3.75oz (106g) Shockflyer sized plane

[fwilly]

I finished this plane at the Plainview indoor funfly Saturday. AUW is 3.75. Its got about as much wing area as a first generation shocky and more fuse area than a Yak.

Its got a 12g cdrom, a 2 cell etec 300, a Phoenix 10, a Berg 4L and three 6g blue bird servos. All servo wires were replaced with magnet wire, and the connectors were removed.

Its got pull pull everything and kevlar thread bracing. I went with a differnt kind of pull pull on the ailerons than what has been posted here. Not sure if its been done before, but its pretty simple, and only requires one pulley.

Its not really an F3P design, but its the same size, and has the same power set up that I plan to use on my F3P design. It also uses the same style of construction that I plan to use.

I call it the Tension Freestyle

[Malves]

Very nice, bro.:) I like the aileron setup idea. It looks more simple than what ppl are using.

[Jerry Combs]

Very ingenious aileron setup! I like it.

Jerry

[racerxky]

Yes I like that aileron setup, very ingenious.

What are you using for control horns?

[Bsouthwell]

Looks great! I am going to give the magnet wire a try when I get a chance. What soldering equipment did you use. Is the 12g motor your build? I got a 20mm motor down to 18g. 12g is quite a bit lighter! I guess I need to order some lighter drilled out cans and CF bearing tubes:D Any tips on gettting the motor so light?

Again.....outstanding work!

Bill

[Aio_1]

Yes nice system for the ailerons. The other system applies less torsion to the ailerons due to being further outboard which is an advantage but aside from that I yours looks good.

Why is your kevlar thread black? Did you colour it?

[fwilly]

Thanks guys

The horns are cut from thin carbon sheet.

I use a regular RS soldering iron.

The motor isn't a GB. Its from a dead drive. I'm not sure which one, but I'll try to post a pic of the bell, which is pretty easy to spot. If you want to use a GB 20mm, they can be built as light as 16g with a carbon output shaft and bearing tube, or even lighter if you want to remove some laminations.

I've thought about the torsion, and I was thinking that some more kevlar going from the control horns to the tip of the ailerons would stiffen it up. Its so slow and light, that I don't think its really a problem. I may set up my little wireless camera and point it towards the ailerons to see if they twist at full throttle full deflection.

The thread comes that color from www.deeteeenterprises.com

[Aio_1]

I've thought about the torsion, and I was thinking that some more kevlar going from the control horns to the tip of the ailerons would stiffen it up. Its so slow and light, that I don't think its really a problem. I may set up my little wireless camera and point it towards the ailerons to see if they twist at full throttle full deflection...
It's probably fine as it is. Actually on second thoughts the inboard portions of the ailerons are in the accelerated and turbulent propwash which probably put's much more demand on the surfaces than the freestream airflow on such slow planes. So maybe there's an argument for the horn to be relatively close in.

Aidan

[matchlessaero]

Typical wonderful Fwilly workmanship... I bet you were rockin out to Celldweller while buildin that thing too weren't ya :D

Send me a PM sometime.....

[fwilly]

Mostly Spineshank, Kidneythieves, Luxt, Clutch and Rammstein, plus a little of whatever the local rock station was playing (PU takes a long time to dry:D).

[MicroHeli-Nut]

I'm asking from the outdoor section... the thread setup for the ailerons is NEAT... can i use it for outdoor planes off 30" and smaller?

[Aio_1]

I don't see any reason why you couldn't use it on larger or heavier planes but it's real advantage is the low weight and high precision while allowing large deflections. I don't think I'd bother with it on a plane much heavier than 200g. Standard setups are simpler to install and perfectly adequate for most planes.

Aidan

[fwilly]

Yup, what Aidan said.

I'm sure it would work well on larger planes, but it may be more trouble than its worth.

If you just want to try it for fun, I don't see any reason not to.

[StrangeGager]

Did you use magnet wire for your antenna also?
If so, how did you tune it?

[fwilly]

Yes, its 30awg magnet wire too. I cut a piece half as long as the stock antenna. Wouldn't even know where to begin with tuning it, but I have read that 1/2 the original length is a safe bet, and I get good range with it (probably way more than I'll ever use)

[larrypaul]

:) Can you explain further how you wired your servos to the rx, did you solder directly to the pins or use existing servo plugs :p

[Trisquire]

I think fwilly desoldered the pins from the receiver's circuit board. Then he soldered on the magnet wire directly.

Tom

[larrypaul]

Thanks a lot Trisquire, a very good idea on lightning equipment

larrypaul

[Trisquire]

Don't take my word for it yet. Let's see what Mike says. By the way, welcome to RCGroups.

Tom

[fwilly]

yup, the pins and connectors are dead weight as far as I'm concerned :D

Here's a pic of a Berg 4L all wired up in another plane.

[KNUFFAN]

Hey FWilly

I just finished one of the foamy Brios that was posted in the 3D thread. I built it at 90% of scale and it comes out first generatiion shocky size. Put that little German motor on it and I am using all your lightening tips. BTW I have a couple of the Johanssen Elite V2's flying at 4.5 oz and have found that the best "tip" on these slow light planes is to run a bunch of differential. At full throw (70 degrees) the "up" aileron is 3/8 of an inch greater than the other. Rolls like a pencil. Also, it changed the perceived rudder coupling. I thought before that the rudder was making the rolling circles weird but it was the poorly set up differential.

Light is Right
G

[byoung]

KNUFFAN,
What batteries and prop are you using with the "little German motor"?

Brad

[KNUFFAN]

Hey!

I'm using the 7 inch GWS and the 2 cell 480 pack from Thunderpower. I bought one of the carbon props from Homefly.com like Martin uses but I need a new shaft that is longer to go into the back of that prop (it has a setscrew) I will probably only use it indoor. It is about an 8x4 and only weighs about 2.5 grams. Ver cool

Guy

[sloper steve]

Alright nice to see the rx pins removed and the mag wire soldered in!! nice!
Under 4oz plane without actuators and expensive ESC/rx nice!

More info on the 12 gram motor?
It fits a nice gap vs 25g 5A draw motor or DWE 5g 2oz thrust motor

[KNUFFAN]

Its the MicroRex from Mamo Models. If you meant the other 12 gram that FWilly has, it is a 20mm cdrom with a Carbon Fiber tube for the mount and a very light prop mount (Glue I think) :)

[fwilly]

Its the MicroRex from Mamo Models. If you meant the other 12 gram that FWilly has, it is a 20mm cdrom with a Carbon Fiber tube for the mount and a very light prop mount (Glue I think) :)

Yup, thats about right. It also has a carbon output shaft.