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ContinuousWave: Small Boat Electrical
Raymarine A60 Install location
|Author||Topic: Raymarine A60 Install location|
posted 04-10-2008 11:59 AM ET (US)
I just bought the A60 (see: http://continuouswave.com/whaler/reference/A60.html and I'm about to install it on my Revenge 22 W-T. While I was looking at the better place to install the display (on the cockpit, between the plexiglass sunscreen and the compass), I realized that there will be some problems:
1. Where to put the dsm25 sonar module. I think that the better location is on the back of the locker (or storage, I don't know the precise word) that is under the steering weel.
2. How will I manage to let three cables with big plugs pass through the cockpit? This seems to be the bigger problem as if I drill a big hole in the cockpit, I must also be able to avoid water and humidity to pass through it. I also have to consider that, when the boat is moored, I have to remove the display in order to avoid venetian thieves stealing it. In this case I need to put the cables in a dry place.
3. GPS sensor location. I made some test placing the RS12 in different places and I discovered that a good location is just under the windshield on the port side. This place is not so close to the magnetic compass and is well protected from water and people stepping on it. Surprisingly the Horizontal Dilution of Position value was 0.9, despite some obstacles represented by the windshield frame.
Any idea or advice?
posted 04-12-2008 09:48 AM ET (US)
Installing cables which have large connectors on the ends can be a problem. Here is the best way to handle it:
--Drill one hole for the cables. Make the diameter of the hole just large enough for the largest of the connectors to pass through.
--Pass the largest connector through the hole.
--Pass the next largest connector through the hole, moving the cable from the previously installed cable out of the way as much as possible.
--Pass the next largest connector through the hole, moving the two cables from the two previously installed cables out of the way.
--Repeat as necessary. The order in which the cables are installed will influence the diameter of the hole needed.
Using this technique you should be able to make the minimum diameter hole.
Also, check that the cables with connectors have the same-size connector at both ends. In some situations a cable with a large connector at the end which connects to the sending unit or control head may at the other end of the cable have only bare wires or a smaller connector. In that case you can install the cable by passing the smaller connector through the hole.
You could also inspect the connector to see if it is removable. In most cases these days the connectors tend to be molded on the cable. But if the connector were removable, you could remove it, install the cable though a much smaller hole, and then re-install the connector. I recommend this only if you are very skilled with wiring and soldering.
To cover a hole in a dash panel which has been made to admit cables, I recommend using a clam shell vent.
posted 04-14-2008 02:23 AM ET (US)
Jim thanks, I always look for your advices as I have the impression to be in touch with an expert and serious person. Said that, don't you think that I could use a deck plate instead a clam shell vent?, as I wrote, I need to pull the cables inside every time the boat is moored, and pass them through a clam shell vent could be less easy than passing them trhoug a deck plate and closing it after that?
Regarding GPS sensor location. I flush mounted it on the port side of the cockpit, near the windshield bottom and using an existing 1" ,circa, hole. While testing the device I could notice that HDOP value was between 0.9 and 1.3 (owner's manual says that it must stay under 1.0), so I'm reconsidering the place to install it. Raymarine says that the lower it is mounted the better it works and also it needs no ostructions in order to have a clear line-of-sight reception of satellite signals. Maybe I could mount it using the pole mount base and a 3" pole in order to lift the sensor ower the windshield base. I'm not happy to put an electronic device on the deck of my small boat, as it will be exposed to water splashings and it risks to be stepped on by distract crew.
Thanks again, as soon I will finish this task I'll put on line the pictures
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