F-15 Eagle Park Jet

[wing_man]

Delta...you'll love how this flies. Sooooo Smooth. I have a second one cut out. Yours is a beauty! Have fun. By the way...where did you get that canopy?

Remember...DON"T Launch at or near FULL Throttle, I learned the hard way.

Later,

Dennis

[DeltaDart]

Thanks Wing man, I'm really looking forward to flying it.

The canopy is from 3DFoamy. Took a lot of modification to get to look halfway right on the plane. When I bought it I honestly thought I was buying something that was made for the plane and would save me some build time. Boy was I wrong. I have more time into the canopy than the airframe.

Roger that on the launch! I hoping not to learn anything the hardway if I can help it. (I know that's wishful thinking...LOL) Forgot to mention, I've also added the little centerline launch pylon to assist me as my hand just isn't quite wide enough to grip the fuselage comfortably.

Rod

[heiert]

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!!!!

Hi,

Just wondering if you have built the F-15 with the Sturdy board from Wal-Mart and how it worked out. I have a stock pile of the stuff and would like to try building the F-15 out of it.

Thanks for you time.

[derailed]

i'm working on an F-18 and a 3D plane from 3Dfoamy plans
it's not finished yet cause i'm hung up on the carbon fibre
not the easiest to get here
neither is getting the foam
i'm also trying to build an SR-71 from this same foam
so far so good but that walmart foam sure likes to curl

[Pyrock]

My foam should be here today. I've got the templates cut out so as soon as the foam arrives, I'm off and running. What do you guys think about this setup?:

Himax 2025-5300 (1:4.43)
E-Flight 8x6 prop
TP 3S 2100
CC-25 ESC
GWS Pico servos(x2)
HS55(x1)

My calculator says:
Static thrust= 35 oz.
In-flight thrust= 18.1 oz.
Amp draw= 16.66 amps
Flight time @ full throttle= 7.34 min.

I used an APC prop in the calc since it doesn't have an E-Flight. This is the calculator I used: http://brantuas.com/ezcalc/dma1.asp

[sanitpr]

Please send plan for F15 to me. I want creating model F15 and how to with make F15
Please send to e-mail: sanitpr@hotmail.com

[Kwok_Yu]

Please send plan for F15 to me. I want creating model F15 and how to with make F15
Please send to e-mail: sanitpr@hotmail.com
Plans are posted at the beginning:
http://www.rcgroups.com/forums/showpost.php?p=2788999&postcount=4

F15 Build Manual:
http://www.rcgroups.com/forums/showpost.php?p=2833620&postcount=151

Jetset44 F-15 Thread Guide:
http://www.rcgroups.com/forums/showthread.php?t=337604

[im-sad]

Steve
a bit off topic but do you know what hapend to chris(stratotanker)????

[Trbdsl96]

I just built a 30in ws F-15 from these plans. It flies very well, a tad slower than I expected but a very good flier no less. I was wondering, has anyone been able to use landing gear successfully with this plane? I saw Sparks's landing gear, is it still holding up? As slow as it flies with the flaps down touch and goes should be a breeze!

[DCobra]

Hi heiert,

I built my F-15 with Wal Mart sturdyboard and have had no problems even with the extra weight of added modifications for scale appearance. Basically I built mine to Steve's plans and added some additional bulges around the intakes and in the area where the wing LE joins the fuselage. My power system has been GWS 350C with C gearing and 9x7 GWS prop with CC Pixie 20p and Apogee 3s 1570mah lipos. No vertical but it hand launches great, and climbs well enough. I say if you have some sturdyboard, go for it, you won't be disappointed :)

As for sturdyboard curling...it's only done that to me when the paper wasn't fully removed. Thats the only drawback I've seen is paper removal is a pain.

Paul


Hi,

Just wondering if you have built the F-15 with the Sturdy board from Wal-Mart and how it worked out. I have a stock pile of the stuff and would like to try building the F-15 out of it.

Thanks for you time.

[kscbob1]

Hi heiert,

As for sturdyboard curling...it's only done that to me when the paper wasn't fully removed. Thats the only drawback I've seen is paper removal is a pain.

Paul

I agree the paper removal is a real PIA. On my planes I use 6mm Depron for the wings, stabilators, and vertical stabilizers. The rest of the plane is built using the 5mm sturdyboard. Reciently I scored some 5mm Xacto board from my local Michaels art supply store for $0.67 a sheet so with ten of these sheets and 2 30x40 6mm Depron sheets, I've got more than enough for the F-15, JAS-39 and F-14.

Bob

[wing_man]

Here is a pic of my 2nd F15...first one torqued in...remember don't launch at full throttle...

I'm going to try to paint this one a little nicer...


It is a F15E...in case you're wondering about 2 guys upfront.

Later,

Dennis

[DCobra]

Good luck with the second F-15 maiden Dennis! I've found that if I'm tossing into a slight breeze, only half throttle is needed, this is with a GWS 350C/ C gears/ and 9x7 GWS prop at about 17-18 oz. If there is no breeze, maybe go slightly higher than half throttle. Also, make sure you have a slight bit of up elevator trimmed in, it seems to help mine get on step quicker. Maybe about 3 or 4 clicks of trim.

Paul

[wing_man]

DCobra,

I did have some good flights on the first one...week two I was just excited to fly it again and oops....

I hope to be ready by Sunday.

Sweet flying plane she was.

Dialed in a couple of clicks of right also.

Later,

Dennis

[DCobra]

wing_man,

I know what you mean... I sent both my F-18's into the ground with hand launches on the same afternoon 5 minutes apart. Was so disgusted I scrapped both of them and started the F-15 and Stratotanker's X-29.
The F-15 just got it's first major repairs yesterday and today, I got a bit careless last weekend and pulled some high-G stupidity 15 feet off the ground and lost orientation...bam right on the nose full blast. Been flying it for about 4 months without anything more than a broken stab tip... it was heartbreaking to say the least. Still a bit heartbreaking to look at the nose with veins of Probond and a semi-scrunched nose tip. I opted to repair instead of building a pristine new nose. Oh yeah, I did have a battery ejection two weeks ago but the plane is so stable I was able to land her no problem with the battery hanging out of the cockpit connected by the Deans connector.
This F-15 so far has been the most pleasurable plane I've owned yet, and has taken my skills up more than any other plane I've had.

Good luck again with your F-15E model!
Paul

[Astrix]

Well I've read the first 19 page of this, thinking to myself "when wil this thread end!?" So I clicked last page, and I got here, page 88, lucky I didn't read the whole thing, also noticed that threads guide :) I'd be REALLY interested in converting this to an EDF-55. I didn't see anything about that on the thread guide, so may I ask, has anyone done this yet? Does it work? Thanks!

[Niggo]

I'd be REALLY interested in converting this to an EDF-55. I didn't see anything about that on the thread guide, so may I ask, has anyone done this yet? Does it work? Thanks!

well, me too ! :D Just now I am thinking of it: for sure edf-55 is cheap and small, but the increase of weight from just adding one EDF (the other weights as much as the motor in current configuration) and the need to be 21 oz of thrust push me to a different EDF solution or an edf-55 with brushless for at least 10-11 oz each of thrust. Is it possible? Steve, can you measure the diameter of the exhaust of the F14? Thanks!! :D

[Astrix]

I was thinking about the EDF-55 because Steve said so previously, and also they're cheaper and I don't need blistering speeds. As long as it can fly and perhaps do one single roll from level flight is good enough for me. No need for unlimited vertical :)

[Mike77]

EDF 55 with BL? What about a GWS EDF64 with a CD ROM BL? Look IGO thread in the foamies section....

[Niggo]

yes, it is a possibility but personally I don't have so much good result in homemade Cd-rom BL and you must make 2 identic one! Too much for me! :D

[Astrix]

An EDF64 would require modification to the shape of the plane if you get the kit though wouldn't it?

[DCobra]

I have a question for all the fellow F-15 fliers out there... do any of you have problems getting your F-15 to complete an inside loop or to fly inverted?

I've been trying to get an inside loop out of mine for a while, and have succeeded once or twice in 4 months of flying it.

Yesterday, it did the coolest thing I ever saw at the top of the loop it stopped looping right where it normally stops on me, then did a complete 360 plus another 180 degrees roll to come back to level flight. Wasn't intended, but man am I wishing I had a video camera so I could tell some "meant to do that" lies!

For some reason, at the top of a loop, it wants to roll from invert back to level flight. I'm thinking it's a CG problem, and all I can think of is the F-15 being high wing and that I fly it a bit nose heavy.

Does anyone have a technical explanation? Steve?

Paul

[JDJ624]

could someone tell me please what the proper GC is for this plane measured from the bottom edge of the inlets want to maiden my plane today i will try to post some pics of it
thanks jeff :)

[DCobra]

I dont have the measurements in front of me, but if you look on the assembly drawing, the CG location is marked. Look for the round symbol that looks like the BMW logo, it should be approximately 4 inches in back of the cockpit on the plans. If in doubt on this plane, lean towards being slightly nose heavy and adjust it back from there to your liking.

Good luck!
Paul

[jetset44]

could someone tell me please what the proper GC is for this plane measured from the bottom edge of the inlets want to maiden my plane today i will try to post some pics of it
thanks jeff :)

Hi Jeff,
The CG is marked on the assembly drawing, but here's a close-up view. It's always best to measure the CG from a point on the wing since that is more accurate. If the wing gets shifted on the fuselage slightly during construction, measuring from a point on the fuselage would not be as accurate. That's why I picked the point shown--it's the easiest point on the wing to measure from.

Steve

[jetset44]

There's only been one F-15 EDF conversion I've seen so far that was successful. It was the twin Microfan version built by FL62 a few pages back. Just click a few pages back to find it--he posted several pictures.

Stock GWS units will NOT provide acceptable performance in this model. Too much weight with too little thrust. It takes a brushless unit with well-designed inlet and exhaust ducting to work well.

Steve

[jetset44]

Steve, can you measure the diameter of the exhaust of the F14? Thanks!! :D

I just did, and posted the results in the F-14 thread. Here's a link:

http://www.rcgroups.com/forums/showpost.php?p=3817570&postcount=154

Steve

[wing_man]

Just in time for Memorial Day!!

F-15E Strike Eagle...

I wish I would have put in a tank drop...ERRR. I guess I'll add it later.

Hopefully flying a mission or two tomorrow.

Later

Dennis

[SuperHornet]

I'm am trying to get the cg correct for the F-15 I just built.
By putting my battery under the nose it is way nose heavy, after moving the battery more to the centre & end of the canopy it is still a touch nose heavy.

I have measured the cg correctly as per plan!
Does this sound right? should i add more weight to the tail end.

My setup is:

2000 mha Lipo (160g)
32kv Brushless (42g)
25A ESC (22g)
JR micro servos x3 (9g)
JR610 micro reciever (9g)

[jetset44]

I'm am trying to get the cg correct for the F-15 I just built.
By putting my battery under the nose it is way nose heavy, after moving the battery more to the centre & end of the canopy it is still a touch nose heavy.

I have measured the cg correctly as per plan!
Does this sound right? should i add more weight to the tail end.

My setup is:

2000 mha Lipo (160g)
32kv Brushless (42g)
25A ESC (22g)
JR micro servos x3 (9g)
JR610 micro reciever (9g)

Well, this is VERY unusual, but after seeing your specs it's not a surprise at all. You're using a very heavy battery and a very light motor! You've got a 160g battery and a 42g motor, compared to an 85g battery and 62g motor on my F-15. And my F-15 balanced perfectly with the battery all the way forward and no ballast. Obviously, the MUCH preferred solution is not to add more weight to the tail end, but to use a smaller battery! I like the Thunder Power 1320 mAh packs, which only weigh 85g and can pump out 15 amps. Highly recommended.

Steve

[SuperHornet]

Thanks Steve,

Which voltage should i go for 7.4 or 11.1v?

[LiftVsGravity]

Thanks Steve,

Which voltage should i go for 7.4 or 11.1v?


11.1v with out a doubt. :D I am only going to buy 3s batteries from now on. The TP 1320 3s batteries have me hooked. I don't think too many people have had success with the 7.4v in Steve's jets.

My F18 setup is:
AXI 2212/26
CC25
TP 1320 3s
10x3.8 APC SF

My cheap scales says that is 28oz to thrust at 12.5 amps.

[Spencer J]

1333 posts? isn't that a little much?

[RCParkflyer]

Yeah this should be on part 3 by now LOL

[discreetfire]

What radio are you flying your jets with?

Rob

[jetset44]

SuperHornet - I'll second LVGs comment--11.1V is the only way to go!

discreetfire - I use a Futaba 9C transmitter, Berg 5 or Hitec Electron 6 receivers, and GWS Pico or Hitec HS-55 servos for all of my park jets.

Steve

[jetset44]

11.1v with out a doubt. :D I am only going to buy 3s batteries from now on. The TP 1320 3s batteries have me hooked. I don't think too many people have had success with the 7.4v in Steve's jets.

My F18 setup is:
AXI 2212/26
CC25
TP 1320 3s
10x3.8 APC SF

My cheap scales says that is 28oz to thrust at 12.5 amps.

LVG - That 10x3.8 prop is pretty low-pitched for a park jet. It provides lots of static thrust but a low top speed (less than 30 mph). If you haven't already, you may want to try a 9x6 prop which I think provides a better combination of thrust and speed on that motor. But of course if you like how it flies with that prop, just ignore this message... :D

Steve

[LiftVsGravity]

You are right. I didn't (and still don't) have any other prop to put on it. I didn't have any high speed experience so having the thrust at a slower speed seemed like a good step to a higher pitched prop (and a faster park jet). I have a GWS 11x7 HD that I was thinking about trying (it would be tight, but would fit). If that doesn't work then I'll have to get off my can and order one.

One cool thing about the large amount of thrust is the very small (flip like) loops.

Curtis

[SuperHornet]

I havent flown my F-15 yet, but how do you think it will got with a APC 7x5e prop.
Im hoping to get it up this weekend.

[pacro]

I have been flying a prop version of this Lovely F-15 ( she turns heads like crazy at the field) but i want to try an edf version. I have built a new one with a deeppened rear fuse/engine area that can take a up to 75mm fan. any recomondations for power system

[SuperHornet]

I have just finished setting up the F-15,
I have a silly question, I havent flown with flaps before only ailerons + elevator.

I have set them up on a channel 6 which is on a switch (10 deg on / 0 deg off) and the ailerons work as normal, my question is if the flaps are on (both sides down) Will it affect my turning while the plane is in the air?

Will i need to set the flap to elevator mixing? to give it more elevator to keep it level?

SuperHornet.

[nopistons96]

im sure its in here somewhere but there are 90 pages to look through...! does anyone know about what scale the f-15 is. im making up my decal sheet and would like to be as close to scale as possible on the size of them. thanks for any help.
mike

[jetset44]

SuperHornet - With the flaps down you'll find that model can turn noticeably tighter, since the flaps increase the maximum lift of the wing. 10 degrees is a good amount to program in, but you'll probably find that the model wants to pitch down when you lower the flaps. If it does, you'll need to program the flap-elevator mixing so that it provides just a little bit of up elevator when the flaps are lowered. This varies a lot from model to model, though, so you'll need to experiment and find what works. You might even get lucky and find there is no pitch change with flaps.

nopiston - The approximate scale of the F-15 park jet is 1/18 scale. The full scale F-15 has a span of 42.8 ft and the model is 28".

[PREACHHAMES]

WILL A NIPPY BLACK 1208-180 MOTOR WITH JETI 12 PLUS ESC WORK ON THIS F-15? Specs say to use 6-8 cells and a Jeti 12 Amp controller and APC props from 7x4 to 9x4.5.

[SuperHornet]

Here are my pics of my F-15, unpainted.

[pacro]

where do you get the black depron

[SuperHornet]

Its grey depron and i got it from Australia for $8 a sheet 80x60cm.
http://www.depron-australia.com

[Sal C]

Here's a sneak preview of my current project, a nano edf F-15. While waiting for my 6mm Depron order for the famed jetset44 F-14 I was bored and needed something to build. My pusher Micro F-15 came in at just under 5 ozs so I figured a EDF40 might be a decent power plant (we'll see). I had to add some height to the fuse to fit the fan (~1/4") but can't tell that much.

Anyway I do have a question for the edf gurus (maybe I should have posted in edf but let's see what happens). If I put the horizontal stab carbon rod through the exhaust duct will it affect thrust that much? I'm going to use 3mm cf rod so it won't be that big. What do you think? Thanks.

Pic of the pusher F-15 and pics of the in progress nano F-15.

[jetset44]

Wow, that looks fantastic, Sal! (Pardon the pun... ;) ) I can't wait to hear a flight report on that little bugger. I've been avoiding any EDF projects because they're so much work, but if that ship flies well I just might be enticed to give it a try! The F-15 was certainly the best park jet design to use for this, since it has the largest inlets. Do let us know how it goes!

Based on what I've been seeing, the EDF gurus say that the drag/thrust penalty of the horizontal stab rod is noticeable but not significant. So as long as you've got a little extra thrust than bare minimum, you should be fine. Otherwise, search back a few posts in the F-14 thread for some really good ideas from Thomas Nelson and bipeflyer on how they've designed other horizontal tail solutions on their EDF jets.

Steve

[Sal C]

Thanks Steve I'll look for their input.

I'm thinking the small cf rod won't upset the flow too much. I'm using a Feigo motor which should be giving me ~5 ozs thrust. The little edf40 weighs exactly the same as that little Axi prop combo. With the small weight add of the ducting and additional foam pieces I'm hoping this little bugger comes in ~6 ozs.

I want to start the F-14 so bad but I don't want to shelve this little guy...

[roccobro]

It won't make much a difference. Get her to fly and then worry about the small stuff (or big stuff like an F-14!).

Justin

[RCParkflyer]

I Beleive that Dr'e is running the same set-up on his Mini F-22 that he adapted from Mr. Boogie's F-35 EDF plans. His plans and a short video are on my rchomepage plans page. http://www.parkfly.rchomepage.com/plans.html

Your design looks good, you might want to tweak the intake ducting a bit if your low on power, but I wouldn't worry about that CF Rod in the exhaust.

Keep it as light as possible and you should have a nice little EDF parkjet.

[heiert]

Thank you all for the information you share on building and flying the park jets. I have started building my F-15 out of Bluecore FFF. Everything is going smooth so far.

On the topic of Radios I received an e-mail from Tower Hobbies indicating a new Futaba 6EXA Super radio. http://www.towerhobbies.com/products/futaba/futk52.html
The radio is only $179.00 and more in my price range.

Does anyone have any experience with this radio or do you think it would be adequate to fly the jets. Thank you again for all your help and information that you share.

[RCParkflyer]

I have an older model of this radio and it works great, allowing all the necessary mixing you need for all of the parkjets. You can probably get a better deal on ebay just buying the TX as the servo's in the kit are too large/heavy for flying parkjets.

I buy a lot of stuff from this guy
http://stores.ebay.com/Toms-RC-Simulator_W0QQssPageNameZstrkQ3amefsQ3amesstQQtZkm

Here is your radio

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5965678119&refid=store

[Woody_100]

Hi guys,
I flew my F-15 this last weeknd on a 9070 S.F. prop. c.w the cheap brushless motor combo thats being discussed elsewhere.
I'm still waiting for my L.H.S. to get in some 9060, but with the prop i had she flew fairly well.
She was a bit short of speed, so any climbing had to be gentle or she was on the verge of stalling. Speaking of which, might be a bit nose heavy, cos any stall was just a soft dropping of the nose. A real pussycat.
I'm defenitly gonna have to get some LiPo's cos the nimhs seemed to a bit short of power.
I still can't believe I've got a 'jet' model.............:)

just brilliant in the air. Looks awesome.

Ritchie

[jetset44]

Glad to hear it flies well for you, Ritchie. But trust me, if you like it now, you're gonna LOVE it when you get lighter batteries and a more powerful motor! :D Truly flies like a jet when you get it set up that way.

Steve

[jetset44]

>>double post

[GPT]

Good to hear Ritchie.I've started my second F15 and have lipos ready for it this time.

I ran the lipos in my Pitts Bi plane after using the 8 cell Kan packs.I can't go back to nimh now!

I'd tried to avoid going lipo,but after running them I can see why they are so popular.

cheers

Graeme

[Woody_100]

I think I'm going to order a LiPo and a charger this week.

I made a wee mistake with mine last night...............with the battery a bit low on power, I gave it WOT at launch and she torque rolled in, right in front of me!!!!
I feared the worst, but I only cracked a few bits and bent a couple of others, so easily fixed. In fact it the fixing only took about 15mins when I got home.

Thanks for the reply Steve and Graeme................. I was starting to think this thread was dying, now that the F-14 thread is up and active.
Graeme, I hear what your saying about the LiPo's. Everyone saying the same thing is finally getting through my skull too.
I think I'm going to keep the Nimh's though, cos she fair eats up the sky at my local park as she is. With LiPo's I might have to start going out to the field.

Hopefully I'll get out again tonight................

Thanks guys,
Ritchie

[DCobra]

Lol my Kan packs and Nicad packs are collecting alot of dust these days

[Kwok_Yu]

I have built a few balsa planes, but this is my first foamy. So need some help with how to attach the ailerons. The hinge will just be a single strip of tape on the top surface. I plan to bevel the aileron edge 45 degress and leave the wing edge 90 deg. Or should I bevel the wing edge 45 deg also? Is this right?

-Kwok

[DCobra]

Kwok Yu,

You can leave the edge on the wing at 90 deg. and just bevel the aileron surface to 45 deg. That will give more than enough control surface movement.

Good luck with the F-15 build, I am still enjoying mine very much, and has been the most reliable/fun/crashproof plane I've had yet, even better that the two F-18's I have built.

Paul

[Kwok_Yu]

Kwok Yu,

You can leave the edge on the wing at 90 deg. and just bevel the aileron surface to 45 deg. That will give more than enough control surface movement.

Good luck with the F-15 build, I am still enjoying mine very much, and has been the most reliable/fun/crashproof plane I've had yet, even better that the two F-18's I have built.

Paul
Great, its on with the build than. Thanks.

[jetset44]

I have built a few balsa planes, but this is my first foamy. So need some help with how to attach the ailerons. The hinge will just be a single strip of tape on the top surface. I plan to bevel the aileron edge 45 degress and leave the wing edge 90 deg. Or should I bevel the wing edge 45 deg also? Is this right?

-Kwok

One important note--you should use TWO full-span strips of tape for the hinges, one on top and one on bottom. I put the top strip on first, and then rotate the control surface around 180 degrees and apply the bottom piece.

[Kwok_Yu]

One important note--you should use TWO full-span strips of tape for the hinges, one on top and one on bottom. I put the top strip on first, and then rotate the control surface around 180 degrees and apply the bottom piece.
Ok, will do. That actually makes alot of sense. Thanks.

[kscbob1]

In addition to the two strips of gift wrapping tape I make two slits in both the wing and ailerons and epoxy a couple of hinges cut from old 5.25 floppies. Make the slits and then bevel the aileron with two 45 degree bevels.

Bob

[PREACHHAMES]

Hey guys,

I fly a Het R/C F-18, Ultrafly F-16, and a Hangar 9 P-40 (also a Y.A. F-16 ducted fan waiting for my maiden flight). Anyway, this is my 1st Parkjet and I love it! Just recieved my assortment of depron from RCFoam for my next one (F-14). Thanks for all the info. in this thread (set-ups, construction helps, etc.), and I cannot wait to build this F-14 and gladly send Mr. Shumate a donation!

Greg Hames

[Sal C]

My little nano-edf F-15 is ready for maiden (tomorrow?). AUW w/3s TP860 is 5.8 ozs. The first little pusher version came in at 4.9 ozs with 2s TP730's so I'm pretty happy with the weight. Thrust feels good but under 1:1, sounds healthy and should move.

[PREACHHAMES]

Very cool!

[jetset44]

Looks great, Sal! Wow, 5.8 oz is light--sounds promising. Can't wait to hear the flight report. What's the motor in there again?

Your bird also looks great, Greg! I really like the F-15E paint job you went with.

Steve

[crashswiftly]

Steve, Thanks SO MUCH for your plans and the continued support you have offered everyone here.

I am new to electrics and after seing this thread I knew this would be my first electric and my first jet. 2 for 1 :)

I do have a question for anyone who can help me with a little problem.
I have a different motor than what is listed in the plans as recommended so I need to find out if my setup will work or if i need to redo the power system. Like I said, I have never tried any electric so please forgive my ignorance if this is a poor setup...

The jet is finished minus paint and AUW comes to 23 oz.

My power setup is:

Thunder Power 2100 Mah 3s1p
Castle Creations Phoenix 25amp controller
UltraFly B/06/15 Outrunner
APC EP 7.0 x 5.0 Prop

The tech info on my motor can be found here:

http://www.modelflight.com.au/ultrafly/ultrafly_brushless_motor_b_series.htm

The motor is 16 max amp and 1450 RPM/Volt (what ever this means)

With the 7 inch prop, the spec sheet shows the motor will fly up to a 32 oz. Plane if I am reading it correctly.

Thanks for any replies!

P.S. If this combo doesn't work please let me know of a better setup. I don't expect to go 100 MPH but near verticle climbs would be awesome.


Crash

[Photon]

My little nano-edf F-15 is ready for maiden (tomorrow?). AUW w/3s TP860 is 5.8 ozs. The first little pusher version came in at 4.9 ozs with 2s TP730's so I'm pretty happy with the weight. Thrust feels good but under 1:1, sounds healthy and should move.

Sal, Looks great. Good luck with the maiden flight.
Which model Feigao motor are you using?

[Sal C]

Maiden Report: GREAT

Absolutely no wind this morning so I took the little edf F-15 to the field behind work today. Throttled up full and gave it a toss. No prop torque so it took off nicely, loud little bugger. Dialed in a bit of right aileron and down ele and it was flying nicely around the field. I've got both servo rates down to like 30-40% as not much movement is needed. It's slower than the prop version but moves along pretty well. It pretty much floats down on throttle cut and stall is predictable. Roll rate is unbelieveable, very quick. The 3s pack is the key here, 2s doesn't provide enough power. I could lose 3/4 oz if I went to Kokam 340s. I'm pretty happy with this little bird, it's a very stable flier (like all jetset44's designs) and moves pretty well. I'll get some video soon, maybe this weekend...

Steve,

I'm using the 5300kv Feigao in a GWS EDF40. It's drawing 5.9 amps on the 3s TP860's. Weight without battery is 4.1 ozs. With the same 2s 730 pack I was using in the pusher version I'm at 5.3 ozs, this version is only .4 ozs heavier.

[Bill Bergman]

Not a F-15 but pretty darn fast. This weighs in a little less and uses a cd rom powered edf50 unit.

[Sal C]

Bill,

I saw yours and it was one of the nano's that inspired me to try the F-15 as a edf. If I went with a 50mm unit I would've had to upsize a bit more. Nice job on yours...

[Bill Bergman]

Thanks Sal, unfortunately these lack the cool factor of the F-15.
What's the wing span of your mini?

[pacro]

i'm trying out steves F-18 with 2 microfans

[discreetfire]

Steve,

First of all let me add my thanks to you for your great plans and all the help you freely give on this forum.

I have Spitfires and Slow Sticks of various kinds but have always wanted to fly a jet. I was always looking at the duct fan forums for designs, never in pusher props. So I stumbled into this forum and struck gold with your designs. I bought the necessary Depron from DepronUSA and have been building for the past week. What fun. I'm half way done with the F-15.

Question - I'm going to upgrade my Laser 6 to a radio that has mixing for these jets. I know you use the 9C. Is there a less expensive alterative that would give my the mixing results you can achieve with the 9C.

Someone posted that the Futuba 6(something) had that mixing ability. What do you think, if I my ask.

Donation forthcoming.

Rob

[jetset44]

Howdy Rob,
You're welcome for the plans and support--I do it because I live for this stuff... :D And you're gonna love how the F-15 flies when you finish it. It's really a great-flying airplane.

Yes, there are lots of good radios available that will do the job and are less expensive than the 9C. I'd recommend either the Futaba 7C or 6EX or the Hitect Eclipse 7. Any of these have all the programming you'll need for a park jet (flaperons, elevons, and exponential rates). The 6EX is least expensive, but the other two provide an open mixing capability that will be useful if you ever decide to something more complex like the F-14 Park Jet (which requires wing swing to elevator mixing). The biggest advantage of the 9C is it's memory and programmable switches, which is just a convenience.

Good luck! And post pictures of your bird when it's done!

Steve

[Sal C]

Thanks Sal, unfortunately these lack the cool factor of the F-15.
What's the wing span of your mini?

~16.5" ...

[jetset44]

Steve, Thanks SO MUCH for your plans and the continued support you have offered everyone here.

I am new to electrics and after seing this thread I knew this would be my first electric and my first jet. 2 for 1 :)

I do have a question for anyone who can help me with a little problem.
I have a different motor than what is listed in the plans as recommended so I need to find out if my setup will work or if i need to redo the power system. Like I said, I have never tried any electric so please forgive my ignorance if this is a poor setup...

The jet is finished minus paint and AUW comes to 23 oz.

My power setup is:

Thunder Power 2100 Mah 3s1p
Castle Creations Phoenix 25amp controller
UltraFly B/06/15 Outrunner
APC EP 7.0 x 5.0 Prop

The tech info on my motor can be found here:

http://www.modelflight.com.au/ultrafly/ultrafly_brushless_motor_b_series.htm

The motor is 16 max amp and 1450 RPM/Volt (what ever this means)

With the 7 inch prop, the spec sheet shows the motor will fly up to a 32 oz. Plane if I am reading it correctly.

Thanks for any replies!

P.S. If this combo doesn't work please let me know of a better setup. I don't expect to go 100 MPH but near verticle climbs would be awesome.


Crash

Hello Crash,
First of all, WELCOME to Ezone!

You're welcome for the plans. Unfortunately, I don't have any experience with that motor and don't have enough data to enter it into Motocalc so I can't really say how well it will perform. It sounds like it should work well from the link you sent, but I'd sure like to spin a bigger diameter prop on a park jet than 7". 8x6 is a good minimum, and 9x6 works even better as a match for this airframe, IMO. Hopefully somebody that knows this motor will speak up. The specs you sent say it can at 8" prop, but I don't know if that means 8x6 and at what amps...

Otherwise, I think two of the best power setups for any park jet is:

1) Himax 2015-4100, 4.4 gearing, 9x6 prop, 11.1V lipo (this is what I fly exclusively)

2) Axi 2212/26, 9x6 prop, 11.1V lipo (just as much power but much quieter--no gear box noise).

You won't go wrong with either of those motors.

Good luck!

Steve

[jetset44]

Maiden Report: GREAT


WOO HOO!!! GLAD to hear it!

Steve

[GPT]

You have made me happy Steve,seeing that you recommend the Axi 2212/26.Mine just arrived,can't wait to finish it now.

[beanie]

how about the balsapr BP12 motor? anyone know if that would work? if it does, that would be a really cheap alternative at $24 for a brushless. that would fit into the whole concept of the affordable parkflyer.
-beanie

[SuperHornet]

I have my madien flight video to show, this is the first time I have ever flown an rc jet pusher.

My first plane was an GWS estarter that I have flown 5 times.
I have only been into Rc planes for about 2months.

My setup is:
Ultrafly D/13/32kv Brushless motor
25A Esc
2000 kokam Lipo
Apc 7x5E prop

Its quite fast! Flies Great.

The video can be downloaded at
http://rc.shacknet.nu/downloads/index.php?dir=other/

[SuperHornet]

Crashswiftly

Direct Drive with 7x5E
B/06/15 with 3S LIPO you got 160-170 watt. The prop will turn at about 14000 rpm. Faster than a glow 10-15 engine.

I am running the D/13/32Kv with a 3:1 gear ratio and 7x5E prop
see the video, its pretty fast, I was advised that B/06/15 (Direct drive setup) will be faster.

[rmialdea]

I'll get it. This is my F15. It is fantastic. Thank you everybody. It has been a great decision to built the f15, my first electric plane.

[Sal C]

Here's a video of the nano edf F-15...

http://www.salc.rchomepage.com/videos/F-15edf.wmv

[roccobro]

Gooood job Sal! Sounds like you have a great bunch of flyers out there. The bird was a delightful flier too. :D

Justin

[RCParkflyer]

Great Job Sal!!!

Was that built from the 60% plans?

Tom

[GlennS]

Finally got my kit the other day after watching this thread over the past 8 or so months...
On the fwd fuselage sides, the plans call for 3/8 balsa triangle, but the kit has bulkheads that have square cutouts on the corners, not triangle cutouts like on the plans. Does this mean that square balsa is used on the later kits?

Cheers,
Glenn.

[Photon]

The guide refers to scratch builds.
The balsa triangles are one of the things that's done different in the kit.
There are foam strips that replace balsa stock. I believe they should also already have slots for the bulkheads.

[GlennS]

Thanks Photon!

[Woody_100]

Hi guys,
took my dad along to the park this weekend. It was a bit windy and quite gusty too, but I thought, 'well, we're here now' and away we went.
I changed the prop from a 9070 SF to 8060 SF and it went much better. She really wanted to climb out, where before, it was a bit of a struggle.
Anyway, we were grooving along doing a few rolls and things and all was well with the (my) world. :p
Turning into the wind I lost her. She must have caught a big gust, as oine minute I'm a happy bunny, and the next she was nose down and diving. Couldn't pull her out either. :o
Straight in from about 30/40' and WOT. I'll post a pic as soon as I get one, but suffice to say the nose is kinda crushed. the front 3 Bulkheads blew out as the nose tried to drive through and the front fuse sides are well crooked.
I guess it's all fixable as the wing and main body are fine.

A shame really as our local club are holding a longest day evening electric fly in and this is my only electric model, so it looks like I'll be spectating, unless I get some serious depron bashing on the go tonight............ :o

Ritchie

[Woody_100]

Here she lies.....................all busted up :o

[Woody_100]

I finally took her out from the back of the car last night..............and 3hrs later, she's ready to paint :D

I made the nose out of 4 pieces of Depron as someone did previously ( I forget who, sorry ) and its certainly lighter. Because it doesn't need any carving as such, and due to my inability to carve well, it's looks a lot neater too.
Grafting on a new nose like this is a lot weaker than original, even with extra re-inforcing, but we'll just have ot see how it goes. :rolleyes:

I'm happy anyway,
Ritchie

[Sal C]

Great Job Sal!!!

Was that built from the 60% plans?

Tom

I uploaded a copy of the plans in this thread, tiled and non-tiled...

http://www.rcgroups.com/forums/showthread.php?p=3910424#post3910424

[im-sad]

woody , seeing that it fell from 30-40' thats not bad damage, and nice looking repairs too. And the one who did 4 piece nose was me.;)

[DCobra]

Good looking repairs woody! Don't feel bad, the nose on my F-15 has been twice repaired and is due for a replacement on the next smashing lol. It has held up pretty well, and has never had any damage behind where the intakes start. Amazingly, the canopy has stayed in one piece in both crashes as well.

Paul

[localbuyer]

Hi Cal
How many Amps drawed for using 3S on EDF 40 with 5800Kv Feigao?


Thanks