YC 14 Winter Project

[L Edge]

Yeah, I explored it with a prop and the only use was I could back up the plane and turn it(using the rudder) on our narrow runway. For landings, by the time it went into reverse, I was almost stopped.

My real hope was that I could use it for flying 4D. I even had an APC prop that I bought that they designed so that the thrust was almost the same regardless of direction. ESC didn't advertise that there was a delay of time involved.

See you made the exhaust nozzle oval. Very interested in outcome. Did experiments where exhaust nozzle is sliced at an angle which causes plane to pitch up.

 

[L Edge]

Are you aware of this gentleman's work? One plane does it all from STOL to acrobatic and can be flown in the wind with authority. Also check him out on RC Groups. He definitely knows what he is doing.

 

[bisco]

i built his bushtrottel a couple years ago, because of how his flew, but mine flew like garbage. idk what i did wrong, or i'm a lousy pilot

 

[Mr Man]

How about duck taping binoculars to your head?🤣😅😂

whoops…posted in wrong thread.

 

[telnar1236]

This looks awesome! Any chance of plans when all is said and done?

 

[Burnhard]

This looks awesome! Any chance of plans when all is said and done?

Probably not. I never did plans and this would be similar to a masters series.

I am building from publicly available plans for a paper model which are blown up by 355%. That’s sort of the best starting point. You can buy these plans online for about 10 bucks or so.

 

[Burnhard]

Slow but steady progress. The main fuselage is cut. And parts have been glued. Most electronics have also arrived. This will be a massive bird.

 

[Flying Cherokee]

Lookin’ good!

 

[Burnhard]

Finished the elevator build today. Next stop is the rudder section.

Because of the split Elevator I have put a servo reverser into one side. Not too happy about that. I am using digital servos. Will see whether I can get this reversed by programming.

 

[Burnhard]

Tail section is done. I kept the servo reverser for the one elevator. Tested that quite excessively as the first reverser was faulty and locked the servo after a few inputs. Used a different brand after that.

Will start with the wing next. The wing will have three sections with the center piece being fixed to the fuselage and the outer wings being removable for transport.

 

[L Edge]

Tail section is done. I kept the servo reverser for the one elevator. Tested that quite excessively as the first reverser was faulty and locked the servo after a few inputs. Used a different brand after that. View attachment 247871 Will start with the wing next. The wing will have three sections with the center piece being fixed to the fuselage and the outer wings being removable for transport.

Are you keeping track of all the hours put into building the plane?

 

[Burnhard]

Are you keeping track of all the hours put into building the plane?

Not really. I mostly build on weekends and only a few hours in order to have time for the family. I guess at the end I will probably have spent 100-150h. What takes me quite some time is to figure out how to get things working the way I want to without having plans for that (i.e. for getting the rudder and elevator together, strengthening the structure (remember I build from the plans for a paper model which is effectively just the outside hull), getting the surfaces to move and including the electronics I spent about 15h). On the other hand, cutting the foam board and putting pieces together goes reasonably fast.

 

[Burnhard]

Wondering what to do about the flaps. Have tried different techniques in the past. Stumbled across the video on double slotted flaps. I have also bought special flaps hinges. Wondering whether I should go for RCnerds version or whether I should try a combination.

 

[L Edge]

Wondering what to do about the flaps. Have tried different techniques in the past. Stumbled across the video on double slotted flaps. I have also bought special flaps hinges. Wondering whether I should go for RCnerds version or whether I should try a combination.

Go for double slotted. Be sure you design so it is to scale and re-enforced enough mount to wing so one doesn't rip out. When I experimented with mine, 3 crash heights and I ended up slowing(transmitter) the motors of the servo to slow down flap movement.

 

[Burnhard]

Spent Saturday and Sunday preparing the landing gear. Quite a delicate exercise. For the main gear I started with the replacement part for the Hobyking C130. Had to exchange the wires as the YC14 is much broader and will have double wheels. Had to do a bit of cutting and trimming to get this in the fuse. The wheel size is pretty unique in 51mm in diameter and 15mm in height. Anything bigger does not really fit as the wheelhousing only have a width of about 40mm. Just ordered a second piece of the replacement part for the wheels. For the nosewheel I went for a suspended steerable two wheel version. Still busy with the fitting. Will need another weekend to get this done. Wing will be next.

 

[Burnhard]

She stands on her own feet. Next task is the wings! View attachment IMG_3420.jpeg

 

[Jo's squadron]

She stands on her own feet. Next task is the wings! View attachment 249597 View attachment 249598

Really nice! Hope it flies!

 

[L Edge]

She stands on her own feet. Next task is the wings! View attachment 249597 View attachment 249598

It is really looking good. Did you decide what type of flaps?

 

[Burnhard]

It is really looking good. Did you decide what type of flaps?

I got some inspiration for how it could work. Think I will go for double slotted but lets see. The other thing I am wondering about is how to fix engine nacelles to the wing and also what to do about a thrust tube. And then there is also the question of how to make the outer wings detachable, so that the whole thing still fits in a car. Well, one issue at a time.

 

[Burnhard]

Started cutting the wings yesterday. After the cutting I noticed that the topside and bottom had about the same size which means an elliptical airfoil. Problem is, that I need to do flat bottom which then meant that the top side was about 1 1/2 cm to short. Decided to fix that with adding a bit of foamboard instead of cutting a new wing. I need to do a fair bit of experimenting with the wing so may end up cutting a new one anyway. The wing itself is reasonably small with just below 1,4m wingspan. Will be interesting to see whether I can get everything fitted.