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  #21  
Old 01-23-2021, 12:21 AM
avrojockey's Avatar
avrojockey avrojockey is offline
 
Join Date: Aug 2019
Location: Appleton, WI
Posts: 352
Default

Quote:
Originally Posted by Andrew Anunson View Post
Not arguing against your lineup at all... just curious as to why you want to have a transponder in an emergency instead of your COM. I am currently installing my IBBS and need to make some decisions and appreciate your help. I don't want to revert to my handheld COM during an emergency. The GTX shouldn't be required if we're down to the IBBS.... does the GTX make a big difference if we need ATC help to get back on the ground?
It came down to loads...the load during transmission was going to put me into a 6aH unit even without the GTX, and the transponder I can always shut off once I get the handheld spun up to talk. I also have an archer wingtip antenna and headset jacks solely for my handheld so it’s pretty much a panel mounted com...just need to switch my headset and turn on
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Tim Holmes
Appleton, WI
RV-9A N904DC
2019-2021 Dues Paid

Last edited by avrojockey : 01-26-2021 at 09:18 PM.
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  #22  
Old 01-23-2021, 10:19 AM
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mfleming mfleming is online now
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 674
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I will Have the IBBS 6ah battery.

On back-up battery
  1. PFD
  2. MFD #1
  3. GEA 24
  4. GSU 25 #1
  5. GMU 11

Not on back-up battery
  • GNX 375 -not needed, PFD has GPS.
  • Comm - not needed, have handheld.
  • A/P - I'm getting on the ground as soon as able.
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016 (sans fiberglass)
Ailerons and flaps completed 3/2017.
Wings completed 12/2017
Started on QB fuselage 01/2018
Sliding canopy mostly completed 10/2020
Wiring completed
Avionics harness build in progress
Donated for 2021 and so should you
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  #23  
Old 01-23-2021, 10:35 AM
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rv8ch rv8ch is online now
 
Join Date: Feb 2005
Location: LSGY
Posts: 3,745
Default Not much!

I've got my GRT EFIS Sport EX and the GRT EIS 4000 on my IBBS 3ah. I bought it just to ensure that I have engine monitoring at startup. If something happens where I don't have electrons, I'll just land. My RV-8 is VFR only, obviously.
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Mickey Coggins
http://rv8.ch
"Hello, world!"
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  #24  
Old 04-02-2021, 07:58 AM
ebackscheider ebackscheider is offline
 
Join Date: Aug 2018
Location: Lafollette, TN
Posts: 43
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Quick question on backup batteries. Are you doing a dual diode connection to separate main power with backup power? I'm curious how to wire things that only have 1 power line to two sources. I'm Skyview so both HDX's have their own battery, but I'd like my 175, transponder and possibly radio to have backup options. Looking into TCW as an option for me.
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Eric Backscheider

2020 Dues Paid!

RV6 - N6014Y - Flying
Pitts S2B - 245JH - Sold
CFI - Acro in the 6 Rocks!
StopFlyingScared.com
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  #25  
Old 04-02-2021, 09:33 AM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,170
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Dual diode part number: 863-MBRF20L45CTG $1 each. Buy one for each load. 10 amps max if kept cool.
Use heat conductive paste between diode and metal surface. Connect center pin to load.
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Joe Gores
RV-12 Flying
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  #26  
Old 04-02-2021, 09:55 AM
RV10Pilot RV10Pilot is offline
 
Join Date: Jan 2005
Location: Medford, NJ USA
Posts: 380
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The TCW IBBC backup battery has the ability to provide pass through power in addition to battery backup. So you only need one power input to the device you are connecting. There are wiring diagrams in the IBBC installation instructions that's available on TCW's website.
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  #27  
Old 04-02-2021, 03:12 PM
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cderk cderk is offline
 
Join Date: Sep 2015
Location: Park Ridge, NJ
Posts: 725
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I have two of these - one of each size. I use one for my avionics - just my dual G3X system and engine monitor (no autopilot), and the other to back up my Lightspeed ignition. They work great
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  #28  
Old 04-03-2021, 07:50 AM
ebackscheider ebackscheider is offline
 
Join Date: Aug 2018
Location: Lafollette, TN
Posts: 43
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Thanks all, didn't realize that the TCW was pass-thru, which is exactly what I'm looking for!
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Eric Backscheider

2020 Dues Paid!

RV6 - N6014Y - Flying
Pitts S2B - 245JH - Sold
CFI - Acro in the 6 Rocks!
StopFlyingScared.com
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  #29  
Old 04-03-2021, 08:08 AM
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Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,017
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Quote:
Originally Posted by ebackscheider View Post
Thanks all, didn't realize that the TCW was pass-thru, which is exactly what I'm looking for!
Be sure to read the associated manual for the device you plan to use, pass thru current is also limited.
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1900+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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