F-107 Foam Park Jet [Archive]

bigdoginit

Mar 06, 2005, 10:07 AM

NORTH AMERICAN F-107A ULTRA SABRE

Late in 1954, the Air Force issued a Requirement calling for a tactical fighter-bomber and air-superiority day or night fighter capable of delivering a nuclear payload at Mach 2 speeds. The major offensive load was to consist of a nuclear weapon carried semi-submerged in the fuselage belly on the centerline. North American Aviation reconfigured there F-100 Super Sabre design to meet these requirements. The first versions were designated F-100B, but when the U.S. Air Force ordered prototypes, the designation changed to YF-107A.

Pratt & Whitney had just developed the J75 turbojet, a newer and more powerful engine. North American enthusiastically embraced this engine as the power plant for the F-107A. Unfortunately, wind tunnel tests showed that there would be major problems with weapon release and separation caused by airflow interference from the nose and chin air intake. In order to correct this problem, it was decided to move the air intake from the nose to the top of the fuselage just behind the cockpit. This intake was fitted with a complex system of variable inlet ramps to adjust for optimal airflow to the engine at various speeds. Because of the unusual location of the air intake, it was necessary for the canopy to open straight up rather than in the usual clamshell fashion. In an emergency, the pilot could eject right through the canopy without having to jettison it first. The aircraft also had an early fly-by-wire control system known as the Augmented Longitudinal Control System (ALCS).

Unfortunately, the variable-geometry duct did not live up to its expectations. In spite of repeated attempts at steady climbs at subsonic or supersonic speeds and even zoom climbs from maximum speed at 35,000 feet, it was never able to get above 51,000 feet. This was blamed on problems with the variable-geometry intake duct and the J75 engine, both of which were relatively new at the time.
In March 1957, the USAF decided to go with the F-105 Thunder Chief, and the F-107 was relegated to aerodynamic testing duties. The F-107A was the last fighter North American Aviation built for the USAF, and it flew Mach 2 in its first all-out test flights, quite an accomplishment.

bigdoginit

Mar 06, 2005, 10:10 AM

Hello,
I’m lucky enough to live right next door to the Pima Air and Space Museum and have always enjoyed walking through the many jets they have on display. The F-107A has always been a favorite of mine, with the great lines and wild intake position so I had to try it as a park flyer.
Before I go any further I need to thank Steve Shumate (jettset44) for his great design and construction techniques used in his Park Jets(F-18, T38, Gripen etc...) that he has been nice enough to share with us. Their ease of construction and performance has inspired many of us to design new jets to fly, share and enjoy!
Also I have to thank all others that have taken the time to share their planes and ideas with us. Thank You!

This plane was a joy to build and just as fun to fly!

Below are the specifications of the prototype:
Span: 30.0 in
Length: 41.2 in
Wing area: 285 sq in
Weight RTF: 18.2 oz
Wing loading: 9.1 oz/ft2
Motor: Hi-max HA2025-4200 w 4.4:1 gearing
Battery: Thunder Power 11.1v 1320 mAh lipo
Prop: APC 9x7 SF or GWS 9X7 SF
ESC: Castle Creations Phoenix 25
Receiver: GWS R4P
Servos: HS 55 (3)
Controls: flaperons, full flying horizontal stab (rudder optional)
Throws: flaperons ½ in, stabilizer ¾ in

The whole thing was built using 6mm BlueCore fan fold foam, carbon rods, a little tape and some light ply. I recommend using Depron foam to increase ease of construction and it gives a better finish (I was out at the time).This model was only intended as a prototype and with some careful building it could be made to weigh much less. Most of the assembly was done using 3M spray adhesive. Epoxy was used in areas where strength was needed. The landing gear was an after thought and made just for static display. It removes easily for flight.

Flight performance with this jet has been very good. The brushless motor set up makes for easy ¾ power hand launches. I have had no problem with torque roll on launch. The CG on the plans has worked well for me and I didn’t have to add any additional weight to the front end, just the battery. This plane can be a screamer. She will give you many nice maneuvers as well as some great high speed low passes. I was also able to power her down and float in for some nice soft landings.

Below I have posted the plan in PDF. It is a little crud, sorry. I wasn’t able to get a detailed image under the 100 kb post limit but I wanted to share it anyway. If anyone can host a more detailed image I will send it. I have also tried to make a small construction guide that is posted below. Each page is listed separate because of file size. Cut and paste them in Word to make a complete guide. If you have any questions please ask. I’m sure me or one of our fellow E-Zoners will try to help.
Enjoy!

bigdoginit

Mar 06, 2005, 10:13 AM

Assembly is very simple

bigdoginit

Mar 06, 2005, 10:17 AM

Heres a few flight pics, good fun :D

bigdoginit

Mar 06, 2005, 10:23 AM

Here is the plan. Its a little crud for I don't have any CAD skills or program avaliable. It was hand drawn and scanned in :)

bigdoginit

Mar 06, 2005, 10:25 AM

Steve(Jetset44) Has been kind enough to Host a higher res picture of the plans and the complete Instruction manual. :D Thank You Steve!

Here are the links:

Plan
http://jetset44.rchomepage.com/F-107_Park_Flyer_Plans.pdf

Manual
http://jetset44.rchomepage.com/F-107_Instructions_Full.doc

If you download the full instruction manual just ignore the 3 posts below. The links above were edited in after the posts below where made. :o

Update: 4/27/05 - Plan has been redrawn in AutoCad thanks to Jeff(OCmodels)! The link above is for the new plan, Enjoy!

bigdoginit

Mar 06, 2005, 10:32 AM

Here are the pages to the assembly guide. They are by no means complete but I think they might help. Paste them each into MS Word to make a complete guide. :)

bigdoginit

Mar 06, 2005, 10:34 AM

Pages 6-10

bigdoginit

Mar 06, 2005, 10:35 AM

Pages 11-15

bigdoginit

Mar 06, 2005, 10:39 AM

Last few pages. If anyone can host the complete manual please do :)

bigdoginit

Mar 06, 2005, 10:47 AM

Below is a pic of the decal sheet from a plastic kit. I found it late and didnt use it but thought it might be helpful to others.
Please any questions or comments on anything just ask.
Enjoy!
CHAD

Thomas Nelson

Mar 06, 2005, 11:12 AM

Very nice job, Chad!

Looks like you managed a very respectable finish on the fanfold. I'd think silver would be one of the more challenging colors to attempt.

Looking forward to some vids. And can you explain how you scanned that humongo plan? Kinkos??

tn

bigdoginit

Mar 06, 2005, 11:41 AM

Thank you Thomas, yes I agree the fan fold is tough to get a nice finish on. I thinned some light spackle, brushed it on and sanded away trying to keep it light. I'm not a good painter at all :( but I try for something respectable :o .
The templates were traced on a large sheet.Then taken to Kinkos, reduced on their large copier to fit in 8x11 and scanned in at home. My lazy man way of getting scale plans on file. :)

greddin

Mar 06, 2005, 12:08 PM

Congratulations Chad, on a really practical rendition of this most interesting subject - don't you just love those '50s jets! Great job. :)

Graham.

bigdoginit

Mar 06, 2005, 12:14 PM

Thanks Graham, ya the jets from the 50's and 60's make great subjects for this type of park flyer. Gotta love em!

Chad

flanker

Mar 06, 2005, 01:57 PM

Great work!!! Chad I would love to make this one. I guess I better order some Depron fast. Let us know how it flies. Great job on the paint -- very smooth finish. How much weight did paint add.

alf

Mar 06, 2005, 02:43 PM

fantastic work, very nice finish, thx for sharing the plan and instructions :)
my list to do increases :D

Greetings from Germany
Ralph

jetset44

Mar 06, 2005, 03:59 PM

Hawker

Mar 06, 2005, 05:32 PM

WOW!!!! Chad that looks AWESOME! It couldn't look any better! Man you should be very proud of yourself. :D I like how you didn't post any teaser pics or "I'm gonna build this" kind of thread. Just like Emeril, BAM! there it is!

Congrats on a gorgeous plane! Thanks for posting plans too.

John Boren

Mar 06, 2005, 06:05 PM

Hello Chad,

Just this morning I was thinking about getting back to my CAD drawing of the F 107 I stated a couple years ago. I was going to make it for Turbine power and this morning I thought I would scale it down and put an electric fan unit in it. Now I see someone has beat me to a flying model of one. It looks really nice in the air.

I look forward to reading a flying report on your wonderful creation

John Boren

bigdoginit

Mar 06, 2005, 07:21 PM

Great work!!! Chad I would love to make this one. I guess I better order some Depron fast. Let us know how it flies. Great job on the paint -- very smooth finish. How much weight did paint add.

Thank you, I need some more Depron myself. My order should be at the door this week.
She flies great, this girl can move. I had fun bringing her down for some hot low fly-bys.
The spackle, paint and decals added about 1.7 OZ.

Chad

bigdoginit

Mar 06, 2005, 07:24 PM

fantastic work, very nice finish, thx for sharing the plan and instructions :)
my list to do increases :D

Greetings from Germany
Ralph
Thanks for the comment Ralph. My to build list is quite large also :eek: .Your welcome for the plans. Enjoy!
Chad

blucor basher

Mar 06, 2005, 07:33 PM

Wow...NICE!

Mr. Boogie

Mar 06, 2005, 07:36 PM

Very Nice job Chad!

From the build images to the inflight photo's. You've done a fantastic job and your finish looks great.

Mr. Boogie

bigdoginit

Mar 06, 2005, 07:37 PM

HOLY MACKERAL!!! That ship is GORGEOUS, Chad! Fantastic work! :D The F-107 has been one of my favorite 1950's jets ever since I saw the prototype at the USAF Museum in Dayton. What a great subject to model as a park jet!

I'm amazed at that exceptional finish you achieved--especially with an AUW of only 18 oz. Excellent work. It's hard to believe this jet is built from BlueCore!

Thanks for sharing the plans! Any flight videos in work? ;)

Steve

Thank you much Steve. The Pima Air and Space museum by me just refurbished their 107 and she looks great! I took like 50 pictures of it. :p

I would love to see her built out of Depron to get a really nice finish. Maybe someone will, and show us the pics. :)

Sorry I'm not able to share some flight video, at the moment i only have an old school video camera. :( Hopefully soon.

Chad

Ken Lapointe

Mar 06, 2005, 07:40 PM

Great job, You really captured the lines and grace of the full scale plane

Superb model

- Ken

bigdoginit

Mar 06, 2005, 07:41 PM

bigdoginit

Mar 06, 2005, 07:54 PM

Thank you
Mr. Boogie, Blucor Basher, Ken and others for your comments. I hope to see pictures soon of some 107 planes in the works. :) She builds quick and is a blast to fly.
Thanks again
Chad

bigdoginit

Mar 06, 2005, 07:56 PM

psycho_klown66

Mar 06, 2005, 11:50 PM

OOoooOhhhh.... YEAH !!! Looks great! :D

Oski

Mar 06, 2005, 11:58 PM

Would someone pleaaaase compile the instructions. I can't find MSword on my windows 98. Maybe I never installed it?

Mike

bigdoginit

Mar 07, 2005, 09:12 AM

Hi Mike,
The complete instruction manual file is now avaliable for download on the first page, post #6.
Enjoy!

Chad

rdeters

Mar 07, 2005, 10:46 AM

Excellent job, very clever with the landing gear.

Ron

Bob Reynolds

Mar 07, 2005, 01:39 PM

Are you going to bring it out for thr Jet Rally this weekend? TIMPA, Mar 11-13 :D

Oski

Mar 07, 2005, 01:58 PM

Got them both downloaded. Thank you Steve and Chad. Now off to the printer shop!

Mike

bigdoginit

Mar 07, 2005, 11:12 PM

Ron - ya the gear was just for fun but i liked the way it looked. Heres another shot of them and a few others.

Bob - I'm gonna try and make it out to the Rally, good times. I did make the Tucson Aerobatic Shootout. The freestyle was awesome and so was the BBQ. :D

Mike - sounds good. Show us pictures of your progress. :)

GO-RC

Mar 19, 2005, 02:35 AM

Wow! very sweet!
Parts are being cut first thing tomorrow.
The finish is great are those store bought decals or did you make and print some of your own?

RCParkflyer

Mar 19, 2005, 04:42 AM

If ya Ever get to Dayton OH don't pass up the chance
to see this jet in the X-planes hanger at Wright-Pat.
You need to catch the bus from the Museum to get on the base.
The other side of the hanger holds the Presidents planes (Air Force 1's).

http://www.parkfly.rchomepage.com/USAF%20Museum%20046.jpg

Arbo

Mar 19, 2005, 11:08 AM

Outstanding work... looks awesome....

GO-RC

Mar 19, 2005, 03:56 PM

Also what color paint did you use.

bigdoginit

Mar 19, 2005, 08:49 PM

Hello,
Go Rc - I bought the decals from my local Hobby Barn. They are SIG decal sets and lettering. Found a couple sheets that would work for about $6.00 total. Colors are Testors Flat Red and Light Gray Metallic .

RCparkflyer - nice pic looks like they have quite a few nice planes in there! X-planes are always very interesting.

Chad

RCParkflyer

Mar 19, 2005, 09:33 PM

It's a shame they don't have a larger area to display all the X-planes, that hanger is really crammed full of jets, and you have to wind your way around some of the most famous jets in Aviation history just to move around. I spent most of my time looking at the XB-70 but every plane in there has a historic tale to tell. It's like walking into a shrine, for me anyway, you jaw just drops open in awe.... to be able to walk right up to the X-15-A2 and look into that itty bitty window, and imagine seeing Pete Knight sitting in here... then having to squeeze betweeen the X-15 and the X-10, so you can stand UNDER the massive 6 engine pod of the XB-70... They tell you ya can't touch the aircraft, but how can you resist such a thing (sigh)

bigdoginit

Mar 20, 2005, 02:53 PM

I feel the same walking through the Air and Space museum here in Tucson. Most of their planes are outside and not all are in the best condition but they do have a large collection. They also have some very nice planes that have been restored. I visit maybe once a month now or when I need some motivation to finish a model.
Chad
PS. I would love to see that Xb-70 up close :D

RCParkflyer

Mar 20, 2005, 08:20 PM

I visit maybe once a month now or when I need some motivation to finish a model.

I'd be putting up a tent under the SR :eek:

Here's a couple of biggie shots of the XB-70 and there are some "Other" Notable Aircraft in the shots too.

X-2B
XF-95 Goblin
X-24B (Behind the X-2)
F-16 ATF
DarkStar UAV

http://www.parkfly.rchomepage.com/USAF Museum 026.jpg

This shot shows mainly the nose of the B-70 although you can see the F-107's exhaust, and to the left, the Nose of an A-12 (Used by the CIA) and under the nose of the XB-70 is the X-29 (Although I don't remember seeing, or I'd have taken a pic)

The prop plane (Don't recall the designation) is powered by a Jet engine

http://www.parkfly.rchomepage.com/USAF%20Museum%20043.jpg

bigdoginit

Mar 20, 2005, 09:44 PM

Wow they do have them packed in don't they! When is someone gonna design a foamy XB-70? or have they! It has to be one of the coolest looking planes out there. Great photos!

Chad

RCParkflyer

Mar 20, 2005, 11:44 PM

There have been a few balsa builds so far but no foamy ones. (YET)

Steve Neill (U812) built a single EDF, and Steve M (Prof_Manouver) Built a 3 EDF Version. (but I can't find a pic of it right now :( )

The Zip file is from the Russian 3-view site

bigdoginit

Mar 21, 2005, 01:03 AM

Nice plane he has there!
Hmmm, looks like a good canidate for this type of foam construction. Should balance well as a pusher. Hmmm.... :cool:

RCParkflyer

Mar 21, 2005, 07:43 AM

This might help ya out too

http://eam.net/B70.htm

R1TTLER

Mar 22, 2005, 02:40 PM

Well You Have Out Done Yourself. This Is A Really Nice Build. I Hope To See More Of Your Builds In The Future. Congrats On A Job Well Done. :) :)

Ralph Brekan

Mar 22, 2005, 02:54 PM

Great use of Parkzones J-3 cub landing gear

fuelsguy

Mar 22, 2005, 05:22 PM

One more attaboy. A really well executed model of an unusual airplane.
A second attaboy for the "here it is flying" approach, as someone else noted earlier.
Now back to the depron pile.

Ivor

bigdoginit

Mar 22, 2005, 11:25 PM

Thanks for the comments. I do appreiciate them. I wonder has anyone out there made any progress on a 107 of their own?
Good call on the gear Kamikazi. :cool:

Chad

EAMRC

Mar 23, 2005, 12:00 AM

Piper Pa-48 Enforcer the prop plane in the pic.

RCParkflyer

Mar 23, 2005, 02:02 AM

I ran across these pics tonight, and I thought you might like to see inside the Cockpit of the SR-71 out there in Tucson.

http://www.boulder.swri.edu/~durda/sr71_cp.1.jpg

http://www.boulder.swri.edu/~durda/sr71_cp.2.jpg

http://www.boulder.swri.edu/~durda/sr71_cp.3.jpg

The fellow in the Cockpit is Dan Durda an Asteroid researcher and tonight's interview on Coast to Coast am

http://www.boulder.swri.edu/~durda/ktplume.jpg

You can read about him here http://www.boulder.swri.edu/~durda/

bigdoginit

Mar 24, 2005, 12:24 AM

Cool picture of the interior of the Blackbird "classified equipment removed" I love it. Gonna head over to my local Air force base here on the 2nd. Davis-Monthan is having thier annual Air Show. Lots of fun, the Thunderbirds will be there this year. I'll post some pics after the show.

Chad

RCParkflyer

Mar 24, 2005, 12:36 AM

I really need to move out west, you guys have all the fun, and see the best stuff :)

eatond

Mar 24, 2005, 01:20 AM

I really need to move out west, you guys have all the fun, and see the best stuff
Careful what you wish for RCParkflyer, those fellas out West don't have Bratwurst or cheese curds! :D

Dan Eaton

RCParkflyer

Mar 24, 2005, 02:13 AM

hmmmmmmm sounds like a business opportunity :) Bet they never tasted a Pasty either LOL

Oski

Mar 24, 2005, 02:43 AM

Or Walnut bread!

Mike

bigdoginit

Mar 24, 2005, 09:05 AM

:D Its all about the awesome Mexican food out here but theres nothing like a good bratwurst! They will be selling them at the airshow. :p

RCParkflyer

Mar 24, 2005, 06:22 PM

LOL We have more "Authentic Mexican Restraunts" than we have places that sell Brats here, just as long as you have "Real" Pizza, (not that California Crud they import out here) I'd be a happy camper.

bigdoginit

Mar 26, 2005, 10:57 AM

Well I had a little miss hap yesterday. :eek: I was doing an inverted outside loop and the loop ended up being allot bigger than I wanted. Heehee I flew it right through a deciduous tree in the school yard! There was lots of slapping sounds as it WENT THROUGH but to my amazement it keeps flying! After landing and inspection I found twigs and braches sticking out of it. The paint had been chipped off of every leading edge, even the vertical stabilizer. What took the most damage was the intake. A good size stick was 2" into it. Well the great thing about foam is I just taped it back up and went back to flying. Good times! :D Below are couple photos I took once I got home.

Chad

RCParkflyer

Mar 26, 2005, 12:06 PM

I'm really not gonna ask how you managed to hit the only tree in the desert, or why ya chose to fly within sight of said tree, nope I'm not gonna ask :eek: a cactus I might understand, but a tree? nope I'm not gonna ask... it's like teenagers driving in a parking lot, if there's one light pole, there bound to hit it... Murphy's RC law clearly states that Trees are RC plane magnets.... Outside Inverted loop, eh? (Looking that up in the flight test manual, yup clearly states not to be performed by trees)

Just having a bit of fun :D
I'm sure you have about 5 or 6 replacement airframes cut already for spare parts. The nice thing about building with foam is the cheap airframe costs :)

Good thing you didn't have to eject :eek:

bigdoginit

Apr 09, 2005, 01:18 AM

DOH!
Yep, I need to read up on that Flight test manual. Murphy and me don't always get along. :eek:

Good times. :p

Chad

RCParkflyer

Apr 09, 2005, 09:35 AM

Hi Chad,

Hope everything is repaired ok, gotta give ya credit for at least trying to fly an inverted outside loop, planes are ment to be flown!! Can't stand to see video's of guys who spend all there time doing low high speed passes, so what if it goes fast, how does it perform :) Keep pushing the outside of that envelope!!!

Tom

PIV

Apr 11, 2005, 12:03 PM

I bet you thought it was an F16 when it was inverted and got all disorientated!

bigdoginit

Apr 24, 2005, 05:44 PM

OK finally got some time to begin repairs. Gotta get her back up and in shape. Couple pics below.

I do enjoy flying outside the envelope. I have had a few crashes but I feel these planes are so easy to repair that why not risk a few wild maneuvers. :eek: This plane has about ten dollars in foam, paint and decals. The radio gear is well protected. So why not go for it! Good times :D
Chad

RCParkflyer

Apr 24, 2005, 10:30 PM

Hi Chad, good to see you back at it :) I tried to post a reply before but the "flawless" high speed internet connection took a dump :( That is the nice thing about foam, the repairs, just hack out the bac and glue in the good :)

Watch out for those pesky trees that sneak up on you buddy!!

Tom

david_r2ese

Apr 27, 2005, 10:49 AM

I was just wondering if anyone knows where I could find either full size or tiled plans of this beauty? Scaling it up is a possibility, does anyone know the direct scale % of the original drawings?

Thanks!

Dave

im-sad

Apr 27, 2005, 11:14 AM

Look in the previos pages.

RCParkflyer

Apr 27, 2005, 11:18 AM

david_r2ese

Apr 27, 2005, 12:52 PM

I have copies of all the plans that are posted, both here and in the sticky. the problem is getting the plans printed to 100% actual scale. Both plan sets I have print full scale on a 8.5"x11" sheet. I supose that would be okay if i want to use my 12mm Fiego to power it. :rolleyes:

newcomer

Apr 27, 2005, 02:30 PM

david, here's how i did it. opened pdf file with paint shop pro 9 and magnified it to 100% size. saved this file as paint shop pro image instead of pdf. i then opened this file in tile-print(great program - worth its minimal cost). it will tell you it can't open this format and will then ask if you want to OLE it. do so and give it a couple of minutes. tile print then printed it on 12 sheets which i taped together.

david_r2ese

Apr 27, 2005, 04:34 PM

Newcomer,
Thanks for the info. Unfortunately PSP7 will not read pdf files. guess i'll have to grab some graph paper and scale it up the old way.

Thanks anyway

Dave

RCParkflyer

Apr 27, 2005, 05:06 PM

Don't you have a kinko's or something nearby? A printer with a poster function? Tile-print program?

newcomer

Apr 27, 2005, 06:33 PM

david. i saved the tiles - 12 of them. i can e-mail them to you. they're 3.25mb in size- each. if you want them, pm me with your e=mail address.

bigdoginit

Apr 28, 2005, 01:40 AM

Hey guys.
Quick update on the plans. Jeff(OCmodels) was kind enough to draw up the plans for us with AutoCad. They are very clean and downloadable on the same link from post #6, Enjoy! Thank you Jeff!
Chad

bigdoginit

Apr 28, 2005, 01:54 AM

Continuing progress. Got the intake top sanded to shape. Added a thin coat of light spakle and sanded smooth. All set for a light base coat tonight. easy peeze. :)

RCParkflyer

Apr 28, 2005, 09:08 AM

bigdoginit

May 26, 2005, 03:26 PM

Quick plan update. On the AutoCAD plan the top fuselage piece is 1" to short at the rear. Please add this to your templete before you cut it out. Also formers 3&4 need to have holes cut in them to pass the battery cable through. I will be fixing both of these on the plan as well.

Thanks
Chad

newcomer

Jul 28, 2005, 06:09 PM

Chad, looking to do this as an EDF. any idea what the intake area is ?
did you correct the 1" error on th plan ?

GO-RC

Jul 29, 2005, 03:07 PM

edit.. Doh

bigdoginit

Jul 29, 2005, 03:15 PM

Hi Newcomer,
An EDF would be sweet. If I measure the total of the intake down the sides. It has an area of about 5sq inches. Sorry I have not been able to update the plans. I don’t have the original dxf file or a CAD program, hopefully soon. Anyway it is a very easy fix. I made a quick adjustment on this shot in MS paint to show what I mean. :)

newcomer

Jul 29, 2005, 04:20 PM

Bigdoginit,
thanks for the drawing. gotta get plans printed, then i'll start cutting depron and try to figure what edf to install. will keep you updated.
david

bigdoginit

Jul 29, 2005, 07:24 PM

Sounds good, Have fun.

Chad

GO-RC

Sep 23, 2005, 12:28 AM

Check this out. Could be sweet for F-107 fans.
http://www.rocket.aero/f107a.html

RCParkflyer

Sep 23, 2005, 02:23 AM

dup post

scratchandbash

Jan 08, 2007, 10:15 PM

Thanks Graham, ya the jets from the 50's and 60's make great subjects for this type of park flyer. Gotta love em!

ChadYep, and that's about as new as I like too. Historical subjects are better. (An opinion :D)
Mig21 is as new as I ever scratch built, or have for that matter.

Nice job on the jet too!

Bill

Adlerauge

Nov 20, 2007, 03:34 AM

High Bigdoginit!

Thank you very much for the plans.
Here I wanna show you the result.

http://img222.imageshack.us/img222/2936/dsc00224qb2.jpg (http://imageshack.us)

http://img440.imageshack.us/img440/9108/dsc00236wm6.jpg (http://imageshack.us)

http://img91.imageshack.us/img91/5770/dsc00237hi4.jpg (http://imageshack.us)

http://img207.imageshack.us/img207/6936/dsc00240qs8.jpg (http://imageshack.us)

http://img207.imageshack.us/img207/8137/dsc00242wv5.jpg (http://imageshack.us)

The first flight would be in a few days, when the weather is fine.
Hope you enjoy the Bin Laden on Koks design.

Thomas :D :D

Sgt Dudley

Aug 05, 2008, 07:27 PM

Chad:
I am about 85% completed on an EDF version of your pusher jet model. I just want to check with you and verify that the plans CG is correct? I am curious where you put your battery on yours. I just did a preliminary CG check and it appears that I will be putting the battery on the wing in the center of the fuselage (cutting an access hatch in the top). I am using a LSJS motor with a XF55mm fan unit, it should be emough power, but this will be the first plane that I have built that has the battery so far towards the rear! I guess the really long forward section on the fuselage makes the CG so far to the rear. Usually I have to cut space in the nose to get the battery as far forward to get the CG..kind of strange. I took some pics, I'll post them later. My [lane is to maiden this weekend if all goes okay. After the maiden test I'll do some finish work and paint it.

Your plans were excellent! I used 6mm depron and I modified the air intake section a little different from your plans, based on some photos I took at the USAF museum (I work at Wright-Patt so I went there during lunch to get pics of the jet). I also cut the ailerons different than your full length ones and I used torque rod mounting system. I have all the servos completely inside the fuselage.

Thank you for designing such a unique model! Any tips you could provide would be great!!

Mike