Official Freewing 90mm F-4 Phantom II Thread

[GliderGuy]

Hi Locharrow,

I had a PJ-50 flap horn working loose. So I was getting a slight asymmetric flap deployment.

I can tell you from experience that the gyro DID NOT stop the slight roll. It may have reduced the amount of toll, but she still rolled. Maybe because I had the gyro gain at 30 to 40%. A higher setting may have locked down the roll….probably would have.

Others with more gyro knowledge will need to add their comments.

-GG

[locharrow]

GG, if I use half flap on take off and it is in trim then on landing come through half flap to full flap and the plane dips a wing, how does the gyro know whether it was a gust of wind or one flap a few degrees out of trim? Would the gyro not bring it back to level fight using ailerons to compensate or is the gyro only a single momentary correction? Just asking, don't have the problem. !

[GliderGuy]

Gentlemen,hipeothitile:face_with_symbols_o hypathitilec:face_with_symbols_ohypotheatrice:face _with_symbols_o ..a wee question. While making adjustments to my flaps it crossed my mind that if one flap was a bit more effective would the gyro correct any bank induced by the discrepancy?

No sir….it is not the way they function.
The gyro will counter gust upsets and dynamic instability. It won’t fix out-of-rig planes. Rig/trim manually as always.

-GG

[Elbee]

LA, Hypothetice loquendo. Best, LB

[locharrow]

Gentlemen,hipeothitile:face_with_symbols_o hypathitilec:face_with_symbols_ohypotheatrice:face _with_symbols_o ..a wee question. While making adjustments to my flaps it crossed my mind that if one flap was a bit more effective would the gyro correct any bank induced by the discrepancy?

[locharrow]

Just grabbed a quick flight with the switch at the correct position....:scream: I forgot how agile this F4 is! Nearly had heart attack after yesterday's sedate fly round! Needs a few wee adjustments but it flies very smoothly, not a lot of wind but enough to know the difference with the gyro.:f4::punch:

[Elbee]

I would love to get the F4

CC, Just Do It. Best, LB

[Evan D]

I still have the original servo and it's mounting. I did upgrade the pushrod and links.

[locharrow]

C…..there is very little you have to do…..stronger pushrod and as far as the servo is concerned I put in good standard size analog servo and it’s been in for several years now without any trouble. I’m a simple old codger and if I can do it……….anyone can do it. 🥸

[Coconut]

Good news, it live to fly another day. I would love to get the F4. I'm just hesitant to do the elevator modification.

[locharrow]

Spot on…C. :rage:

[Coconut]

Gyro has SAFE that won't allow it to roll?

[locharrow]

Great flying day today so out with the F4...No one at the park and the grass newly cut. Changed the model on the tx to F4 got a switch warning as usual for gyro switch sorted that by throwing the switch and it was good to go. All surfaces behaving. Threw the gyro switch back to normal and taxied out. Power up and it lifted off very smoothly. Let it get out a fair bit then gently banked round for a fast diving run to pull up into a vertical roll. Pulled up not too bad but it simply would not roll. :face_with_symbols_o Brought it back down a bit and flew a very gentle pattern, landed like a dream and taxied back to the car.

This is a quizz...............

[davegee]

https://www.hobbysquawk.com/help#con...content_topics

Dave, click the link above and everything you need should be there. Glad you're thinking of doing this. Most excellent. Best, LB

Thanks, Steve. Couple of things. First, I got an email from Prusa this morning. They profusely apologized for not getting to my printer earlier for the repair. But they are on it now. Hopefully they'll get it working to where I can just take the STLs, slice them for G Code files, and Actually print them up! I'll let you know when I get the printer back, not sure when.

I just looked at your wheel well and gear pics on your Corsair. What really stood out to me was your excellent weathering of the tires and wheels. Looks like they've been out in the South Pacific sun and coral! Well done!

[Elbee]

Where would I put it in the scheme of having some proper place?Davegee

https://www.hobbysquawk.com/help#con...content_topics

Dave, click the link above and everything you need should be there. Glad you're thinking of doing this. Most excellent. Best, LB

[davegee]

Will do, Rex. At some point, I'll need to cull a few planes from my collection for anything new I want to do, but mentally I haven't arrived at that point yet of letting any go.

Things are full steam ahead with those contract models now. The biggest project for me will be repurposing a fiberglass 1:15 scale Shuttle Orbiter model, cutting out a payload bay, and doing a scale interior as well as figure out how to hang it upside down with the bay doors open, a model with the dimensions of 4 feet by 8 feet. It will be a challenge, but I look forward to it.

Cheers

Dave

Hi Elbee: I think it would be ok if you think that would be of some interest to others. Where would I put it in the scheme of having some proper place for it to be seen and not horn in on other airplanes or interest topics of other folks?

Davegee

[jetfool]

I second what Elbee said

[Elbee]

Dave, uncertain if you are allowed to show your build process/progress, but if so, may I suggest you start a build log here at the "Squawk" in your own thread.
I, for one, would very interested in watching your process and progress. Just a thought. Best, Steve

[davegee]

Davegee'
Your Spit looks great. Learning to keep these foam models in flying shape is like learning to build balsa models to get strength without adding weight. A new learning experience that I enjoy in my modeling endeavors. Hope our weather improves, still windy and cold today Damp air goes right to my bones these days. Please keep us informed on your NASM endeavors, always good to see things progressing that go to museums.
Nice to hear you have a hanger full of interesting aircraft. My workroom, garage and attic are full of older nitro models that I should sell so I can purchase more of Motions planes. I hate to get rid of them after all these years and no one wants to pay anything for nitro anymore. Rex

Will do, Rex. At some point, I'll need to cull a few planes from my collection for anything new I want to do, but mentally I haven't arrived at that point yet of letting any go.

Things are full steam ahead with those contract models now. The biggest project for me will be repurposing a fiberglass 1:15 scale Shuttle Orbiter model, cutting out a payload bay, and doing a scale interior as well as figure out how to hang it upside down with the bay doors open, a model with the dimensions of 4 feet by 8 feet. It will be a challenge, but I look forward to it.

Cheers

Dave

[jetfool]

Davegee'
Your Spit looks great. Learning to keep these foam models in flying shape is like learning to build balsa models to get strength without adding weight. A new learning experience that I enjoy in my modeling endeavors. Hope our weather improves, still windy and cold today Damp air goes right to my bones these days. Please keep us informed on your NASM endeavors, always good to see things progressing that go to museums.
Nice to hear you have a hanger full of interesting aircraft. My workroom, garage and attic are full of older nitro models that I should sell so I can purchase more of Motions planes. I hate to get rid of them after all these years and no one wants to pay anything for nitro anymore. Rex