VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 06-16-2014, 07:12 AM
bluebrear bluebrear is offline
 
Join Date: Feb 2013
Location: Bethel
Posts: 32
Question Need Space for Conduits

Hello,

Am working on avionics and need to run RF cables from forward of the main spar to the aft fuselage but don't have any more room in the holes and grommets indicated on the plans of my RV9A. Also, I need to run the air speed pitot tube from behind the main spar, as it enters from the wing, to forward of the panel. Again no more room in the access holes.

Vans indicated that maybe it's possible to mount the antenna for the VHF, NAV and Trig under the fuselage forward of the main spar. They don't have any engineering to support any holes for conduit other than what is designed.

Would appreciate any ideas or experience in these areas.

Thanks,

Gary
Reply With Quote
  #2  
Old 06-16-2014, 09:16 AM
Rupester Rupester is offline
 
Join Date: Dec 2005
Location: Mahomet, Illinois
Posts: 2,195
Default

You say there are no openings indicated in the plans. Can you not actually look at the center section to see what pass thru's are there? There's sizable pass thru's at the outboard ends and at least two more near the center. I had no problem getting all the wiring , the pitot line, and 3 runs of RG400 thru. And I still have room for more wires if I needed.
__________________
Terry Ruprecht
RV-9A Tip-up; IO-320 D2A
S. James cowl/plenum
(Dues paid thru Nov '18)
Reply With Quote
  #3  
Old 06-16-2014, 09:57 AM
MarkW's Avatar
MarkW MarkW is offline
 
Join Date: Sep 2011
Location: Edgewater, FL. KSFB
Posts: 1,118
Default

Gary,
I don't know that they make accommodations for more than the four grommets.
Like Terry I was able to get a boat load through those four. The only other option I know of would be to use the underside of the longeron following the static line. I did not run conduit through the holes as this would limit the hole size. I ran conduit right up to the grommet and then continued on the other side.
__________________
Mark
RV9 - N14MW - Flying
G3X - ECI Titan I0-320
Catto three blade prop
http://www.mykitlog.com/MarkW
Reply With Quote
  #4  
Old 06-18-2014, 07:27 AM
bluebrear bluebrear is offline
 
Join Date: Feb 2013
Location: Bethel
Posts: 32
Default Conduit

Thanks. The grommets are full with static, strobe/nav power supply, magnetometer, servos coming via center (at push rod) and through the main spar. I can mount the transponder antenna below fuselage forward of the main, but it needs to be clear of nav antenna by 6 feet so will need to mount that one at the aft section.

I'll look for a way.

Thanks

Gary
Reply With Quote
  #5  
Old 06-18-2014, 09:51 AM
bruceh's Avatar
bruceh bruceh is offline
 
Join Date: Mar 2008
Location: Ramona, CA
Posts: 2,370
Default

I'm pretty sure that Van's has already been asked and answered this question. I know I have seen someone's build log that had to add a hole to the spar carry through and Van's had some input to the location/size. Give them a call.

On my RV-9A, I had plenty of space. If you add the Pitot/Static and manual trim, those take up lots of room in the standard holes.
__________________
Bruce Hill
RV-9A N5771H flown over 800 hours!
http://www.overthehills.com/RV-9A-Project
APRS Tracking for KJ6YRP and New Flying Blog
2020 VAF donator
EAA Tech Counselor, Build assistance - canopy/tanks/fiberglass/electrical/repairs
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 05:34 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.