Reply
 
Thread Tools Search this Thread
 
Old 18 January 2009, 11:59   #1
Member
 
Country: UK - England
Make: Ribcraft
Length: no boat
Join Date: Jul 2007
Posts: 27
Can anyone help ?

I had to cut my gps cable and radar cable will i have to replace them or can they be re-joined

Looking forward to your replies

Ryan
__________________

__________________
xtreme is offline   Reply With Quote
Old 18 January 2009, 12:36   #2
Member
 
Country: Sweden
Town: Stockholm
Boat name: Osprey & Ring
Make: Osprey & Ring
Length: 9m +
Engine: Plenty
Join Date: Mar 2003
Posts: 860
Quote:
Originally Posted by xtreme View Post
I had to cut my gps cable and radar cable will i have to replace them or can they be re-joined

Looking forward to your replies

Ryan
They can be re-joined, we are usually using a product from 3M they are in difference sizes so you can buy them after the size of the cable, you put the 2 ends into the product (dont know the word in english) and press a button, the 2 ends gets connected by metal and glue is coming out to protect water och humidity coming in.
This is how it looks like.
Attached Images
 
__________________

__________________
www.grandrib.se
Petrov is offline   Reply With Quote
Old 18 January 2009, 15:20   #3
Member
 
Country: UK - England
Town: andover
Make: Renegade 720
Length: 7m +
Engine: 200 verado
Join Date: Dec 2008
Posts: 41
You can certainly rejoin the gps cables not sure about the radar as havent done one of those for the gps i normally slide a bit of heat shrink over the entire cable then solder and heat shrink each individual cable then heat shrink over all of the conections
__________________
markb is offline   Reply With Quote
Old 19 January 2009, 04:19   #4
Member
 
Country: UK - England
Town: fawley
Boat name: venturer 1/2 br3
Make: oceon dynamics
Length: 9m +
Engine: 400 iveco/ 80 yamaha
Join Date: Dec 2007
Posts: 35
yh

yh you can re-join gps cables because i done it to my dads boat
__________________
danwells is offline   Reply With Quote
Old 19 January 2009, 10:10   #5
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
you can rejoin radar also, if you open up the dome there is a choc box connector, if you can do it there you can do it anywhere, make sure it's waterproof of coarse
__________________
biffer is offline   Reply With Quote
Old 19 January 2009, 10:46   #6
Member
 
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
I use the same connectors as Petrov - very handy for permanent joins. A cable guy left hundreds at my house once - very thoughtfull of him !
__________________
PeterM is offline   Reply With Quote
Old 19 January 2009, 11:33   #7
Member
 
Country: UK - England
Town: andover
Make: Renegade 720
Length: 7m +
Engine: 200 verado
Join Date: Dec 2008
Posts: 41
Are these connectors like the blue scotchlok connectors from 3m but waterproof??
__________________
markb is offline   Reply With Quote
Old 19 January 2009, 13:18   #8
Member
 
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
Similar idea to those , but they hold two 'ends' 100% inside the connector . Then the metal 'blade' is pushed through them & as you do this a glue type gel is forced around the wires & where they enter the connector. Mr radio & bilge pumps are connected with them no problem ( so far ) .
__________________
PeterM is offline   Reply With Quote
Old 20 January 2009, 16:19   #9
Member
 
Country: UK - England
Town: Portsmouth, UK
Boat name: Jelly Fish
Make: Quicksilver 3.8XSHD
Length: 3m +
Engine: Mariner 25MEFI
MMSI: 235905473
Join Date: May 2008
Posts: 130
Use in-line heatshrink crimps, they come in the usual red/blue/yellow types. The heatshrink is glue lined, so you get a good waterproof seal. Pay special attention to the shield wires as these usually formpart of the circuit ans must be connected. Once you have got it allcrimped together, then use a double layer of self amalgamating tape with a good overlap.

Alternatively, if you need to break the wire apart at a later date, then use a good IP67 or better rated box and glands, then inside use normal choc block terminal strip to connect the wires up.
Attached Images
 
__________________
Geoff
geoffs is offline   Reply With Quote
Old 20 January 2009, 21:19   #10
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Quote:
Originally Posted by xtreme View Post
I had to cut my gps cable and radar cable will i have to replace them or can they be re-joined

Looking forward to your replies

Ryan
You can join your cables.

The GPS cable may or may not be screened. If the gps cable is just linking an antenna to the gps head unit then the cable will be a single screened cable; probably 50ohm impedance. If the cable is linking a gps engine to the head unit the cable will have multiple cores and may also be screened. You may also find a bare drain wire in there against the shield.

The radar cable will be multi-cored and most likely will have an external screen and separate screened cores. Along with these will be power and ground cores. These may be doubled up because the scanner unit will draw biggish current in pulses and the double power and ground cables will limit the voltage drop during the high current draw.

Joining the plain cable is straightforward. On each one, strip back a couple of millimetres of insulation. Tin the ends, slide a piece of adhesive lined shrink sleeving over one cable end, solder the tinned ends, place and shrink the sleeving. Repeat as necessary.

Joining the screened cable is a little trickier. I fold back the screen on both ends for about 15mm. Slip some shrink over the cable outer. Shorten the inners to about 8mm and tin just about 1mm on each centre conductor leaving a wee blob of solder on one of them. Next, solder the tips together and quickly push them together while they are still hot. The hot ends will push up inside the core until the cores butt and become virtually continuous. The wee blob of solder retains the heat for long enough for you to do this, (if you're quick ). Having a helper makes it easier.
Ensure it's well done, bring back the screen from one end and smooth it. Bring back the screen from the other end to form an overlap. Give it a wee touch of solder just to ensure a sound connection of the screens, then slide the shrink over the top and shrink it. A modification of this technique will be needed to complete the final screening over the bunch of jointed cables. Some or all of the shielding could be aluminium foil so, if that's the case, you'll need to re-wrap it the best you can. Shrink sleeving or even pvc tape can be used to hold it in place.

To limit the overall size of the jointed cable due to the extra material used in the jointing process, stagger the cutting of the cable ends so the joints don't coincide with each other.

The whole lot needs protecting and you'll need to plan how you wish to do this before you start jointing. If there is plenty of space then a waterproof junction box can be used. Glands will seal the cable to the box. If it's more of an in-line joint you need then there are cable connection pieces which are essentially a section of tube with a gland nut at either end. They are fitted to the cable prior to the jointing and then the tube slides over the joint. The glands are screwed into the tube ends against O-ring seals and finally the gland nuts are tightened to seal to the cable outer. They can be permanently submerged in water so I'd guess would be fine for your purpose. They come in various diameters to suit the cable.

I'm presuming you have soldering skills, of course. If not, then a respectable joint can be made using terminals within a junction box but you'll loose the shielding and the impedance of the screened cables will be compromised. Crimp or screw terminals are never as electrically sound as soldering is.

Good luck.
__________________

__________________
JW.
jwalker is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:28.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.