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Old 21 October 2016, 15:37   #1
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Spare fuel can

I've been wondering what the value is in carrying a spare can of fuel on shorter runs as standard kit. If I'm doing a run that will use more than 75% of my range then obviously I'd carry more but more likely in multiples of 20l, not a 5l can.

If I have a fuel problem, I'm not sure how 5l of extra fuel will help. Handy to help someone else who's run out. In any case but 5l won't get them or me that that far.
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Old 21 October 2016, 16:00   #2
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On my rib I had a 12.5 ltr tank I used for the aux engine nice size to tuck away or hang on the A frame not a vast amount but a get out of bother
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Old 21 October 2016, 16:33   #3
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Quote:
Originally Posted by lakelandterrier View Post
I've been wondering what the value is in carrying a spare can of fuel on shorter runs as standard kit. If I'm doing a run that will use more than 75% of my range then obviously I'd carry more but more likely in multiples of 20l, not a 5l can.
but a spare is really for the cock up / miscalculation / misread the gauge situation rather than to get you more range.

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If I have a fuel problem, I'm not sure how 5l of extra fuel will help. Handy to help someone else who's run out. In any case but 5l won't get them or me that that far.
Well probably about 5nm, which a lot of the time will get somewhere ashore, although possibly not where you planned to go.
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Old 21 October 2016, 16:41   #4
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I used to carry a spare tank on the older boat so that I could just swop the connectors and carry on, but the main was only 30 L. With this one I'll either carry a spare 25l or so or not bother.

With 80L on board most runs can be handled with plenty to spare or at least as enough to plan a fuel stop.
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Old 21 October 2016, 16:55   #5
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but a spare is really for the cock up / miscalculation / misread the gauge situation rather than to get you more range..

With a 90l tank, I'd never want to run lower than c.30l based on both fuel gauge and knowledge of my burn per NM, so getting anywhere close to that would scare me

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Well probably about 5nm, which a lot of the time will get somewhere ashore, although possibly not where you planned to go
If i'd miscalclauted that badly,I'm not sure an extra 5NM wolud make much difference.

So it isworth carrying?
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Old 21 October 2016, 17:12   #6
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So it it worth carrying?
Nope.
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Old 21 October 2016, 19:00   #7
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If you were running the 140 Suzuki in your bio then 5lt could push you 20km if you drop the rpm down to its lowest, if you ran out of fuel a short distance from home then 4500 rpm should give you 10 km on 5 lt according to these figures ( look under the performance tab) https://suzukimarine.com.au/outboard...product/df140a my last boat had the latest model 90 Suzuki which averaged 3km per lt.


My underfloor 100 lt fuel tank gives me a safe range around 300km with a Yamaha f70. However when I head to remote islands I take 6 20lt plastic jerry cans which cover me easely for a good weeks fishing. One place I fish is 47 km offshore where my run there and back the engine sits on around 5000 rpm, add a bit of pulling lures for tuna and I'm normally up for 120km for the day with a fuel burn of around 34 lt.

Love the economy of those little 4 strokes.

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Old 21 October 2016, 19:21   #8
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Quote:
Originally Posted by lakelandterrier View Post
I'm not sure an extra 5NM wolud make much difference.

So it isworth carrying?
I ran out of fuel once while doing a "demo" lap on someone else's RIB. Hadda be towed in - 5L would have sorted me. I know a bloke that got back to Carsaig Bay on a 5L spare

IIWY, I'd carry a compact 10L can - more for peace of mind than from necessity.

ATM I tend to carry a 30Nm fuel reserve on deck - I figure that will see me out of trouble in most of the places I could run out...
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Old 22 October 2016, 03:40   #9
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There's plenty of boats ran out of fuel in the last leg into the marina where 5l would have got them back
Even if your several miles away and you run out 5l will probably get you to a place you can safely anchor while you await help which is far better than being in a fairway or shipping channel
I'd say for the little space 5l takes up its better than nothing at all
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Old 22 October 2016, 04:58   #10
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not so much due to running out of fuel run out of fuel, I take a separate can in case of dirty/contaminated fuel.
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