Jett fuel consumption
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Jett fuel consumption
Hi,
is there a fuel chart for the Jett engines (sx 50, 60LX, 90LX)?
I am always searching for data when choosing an engine/ fuel tank/ for a project
Right now I want to find info on how much fuel the 60LX needs for full power run for 10 a min flight
Thanks for the info,
V.
is there a fuel chart for the Jett engines (sx 50, 60LX, 90LX)?
I am always searching for data when choosing an engine/ fuel tank/ for a project
Right now I want to find info on how much fuel the 60LX needs for full power run for 10 a min flight
Thanks for the info,
V.
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RE: Jett fuel consumption
nope, there is no chart.
The 60LX burns just about the same fuel at full throttle as the 428 engine. With a 8.8x9 prop, roughly 19,000 rpm, figure on 1.5 oz per minute. We can typically start, launch, fly for about 4 minutes total on a 6oz fuel load in the Q-500 - that would be letting the tank run dry (usually you want to shut off before that).
Bubble-Jett or Tetra bubble tank will give you the best fuel usage for a given size tank, since you can use 100% of the available fuel. Conventional tanks - consider 20% of the fuel capacity as un-usable fuel (foam/air/lean danger zone)
On the 60LX, throttle back a bit when possible (starting, take-off, turns, downlines, etc) and you can get a bit more air time. So for 10 minutes of typical sport flying operation (start to shutdown) you can get away with a 12oz-14oz tank.
SJ-90L burns just about 1.8 oz per minute at full throttle.
90LX burns about 2 oz per minute at full throttle.
SJ-46 and SJ-50 with the standard jett-stream muffler (stock piece) burn closer to 1.3 oz per minute.
Just as a reference here ---- your milage (minutage?) may vary
The 60LX burns just about the same fuel at full throttle as the 428 engine. With a 8.8x9 prop, roughly 19,000 rpm, figure on 1.5 oz per minute. We can typically start, launch, fly for about 4 minutes total on a 6oz fuel load in the Q-500 - that would be letting the tank run dry (usually you want to shut off before that).
Bubble-Jett or Tetra bubble tank will give you the best fuel usage for a given size tank, since you can use 100% of the available fuel. Conventional tanks - consider 20% of the fuel capacity as un-usable fuel (foam/air/lean danger zone)
On the 60LX, throttle back a bit when possible (starting, take-off, turns, downlines, etc) and you can get a bit more air time. So for 10 minutes of typical sport flying operation (start to shutdown) you can get away with a 12oz-14oz tank.
SJ-90L burns just about 1.8 oz per minute at full throttle.
90LX burns about 2 oz per minute at full throttle.
SJ-46 and SJ-50 with the standard jett-stream muffler (stock piece) burn closer to 1.3 oz per minute.
Just as a reference here ---- your milage (minutage?) may vary