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fritzsch(at)eskimo.com
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 Posted: Tue Mar 10, 2009 9:40 pm Post subject: 24 Volt Electrical System |
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Are there any RV-10s that are running on a 24 volt electrical system?
Dave
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Dave Fritzsche
40813
Puyallup, WA
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davidsoutpost(at)comcast.
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| Posted: Wed Mar 11, 2009 5:02 am Post subject: 24 Volt Electrical System |
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I will be running dual Oddessy batteries for both 12 and 24 volts in my 10. Same thing I did on the Cozy MKIV. I want 24V cranking the engine and then have the flexibility to mix 12/24 volt as needed. With the batteries wired together, I tapped the buss bar that connects them for my 12V supply. Some state that one of the batteries will drain first and the other will become a donner battery, killing the battery in short order. Has not happened yet in the Cozy. There is a battery equalizer that will solve the problem but it costs about $275 that will prevent this. . One guy just flip-flops his batteries at every oil change and states he never has had any problems. I made a very slight modification to the Van's battery tray in the kit and dual Oddessy's fit perfectly. I also added a second master solenoid. One for 12 volts and the other for 24. My engine is currently set up for 12 volts (its out of a Maule) so I will need to swap out the starter and alternator.
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robin1(at)mrmoisture.com
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| Posted: Wed Mar 11, 2009 7:39 am Post subject: 24 Volt Electrical System |
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Interesting idea (dual 12/24) I wish I had considered it during my build. The G900X can be set up for 12V but the dual 18W COMM’s require 24V so without knowing of another option I had to buy two Very Heavy and Very Expensive up converters. I hated adding that extra weight & bulk to my plane. I do however like the power & clarity of the Garmin 18W comms.
Robin
Â
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of davidsoutpost(at)comcast.net
Sent: Wednesday, March 11, 2009 6:02 AM
To: rv10-list(at)matronics.com
Subject: Re: RV10-List: 24 Volt Electrical System
I will be running dual Oddessy batteries for both 12 and 24 volts in my 10. Same thing I did on the Cozy MKIV. I want 24V cranking the engine and then have the flexibility to mix 12/24 volt as needed. With the batteries wired together, I tapped the buss bar that connects them for my 12V supply. Some state that one of the batteries will drain first and the other will become a donner battery, killing the battery in short order. Has not happened yet in the Cozy. There is a battery equalizer that will solve the problem but it costs about $275 that will prevent this. . One guy just flip-flops his batteries at every oil change and states he never has had any problems. I made a very slight modification to the Van's battery tray in the kit and dual Oddessy's fit perfectly. I also added a second master solenoid. One for 12 volts and the other for 24. My engine is currently set up for 12 volts (its out of a Maule) so I will need to swap out the starter and alternator.
| Quote: | | _-============================================================_-=Â Â Â Â Â Â Â Â Â - The RV10-List Email Forum -_-= Use the Matronics List Features Navigator to browse_-= the many List utilities such as List Un/Subscription,_-= Archive Search & Download, 7-Day Browse, Chat, FAQ,_-= Photoshare, and much much more:_-=_-=Â Â --> http://www.matronics.com/Navigator?RV10-List |
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johngoodman
Joined: 18 Sep 2006
Posts: 530
Location: GA
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| Posted: Wed Mar 11, 2009 1:04 pm Post subject: Re: 24 Volt Electrical System |
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David,
I assume you are using two PC680s?
| davidsoutpost(at)comcast. wrote: | I will be running dual Oddessy batteries for both 12 and 24 volts in my 10.� Same thing I did on the Cozy MKIV. I want 24V cranking the engine and then have the flexibility to mix 12/24 volt as needed. With the batteries wired together, I tapped the buss bar that connects them for my 12V supply. Some state that one of the batteries will drain first and the other will become a donner battery, killing the battery in short order. Has not happened yet in the Cozy. There is a battery equalizer that will solve the problem but it costs about $275 that will prevent this. . One guy just flip-flops his batteries at every oil change and states he never has had any problems. I made a very slight modification to the Van's battery tray in the kit and dual Oddessy's fit perfectly. I also added a second master solenoid. One for 12 volts and the other for 24. My engine is currently set up for 12 volts (its out of a Maule) so I will need to swap out the starter and alternator.
--- |
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mkmuch(at)gmail.com
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| Posted: Wed Mar 11, 2009 1:14 pm Post subject: 24 Volt Electrical System |
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Doesn't the 24V avionics cost more but do the same as 12V?
I do not know?
On 3/11/09, Robin Marks <robin1(at)mrmoisture.com> wrote:
| Quote: | Interesting idea (dual 12/24) I wish I had considered it during my build.
The G900X can be set up for 12V but the dual 18W COMM’s require 24V so
without knowing of another option I had to buy two Very Heavy and Very
Expensive up converters. I hated adding that extra weight & bulk to my
plane. I do however like the power & clarity of the Garmin 18W comms.
Robin
From: owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of
davidsoutpost(at)comcast.net
Sent: Wednesday, March 11, 2009 6:02 AM
To: rv10-list(at)matronics.com
Subject: Re: 24 Volt Electrical System
I will be running dual Oddessy batteries for both 12 and 24 volts in my 10.
Same thing I did on the Cozy MKIV. I want 24V cranking the engine and then
have the flexibility to mix 12/24 volt as needed. With the batteries wired
together, I tapped the buss bar that connects them for my 12V supply. Some
state that one of the batteries will drain first and the other will become a
donner battery, killing the battery in short order. Has not happened yet in
the Cozy. There is a battery equalizer that will solve the problem but it
costs about $275 that will prevent this. . One guy just flip-flops his
batteries at every oil change and states he never has had any problems. I
made a very slight modification to the Van's battery tray in the kit and
dual Oddessy's fit perfectly. I also added a second master solenoid. One
for 12 volts and the other for 24. My engine is currently set up for 12
volts (its out of a Maule) so I will need to swap out the starter and
alternator.
|
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davidsoutpost(at)comcast.
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| Posted: Wed Mar 11, 2009 2:28 pm Post subject: 24 Volt Electrical System |
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Yes,,,dual 680's.
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davidsoutpost(at)comcast.
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| Posted: Wed Mar 11, 2009 2:40 pm Post subject: 24 Volt Electrical System |
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I am not sure either but if there is a difference, I think that it would be small,,,,certainly not enough to change my plans. This will give me a lot of flexibility in my electrical system. Worked great in the Cozy and no messing with voltage converters.
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