Digital fuel gauge or fuel totalizer for R44?
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Cherminator
Member Since : 2007
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Digital fuel gauge or fuel totalizer for R44?

10-05-2011 01:19:56


Does anyone know of an aftermarket digital fuel gauge or fuel totalizer that will give me a better idea of how much fuel I have in my R44? The factory gauges really suck and require some time to come up with a "best-guess" estimate.

I've looked into the Insight True Flow 500 and the JPI FloScan FS450, and they are nice for fuel flow, but it looks like you have to manually input how much fuel are in your tanks before each flight.

Isn't there something out there that simply tells you how much total fuel you have in your tanks automatically, using the existing fuel level sensing units?

Replies

MLH
Member Since : 2007
Posts(99)
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10-05-2011 02:25:21
I had the JPI FS 450 in my Raven II, it was accurate to better than a few tenths of a gallon for a full tank used. Nice feature is that it talked to the Garmin 696.
Cherminator
Member Since : 2007
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10-05-2011 02:28:35
I had the JPI FS 450 in my Raven II, it was accurate to better than a few tenths of a gallon for a full tank used. Nice feature is that it talked to the Garmin 696.

Yes, but don't you need to know how much fuel you have and manually input that information before a flight? What if your tanks are only partially full?
Cherminator
Member Since : 2007
Posts(57)
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10-05-2011 04:08:28
Melvyn, did you have a spare hole in your panel for it? I have a seven hole panel and all the holes are filled. Is there a way to mount one of the JPI units somewhere other than in the panel?

The nice thing about the Insight unit is that it doesn't need a display, it simply uses the Fuel Planning page in a Garmin GPS but it's just for fuel planning. It doesn't monitor any engine parameters.

I still would like to find a better fuel gauge though.
IBTM
Member Since : 2007
Posts(206)
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10-06-2011 01:16:13
I think Richard Sears put one in his bird-----might want to contact him
melvynheli
Member Since : 2007
Posts(105)
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10-06-2011 01:39:28
I also have a 7-hole panel and the EDM is located in the lower middle free one. In the R44 picture zone, second page, lower right, last one, I posted a pic of the panel.

Richard Sears installed a JPI800.

If you don?t have an empty hole, I am not sure how to install it, maybe a side panel support.

For only fuel management, the FS450 has the same features.

Melvyn

melvynheli
Member Since : 2007
Posts(105)
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10-06-2011 03:21:43
My experience with a JPI-700 engine analyzer has been most rewarding.
I have all CHTs, EGTs plus fuel flow and  interfaced with the GPS.

All kind of alarms for temperatures, shock cooling early advise, battery voltage, fuel remaining. There are some options like oil temperature and external temperature. The EDM 800 model has also HP, manifold pressure.

There is no connection to the fuel tank gauges so the instrument cannot read the fuel level directly. However, this has proven not to be a problem. If I fill up, the total capacity is already stored in the instrument setup so it is just a matter of keying "full tank amount".

Then the fuel totalizer always takes care of the fuel used and remaining. If I add only a few gallons, I just manually add the amount. I can also deduct any amount if I take out fuel from the tanks. Easy and almost second nature.

The GPS link allows to have a real time display of:  fuel needed to the next check point, the remaining amount and the reserve at the destination, plus actual fuel flow and miles per gallon, which is the key value.

I have a Raven I and I can fine tune the EGTs with carb heat and manifold pressure to minimize the spread down to 40?F, to improve the fuel distribution to even better than an injected engine. I can usually get better than 7.5 NM/Gal.

JPI has a good deal of the EDMs with the fuel flow option. IMHO, the best bang for the buck, never a problem in now 3 years, accuracy is outstanding, better than 1/4 of a gallon in a 3 hours trip.
I do believe it should be a basic instrument in the helicopter. By the way, never a problem with stuck exhaust valves as I can cool down till having 0?F/min plus knowing the actual CHTs. All exhaust valves tolerances are in the middle of the engine specifications.

My 2 cents.
Melvyn
Cherminator
Member Since : 2007
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10-06-2011 10:12:41
I just found this fuel gauge which looks good, but it hasn't been stc'd for Robinson helicopters.  :(

http://www.aerospacelogic.com/index.php?dispatch=products.view&product_id=56
MLH
Member Since : 2007
Posts(99)
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10-08-2011 05:34:08
"What if your tanks are only partially full?"

The 450 allows startup options of: full tank, continue with remaining tank or, how much fuel did you add to the existing tank.
HeloJunkie
Member Since : 2015
Posts(94)
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10-13-2011 08:16:28
I think Richard Sears put one in his bird-----might want to contact him

Tom -

I did. I put in the EDM-800 and Melvin put in the EDM-700 as I recall - both done at the same shop. They are absolutely amazing - the fuel is quite nice when talking to the GPS, but even better is the at-a-glance reading of all CHTs and EGTs. I imagine if something were going to happen to my engine, I would see an indication on the EDM-800 before the engine gave up the ghost. Its in my scan about every 10 seconds!