ORIGINAL: Maudib
A 730 mah nimh battery is a smidge over 2 oz.
As skypilot one stated, you don't need heavy 6-7 oz H9 rails... but rather at best, 3 oz standoffs.
So split the difference... 3.25 lbs.
But I disagree about tank size... It hink most would put a 20 oz tank with a 1.60 and get about 12 minutes... You could put in a 12 oz tank with the BME and get more than that... so take off weight in fuel is a half lb. more in glow fuel...
Really theu are prett6y much neck and neck. Then add to that the hoop jumping a lot of guys end up going through to get a consistent 1.60... pumps, regulators, add a little weight...
Cost? In a seasons flights you'd get all your money back in fuel savings.
Lastly... see how much a used 1.60fx s worth and see what a used DA50, or BME 50, etc is worth...
Lots of benefits with gas... even if it was only not having to de-slime your plane every evening...
ORIGINAL: STG
You caught that I missed the numbers also, right? Looks like we are closer to 3.5pounds RTF than 3.
2.1oz motor
ignition to 4 oz.
pitts to 6 oz.
battery to 4 oz.
switch to .6 oz.
mount to 6 oz.
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So it's more like 3.5 pounds.
Hope you don't think I am trying to talk any into the Glow instead of this gas motor--just trying to find accurate numbers.
On the 1.6FX--I have had 4 of them on 11 to 13 pound planes. With the way I fly I get better than 1oz min(mix of 3D and IMAC). 16oz tank is more than enough for me. I do set up with pump from the get go.
I like the used price of 1.6FX, especially when you can find them NIB with receipt and muffler for about $200.00-- nice.
At better than 1oz min fuel usage and $10.49 gal for 5% at my LHS, and the amount of air time I get, I don't justify the price of gas in 1 season.
Slime has never been an issue with the 1.6. I have always run pitts mufflers with extensions or now a pipe.
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3.25lbs sounds very good to me--along with great performance. [sm=thumbup.gif]