Hi Dr I did finally fing the weight of a HK 3226 on a superchief 5.1 from the other tuner that actually post his numbers with nothing to hide. Now the boys can surely can ger excited about my little power dwarf in a speedfire2 or similar hotliners or F3S speed planes After reading this data .
Have a read Squawkers and enjoy the photos....
"Hello Steve,
you can rejoice, the 3226 with the 5:1 Superchief has even set a new record.
I decided on the 5:1, because with the gearbox drive, the power comes more from the speed.
As a 10 poler, it rotates a maximum of 49000U on the YGE, which it does without complaint, which is then 9800U, I don't need more than that accelerated with the GM18x22.
I wound it with max. filling degree to 1160U/V and operate it on the modified Opto135 with 3x SLS 4s1800 2NOC.
The 350g drive turns the GM18x22 with 8800U at 9.9kW 43V 230A on the test bench, and even with 80% efficiency at 88% speed stiffness, all measured with Unilog2, according to the speed calculator at least 12kg thrust.
After 5x 3sec with a 20sec break, the gearbox has 50°, the motor 70° and the ESC 75, all without cooling air flow on the test bench.
But the ESC gets a heat sink that is screwed tightly to the top of the fuselage so that the motor cables do not drag on the bell.
So the 250g motor has an output of 40W/g and thus takes the lonely lead, it had already struck me very positively 8 years ago.
However, it is already waving the white flag, the synclostprotection in the YGE has already mentioned so that it reduces the PWM to 99%.
When the voltage drops and the load falls in the air, it quickly goes to 100%, so it's designed just right.
Amazing that the 2NOC cells last at 48° before heated 125C with 3.5V/cell for 1-2sec, after that the load so the current decreases by 40% anyway.
The gearbox still seems underchallenged, only the GM spinner is at its torque limit, the shaft flattening is counterproductive.
If Christian's feet fall asleep, I still have the GM17x26, which is rotated at 9200U and should allow climbing over 100m/s.
When the 2nd fuselage is there, everything will be installed, hope I can get in the fuselage with the engine cables, I'll get to just under 2kg so 5kW/kg.
Then it's time to wait for good weather again."
VG
Thomas (Schmiddi)
Have a read Squawkers and enjoy the photos....

"Hello Steve,
you can rejoice, the 3226 with the 5:1 Superchief has even set a new record.
I decided on the 5:1, because with the gearbox drive, the power comes more from the speed.
As a 10 poler, it rotates a maximum of 49000U on the YGE, which it does without complaint, which is then 9800U, I don't need more than that accelerated with the GM18x22.
I wound it with max. filling degree to 1160U/V and operate it on the modified Opto135 with 3x SLS 4s1800 2NOC.
The 350g drive turns the GM18x22 with 8800U at 9.9kW 43V 230A on the test bench, and even with 80% efficiency at 88% speed stiffness, all measured with Unilog2, according to the speed calculator at least 12kg thrust.
After 5x 3sec with a 20sec break, the gearbox has 50°, the motor 70° and the ESC 75, all without cooling air flow on the test bench.
But the ESC gets a heat sink that is screwed tightly to the top of the fuselage so that the motor cables do not drag on the bell.
So the 250g motor has an output of 40W/g and thus takes the lonely lead, it had already struck me very positively 8 years ago.
However, it is already waving the white flag, the synclostprotection in the YGE has already mentioned so that it reduces the PWM to 99%.
When the voltage drops and the load falls in the air, it quickly goes to 100%, so it's designed just right.
Amazing that the 2NOC cells last at 48° before heated 125C with 3.5V/cell for 1-2sec, after that the load so the current decreases by 40% anyway.
The gearbox still seems underchallenged, only the GM spinner is at its torque limit, the shaft flattening is counterproductive.
If Christian's feet fall asleep, I still have the GM17x26, which is rotated at 9200U and should allow climbing over 100m/s.
When the 2nd fuselage is there, everything will be installed, hope I can get in the fuselage with the engine cables, I'll get to just under 2kg so 5kW/kg.
Then it's time to wait for good weather again."
VG
Thomas (Schmiddi)















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