject: Mounting fuse blocks |
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In my -7A the heat-sinked diode has a constant voltage drop (about 0.8 volts) between main buss and e-buss. The old diode, mounted to the plate with the fuseblocks but not separately heat-sinked, would start with a 0.8 volt drop, but as load was added to the e-bus (in particular the TruTrak autopilot, whose load varies with the amount of turbulence due to stepping motor activity and can be up to 7.5a) the voltage drop would go as high as 2.5 volts as it heated up, causing low voltage alarms from the Grand Rapids EIS, which was powered from the e-Bus. Would also occasionally cause the transponder to hiccup. Not a good scene.
-Dan
---- Rick <ricksked(at)earthlink.net> wrote:
Quote: | I'm using the one with the heatsink, I have not powered it up but are you saying the voltage drop has been resolved by using the heatsink or is is specific to the unprotected diode?
Rick S.
40185
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pitts_pilot(at)bellsouth. Guest
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Posted: Tue Jun 06, 2006 9:02 am Post subject: Mounting fuse blocks |
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Jesse Saint wrote:
Quote: |
That looks like it is from the bulkhead to the panel support, so it should
be aft of the brakes. The only problem in-flight would be getting your legs
out of the way so you could flip it down, but in most cases where you are
blowing a fuse, putting another one in is probably not going to fix the
problem. The blown fuse is just evidence that there is a problem that needs
to be fixed.
And while you're preoccupied with the fuses, you aren't flying the
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plane, checking for traffec etc.!!! Best to wait 'till you're back on
solid ground. IMHO, of course
Linn
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