FF22 Dawn Patrol Nieuport 28

[Matagami Designs]

Got the CAD finished and parts have been cut on the timesav. Started on the fuselage internals and so far so good. Have the skins rolled and taped to help keep their form for gluing later in the future.

 

[Matagami Designs]

The tail is now glued in place. Not my cleanest or straightest build but it's coming together. Wondering now what I'm going to do for mounting the tail servos. 🤔

 

[Bo123]

The tail is now glued in place. Not my cleanest or straightest build but it's coming together. Wondering now what I'm going to do for mounting the tail servos. 🤔 View attachment 227099

hot glue. A lot of it.

 

[willsonman]

You've got a few days to figure it out LOL

 

[leaded50]

put the servos inside the cockpit, as low as possible., even if necessary cut out a "hatch" in the bottom. On my 31, i did that.

 

[Matagami Designs]

put the servos inside the cockpit, as low as possible., even if necessary cut out a "hatch" in the bottom. On my 31, i did that.

I like the idea of these being hidden but i didn't run any tubing to keep the linkages from flexing so I'm leaning towards putting them out near the hinges and just dealing with the CG issues of placing them on the tail.

 

[willsonman]

You say that now... 1 pound of lead later you may regret that. My Tummelisa has the servos just below the cockpit area with pull-pull lines on the rudder and a push rod on the elevator... It NEEDS a 5800mAh 3S pack to balance. Pretty ridiculous how heavy the engines were for how little HP they made.

 

[Matagami Designs]

You say that now... 1 pound of lead later you may regret that. My Tummelisa has the servos just below the cockpit area with pull-pull lines on the rudder and a push rod on the elevator... It NEEDS a 5800mAh 3S pack to balance. Pretty ridiculous how heavy the engines were for how little HP they made.

Why is it pull pull on just the rudder? What do you use for these linkages? Is there a DIY way to set it up with fishing line or something easy?

 

[Baron VonHelton]

Why is it pull pull on just the rudder? What do you use for these linkages? Is there a DIY way to set it up with fishing line or something easy?

No! No fishing line for control surfaces! Take it from someone who knows!

I've had nothing but grief trying to use fishing line for my rudder & elevator.

Now having said that, fishing line is great for wing wires, cabane strut wires & wheel wiring for added support. Makes the plane VERY strong.

 

[NM156]

You say that now... 1 pound of lead later you may regret that. My Tummelisa has the servos just below the cockpit area with pull-pull lines on the rudder and a push rod on the elevator... It NEEDS a 5800mAh 3S pack to balance. Pretty ridiculous how heavy the engines were for how little HP they made.

100% agree with willsonman. The Nieuport also has a relatively long tail moment that will make matters worse.

NM156

 

[NM156]

Why is it pull pull on just the rudder? What do you use for these linkages? Is there a DIY way to set it up with fishing line or something easy?

The rudder requires symmetrical torque for surface deflection. A pushrod generally will generally bend in compression.
A restraint tube can be used to contain this undesired movement, which adds weight.

It works well on elevators because it normally set up as "pull" for up, and in tension it can't bend.
(Forces are typically much lower on down elevator for FT type models)

You might find this link helpful
https://www.flyingrc.net/pullpull.html

NM156

 

[Matagami Designs]

Tail servos installed. What a pain. I ended up putting them under the cockpit and made pushrods out of bamboo. Cut a little under length drilled a hole an inch from the end and then CA glued the .039" wire on the ends and wrapped with 50 lb fishing line braid then CA again. Came out pretty well I think but I am a bit concerned about the adjusters I used as I don't want these coming loose but they need to freely pivot on the control horns. I think I may also end up cutting the tail off and re gluing it to straighten it back since it ended up being tilted to one side. I think it will still fly ok if I don't but it will bug me if it's not level to the wings. This will add tail weight so I'm gonna finish off the wings and see how much counterbalance I actually need.

 

[Matagami Designs]

Top wing is fabricated. Held in place with 3d printed cabanes and 3mm fasteners and heat inserts. Wondering if I can come up with a way to bolt on the bottom wing 🤔 or maybe I'll just glue it in place but as it sits the top can be removed. Now that the wings are done its starting to become apparent the tail needs a pretty big adjustment to square it up. 😵

 

[Tench745]

Yeah, that tail is pretty significantly out of square. Luckily you have a round fuselage so cutting and regluing should be pretty easy.

 

[willsonman]

Why is it pull pull on just the rudder? What do you use for these linkages? Is there a DIY way to set it up with fishing line or something easy?

Th rudder is usually easier to setup than the elevator. The geometry is usually the issue for running the lines. Also, there are twice as many lines to run on the elevaotrS. It's a compromise here where you are putting in effort to save a little weight here and there. I see your bamboo trick and that should help keep things a bit stiff for this build. Not sure if it will save much weight but even if its a few grams, it's a win. Try to true up that tail, for sure, and you'll have a fine flying machine eventually.

 

[Baron VonHelton]

"Hey Von! How many times should you test fit parts?"
"Yes"

 

[Matagami Designs]

Tail has been squared up to the wings. I'm a little concerned the elevator may have some negative incidence but not sure... At this point idk if It's a problem or not. Other than that the main thing left is figure out how to make it roll on the ground. What wheels will it have? Think I might try to fabricate something tomorrow. Gonna go ahead and put some minwax on it so I can spray it down and try to hide the ugly a bit

 

[Matagami Designs]

FF22 BOUND!

 

[danskis]

It would be great to come up with some sort of jig to figure out the incidence/decalage of planes that don't have a flat line internal reference line/frame.

 

[Matagami Designs]

It would be great to come up with some sort of jig to figure out the incidence/decalage of planes that don't have a flat line internal reference line/frame.

Well the tail incidence wasn't an issue the maiden was successful. Only issue was a busted wheel on landing. I believe @wilmracer might have took some video too.