Question on the f15 90mm

[Reptielenfreak]

So the f15 90mm is called heavy, a pig and all those stuff. But compared to the f22 90mm its only a 100grams heavyer if i read the specs, Is it such a difference? what is making it fly slow/heavy?

[Reptielenfreak]

FYI
Version Info: This is the High Performance version of the Freewing F-15C. As of 6/24/2024, this version includes a powerful 3668-19600Kv inrunner motor with 12-Blade EDF fan unit and a 120A ESC with thrust reversing.

[Evan D]

Wing loading. F22 has a huge wing.

[Reptielenfreak]

So does it need more runway aswell? My f22 on my field is sometimes on the edge when it comes to takeoffs if there is no wind.

[stojakovic]

F15 without missles,with a little flap ,with 780G battery.it will takeoff less than 50m.

[Reptielenfreak]

That would be perfect. I have about 70meters thanks for the info

[shortround91]

I have the new version F15 HP use take off flaps have no issue taking off from a grass field with field to spare. She flies excellent sounds amazing with top notch landing gear, I own the 90mm J10 also and to me the F15 is much easier to land on our bumpy grass field. Only down side is DO NOT try to high alpha the F15 she doesn’t like that. Very very forgiving plane otherwise

[Reptielenfreak]

I have the new version F15 HP use take off flaps have no issue taking off from a grass field with field to spare. She flies excellent sounds amazing with top notch landing gear, I own the 90mm J10 also and to me the F15 is much easier to land on our bumpy grass field. Only down side is DO NOT try to high alpha the F15 she doesn’t like that. Very very forgiving plane otherwise

Thank you for the info! I have a +-75m runway, its basicly a big cloth on top of grass. So it is very bumpy but smooth enough to get some speed.

Thanks for the high-alfa tip. Will not try that one, haha.

[shortround91]

Definitely don’t won’t end well, I love the F15 other than the alpha such a forgiving jet take offs landings it does so well and relaxed