Today's Message Index:
----------------------
1. 11:44 AM - Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel (Matt Dralle)
2. 12:46 PM - Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel (Bill Gunn)
3. 12:56 PM - Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel (Matt Dralle)
4. 01:22 PM - Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel (Bill Gunn)
5. 03:32 PM - Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel (JFLEISC@aol.com)
6. 06:07 PM - Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel (JAMES HITTERMAN)
Message 1
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| Subject: | Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel |
Hello RV Listers!
Well, after quite a hiatus, I'm back on my RV-4 project. This year marks the 20th
year since its beginning, and I'm thinking that that its time finally see
it to completion!
The options have changed quite a bit since I started the project, and the latest
iteration has a 180HP and a Hartzell CS prop. I had already mounted the battery
in the normal spot up by the firewall between the pilot's legs. With all
the extra weight up front, I'm sure I'll have to relocate the battery behind
the cabin somewhere. Of note, however, is that I have electric trim installed
in the Elevator, and the full-swivel tailwheel fork, both of which add some weight
to the far aft location.
I would appreciate some feedback on selecting an exacting location for the battery
given my situation. Also, what gauge battery cables to use given the remote
location.
Its great to be back on the project; I'm looking forward to getting back into the
discussions on the List!
Thanks for the help!
Matt Dralle
RV-4 #1762 - N442RV (res)
Matronics List Administrator
Message 2
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| Subject: | Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel |
Matt - I replace an 0-320 & F/P wooden prop with an 0-360 & Hartzell C/S. On advise
of Van's, I left the battery where it was & find the CG is fine - mine is
67.16 aft of datum @ 1030 Lbs. empty. Originally it was 70.03 @ 916 Lbs. with
the 0-320 & F/P prop. N252MD, 2160 hours.
Bill Gunn, TxDOT Aviation Division
>>> Matt Dralle <dralle@matronics.com> 4/28/2008 1:41 PM >>>
Hello RV Listers!
Well, after quite a hiatus, I'm back on my RV-4 project. This year marks the 20th
year since its beginning, and I'm thinking that that its time finally see
it to completion!
The options have changed quite a bit since I started the project, and the latest
iteration has a 180HP and a Hartzell CS prop. I had already mounted the battery
in the normal spot up by the firewall between the pilot's legs. With all
the extra weight up front, I'm sure I'll have to relocate the battery behind
the cabin somewhere. Of note, however, is that I have electric trim installed
in the Elevator, and the full-swivel tailwheel fork, both of which add some weight
to the far aft location.
I would appreciate some feedback on selecting an exacting location for the battery
given my situation. Also, what gauge battery cables to use given the remote
location.
Its great to be back on the project; I'm looking forward to getting back into the
discussions on the List!
Thanks for the help!
Matt Dralle
RV-4 #1762 - N442RV (res)
Matronics List Administrator
Message 3
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| Subject: | Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel |
Well, that's good new, Bill. I was kind of bummed 'cause I had all the holes drilled
and dimpled already for the front location.
So what can you say about the performance of the 320/FP vs. 360/CS on the exact
same RV-4? That's definitely an "all things being equal" example. I'm very
curious to hear if all the extra who-ha is worth it (oh, and the extra $20k...)
Matt
At 12:42 PM 4/28/2008 Monday, you wrote:
>
>Matt - I replace an 0-320 & F/P wooden prop with an 0-360 & Hartzell C/S. On advise
of Van's, I left the battery where it was & find the CG is fine - mine is
67.16 aft of datum @ 1030 Lbs. empty. Originally it was 70.03 @ 916 Lbs. with
the 0-320 & F/P prop. N252MD, 2160 hours.
>
>Bill Gunn, TxDOT Aviation Division
>
>
>The options have changed quite a bit since I started the project, and the latest
iteration has a 180HP and a Hartzell CS prop. I had already mounted the battery
in the normal spot up by the firewall between the pilot's legs. With all
the extra weight up front, I'm sure I'll have to relocate the battery behind
the cabin somewhere. Of note, however, is that I have electric trim installed
in the Elevator, and the full-swivel tailwheel fork, both of which add some
weight to the far aft location.
>
>I would appreciate some feedback on selecting an exacting location for the battery
given my situation. Also, what gauge battery cables to use given the remote
location.
>
>Its great to be back on the project; I'm looking forward to getting back into
the discussions on the List!
>
>Thanks for the help!
>
>Matt Dralle
>RV-4 #1762 - N442RV (res)
>Matronics List Administrator
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft
Message 4
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| Subject: | Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel |
It is to me - and that is the most definitive statement I can make. I fly
the #2 slot with Falcon Flight & needed the power and control. I find the
fuel burn slightly lower at 65% or less at 9000 to 13000 density altitude
- about 7.5 to 8.4 GPH - electronic (Electoair) ignition really helps
here; I have had it on for 1500 hours. Attached is my home made (but
reasonably accurate) performance chart. The "Pwr@ 2300 RPM" is the MP + 23
= the value shown. Climb is enhanced & the C/S prop really is an
excellent speed brake when you need it.
Bill Gunn, TxDOT Aviation Division
>>> Matt Dralle <dralle@matronics.com> 4/28/2008 2:53 PM >>>
Well, that's good new, Bill. I was kind of bummed 'cause I had all the
holes drilled and dimpled already for the front location.
So what can you say about the performance of the 320/FP vs. 360/CS on the
exact same RV-4? That's definitely an "all things being equal" example.
I'm very curious to hear if all the extra who-ha is worth it (oh, and the
extra $20k...)
Matt
At 12:42 PM 4/28/2008 Monday, you wrote:
>
>Matt - I replace an 0-320 & F/P wooden prop with an 0-360 & Hartzell C/S.
On advise of Van's, I left the battery where it was & find the CG is fine
- mine is 67.16 aft of datum @ 1030 Lbs. empty. Originally it was 70.03 @
916 Lbs. with the 0-320 & F/P prop. N252MD, 2160 hours.
>
>Bill Gunn, TxDOT Aviation Division
>
>
>The options have changed quite a bit since I started the project, and the
latest iteration has a 180HP and a Hartzell CS prop. I had already
mounted the battery in the normal spot up by the firewall between the
pilot's legs. With all the extra weight up front, I'm sure I'll have to
relocate the battery behind the cabin somewhere. Of note, however, is
that I have electric trim installed in the Elevator, and the full-swivel
tailwheel fork, both of which add some weight to the far aft location.
>
>I would appreciate some feedback on selecting an exacting location for
the battery given my situation. Also, what gauge battery cables to use
given the remote location.
>
>Its great to be back on the project; I'm looking forward to getting back
into the discussions on the List!
>
>Thanks for the help!
>
>Matt Dralle
>RV-4 #1762 - N442RV (res)
>Matronics List Administrator
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft
Message 5
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| Subject: | Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel |
My -4 has a stock 0-360 with a fixed (max cruise pitch) and a large auto
battery up front. It flies fine solo with full tanks but is still real easy to
load to max aft CG unless careful. There was a time when I thought a 200hp
would be nice but over the years of cleaning things up, tuning, and adjusting
rigging etc it pushes the envelope already. Sometimes indicate 220mph S&L on
low density altitude days. Still climbs at 3000fpm+ solo and sometimes see 4000
on half tanks. BTW, I bought the plane used about 12 years ago with the
0-360 and wood prop. It was a pig back then and was lucky to see 185mph.
Jim
**************Need a new ride? Check out the largest site for U.S. used car
listings at AOL Autos.
(http://autos.aol.com/used?NCID=aolcmp00300000002851)
Message 6
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| Subject: | Re: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel |
What type of prop are you using, and do you know the pitch? I have a 4 with
a 180 as well and am do a prop swap.
Jim H
----- Original Message ----
From: "JFLEISC@aol.com" <JFLEISC@aol.com>
Sent: Monday, April 28, 2008 5:26:14 PM
Subject: Re: RV4-List: Battery Location - RV4+180HP+CS+ETrim+FullSwivelTailwheel
My -4 has a stock 0-360 with a fixed (max cruise pitch) and a large
auto battery up front. It flies fine solo with full tanks but is still real easy
to load to max aft CG unless careful. There was a time when I thought a 200hp
would be nice but over the years of cleaning things up, tuning, and
adjusting rigging etc it pushes the envelope already. Sometimes indicate 220mph
S&L on low density altitude days. Still climbs at 3000fpm+ solo and
sometimes see 4000 on half tanks. BTW, I bought the plane used about 12 years
ago with the 0-360 and wood prop. It was a pig back then and was lucky to see
185mph.
Jim
Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos.
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