Prop thrust calculator:

http://adamone.rchomepage.com/calc_thrust.htm

Well it is just about complete and ready to maiden. Installed Spektrum receiver and tucked in all the wiring. Made a deck behind the servo deck and installed the FY-31a on that balsa deck also.
The MasterAirscrew 9x7 three blade props arrived, installed them, and then tested the thrust, not much of an improvement over the 4-blade props I tested previously:

Master Airscrew 9x7 3 blade
Eflight Park 480 x 2 1020 kv
4400 mah 3 cell 40c batt
Total thrust: 5 lbs 2 oz

The all up weight is now 6 lbs 12 oz giving it a thrust to weight ratio of 0.80.
Will try to maiden this weekend and post video

Originally Posted by ecworks

Well it is just about complete and ready to maiden. Installed Spektrum receiver and tucked in all the wiring. Made a deck behind the servo deck and installed the FY-31a on that balsa deck also.
The MasterAirscrew 9x7 three blade props arrived, installed them, and then tested the thrust, not much of an improvement over the 4-blade props I tested previously:

Master Airscrew 9x7 3 blade
Eflight Park 480 x 2 1020 kv
4400 mah 3 cell 40c batt
Total thrust: 5 lbs 2 oz

The all up weight is now 6 lbs 12 oz giving it a thrust to weight ratio of 0.80.
Will try to maiden this weekend and post video

VERY nice work ECworks, Your C-160 has a Huge Broad wing! She's Gonna create a TON of lift and fly like a homesick angel!

Outstanding work - put a brick in it and fly! :-)

Originally Posted by demondriver

VERY nice work ECworks, Your C-160 has a Huge Broad wing! She's Gonna create a TON of lift and fly like a homesick angel!

That's what I'm hoping will happen. The stock wing made me nervous. (49 oz per sq. ft. wing loading!)

Originally Posted by ruff1

Outstanding work - put a brick in it and fly! :-)

Hopefully today. I'll record the flight with this:

http://www.rcflighttest.com/home/201...ain-camera-16/

Maidened it today, flew great, Twinstar II wing is a winner. Took off within 20' climbed strong and flew very stable. Dropped flaps, no ballooning, and it came in very nice. Later I'll see how slow she will land.

Here is the video:

Transall C-160 1st flight (5 min 10 sec)

1st FPV flight with the C-160

Transall C-160 2nd flight FPV (6 min 39 sec)

Very nice.. Congrats.

Yes indeed A great Maiden Flight!, I liked the on-board camera view as well!

She must soar Like a Condor!

Congrads-BIG-TIME!

I hope mine flies as nice as that. Congrats

Originally Posted by demondriver

Yes indeed A great Maiden Flight!, I liked the on-board camera view as well!

She must soar Like a Condor!

Congrads-BIG-TIME!

She flies like a heavy Twinstar. I've actually flown my Twinstar pretty close to this weight (6 lbs +) And it handles much like the Twinstar in the turns, no surprises.

Camera mount for filming the C-160, 2 foot stick that projects about 16" in front of the nose:

Camera mount #2 for C-160 footage (0 min 27 sec)

Originally Posted by ecworks

Camera mount for filming the C-160, 2 foot stick that projects about 16" in front of the nose:

Just be sure to check that CG before you T.O...... Even small amounts of weight can make a HUGE difference when put out on the end of a boom like that. The fulcrum effect is far greater than most folks would expect.

Classic Sesame Street animation- seesaw trouble (0 min 30 sec)

Originally Posted by jmpdgs

Just be sure to check that CG before you T.O...... Even small amounts of weight can make a HUGE difference when put out on the end of a boom like that. The fulcrum effect is far greater than most folks would expect.

http://youtu.be/qvz25Gt4QcU

Joe makes a good point about CG and where you place weight on any plane.

Joe . . .. . . .No more sesame street for you! LMAO->