The Murphy Builders Site

Hello to all builders; I'm new to the site and appreciate all the helpful hints I've gleaned. I am just about to work on the control systems and prior to "sealing my floor" I have a couple of questions about wires that may need to be routed through the cabin. I would appreciate any builder's comments on ideal battery location for an O-320 weight engine install ( actually an EJ22, approx same installed weight ). Likewise,any comments on ELT locations that have worked well would be helpful.
Thanks, Dave Luther skydoc@nidlink.com (skydoc@nidlink.com)

LUKE&BECKY wrote:

Hello to all builders; I'm new to the site and appreciate all the
helpful hints I've gleaned. I am just about to work on the control
systems and prior to "sealing my floor" I have a couple of questions
about wires that may need to be routed through the cabin. I would
appreciate any builder's comments on ideal battery location for an
O-320 weight engine install ( actually an EJ22, approx same installed
weight ). Likewise,any comments on ELT locations that have worked
well would be helpful.
Thanks, Dave Luther skydoc@nidlink.com

This isn't a battery thing Dave but don't forget the return lines for
the fuel injection system if that is what you are using with the
Legacy. I've got some ideas if you need them. Hope this helps.
--
Dave Bangle http://www.subielyc.com/
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LUKE
I have a 2.2 on the front of my REBEL . Firewall moved back 3", I've got 28LB
of battery and aluminum battery box as far back as posable for my C/G to work
out in the center of C/G range. My wiring for position lights on tail, ELT,
radio antenna and mode C all run through thin wall plastic water pipe that is
Adel clamped to the top of the floor, running along the bottom of the side
radius or corner wrap. Used Nut Serts with appropriate thread for bolts or
screws for Adel clamps. Can remove and service if need be. to make the bend
in the fuselage floor just heat plastic pipe with heat gun or torch. Can rout
the front with standard fittings over and up but don't glue pressure fit and
just put a small drop of glue on shoulder of fitting so it can be filled off
or broke loose if it needs servicing later. At the rear I stoped the pipe
about half way back and went with coragated wire sleeve Adel clamped in place.
Phil&Lisa Smith #460 N414D
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LUKE
I'll add that I didn't like the derlin cable guides for the rudder, felt
their was to much drag or friction. So I made small 1" pulleys out of some
Delrina round stock I found. Turned them on my drill press used a small rat
tail file to cut groves, cut them apart on the band saw. Bent up aluminum
housings to hold them. The guides for the elevator seem to work good so I
left them alone.
Phil&Lisa
Smith #460 N414D
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The ELT's usually go right at the back, behind the end of the floor.
Batteries go back there somewhere, depending on the CG requirements. Some
folks with lightweight starters and alternators have used motorcycle
batteries on the firewall, with good results. Generally, leave battery
placement as late as possible, so you can check CofG needs.

The closer the battery to the front, the better, as you use shorter
cables, which are lighter, and you have less voltage loss because of the
length. There ARE some long narrow snowmobile/garden tractor batteries
(about 2 1/2" - 3" X 10") that can go in the rear fuselage, on the right
side, in between the bulkheads, on the ledge. This leaves the floor area
open for sleeping bags later ;-)

.....bobp

-----------------------------orig.-----------------------------------------
At 08:37 AM 2/6/00 -0800, you wrote:

Hello to all builders; I'm new to the site and appreciate all the helpful

hints I've gleaned. I am just about to work on the control systems and
prior to "sealing my floor" I have a couple of questions about wires that
may need to be routed through the cabin. I would appreciate any builder's
comments on ideal battery location for an O-320 weight engine install (
actually an EJ22, approx same installed weight ). Likewise,any comments on
ELT locations that have worked well would be helpful.

Thanks, Dave Luther skydoc@nidlink.com
<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
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<BODY bgColor=#ffffff>
<DIV><FONT color=#000000 size=2>Hello to all builders; I'm new to the site and
appreciate all the helpful hints I've gleaned.&nbsp; I am just about to

work on

the control systems and prior to "sealing my floor" I have a

couple of

questions about wires that may need to be routed through the cabin.&nbsp; I
would appreciate any builder's comments on ideal battery location for an O-320
weight engine install ( actually an EJ22, approx same installed weight

).&nbsp;

Likewise,any comments on ELT locations that have worked well would be
helpful.</FONT></DIV>
<DIV><FONT color=#000000 size=2>Thanks,&nbsp; Dave Luther <A
href="mailto:skydoc@nidlink.com">skydoc@nidlink.com</A></FONT></DIV></BODY>

</HTML>

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Hi Luke

Have an O 320 E2D mounted on my Rebel 190R with the firewall cut back 3
inches (picture attached). Mounted battery, strobe light power pack and
ELT one bulkhead behind the crank in the fuselage. My weight came out
at 1006 lbs with empty C of G at 12.1 inches. With full fuel and one
passenger it moved to 15 inches which is about dead center of the range.

Flies well and lots of control at low speeds. Up front have a
lightweight starter and genertor.

Hope this helps!

Glenn Cook
Rebel 190R

LUKE&BECKY wrote:

Hello to all builders; I'm new to the site and appreciate all the
helpful hints I've gleaned. I am just about to work on the control
systems and prior to "sealing my floor" I have a couple of questions
about wires that may need to be routed through the cabin. I would
appreciate any builder's comments on ideal battery location for an
O-320 weight engine install ( actually an EJ22, approx same installed
weight ). Likewise,any comments on ELT locations that have worked
well would be helpful.Thanks, Dave Luther skydoc@nidlink.com

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Hi Luke
<p>Have an O 320 E2D mounted on my Rebel 190R with the firewall cut back
3 inches (picture attached).&nbsp; Mounted battery, strobe light power
pack and ELT one bulkhead behind the crank in the fuselage.&nbsp; My weight
came out at 1006 lbs with empty C of G at 12.1 inches.&nbsp; With full
fuel and one passenger it moved to 15 inches which is about dead center
of the range.
<p>Flies well and lots of control at low speeds.&nbsp; Up front have a
lightweight starter and genertor.
<p>Hope this helps!
<p>Glenn Cook
<br>Rebel 190R
<p>LUKE&BECKY wrote:
<blockquote TYPE=CITE>&nbsp;<font color="#000000"><font size=-1>Hello to
all builders; I'm new to the site and appreciate all the helpful hints
I've gleaned.&nbsp; I am just about to work on the control systems and
prior to "sealing my floor" I have a couple of questions about wires that
may need to be routed through the cabin.&nbsp; I would appreciate any builder's
comments on ideal battery location for an O-320 weight engine install (
actually an EJ22, approx same installed weight ).&nbsp; Likewise,any comments
on ELT locations that have worked well would be helpful.</font></font><font color="#000000"><font size=-1>Thanks,&nbsp;
Dave Luther <a href="mailto:skydoc@nidlink.com">skydoc@nidlink.com</a></font></font></blockquote>

</body>
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OK, Murray, you got me to bite again...

I have the 0-320, 3" cut back, 13.2# Odyssey battery
mounted on the firewall and Sensenich prop, and, oh
yes, the conical mount. My C of G right now is 9.7
empty which includes a survival kit (I think 20#)
stuffed in the back of my tail. It seems to fly and
land just fine on floats right now. However, I should
admit that I did have some difficulties in my early
tail dragger hours with this c of g, in getting the
tail down when doing 3 pointers. Eventually I got the
hang of it, but not after I bent my plane. Anyway,
Murray, this may not be a problem for you, as I was a
very inexperienced tail dragger pilot then.

However, if I was doing it again, I would mount that
Odyssey battery as far back as possible into the tail,
on one of the side bulkhead shelves. The only downside,
of course, is the weight of that long battery cable.
Not sure what that is, but if it was 5 pounds or less,
that would do it for me.

JMHO
Walter

-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Murray and Carol Cherkas
Sent: Tuesday, February 18, 2003 6:24 PM
To: murphy-rebel@dcsol.com
Subject: battery location


OK EVERYBODY

Give me a concensus. 0-320 lycosaurus,
firewall cut back 3" (as every good builder
would do), conical mount. Do I
put the battery(Oddysey) on the firewall or
way in the back.

Thanks for the comments.

Murray Cherkas
REBEL 505



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OK EVERYBODY

Give me a concensus. 0-320 lycosaurus,
firewall cut back 3" (as every good builder would do), conical mount. Do I
put the battery(Oddysey) on the firewall or way in the back.

Thanks for the comments.

Murray Cherkas
REBEL 505



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Yup, 150 hp also here.

The experienced guys like Bob P and Wayne will probably
tell you that they can get that tail down with the
mains still 3 feet off the ground. Never tried that
myself, but after about 30 hours, I got good enough to
sense that sudden sink just before touchdown and keep
it off long enough for a good landing. Of course,
everything is easier if you apply some power and/or put
a sack in the back.

Walter

-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Murray and Carol Cherkas
Sent: Tuesday, February 18, 2003 8:16 PM
To: murphy-rebel@dcsol.com
Subject: RE: battery location


Thanks Walter:

I'm pondering. With the weight in the front
allows more baggage in the rear.
But how much lbs. does a guy think he's
going to carry around all the time.I
have been told to put at least a 50 lb. sack
in the back while on a learning
curve.( not sure how long this curve lasts,
I've been told that it goes on
for awhile)

Sounds like we'll have twin planes. Is yours
150 or 160hp.

Thanks again

Murray Cherkas




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