Freewing 70mm Yak EDF 6s

[rc4ever]

Hi guys just pulled the trigger and ordered me a 70mm Yak 6s, have a question....how well does this jet rotate off of grass runway??

[Alpha]

"Grass runway" is a wide term. The Yak-130's wheels are small; being a 70mm jet it's the small size of jet which uses retracts. Off the top of my head the main wheels are about 2" tall or so. Accordingly, you'll want grass that covers no more than half of the wheel when its sitting on the ground, otherwise the resistance will prevent the wheel from rolling. Assuming you have level grass that meets this condition, with ~30 degrees of flap you'll rotate easily and quickly. The 70mm F-104 has the same power system and even smaller wheels. Here's a video showing Don Slusarczyk flying his F-104 off of grass. Doesn't have a problem.

https://www.youtube.com/watch?v=Sh_HukTiyKE

[rc4ever]

"Grass runway" is a wide term. The Yak-130's wheels are small; being a 70mm jet it's the small size of jet which uses retracts. Off the top of my head the main wheels are about 2" tall or so. Accordingly, you'll want grass that covers no more than half of the wheel when its sitting on the ground, otherwise the resistance will prevent the wheel from rolling. Assuming you have level grass that meets this condition, with ~30 degrees of flap you'll rotate easily and quickly. The 70mm F-104 has the same power system and even smaller wheels. Here's a video showing Don Slusarczyk flying his F-104 off of grass. Doesn't have a problem.

https://www.youtube.com/watch?v=Sh_HukTiyKE

Thanks Alpha for responding and video, yes my grass fiels is very short, just a little longer to rotate than my bigger jets.

[Alpha]

This Yak-130 wants to fly. Rotation is short even on pavement. I think you'll be fine as long as the wheels aren't submerged and the runway isn't pocked.

[OsideRCflyer]

the landing gear is very stout! I only fly my jets on pavement, but landing the Yak on grass would be great. It's a quick plane and lands fast even with full flaps. I fly with 4000 mah 60c and 3300 mah 60c. Lighter battery would probably work best and with proper CG lands slower. You'll love it.

[rc4ever]

the landing gear is very stout! I only fly my jets on pavement, but landing the Yak on grass would be great. It's a quick plane and lands fast even with full flaps. I fly with 4000 mah 60c and 3300 mah 60c. Lighter battery would probably work best and with proper CG lands slower. You'll love it.

Thanks guys, i just finished putting her together, was a breeze!!! i cg'd her with a Admiral 3300, cant wait to fly her.

[Ron1950]

had my eyes on the yak and thinking of picking one up...espically if the landing gear is half as strong as the real Russian plane....a real Russian airfield is practically all grass anyway