Always run a messenger line so you can pull another wire when the mast is up!
Joel On Wed, Apr 8, 2020 at 11:27 AM Shawn Wright via CnC-List < cnc-list@cnc-list.com> wrote: > I had hoped to pull our mast soon, but with the mast crane out of service > due to covid, it will have to wait. Some great info on this thread, so I > will save it. > > One option for thinner PVC is to use white (water) PVC, which you can get > in a CL200 rating (at least in Canada) for light use; it is a bit thinner > walled, and UV resistance is not an issue inside the mast. You could also > seek out aluminum electrical conduit, which will be even thinner. Regarding > sizing, I just installed two 3/4" conduits (grey electrical type) through > the bilge for wiring, and was able to get the wiring for both Garmin and > Standard horizon depth sounders through one conduit by staggering the > connectors - two 7 pin DIN twist lock, and one RCA for the old SH unit. > Once the connectors are through, there is plenty of space for smaller > cables. > Holding the conduit in place while drilling and riveting might be > challenge also. Too bad the mast doesn't have a wire track like some of the > newer ones. > > > -- > Shawn Wright > shawngwri...@gmail.com > S/V Callisto, 1974 C&C 35 > https://www.facebook.com/SVCallisto > > > On Tue, Apr 7, 2020 at 3:30 PM Nathan Post via CnC-List < > cnc-list@cnc-list.com> wrote: > >> All, >> >> As one of my boat projects this spring I am replacing the electrical >> wiring in my mast. The mast is currently down (horizontal) so now is the >> time to do it. I want to secure the wires in the mast, in particular to >> reduce noise (when rocking at anchor). Wisper is a 1981 C&C 34 with a keel >> stepped mast and 5 internal halyards in addition to the wires. The cables >> are for wind instruments, masthead and steaming lights, VHF coax, and radar >> (power and communication) so it will be a substantial bundle with a >> separate drop at the spreader. The two approaches I am considering are: >> >> 1) Creating a bundle (wiring harness) of the cables and placing 3 large >> cable ties on the bundle at perhaps 2 or 3 foot intervals with the tails >> sticking out at 120 deg angles that will bend over and press against the >> mast and keep the cables in the middle. I would use Panduit metal barb >> outdoor zip ties which are robust, smooth edged, and long lasting. >> >> 2) Installing a PVC conduit (using rivets?) with a feeder line for the >> cables and then running the cables through it. >> >> There is support of both methods in various forums online. Cable ties >> are definitely the simpler method. The main advantages to the conduit that >> I see is being able to run an additional wire through it at a later time >> potentially with the mast up. Also I might be able to run cables from top >> to bottom so that a large connector can remain preinstalled on the top (for >> example for the radar unit) rather than needing to feed everything in to >> the bottom at once and then fishing the ends out the various small holes in >> the mast and reattaching connectors. The disadvantage is the effort >> required to install it and the additional holes I would need to create in >> the mast. I am also unsure how quiet either solution would be and the >> relative chance of tangling or extra friction or wear on a halyard although >> most info on-line seems to indicate that the conduit is the better choice >> for that. >> >> With the conduit approach, I am also debating if two smaller conduits - >> one to the spreader and one to the mast head - would make more sense than >> having a hole in large conduit at the spreader location. >> >> Has anyone done either of these securing approaches? What are your >> thoughts on the success? How much does it silence the cables? Is the >> effort for the conduit worth it? >> >> Thanks, >> Nathan Post >> S/V Wisper >> 1981 C&C 34 CB >> Lynn MA, USA >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Joel
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
