12 Nov 2025, 19:38 [ UTC - 5; DST ]
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Username Protected
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon  Posted: 08 Nov 2019, 21:49 |
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Joined: 07/31/14
Posts: 3
Aircraft: pacer
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is this the AI with pitch sync? Does it include all needed connectors?
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Username Protected
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 08 Nov 2019, 22:39 |
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Joined: 02/02/13
Posts: 366
Post Likes: +60
Location: Austin, TX - 3R9
Aircraft: 1973 V35B
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Username Protected wrote: is this the AI with pitch sync? Does it include all needed connectors? This unit is before the pitch sync option but it has something like that with the “Airplane position” “UP” / “DOWN” adjustment control if required during flight. In flight, caging is not required and it should operate accurately at all times. But you can adjust the symbolic airplane position up and down with the AP button, if required. I am including the Pilot operation guide with the sale of the instrument My Avionics shop did not give me the connector but I can check with them to try and locate it.
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1973 V35B
D-9546
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 09 Nov 2019, 20:55 |
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Joined: 04/09/13
Posts: 228
Post Likes: +74
Location: Flemington NJ
Aircraft: Pa32 Saratoga IIHP
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Can this instrument be used as a back up when taking out all vacuum systems?
Thanks
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 09 Nov 2019, 21:03 |
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Joined: 02/03/19
Posts: 887
Post Likes: +346
Aircraft: Baron E55, L29, PA28
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It doesn’t have a battery backup, so no. I was going to buy it if it did :(. I have a lifesaver 4300 I’m going to use with an aspen and was thinking of this but no battery Username Protected wrote: Can this instrument be used as a back up when taking out all vacuum systems?
Thanks
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 09 Nov 2019, 23:46 |
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Joined: 02/02/13
Posts: 366
Post Likes: +60
Location: Austin, TX - 3R9
Aircraft: 1973 V35B
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Username Protected wrote: Can this instrument be used as a back up when taking out all vacuum systems?
Thanks Yes, that is it’s purpose, backup to vacuum failure
_________________
1973 V35B
D-9546
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 09 Nov 2019, 23:54 |
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Joined: 02/02/13
Posts: 366
Post Likes: +60
Location: Austin, TX - 3R9
Aircraft: 1973 V35B
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Username Protected wrote: Can this instrument be used as a back up when taking out all vacuum systems?
Thanks
Correct, it is not designed to backup a vacuum-less setup. It’s designed to backup a vacuum system. And this particular unit does not have backup battery power in case that you lose the electrical system.
Kelly Manufacturing has an emergency standby power backup battery unit. This will ensure that your instrument will have power in the event of aircraft electrical power failure. Contact Kelly RC distributor for additional information.
For a vacuum failure, the backup battery unit is not required. So, in summary, this unit provides backup power in the event of vacuum failure. In the event of electrical and vacuum failure, you will need the Kelly backup battery unit
_________________
1973 V35B
D-9546
Last edited on 10 Nov 2019, 19:01, edited 1 time in total.
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 10 Nov 2019, 10:29 |
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Joined: 02/03/19
Posts: 887
Post Likes: +346
Aircraft: Baron E55, L29, PA28
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He is asking if this unit is a pathway to removal of a vacuum system. As it is it doesn’t do it. He would have to buy additional parts beyond this indicator because it does not have or have the ability to easily add a battery backup to the unit. It’s no different than buying a standard gyro electric attitude indicator and then adding the battery backup elsewhere in the aircraft which requires additional wiring. They make AI’s with battery backups built in with charge monitoring that simply replace a turn coordinator. This doesn’t have that. So no as this unit stands no it can not replace a vacuum system because it does not have a battery backup and doesn’t meet the qualifications of vacuum pump removal Very misleading you say it can when it doesn’t include the battery backup
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 10 Nov 2019, 19:02 |
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Joined: 02/02/13
Posts: 366
Post Likes: +60
Location: Austin, TX - 3R9
Aircraft: 1973 V35B
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Username Protected wrote: He is asking if this unit is a pathway to removal of a vacuum system. As it is it doesn’t do it. He would have to buy additional parts beyond this indicator because it does not have or have the ability to easily add a battery backup to the unit. It’s no different than buying a standard gyro electric attitude indicator and then adding the battery backup elsewhere in the aircraft which requires additional wiring. They make AI’s with battery backups built in with charge monitoring that simply replace a turn coordinator. This doesn’t have that. So no as this unit stands no it can not replace a vacuum system because it does not have a battery backup and doesn’t meet the qualifications of vacuum pump removal Very misleading you say it can when it doesn’t include the battery backup Thank you, I mis-read the question of the situation being a system without a vacuum and the Kelly as a backup. You are correct.
_________________
1973 V35B
D-9546
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 10 Nov 2019, 20:03 |
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Joined: 12/13/07
Posts: 20590
Post Likes: +10729
Location: Seeley Lake, MT (23S)
Aircraft: 1964 Bonanza S35
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This is a confusing thread. I installed an RCA-2600 but I put in the smaller 2 3/4 inch one. It has a backup battery and I removed the vacuum system. It is also about an inch and a half deep. So is the larger 3 1/2 inch model. https://sarasotaavionics.com/avionics/rca2600Attachment: RCA2600.jpg So how is this one about a foot long? What's in there?
Please login or Register for a free account via the link in the red bar above to download files.
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Want to go here?:
https://tinyurl.com/FlyMT1
tinyurl.com/35som8p
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 10 Nov 2019, 22:35 |
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Joined: 02/03/19
Posts: 887
Post Likes: +346
Aircraft: Baron E55, L29, PA28
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Its the original version before they slimmed it down. Theyre good units to replace a turncoordinator. The skid ball part is 150+$ by itself and is legal to replace a TC with the skid ball. The battery backup is >> https://sarasotaavionics.com/avionics/esp1
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Post subject: Re: FS: RC Allen Instruments Electric digital horizon Posted: 28 Dec 2019, 19:16 |
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Joined: 02/03/19
Posts: 887
Post Likes: +346
Aircraft: Baron E55, L29, PA28
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I'll take it Put it in the right side of the baron ;D ill pm you
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