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Old 12-14-2010, 10:37 AM   #1
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Flo Scan

Anyone out there using either Flo Scans or Navman3200 to monitor your fuel usage ? Just wonder if they are worth the investment. Having a boat, new to me, not sure what the sweet spot will be or exatly how to track usage. Not planning on topping off after each cruise to determie what my usage rate was for a given distance or speed. I do have site guages on the side of the tank, but with two 700 gallon tanks, it looks like estimates using thme will be a SWAG.
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Old 12-14-2010, 10:42 AM   #2
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RE: Flo Scan

I'm interested too.* My boat is supposed to come with a FlowScan.* It isn't a regular option and the builder mildly discouraged me from*getting it, but I insisted.
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Old 12-14-2010, 10:46 AM   #3
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RE: Flo Scan

SWAG = Scientific Wild Ass Guess
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Old 12-14-2010, 10:51 AM   #4
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RE: Flo Scan

I have a flow scan . Remarkable instrument. Works great.

Finding the sweet spot is going to be hull speed + or*- things like how clean your hull is and how you are loaded.

to my way of thinking you can't have to much information.

A flow scan will tell how much fuel your actually using depending on all other factors the sea conditions i.e. current ,waves, tide and wind.
*
I find those factors to be different every time I go out. With the flow scan I am able to adjust things for optimum efficiency.

Bottom line I love it.*

SD
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Old 12-14-2010, 10:54 AM   #5
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RE: Flo Scan

Did it come with the boat or something you added ? Ever hear of Navman 3200 ?
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Old 12-14-2010, 10:57 AM   #6
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Flo Scan

Quote:
markpierce wrote:".... and the builder mildly discouraged me from*getting it, but I insisted."
Smart man! FloScan isn't just for monitoing your fuel flow....it can be used for
trouble shooting, determining your boat's sweet spot, identifying injector problems,
instantly recognizing a fuel leak, etc. Go to FloScan.Com and get the whole story.
It's one of the best gages on my boat and I have had several over the years.

Floscan Instrument Co. Inc.

*


-- Edited by SeaHorse II on Tuesday 14th of December 2010 03:33:50 PM
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Old 12-14-2010, 11:10 AM   #7
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RE: Flo Scan

The issue I have with the Navman, may not be an issue with you, is that the return fuel line must deliver a minimum of 6 1/2 gallons per hour and that is way too much for my engine. Floscan is expensive but a much batter unit IMO> Chuck
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Old 12-14-2010, 11:32 AM   #8
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RE: Flo Scan

Quote:
Dswizzler wrote:

Did it come with the boat or something you added ? Ever hear of Navman 3200 ?
I added it and I had to jump thru all kind of hoops.
*I had to install a new tac sender. That was trouble enough on it's own as the sender was behind the water pump pulley's I couldn't get to the darn thing and I had to buy a special off set wrench to tighten the darn thing up $90.00 from snapon.*
I don't think I will ever have another use for a 15/16 off set wrench.
*
It was that or drill a hole in the transmission cover to install a tac that took readings off the fly wheel.*I elected not to do that because I was afraid of drill shavings going into the tranny.
**Run all the wires. Then calibrate it to the usage.

Once done it works like a champ. If you plan on installing one . Talk to them first. Very helpful. Find out if you tac sender will work with there unit.

SD



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Old 12-14-2010, 12:11 PM   #9
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RE: Flo Scan

I heard the calibration was a PIA???
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Old 12-14-2010, 12:32 PM   #10
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RE: Flo Scan

Quote:
Baker wrote:

I heard the calibration was a PIA???
Kind of but not really. You just need some way of refilling the tank to the same volume I had to use a stick in the tank. I measured the ammount in the tank with a wooden stick went for about an 8 hour boat ride and then refilled the tank to the exact mark on the stick.**That told me precicely how much fuel was burned the rest was no problem.

SD

*
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Old 12-14-2010, 12:40 PM   #11
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Flo Scan

Quote:
Baker wrote:

I heard the calibration was a PIA???
It* is.* We carry 700 gallons of fuel with a single FL SP135 engine.* FloScan wants you to do at least 2 fill-ups to determine actual fuel used vs the gauge.* You then change the*dip switches to come up with the percentage you need to adjust for.* The more fuel you use, the more times you fill-up,*the more accurate the calibration.* We burn less than 2 gallons per hour under normal cruise conditions.* To get accurate fuel data we tried to burn at least 50 gallons each time.* Filling the tanks so they are full and not have a spill is always a challenge.* FloScan does seem to do a good job on matching the forward and return flow sensors to the specific engine.


Larry/Lena
Hobo KK42
Manzanillo, Colima, MX

-- Edited by Larry M on Tuesday 14th of December 2010 01:46:00 PM
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Old 12-14-2010, 03:50 PM   #12
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Flo Scan

Do not use the Navman I repeat do not use the Navman.
I installed a Navman flow meter set up a few years ago.
They are not very accurate and can not be adjusted.
They released it far too early and then did not improve it when it turned out to be a flop.
I was sorely dissapointed in the whole affiar.
Go with the Flowscan.

Benn

-- Edited by Tidahapah on Tuesday 14th of December 2010 04:51:23 PM
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Old 12-14-2010, 04:12 PM   #13
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RE: Flo Scan

Ive installed floscans on a couple of outboard fishing boats and a Camano trawler (single 200 HP diesel) my previous boat. Simple to install after calibrating a couple of fill ups they worked great. I'll probably install one on my Monk 36 this year.
Steve W.
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Old 12-14-2010, 08:09 PM   #14
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RE: Flo Scan

I put one on my previous boat and it was one of the first things I added to my current boat. Obviously it needs calibrated, but, you can get it close right out of the box and fine tune it anytime. If you only buy fuel twice a year as I do it may take you a year to have it fine tuned to the nth degree, but it will still give you relative readings until that time.

If you burn more fuel per the guage at 1750 rpm vs 1650 rpm, without the corrosponding increase in speed it's pretty easy to see.

Don't leave home without it.....

Ken
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Old 12-14-2010, 09:52 PM   #15
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RE: Flo Scan

And the purpose of floscans in a slow trawler is-------?
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Old 12-15-2010, 04:38 AM   #16
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RE: Flo Scan

The calibration IS a fun game.

Just the factory setting will get you close say 5% off , but if you want ACCURATE a bit of tweeking is required.

No sweat its just a switch setting , but with effort and a LOOOONG trip you can get within 2 % all the time! The guys at the fuel post are amazed when you ask for 165G of fuel and take 167!!!

It was a game for us on the Loop , small (-200G) tankage had us filling often , so we could compare the fuel ticket with the reading , move the switch till it matched better , and then Reset.
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Old 12-15-2010, 05:22 AM   #17
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RE: Flo Scan

We had originally specified Floscans for our new build*but after looking at the information you get*from the*current electronic engines we decided against the Floscans*and saved*the money for other gear.
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Old 12-15-2010, 08:45 AM   #18
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RE: Flo Scan

If we have to the fill the tanks twice to be able to calibrate it will take us 10+ years.* Besides is just as easy to guessemate looking at the sight tubes.* Usually I am surprised how little fuel was used. * My problem is using/turning the fuel, so I some time wish the 671 would burn more.* I sure am glad we have a Webasto diesel heater to burn/use up some of the fuel.* Wee use maybe 150 to 200 gallon cruising and 400 to 500 heating.* Having a stand up walk around engine room make checking things easy.* Besides if you know your boat you should be able to guessemate how much you used.


*
Navigator I sure like the looks of you boat.**Length and beem*and who is mfg?* You cn not post a picture like that having*us droole all over it with put some information?*
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Old 12-15-2010, 09:27 AM   #19
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RE: Flo Scan

Quote:
Phil Fill wrote:If we have to the fill the tanks twice to be able to calibrate it will take us 10+ years.is mfg?
I hope that the Forum doesn't think that you have to burn through 2 full tanks of
fuel before calibrating the FloScan because you don't! Obviously, the bigger the "lot
sample" the better the calibration. This can be done in a very short time period or
over several years for the fanatic that wants to calibrate down to the last drop.
Since the "dip switches" are located on the back of the gage, a snug but not tight*
fit when one mounts the gage in the panel allows for easy removal and
calibration. Really, it's very easy and to imply that it is not, is doing a great
dis-service to a very fine product. The best example of a recommendation I can
recall was Dick Ratan's experience with FloScans on his non-stop round the world
flight in Voyager. Floscan Instrument Co. Inc.
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Old 12-15-2010, 10:10 AM   #20
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Flo Scan

Quote:
Navigator wrote:

We had originally specified Floscans for our new build*but after looking at the information you get*from the*current electronic engines we decided against the Floscans*and saved*the money for other gear.
Dude,
*Now that is one sweet looking boat. who, what ,where, and when.



SD

*


-- Edited by skipperdude on Wednesday 15th of December 2010 11:12:12 AM
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