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Old 18 November 2003, 06:50   #11
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Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
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Why are you so reluctant to do it properly. Your engine has an output for charging/lighting. Just get a wee rectifier and then connect to an ordinary battery and it'll all be fine.
If you don't know how to do this, just ask here.
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Old 19 November 2003, 05:35   #12
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Country: UK - England
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Make: Ribtec
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Engine: Honda 130
Join Date: Mar 2002
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If youstill want to go Portable then the Hummingbird RF30 may be of interest to you. It's works on RF to transmit back to thedisplay unit
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Old 19 November 2003, 06:13   #13
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Think JW's solution is the better option for running all the things you will need on a rib.

Radio
VHF
GPS
Nav lights
Eng Instruments
Cigar lighter
Phone charger
Fridge (absolutely)
spot light
12v kettle
Bilge pump
12v soldering iron (to fix the above at sea)

and if you have a battery then electic start is a posibility.

Pete
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Old 19 November 2003, 10:00   #14
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Country: UK - England
Town: south shields
Boat name: jessiesue
Make: avon searider
Length: 4m
Engine: 40hp mariner pull start l/s
Join Date: Nov 2003
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well thanks again for all the advice, so now here is a couple more q,s.
)1(if i go down the line of installing a battry to run a gps+vhf, how do i do it, there is ample room in the front of my console for a small batt(what type/make).
2 how do you go about connecting the various bits to the supply.
3 to recharge it from my exsisting engine( mariner 40hp p/s l/s 1984 ser no 6e9-s-005336) what will i need.
and also in relation to my engine as you can see it is quite old but runs like a dream,but takes some starting from cold so i would love to convert it to electric start- is this possible,if so how.

in anticipation regards
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Old 19 November 2003, 10:06   #15
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mmmmm....

I'm always the first to jump in there with advice, however, on this one I'll hold my hands up and say - dunno - It's about now that I usually reach for the cheque book, however, Ifeel sure you'll get some good advice in due course. In the meantime. A leisure battery is what you need along with a battery case and mounting bracket, total cost between £40 - £80 depending on where you buy.
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Old 19 November 2003, 12:49   #16
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An 85 amp battery would do you fine but you would need to fit it in a box to keep it a bit waterproof. You can buy one of these Boxes from towsure for about a 6 poond note and a Battery for a single 35 poond note( you'll even get 5p change)
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Old 19 November 2003, 14:54   #17
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OKay, just spoken to the man that knows everything.

Apparently, and it's news to me, but all the older Mariners under 50hp were, infact, Yam's.

This is good for you because Yams (even that age) had two (i think they are green) unused wires coming out from under the flywheel. With a diode pack this will produce a 1 or 2A charging circuit - you could make it if you are on a real budget, but they are only about £45, let me know if you want me to get it for you.

Hope that helps!
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Old 19 November 2003, 14:57   #18
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A further note... converting to electric start, i would have thought, will be quite expensive unless you happen to syunble accross the parts from a 2nd hand identical engine. Someone on here may well not agree though!
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Old 19 November 2003, 15:44   #19
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You need to buy a bridge rectifier from some place like Maplin or you may have a local electronics shop. In my catalogue, a 25amp one costs £1.55. Bolt it to a bit of sheet aluminium and bolt that to your engine wherever it is convenient. Connect it up as per the diagram and connect the DC output to your battery.

As Daniel says, the output isn't high but it will keep you in radio and depth power without problem.



If your flywheel has a starter ring (some did, some didn't) you will need a starter motor and a starter solenoid plus a start button.

Get the electrics going first.
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Old 19 November 2003, 15:57   #20
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As usual JW you have come up with pragmatic and cost effective advice. Out of interest what subject do you teach?
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