Running Wind Instrument Cable - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 05-03-2013
KeelHaulin's Avatar
STARBOARD!!
 
Join Date: Mar 2006
Posts: 1,662
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 10
KeelHaulin will become famous soon enough KeelHaulin will become famous soon enough
Running Wind Instrument Cable

I have a dilemma on this; I'm installing a new Raymarine (ST60+) wind instrument and need to run the cable down the mast. Mast is ~60' tall with an existing wind instrument cable running up but it's from an old Signet system. I'm afraid that if I try and pull the new cable down using the old as a messenger that it will either get hung up (say if there are wire ties bundling it to other wires) or I will lose the connection to the messenger on the way down.

We tested the wires from the old cable for continuity and they all test good. Would it be better to make a splice onto the old cable; or try pulling the new one? If so what sort of multi-pin connector would be best aloft? Would a waterproof junction box be easier/better to install?

There is also a VHF antenna wire exiting at the same location as the transducer cable; so these two could be bundled. Would it be better to pull both down and install a messenger line to pull the new transducer cable/VHF combo?
Reply With Quote Share with Facebook
  #2  
Old 05-03-2013
SlowButSteady's Avatar
Senior Slacker
 
Join Date: Feb 2010
Location: SoCal
Posts: 4,223
Thanks: 0
Thanked 17 Times in 15 Posts
Rep Power: 5
SlowButSteady is on a distinguished road
Re: Running Wind Instrument Cable

Why not just wire it up with the old cable and see how it works? If it doesn't work, then go ahead and pull the new cable. I wouldn't bundle the antenna coax with anything else, as you might get cross-talk.
__________________
Never forget them. Do something to prevent it from happening again.
Charlotte Bacon, Daniel Barden, Rachel Davino, Olivia Josephine Gay, Ana M. Marquez-Greene, Dylan Hockley, Dawn Hochsprung, Madeleine F. Hsu, Catherine V. Hubbard, Chase Kowalski, Jesse Lewis, James Mattioli , Grace McDonnell, Anne Marie Murphy, Emilie Parker, Jack Pinto, Noah Pozner, Caroline Previdi, Jessica Rekos, Avielle Richman, Lauren Rousseau, Mary Sherlach, Victoria Soto, Benjamin Wheeler, Allison N. Wyatt
Reply With Quote Share with Facebook
  #3  
Old 05-03-2013
KeelHaulin's Avatar
STARBOARD!!
 
Join Date: Mar 2006
Posts: 1,662
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 10
KeelHaulin will become famous soon enough KeelHaulin will become famous soon enough
Re: Running Wind Instrument Cable

One issue is that the new cable is about ~100-150' long so I'd be adding it's resistance to that of the old wire (measures 1ohm per strand at 60'). I have not measured the resistance of the new cable yet.

The coax antenna was installed with the old anemometer cable ~30 years ago. I could try running the anemometer cable down the mast from the top by replacing a wire for the tricolor; but then there would be an issue with E/M interference with those wires, right? At least the VHF wire is passive unless I am transmitting, correct?
Reply With Quote Share with Facebook
  #4  
Old 05-03-2013
chucklesR's Avatar
Senior Member
 
Join Date: Sep 2007
Location: Pasadena Md - Magothy side
Posts: 5,978
Thanks: 10
Thanked 30 Times in 30 Posts
Rep Power: 10
chucklesR is a jewel in the rough chucklesR is a jewel in the rough chucklesR is a jewel in the rough
Re: Running Wind Instrument Cable

I just went through the same installation. I did not have a old wire so I tried all the normal methods (piano style chain on a rope messenger etc..). All of my messengers got hung up on internal bits and pieces in the mast (winches, lines, deck plate, compression post entrance etc.). We ended up using the VHF coax (thick RG-8 stuff). Still had to cut the connector off the end and hold our breathe hauling (not pulling, hauling) the line through. Of course then I had to solder the new connection back to the VHF.

I strongly recommend a good tight flexible connection of old to new, then pull through. If you loose the old - it had to come out anyway and you can always fetch the new back out.
__________________
Lessons learned are opportunities earned.
Reply With Quote Share with Facebook
  #5  
Old 05-03-2013
KeelHaulin's Avatar
STARBOARD!!
 
Join Date: Mar 2006
Posts: 1,662
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 10
KeelHaulin will become famous soon enough KeelHaulin will become famous soon enough
Re: Running Wind Instrument Cable

so did you pull a messenger up the mast with the coax to get it run and then pull the coax/anemometer back down with it? If that's the case then maybe I have two chances of getting the new anemometer cable pulled through (one with the coax and one with the old anemometer cable). The coax looks to be as old as the anemometer; probably time to replace it too anyway. What sort of messenger did you use? Is small 1/8" cordage like messenger string for halyards OK or should it be heavier? What do you suggest for attaching to the wire or coax?

Last edited by KeelHaulin; 05-03-2013 at 02:02 PM.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Replacing wind machine - running cable down the mast? MarkSF Gear & Maintenance 2 12-07-2012 05:23 PM
Wind Instrument Decision..?? Maine Sail Gear & Maintenance 35 03-31-2009 12:59 PM
autohelm wind instrument carl4 Catalina 2 06-01-2008 08:44 AM
wind instrument kms Gear & Maintenance 10 04-16-2008 09:21 PM
ST 60 Wind Instrument tommyt Gear & Maintenance 11 05-03-2007 11:44 PM


All times are GMT -4. The time now is 04:39 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.