F-15 Eagle Park Jet

[jetset44]

Here’s the follow-on to my F/A-18 Hornet Park Jet (http://www.rcgroups.com/forums/showthread.php?t=271581). This model has similar dimensions and weights as the F-18 Park Jet and uses the same power setups and radio installation. It’s designed to be built entirely from either 6mm Depron or BlueCore foam.

The flight performance of this model is fantastic! It has a wide speed range and is happy doing either screaming fast low passes or very slow (~10 mph) high alpha slow passes. It has excellent handling characteristics and looks remarkably realistic in the air. For those that have flown the F-18 Park Jet, the F-15 handles just as well as the F-18 but is noticeably more stable—and thus easier to fly. However, it’s not quite as quick on the controls as the F-18. So if you’ve never flown a Depron jet pusher before, the F-15 Park Jet would be an excellent first jet! I’m hoping to get a flight video posted as soon as the weather cooperates.

Here are the specs:

Wing area: 257 sq in
Span: 27.9 in
Length: 42.3 in
Weight RTF: 15.7 oz as shown unpainted (estimate 16.5 oz painted)
Wing loading: 9.2 oz/ft2
Motor: Axi 2208/34
Battery: Etec 11.1V 1200 mAh Lipo
Prop: APC 9x6 SF
Current draw: 9.7 amps
Power loading: 100 watts/lb
Radio equipment: GWS R-6 receiver, GWS Pico and Hitec HS-55 servos, 10 amp ESC
Flight controls: Wing flaperons, full-flying horizontal stabilizer

Like the F-18, this model uses a flaperon/stabilator control system with 3 servos, which provides excellent control at both high speeds and low speeds. The best part of this control system is that it allows the use of flaps to not only improve takeoff and landing performance, but also improve maneuverability when mixed with the elevator to provide maneuvering flaps. This model can also be built with working rudders, but my flight testing so far has not indicated a strong need for them.

The design goals of this model were:

* True parkflyer: Able to comfortably fly in small fields, due to the light wing loading, high power loading, and excellent handling characteristics.

* Simple construction: The design features all flat sheet foam construction with minimal carving, which allows it to be built quickly. Balsa triangle stock is used at the corners to allow sanding the corners round, which greatly improves appearance.

* Capable of using inexpensive brushed motors: This model was designed to fly well with a stock GWS EPS-350C motor (5.33 gearing, 8x6 prop, 11.1V Lipo). Brushless motors will provide even better performance, but are not necessary for good performance. Ideally, any power system used in this model should provide 15-20 oz static thrust and 45-50 mph pitch speed. There are many motors available that will work well, including the Axi 2208/34 or 2212/26, geared Himaxx 2015 or 2025 series, geared Razor 350, or direct drive Mega 16/5/5.

Plans for this model are posted below. The only rule is if you build one from these plans, you gotta post a picture of the finished model here so we can all admire it! ;)

And for those of you that don’t have easy access to Depron or want to save time printing and tiling plans and cutting out parts, this design will soon be available as a laser-cut kit from www.3dfoamy.com (http://www.3dfoamy.com). Levi puts out excellent quality kits that will save you a lot of time relative to scratch building! He expects to have the F-15 kits available in about 3 weeks.

Steve

[jetset44]

Here are some more pics of the prototype. Note that I’ve decreased the width of the aft fuselage/inlets about 0.5” on the plans relative to this prototype model, since I thought the aft fuselage looked a little too wide. The last picture shows the flaperons and stabilators at maximum deflection.

[jetset44]

Here are a few more pics. The canopy is removable (via Velcro strips) to allow easy access to the battery compartment. The black wire is the receiver antenna and the foil-covered wires are the battery extensions. Because the battery leads are so long in this model, it’s a good idea to wrap them with aluminum foil to reduce interference with the receiver. This foil added a noticeable increase in range during ground range checks!

These pictures also show the large flow-through inlets on this model. These allow the entire fuselage to become a large lifting surface, which contributes greatly to the excellent slow speed performance of this model. This inlet design also allows the model to be easily converted to electric ducted fans as well (a future project for me, but I’m sure one of you will beat me to it!).

The last picture shows the internal structure of the fuselage. Very similar to the F-18 Park Jet except that I’ve added some more scale details to the inlets (an inboard inlet side with working boundary layer diverter).

[jetset44]

Here are the plans for the F-15 Park Jet. These plans consist of two files—a scaled assembly drawing that shows how everything fits together and a full-scale parts template. The parts template is posted in both tiled and non-tiled formats. Previews are posted below to show how the plans should look when assembled. Enjoy!

Steve

EDIT #1: Here's a link below to updated plans and construction guide for this model:

http://www.rcgroups.com/forums/showpost.php?p=4204873&postcount=1647

[Ben_E]

On behalf of everybody - Thank you Steve!!!!!!!!!!

You have made a dream come alive - my own F-15 :D :D And it looks soooo good. I bet thisone also will draw attention on may flying fields around the world!!

Ben_E

[Photon]

Steve,

Thank you very much for the plans. Sorry about the nagging :)
I was going over the parts templates and found a small problem with the inch scale. It seems there's a shift there.

[Hawker]

Thanks Steve!! Awesome. :D

[jetset44]

Steve,

Thank you very much for the plans. Sorry about the nagging :)
I was going over the parts templates and found a small problem with the inch scale. It seems there's a shift there.

Thanks for catching that problem, Photon! I just corrected the file and replaced it with a new version called Rev A. I had to squeeze things down a bit to get it to fit onto a single ANSI E sized sheet, and I didn't grab the whole scale when I was shifting things around... :o

Steve

[RoverTomcat]

Hi there Steve!

Brilliant!!!!! Thanks a lot - Now I have a plan what to do with the last two sheets of Depron... ;)

Best regards - Paco

[Hawker]

Steve,

Where can I order an Axi 2208/34 motor from? And what do you recommend for an ESC?

Thx

[jetset44]

Steve,

Where can I order an Axi 2208/34 motor from? And what do you recommend for an ESC?

Thx

I got mine from www.parkflyermotors.com, but Hobby Lobby and www.aeromicro.com also carry them. I'd recommend the Castle Creations Phoenix 10 ESC. If you get the Axi, also get one of the adapters that lets you mount the Axi to a GWS-style stick mount. Makes it really easy to swap motors around and test different combos.

I had this motor and ESC in my ShockFlyer up until now, and I never would have believed it could fly a 16 oz Depron jet with any authority until Sal C convinced me to try it. I was already a strong believer in Axi motors, but I'm even more of a believer now! I highly highly recommend them.

Steve

P.S. If you get one for an F-15 or F-18, I'd recommend getting the larger 2212/26 over the 2208/34. I'm really happy with my 2208, but I'm working that poor little motor really hard in the F-15. The 2212/26 can handle these power levels much easier.

[empeabee]

Thanks
Mike

[umrk]

Thanks again Steve!

What colors is this one going to wear?

mike

[Pinecone]

Steve,

Where can I order an Axi 2208/34 motor from? And what do you recommend for an ESC?

Thx

Aircraft-World (www.aircraft-world.com) has good prices on them. And I actually have gotten packages from them in Japan faster than some US companies.:)

[flanker]

Thanks a bunch Steve :)

[RCParkflyer]

THANK YOU Steve!!!!!!!!!!! This is going to be one sweet jet to build :)

Tom - Milwaukee (Who still wants the F-22)

[G1K@home]

Steve,
Great work


I'm going to blow this one up 200% also


Ryan

[T_MECO]

Cool plans Steve, I about to get some FFF fro Lowes to try these plans out with. do you think that a Axi 2212/34 would work in this plane? or is the /26 the way to go. I have a 2208/34 in my shockflyer that I can probably swap out but what the hell it's only money :D

[Thomas Nelson]

Very pretty bird Steve - and thanks for putting such serious effort into something you're willing to share. THIS is the kind of stuff that makes the internet & ezone in particular shine!

:)

Sincerely

Tom (gettin' tired of all the other stuff/spam that the wastes the potential of the internet) Nelson

[Bsouthwell]

Thanks Steve!! Looks like a late night tonight! Just in time for a club fly-in Saturday!

Bill

[Brati]

thanx steve for the plans.

after a long day of work ( beginns at 6am and ends up to 8pm ) i am nearly ready with cutting out the tiles. hopefully ready tomorrow afternoon. the main part should be ready tomorrow at the same time as now :)

drinking now a beer and a second for you !

good night ladies and gentleman. it's dark and fu**in cold here.....
:p

[jetset44]

Thanks again Steve!

What colors is this one going to wear?

mike

Well, actually I was thinking about the paint scheme below...

[jetset44]

OK, OK, I was just kidding! I don't have the time for paint schemes like that... :D I think I'm going to go with standard USAF grey paint scheme, since it's easy and is the most common scheme for F-15s. Here's the look I think I'll aim for.

[rcguy01]

Great jet.
will this F 15 kit be availble soon at this site?
http://www.3dfoamy.com

[Spinner]

Steve, you'll be elected to the Hall of Fame as soon as you retire--but don't!! :) You are outdoing yourself with every outing. Hope Levi can weather the coming storm of requests for kits, and with a baby on the way!

Nice pic of the 27th Fighter Squadron's F-15. I see them over head every day here flying out of Langley AFB. Hope you are your usual unbelievably nice self and provide a file for markings similar to what you did for the F-18.

Many, many thanks! :)
Joe

[kriptonic]

Wow that's a really nice plane,,, Also Nice Hard Wood Floors.......,,,,, When i finish my Harrier, i'll have to get one of those F-15's and F-18's,,, I'm wondering if you can make it EDF???? i'm sure ya can...

Gene

[Bill Bergman]

Steve...
WoW and double WoW!!!!
Thanks for the design.

[Ralph A. D'Amelio]

Steve was kind enough to allow me to beta test his F-15. Here is an un-edited video of its maiden. :D

http://rcgroups.com/gallery/showphoto.php?photo=10767&sort=1&cat=500&page=1

Its a great airplane. :) :)

Thanks Steve.

[Spinner]

Ralph,

Tell us about the drop tank!

Joe

[cyberfly]

Steve

You're the best of the best

;)

[Hawker]

Thanks for the motor help guys! Hopefully when I get home tonight my 24 sheets of white 6mm depron will be waiting for me. :D

[cyberbipe]

The Plans are awesome! Thank You for another great plane.I am flying my FFF Hornet on the stock GWS C drive. I hope the Eagle fly on that economy drive system as well as the Bug does. I will poast my findings soon!
Thank again Jetset44 your planes fly FANTASTIC!!!!
Michael

[Ralph A. D'Amelio]

Joe very observant :)

After clipping 2 fingers trying to launch the Ultrafly Hawk, and since you can't grasp the F-15 like the F-18 (much to wide) and the finger holes did not suit me, I came up with the drop tank idea.

Its carve out of piece of foam with a depron plyon epoxy into the tank and thru the bottom of fuse. The bottom of the fuse has a small doubler inside to give more glue surface and to take the landing stress. It works like a charm, looks cool :cool: and actually prevents the prop from digging into the ground, unlike the F-18 if the prop is vertical on touchdown and coming in a little fast it will dig in and do a cool 180 turn on its belly :D

Ralph

[Spinner]

Ralph,

You're a genius! Glad I asked. :) The f-15s around here fly with tanks on most of the time--looks great!

Joe

[jetset44]

Thanks for all the kind words, everyone! I'm happy to share with this great community.

OK, now who's gonna be the first one to post pictures of their completed F-15? The race is on! :D

Steve

[erunway]

THANK YOU - STEVE-

You have done it again....

Erico

[erunway]

;) THANK YOU - STEVE-

You have done it again.... :D :D :D

Erico

[RoverTomcat]

Hi all!

Thinking about some paint schemes out of the ordinary grey/grey for the F15, I've came across these...

The first piccies are the Japanese Agressor F15's and the second set shows the Israeli AF's blue / brown / green camo.

I think, I'll go with the IAF's scheme!

Best regards - Paco

[RoverTomcat]

That's the scheme I like very much....

[empeabee]

Tom - Milwaukee (Who still wants the F-22)
Me 2 :)
Mike

[empeabee]

OK, OK, I was just kidding! I don't have the time for paint schemes like that... :D I think I'm going to go with standard USAF grey paint scheme, since it's easy and is the most common scheme for F-15s. Here's the look I think I'll aim for.
Gawd - I hope you have good eyesight AND never a dull grey day
:eek:
Mike

[empeabee]

Wow that's a really nice plane,,, Also Nice Hard Wood Floors.......,,,,, When i finish my Harrier, i'll have to get one of those F-15's and F-18's,,, I'm wondering if you can make it EDF???? i'm sure ya can...

Gene
err a Real Harrier? - wheredjagetthat?
Mike ( trying to silence screems from wallet )

[Bill Bergman]

Which glue works best for laminating/sanding Depron foam?

[Brati]

hi

i finished the fuselage right now. hope the picture a added will be shown.

more to biuld next days. the weather is too windy for flying. maybe kiting later.

so... who will be the first of the none betatesters with a rtf f-15 ??

iam on the way.... :)



http://rcgroups.com/gallery/showphoto.php?photo=11094&sort=1&cat=500

[Brati]

hi bill

i allways use styro-CA glue with activator.

another good way is to use the white glue used for wood. it needs a bit more time but gives a strong connection.

you can allso use uhu-por. it needs 10 minutes per connection.

[DBa]

For all of u who want a F22 have a look here :

http://www.rcgroups.com/forums/showthread.php?t=279657

[Spadinator]

Awesome work on the F-15......I have been soaking my walmart foam board in the tub in preparation for the build!!!

this is my set up
Graupner Speed 400 4:1 gearbox 9X6 prop
3 cell li-ion 10 amp speed control
Weight of 16.5 oz
Moto calc assisted in this set up and it should fly great at my altitude of 4500 ft!!!!

[Bill Bergman]

Thanks Brati! which one is most sandable with foam?

[Sal C]

Thanks Brati! which one is most sandable with foam?

I use 3m77 spray...

[Sal C]

...OK, now who's gonna be the first one to post pictures of their completed F-15? The race is on! :D

Steve

Done! (what do I win?) hehe...

[Bill Bergman]

Nice job Sal !

I've used 3M77 before. It worked pretty good but was a little sticky when sanding.

[Brati]

hi

use white-wood glue for good results and a easy sanding. but i warned you... you must have a lot of time :)
also good is uhu-por.

@sal how do you mask the glue areas if you spray the 3m-77 ?
it needs a couple of minutes before you can paste the tiles together.

styro-ca is faster :)

btw. sal.... you a not member of the race.... :)

[jetset44]

Done! (what do I win?) hehe...

Awwww, c'mon Sal! You know beta testers don't count! :D :D :D

[Tomcat Fan]

What ESC and prop for a speed 400?
Can she fly on nimh? Ize just a po' little modeler...

[Spadinator]

On the set up I have the Nimh were a little heavy 9oz :eek: . Moto calc said it would fly but would require attention to keep it airborne. I am going to use a 9X6 prop and a 4:1 gear box. Direct drive will not develop enough oomph to fly the plane. The three cel Li-ion battery weighs only 114 grams so the weight saving will be worth it. I guess the proof will be when I actually fly the plane!!!

[MJH]

I fly my f-18 nimh. Been using 8xKAN 650 and 8xKAN950.
With this setup U has a problem: low voltage does not spin prop fast enough for GOOD performance.
I found a solution by stupidity(mine): I use GWS 350C with 1gear. Draws more amps than it should but gives adequate performance. 3hrs +flight time and has not burned the motor yet.. prop 8x6 GWS

[edkoz]

While I realize complaints belong in the Vendor Forum, I just wanted to post a link to save somebody else from a lot of aggravation.

http://www.rcgroups.com/forums/showthread.php?t=289868

Ed

[Zeroaltitude]

Ed, if you realise where the correct place to put this complaint is, then why do you post it not on ONE but TWO forums? Unless I´m mistaken, we are not allowed to "cross-post", so you´re not only breaking the rule that you were fully aware of, you´re also breaking another rule which you SHOULD have known about.

I don´t have the background info on this, so I can´t say for sure who is right or wrong. From what you´ve posted however, all I can deduce is that there were several delays. While it is fair to assume that a vendor would keep their own time-tables as not to cause problems for their customers, it is also fair to assume that MOST of the vendors we deal with in this hobby are rather small businesses, and are therefore extremely voulnerable to delays. It´s not like they can just hire someone off the streets if something (life in general) makes them unable to deliver according to plan. Do you think this particular vendor had something to GAIN from not delivering to you?

Anders O

[umrk]

Thanks for the public service announcement Ed.

Levi has his hands full, lots of orders, a wife about to give birth... and 3Dfoamy is a one man operation. He's probably on edge right now and trying to take care of the family as best he can while filling and shipping many orders. Please place yourselves in his positition before posting.

Please cut Levi some slack, be pacient... and accept that orders at this time are a bit slower to be cut and shipped than usual, to avoid the aggravation.

Thanks
mike

[Wayno-san]

Sal,
You apparently need a handicap. Send me your finished F15 and start over. We'll let the next one count OK? :)

-Wayno-san

[pacro]

hey levi can your jets be converted to EDF i plan to enlarge the plans to fit 2 GWS EDF-55 units w/370 motors would this work, or what would you suggest for brushed setup

[Sal C]

Sal,
You apparently need a handicap. Send me your finished F15 and start over. We'll let the next one count OK? :)

-Wayno-san

I can't start a new F-15, working on a secret new jet for Steve... :eek:

[empeabee]

I can't start a new F-15, working on a secret new jet for Steve... :eek:

You skunk you.
Blackbird or woblingoblin ?? ;) :D

Mike

[RCParkflyer]

T-38 I bet

[Sal C]

It's not that secret... geez you guys...

[jetset44]

hey levi can your jets be converted to EDF i plan to enlarge the plans to fit 2 GWS EDF-55 units w/370 motors would this work, or what would you suggest for brushed setup

Yes, both the F-15 and F-18 Park Jets can be converted to twin EDF-55s pretty easily and with minimal modifications. The designs don't need to be enlarged at all. I've attached a picture below of both jets with twin EDF-55 installations to show what it would look like.

Two stock EDF-55s would put out 10-12 oz thrust and the AUW would be in the neighborhood of 18-20 oz, so the model wouldn't be a screamer on these fan units but would be a decent sport model. Upgrading to brushless motors would provide better performance.

Steve

[roccobro]

F-22!!

Justin

[jetset44]

It's not that secret... geez you guys...

Yeah, it's not that secret! Sal's doing a beta build of the F-18 Pocket Jet, a scaled down version intended for CD-ROM motors. Feel free to post pics if you like, Sal, though the F-18 thread would probably be a better place...

Steve

[Brati]

hello

it's done

http://www.mbrak.net/bilderallg/f15-800.jpg

allmost ready for maiden. some little detail have to be done.

so.... i thing i'am the first of the none-beta's :)

whats the price steve ?

auw 550 gr.
hacker b20-15l 4:1 8x6 apc sf
polyquest 2200 3s1p

:)


so long

[jetset44]

Looks great, Brati!

And the prize you win is.............BRAGGING RIGHTS!!! Well done! :D

Steve

[jetset44]

By the way, Brati, could you post a picture of the airplane from the bottom? You're the first to build with the new narrower aft fuselage and I'm curious to see how much better it looks.

[Brati]

hi

i will upload some more detailed picture to my web-server.

the link is : Gallery (http://www.mbrak.net/gallery)

then navigate to the f-15 section.

more pictures will follow.

have a nice day.

[umrk]

Yes, both the F-15 and F-18 Park Jets can be converted to twin EDF-55s pretty easily and with minimal modifications. The designs don't need to be enlarged at all. I've attached a picture below of both jets with twin EDF-55 installations to show what it would look like.

Two stock EDF-55s would put out 10-12 oz thrust and the AUW would be in the neighborhood of 18-20 oz, so the model wouldn't be a screamer on these fan units but would be a decent sport model. Upgrading to brushless motors would provide better performance.

Steve

So put a couple of these EDF Combos in there and Up That Thrust! ;)
http://www.e-flightline.com/ducted_fans.htm

mike

[Synwpn]

i can safely say that with the brushless combo's they can make it scoot! i just put two into a gws B2 just because. heh.

[empeabee]

So put a couple of these EDF Combos in there and Up That Thrust! ;)
http://www.e-flightline.com/ducted_fans.htm

mike

get thee behind me satan :D :cool:

Mike

[roccobro]

i can safely say that with the brushless combo's they can make it scoot! i just put two into a gws B2 just because. heh.


Sorry OT:
Videos please! I have hung up my B-2 until I could wind some CD motors for it. The best I got it to fly was at 12 amps on some 2s 1100 iRates. Killed a fan unit on final impact and lost interest until I knew I had more power. Weight loss was the key to good flights and I didn't wan't to strap in some similar weighted Himax's (3600's)
Thanks!

Justin

[empeabee]

hi

i will upload some more detailed picture to my web-server.

the link is : Gallery (http://www.mbrak.net/gallery)

then navigate to the f-15 section.

more pictures will follow.

have a nice day.
Nice shots, looks great.
Mike

[jetset44]

I got some good video today of my F-15 at the local schoolfield, and edited it into the two video files below. The first file is 3 minutes long and 12.8 MB, and shows high speed and low speed flight, aerobatics, and some pretty good high angle of attack flight. The second file is 1.5 minutes and 5.4 MB, and shows some really close-in low level flying to highlight how small an area this model can be flown in. The second video also shows a really good high angle of attack landing.

These two flights were the 2nd and 3rd flights of this model, which really say a lot about how well this model flies! Also note I'm flying in a small school soccer field surrounded by houses here, so I couldn't open the throttle up and do any really high speed stuff...

F-15 Video 1 (http://jetset44.rchomepage.com/F-15_Video_1.wmv)

F-15 Video 2 (http://jetset44.rchomepage.com/F-15_Video_2.wmv)

Steve

[Hawker]

Great video's Steve! Thanks for posting them. Wow that is so cool. It
really makes me want to build one BAD! I have all my depron now so must
start building. I have the next 3 days off so we'll see what I can get done.
Your F-15 fly's so great and in such a small area. Love the high alpha shots
too. This is a must build!! :D

[rpage]

wow nice F-15!!! man those landings could not get any softer!

[umrk]

Very nice Steve, very nice!
The pilots no slouch either.

mike

[Spinner]

Steve--WOW! Beautiful. :) The true definition of "Park Flyer." What a show!

Congrats--again! :)

Joe

[GenesisCreation]

That is outstanding Jetset44! Great thrust and very stable. I hope you build an F/A-22 next. Honestly, I would like to see a YF-23 next but from following the many attempts on this forum it appears the YF-23 would not be a easy prey.

[Brati]

hi

just updated the pictures on my web-server Gallery (http://www.mbrak.net/gallery) . there are more detailed pictures now.

steve ore sal : will the pocket jet build from 3mm depron or what ? which wingspan will it have ?

[RCParkflyer]

Just watched the video's, EXCELENT flying and OUTSTANDING Camera work!!!!!!!!!!

I can only hope mine fly's half as good :)

[Ralph A. D'Amelio]

Classic fall day here in NE, 50 degrees, grey overchast skies with 15-25 mph. winds. Guess what, the F-15 handles it great with an axi 2212/20 and 3s tp2100.

You just got to see the screaming downwind dives to 5' off the deck and see that Eagle fly past you. Hee Ha......... :D :D

Ralph

[Spinner]

Hey Steve,

I'm squinting trying to see how (if?) you used flaps in your F-15 video?? ;)

Thanks,
Joe

[cyberfly]

Hi Steve,

very nice fly, looks like your F-15 fly better than F-18, may be your F-22 fly even better

:)

[jetset44]

Thanks for the compliments on the videos. It's fun putting those together! :D

Spinner - Yes, I use the same flap settings on the F-15 as the F-18 (notice on the plans that I modified the F-15 wing planform to provide full-span flaperons). However, in these videos I didn't change the flap settings--I just set the flaps at 10 degrees and left them there since I was flying in a small field. But I also have elevator-flap mixing enabled, so every time I pull back on the stick to do a loop or flare for landing the flaps automatically drop another 10-15 degrees. I'm finding this is the easiest way to deal with the flaps--just set 10 deg for small fields, 0 deg for large fields, and let the mixing handling the rest.

One of the problems I've had with the flaps is that I haven't yet found a good way to program the flaps onto the 3-position switch on my Futaba 9C transmitter. Thus, I'm using the default rotary switch above the power switch, which requires me to look down at the transmitter and take my hand off the left stick to adjust. And when you're flying in a small field you don't want to take your eyes off the airplane and your hands off the stick for long! :eek: Also, since the rotary knob doesn't have stops I never know exactly what flaps I just dialed in... A bad situation all around. Ideally I'd like to set up the transmitter so that the 3-position switch commands 0, 10, and 30 degrees flaps. While it's easy to assign flaps to that switch, I've been unable to figure out how to get it to do the 0, 10, 30 settings, only full up, neutral, and full down. Are there any 9C owners out there that know how to do this?

Steve

[Thomas Nelson]

That's first class stuff, Steve. Excellent!

[jetset44]

hi

just updated the pictures on my web-server Gallery (http://www.mbrak.net/gallery) . there are more detailed pictures now.

steve ore sal : will the pocket jet build from 3mm depron or what ? which wingspan will it have ?

FANTASTIC work on your F-15, Brati! Thanks for the great pictures. I'm jealous, though--your F-15 looks much better than mine with that narrower aft fuselage. My bird looks way too fat in the back end....oh well, that's why it's called a prototype. Your pictures confirmed to me that narrowing the aft fuselage was the right thing to do! :D

I also really like your idea to use simple strips of foam in place of the balsa triangle on the fuselage. I'm sure that's quite a bit lighter and also allows rounding the corners even more. If you don't mind, I think I might borrow that idea on my future designs!

The Pocket F-18 uses all 6mm Depron, not 3mm Depron. I estimated that by the time you added extra carbon stiffeners to the 3mm Depron it didn't save much weight relative to 6mm. And that model has 22" span.

Steve

[jetset44]

That's first class stuff, Steve. Excellent!

Thanks, Tom! You know, the whole time I was flying the high alpha segments in that video I was thinking of your awesome Su-27 high alpha video and trying to emulate that performance! As you can see, my model didn't quite get up to the same high alpha you were able to get... :(

[Sal C]

Ralph, put the plane away and get ready for game 2... ;)...

[empeabee]

Also, since the rotary knob doesn't have stops I never know exactly what flaps I just dialed in... A bad situation all around.
Steve

I've read somewhere that people clamp a simple lever to the rotary knob so that they can feel/see where it is - ISTR it was about 1/2 inch long, & clamped with a simple knut & bolt to make it easy to remove.

p.s. Looks very good in the air - all it needs is some live weapons & everyone will be running for cover in the park :D

must see how my 11/12th version flies when depron gets here.

Mike

[Ralph A. D'Amelio]

SaL AS OF 11:00PM 8 th inning ........ITS ......6 TO 1 Red Sox :D :D :D :D :D :D :D :D :D :D

[roccobro]

Holy moly, and here I am in my undies on the internet reading about RC planes....

[umrk]

Thanks for the visual. :rolleyes: :rolleyes: :rolleyes: :D

mike

[jetset44]

For those of you building this bird, here's an explanation of the engine fairings shown on the plans. These are just small sheets of foam that are sanded to a feathered edge and glued to the top of the aft fuselage to simulate the large engine fairings of the F-15. I've attached a closeup of a finished fairing below, as well as overall views with and without these fairings. While I like the look these fairings add, I decided NOT to put them on my model since they add .3 oz of weight to the back end of a model that is already inherently tail heavy! I was able to balance my F-15 without ballast, but I've got a lightweight Axi 2208 in the back. With a larger motor, you would need a larger battery pack and/or ballast to balance it. Thus, my recommendation is to finish this model first and see how well it balances, and if you can stand the weight in the back end, then consider adding these fairings.

I've also added a pic of my F-15 as it looks now. Just sprayed the final coats of grey paint, and starting to make the decals next.

Steve

[RCParkflyer]

just don't look the same without the bumps :)

[jetset44]

just don't look the same without the bumps :)

Yeah, I know. But the good thing is I can always add them later! :D