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Fuel Gauge

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26 Nov 2017 20:23 - 26 Nov 2017 20:37 #1309 by Gordie Meade
Replied by Gordie Meade on topic Fuel Gauge
I have now flown the fuel flow meter for 5 hours or so. It has taught me a bunch already. I assumed my cruise fuel burn was 5-5 1/2 gal/hr as that is what all the literature says so with 22 usable gallons of fuel, I was assuming over three hours with reserves. In flying, the flow meter indicates 6.3 gal/hr at 2350-2375 rpm. I thought this was high as the meter had not been calibrated but, the flow meter said I had burned 11.6 gallons of fuel and when I filled the tanks, I put in 11.8 gallons. Looks like the K factor of the meter is darn close.
According to the meter, wide open climb is 8.1 gal/hr, cruise at 2400 is 6.5 gal/hr, cruise at 2300 is 6.2 gal/hr, cruise at 2200 is 5.9 gal/hr, 2100 is 4.3 gal/hr and 2000 is 4.1 gal/hr. The speed difference between 2400 and 2200 is 5 mph at 3500 feet. Not what I was anticipating at all. Knowing what I know now, I would only plan for no more than 2 1/2 hour cruise before refueling. That's not too bad as that's about how long my bladder will tolerate anyway.
Last edit: 26 Nov 2017 20:37 by Gordie Meade. Reason: typo

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22 Nov 2017 22:50 #1305 by Warren D. Hampton
Replied by Warren D. Hampton on topic Fuel Gauge
sounds as if you are onto something useful there.

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22 Nov 2017 19:07 - 23 Nov 2017 13:43 #1304 by Gordie Meade
Replied by Gordie Meade on topic Fuel Gauge
I got 61F out of the shop yesterday and flew it home. The meter was working but I had no idea how much fuel I started with, just that I had enough to get home. This morning I filled up and took a two hour(ish) flight. I went to Marianna FL, to Thomasville GA, a simulated instrument run to the Seminole VOR, then back to Quincy FL. I played with all the modes during the flight. Time of remaining fuel, fuel remaining, fuel used, and fuel flow rate. It worked exactly as advertised. I will not know how accurate the meter is right now until I fill up on Friday. The EI meter has an adjustable "K" factor that you can use to fine tune the flow rates so that the meter is exactly accurate. I will start that Friday. The instructions say it may take four or five adjustments to the K factor to get it right.
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Last edit: 23 Nov 2017 13:43 by Gordie Meade. Reason: typo

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21 Nov 2017 23:39 #1301 by Warren D. Hampton
Replied by Warren D. Hampton on topic Fuel Gauge
How is the job coming along?11/21

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01 Nov 2017 18:52 #1275 by Gordie Meade
Replied by Gordie Meade on topic Fuel Gauge
M-10 is in the shop to get the fuel flow meter installed. It should take about two weeks as the instrument panel (right side) has to be sent off to have the hole for the gauge laser cut.

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26 Oct 2017 20:20 #1263 by Scott Engelhart
Replied by Scott Engelhart on topic Fuel Gauge
I have looked at that instrument from EI also, look forward to hearing your report.

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