I’m about to pull the trigger on this plane. Has anyone swapped in a 4s fan? I’ve got an Xfly 4s 64mm and a 40 amp esc sitting on the shelf that I could put in it. I’m sure the weight would be increased and flight times decreased, but I bet it would be a rocket.
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Official Freewing 64mm Lippisch P.15 Thread
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Originally posted by AndrewF View PostI’m about to pull the trigger on this plane. Has anyone swapped in a 4s fan? I’ve got an Xfly 4s 64mm and a 40 amp esc sitting on the shelf that I could put in it. I’m sure the weight would be increased and flight times decreased, but I bet it would be a rocket.
A 2200mah, 3s battery fit just about right. A 4s battery may limit you to less mah.
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Originally posted by xviper View PostI found this little jet to already be a rocket but I guess some like it even hotter. No, I haven't done the swap, but with the X-Fly 4s fan, you'll double your thrust but it'll draw 50A to do it. It's also 5mm longer and 1.5mm smaller diameter. It may or may not fit without some sealing and/or foam removal.
A 2200mah, 3s battery fit just about right. A 4s battery may limit you to less mah.
move got some 1800 mah 4s packs that I think I will use.
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Originally posted by AndrewF View Post
I might have to do it just out of curiosity to see what will happen lol for science right?
move got some 1800 mah 4s packs that I think I will use.
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Originally posted by xviper View PostIf I still had mine, I'd do it just for the giggles and to get a change of shorts. I was in science for 20 years. It's sometimes over-rated. Yes, I have 1800, 4s LiPos that weigh about the same as my 2200, 3s (and same dimension, too).
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Originally posted by AndrewF View PostGot the Xfly 4s fan fitted. It just took some carving around the inlet ring. I will hopefully maiden it today, fingers crossed.
Is there anyone here who flies with the landing gear? I’m not a fan of hand launching, but I’m worried the landing gear will hurt performance.
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Maidened the xfly P.15 today. First flight was fairly smooth once it got trimmed. It’s an absolute rocket with the new fan, I did one high speed pass where I went full throttle for maybe 2 seconds and it hit 105 mph, straight and level. Sadly on the second launch it got a little Wild, breaking the nose off. I was flying with a 1800 mah 4s pack with a timer set for 3:00, it came down with 50% left. Most of the flight was done with 1/4 to 1/2 throttle.
I should add, all up weight was 560 grams, I did a static thrust test and it produced 895 grams.
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Unfortunately I'm out of town for a few days, so I can't give you a measurement. But it's the intersection of the wing joint and the panel lines, which I think is the manual's CG if I'm remembering correctly. I balance upside down. And I do use the 4s 2200 as I stated, kind of wedged with the rear of the battery up off the ply plate and velcro at the front. I trimmed the canopy to both fit the battery and hold the front edge. It definitely ugly's up the canopy but is functional. It's so fast and small I don't notice. I'm sure I'll eventually get another lippisch and do a better job somehow to fit the 2200 and not cut the canopy. Man I wish they'd make a bigger version too! So fun!
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Originally posted by SanExup View PostUnfortunately I'm out of town for a few days, so I can't give you a measurement. But it's the intersection of the wing joint and the panel lines, which I think is the manual's CG if I'm remembering correctly. I balance upside down. And I do use the 4s 2200 as I stated, kind of wedged with the rear of the battery up off the ply plate and velcro at the front. I trimmed the canopy to both fit the battery and hold the front edge. It definitely ugly's up the canopy but is functional. It's so fast and small I don't notice. I'm sure I'll eventually get another lippisch and do a better job somehow to fit the 2200 and not cut the canopy. Man I wish they'd make a bigger version too! So fun!
gps speedometer.
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