Fuel flow meter

The two stroke Yamaha 70 is carburated, so would have no problems with the fuel sensor.

Navman is no more. It became part of Northstar, which was bought by Navico, which owns Simrad, Lowrance and B&G. I don't know if any of the Navman products survived the changes beyond their integration into the Northstar line. There may still be some product on shelves out there.
 
As Matt said, my motor is carburated. What appears to have happened is that when Navman was purchased by a company that also manufactures GPS equipment that can interface with engine operating data they shut down the Navman line. No use in competing with yourself I suppose.

Floscan is an option but I'd be just as well of to sell my Elite 5 and upgrade to unit with engine data compatability.

If anyone knows of a Navman 2100 for sale please let me know.

Thanks,
CV
 
This morning I was busy looking on the web for a new suite of instruments to replace my Navman instruments that are loosing the led data. After a while, I switched over to look at the most recent postings on the C-Brats site and fortunately, I saw the link that showed how to repair failing Navman instruments. I've ordered the recommended donor instrument to get the needed repair part and look forward to not spending at least $1800 for instruments plus the man hours required to install them.
For those of you that know Navman instruments, go to this site and view what looks exactly like the Navman and later Northstar instruments. http://www.plastimo.com/uk/pdfbase/advansea.pdf
 
CV,

I priced out fuel flow using the Lowrance LMF-200 with EP-10 fuel sensor and other parts to start up a NMEA-2000 network on Amazon and it came in right at $301. For a fuel flow meter that isn't bad. You won't get MPG off it since there is no GPS input (LGC-4000 another $200) or be able to use fuel remaining (EP-85r about $85) but think of the adventures you can have in NMEA 2000. I don't think the 5500 Floscan system has a serial GPS interface for NMEA 0183 and it is in the same price range as the Lowrance without the flexibility.

Tom
 
I've discovered the expensive way that the little paddle operated fuel flow meters like the one you are looking at simply don't work with 50 hp engines, particularly fuel injected. There is a kind of pulsing draw of fuel with the EFI engines and they are so fuel stingy that even a WOT the two I've tried simply didn't function any better than my making a wild guess at fuel flow and economy. I'm going to put up the grand or so to attach to the computer of my twin Suzi's.

So, be cautious. Maybe the turbine/paddle type will work with carbed engines.
 
I installed a Flow scan fuel flow meter. I have a 2007 Honda 150. On the helm I also have an older Garman GPS. On the top, I have speed and distance. At a glance, I can tell how fast and look to see how many gallons I am using per hour and distance. I am able to trim and see at a glance the results. I also watch my tachometer. I do believe in knowing my fuel consumption. I like the totalizer feature. I do keep a log of my trips, fuel used, max speed, average speed, moving time and total distance. I also include when I got fuel, where, how much and price per gallon. Neal
 
The manual for both the Yamaha 50 and the multi function Yamaha Gauge say that the fuel metering function can be used. Yamaha transducer is different then the Simrad transducer is--but appears to be a paddle wheel type of flow meter.
 
I installed a Navman fuel flow meter on Journey On. It has a turbine/paddlewheel type sensor, which died on me a couple of years ago. I finally blew a stream of air through the turbine and loand behold, it came to life.

Here's what that unit taught me. First, when we're cruising and running about 10-14 knts, I'm getting about 2 mpg. It depends on 2 things: sea state and how much Judy has packed into the boat, over neither of which do I have any control. Neither speed or trim seem to matter as long as we're up on plane. If everything is right, we're up to 2.5 mpg, which is a 25% increase. When we're going a hull speed (~6-7 knts,) we're getting 4-5 knts. Actually, that's probably a little above hull speed, since at 5 knts we're getting ~6mpg. So after a while, you just ignore it, since there's not much you can do, given the circumstances.

However, it does keep track of your fuel usage and does it with remarkable accuracy. I appreciate this.

The Honda 150 is fuel injected and has a 2 stage fuel pressure system. Nevertheless the device chugs merrily along.

Boris
 
We have a Honda digital speedometer which has the mpg and gph readings. 99% of the time I put the speed of the boat at the speed that burns 1 gph - usually around 5 to 6kts. I wouldn't run the boat without a fuel meter - its not the money for the fuel but the inconvenience of having to find and go to the fuel dock.
 
I am waiting for confirmation, but it looks like the L50s have a NMEA output that will connect to the existing network of my HDS8 (using a Navico engine interface cable (000-0120-37) and provide a bunch of info including fuel rate. If this works, then it is the most cost effective option and does not require an additional paddle wheel device. Sounds promising but I have contacted Lowrance directly to confirm that things should work.
 
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