New Products Flash Sale
burkefj's blog View Details
Posted by burkefj | Jan 27, 2014 @ 12:53 PM | 7,243 Views
I've been going through my old designs/plans and slowly re-doing them for public consumption, originally I did an F-8U-III super crusader which was basically a similar design except for the nose and intake. I decided to make it a straight crusader this time. You could take these patterns and make a pointy nose and curved intake snout and re-do it as a super crusader. There are slight wing differences but probably not enough to notice. On the super crusader you'd have to figure out a way to model the ventral fins which are either horizontal or vertical and quite large, on mine I just created some ventral strakes that sort of modeled them from the side view in takeoff position.

I used a center piece with tail and then two doublers on each side to give me enough thickness to give a nice rounded nose and intake.
It would be easy to add some formers or pink foam and add thickness to make it fully 3-d.

Originally I mounted the wing on the top of the fuse with some tabs and glued a fairing cover over the top. On this version, since the real plane has some airfoil thickness, I decided to pick the most forward point of the wing leading edge and use that for the slot location. I think it looks ok like this and allows some foam above the wing to hold it in place and model the fairing that is on top of the wing. In order to lock the wing in place, I'll drive some 2" pieces of 1/8" carbon rod down through the top of the fuse through the wing and into the body and...Continue Reading
Posted by burkefj | Jan 23, 2014 @ 02:50 PM | 6,459 Views
SR-71 rocket boosted RC glider, length 41", wingspan 22", weight rtf 9.5-11 oz using AerotechE6 24mm rocket motors

I'm doing these one at a time, and they take me an hour and a half to cut, they are not laser cut, but are hand cut and fitted. I'm doing a lot of the work for you, the wing surfaces are pre-hinged and have control horns attached. All tabs and slots are cut and test fit. Carbon wing spar grooves are pre-cut. The motor mount is pre made. The lower fuselage spine is pre-laminated. Basic steps are shown here along with instructions, basically the steps are gluing pieces together and taping.

Included:

Airframe with surfaces hinged and horns installed
carbon spars
Nose weight
Pushrods
Motor mount
Rail buttons and screws or launch lug(your choice)
styrene strip for reinforcing
velcro for mounting rx/bec/battery
blenderm tape(for taping wires and reinforcing joints)

Needed to complete:
Receiver
1S 450mah lipo or 2s Lipo battery and BEC(voltage regulator for receiver/servos to convert to 5V
2 10 gram type servos, hs-55 hitec or similar
Transmitter with aileron/elevator mixing capability and ability to put elevator up-trim on a switch.
You will also need 3m-77 spray contact cement and foam safe CA+ and accelerator.
Depron compatible paint(model master/testors non laquer are ok)
silver sharpie for panel lines if desired.

Wing loading is quite light and glide is very docile. You boost vertically on any standard pad with rail or rod, and keep...Continue Reading
Posted by burkefj | Jan 17, 2014 @ 01:13 PM | 7,777 Views
I decided to do another Phantom build, make a few changes to the original and plans. I originally did these because there weren't great simple plans for a phantom at the time. I'm not a big fan of mid mounted engines or box fuses, I'd rather have a slim profile, gives less drag in the air and is quieter. It does require you to mount equipment on the bottom of the wing has the battery mounted on the front side of the nose, but I'm ok with that. Due to the thin profile the wing hits the fuse further forward than on a normal fuse. If desired, you could alter the top view of the wing to include the intake profile and nozzle profile on the rear of the wing so that the top view was more representative, I considered this and decided to leave it clean. If you do this you may need to do some glide tests to confirm CG did not shift as the intake profile will add forward wing area. The wing is not mounted on the bottom, but is in a slot, I did this to give a bit of area under the wing to mount the electronics and not get destroyed on landing.

Maiden video at:
Scratch built RC F-4 Phantom II pusher parkjet (3 min 12 sec)


Here is the Rocket boosted flights...

F-4 phantom scratch built parkjet/rocket boosted glider (2 min 0 sec)
...Continue Reading
Posted by burkefj | Jan 13, 2014 @ 12:41 AM | 7,113 Views
While recovering from my foot surgery, I was watching all sorts of youtube videos on F-105's etc.....Then I realized I don't have any enemies for my thud. I decided to go back to my original Mig 21 profile and change it to a cruciform style instead of a true profile fuse...This saved a bit of weight, but meant the CG would have to move forward a bit. It did give more surface area though so the wing loading would decrease. I went back to my mig thread and saw some pictures a guy had done with panel lines so I went that route. Looks like rtf it will be about 11.5 oz. Did my normal rocket motor mount so I can do rocket glider or with my pusher pod installed.

I went with Czech markings as I have some bohemian in my blood....

Maiden went well, was a little too nose heavy, so removed some weight and it flies really nicely, was a bit windy today.

Mig 21 profile pusher RC parkjet (3 min 42 sec)


Frank
Posted by burkefj | Jan 06, 2014 @ 06:36 PM | 7,598 Views
I discovered that the evergreen aviation museum has a thunderchief now on display....It was a nice sunny day so I took some photos....didn't take me long to decide to upscale my original 3mm micro version to 6mm and 39" long...Kinkos did the scaling for me from my original plans. I decided to use a doubled central fuse with two side doublers, and 3mm covers over the rocket mount that also doubles for mounting my grayson microjet motor. Plane is already framed up awaiting an esc and maiden to confirm the CG. I stuck with a full flying tail only. This is a single seat D version. Not sure on the colors yet, I'll probably go with the light bottom and camo top like these photos..... Here are some pictures from Evergreen.....The original small version, and my newer version.

Update 1/7 Finished the painting, now just need to do some panel lines, a few letter markings and wait for my ESC.

Update 1/8 Finished the markings and panel lines, esc is in today but rain for the next week Looks like right around 14 oz rtf.

Update 1/13 Maiden went well, CG was right on, was very windy today but handled it well.

Video will be at:
F-105 Thunderchief RC parkjet (2 min 17 sec)


...Continue Reading
Posted by burkefj | Jan 06, 2014 @ 04:58 PM | 7,513 Views
F-106 Delta Dart Kit weight RTF is 10-12 oz for the aerotech reloadable 24mm E-6 rc reloads. This model has boosted and flown in 15-20mph gusty conditions and it performed great with no issues. It was very easy to keep heading straight up and into the wind. Landings were very predictable. I was able to do rolls while hovering into the headwind.

I'm doing these one at a time, and they take me an hour and a half to cut, they are not laser cut, but are hand cut and fitted.I'm doing a lot of the work for you, Fuselage sides are laminated with a carbon nose reinforcing, wing spars are pre-slotted, Elevons are pre-hinged. The motor mount is pre made. The joints I've cut to fit it into the box are pre-taped with blenderm, so you unfold them, apply CA+ to the joint and they are ready to be assembled...

Basic steps and instructions for download are shown here basically the steps are gluing pieces together and taping.


Included:

Airframe pieces with carbon spars, elevons (pre-installed)
Control Horns
Nose weight
Pushrods
Motor mount
Rail buttons and screws or launch lug(your choice)
styrene strip for reinforcing
velcro for mounting rx/bec/battery
blenderm tape(for taping wires and reinforcing joints)

Needed to complete:
Receiver
1S lipo 450mah or BEC(voltage regulator for receiver/servos) and 2s Lipo battery and nose weight, something around 1.5-1.7 ounces is fine, or use a lighter battery and add nose weight.
2 10 gram type servos, hs-55 hitec or similar
Transmitter...Continue Reading
Posted by burkefj | Dec 31, 2013 @ 12:22 PM | 6,110 Views
Well, my son got his learners permit so I had him drive down to the Evergreen Aviation museum for some practice, got in some flight time on my dart at the RC field there and took some photos of the Dart they have. Right next to it is a dagger, and while I like the dart a bit better, I figured I could modify the airframe slightly of the dart, keep the same wing/CG and create a dagger as well. I've got the plans and parts done and cut out, it took a bit more work, and some extra pieces. The canopy is moved back and the nose portion is relatively longer. The tail and speed brake shape are different. I created some wing strake pieces and the tail strakes as well.

For the rear engine humps(my name) they lined up perfectly with where I wanted my motor mount so they posed a bit of a problem. I finally wound up laminating two 6mm pieces with just the outer ones having the extensions and they sort of surround the microjet motor.

Maiden video at:
F102 Delta Dagger RC parkjet or rocket boosted RC glider (3 min 45 sec)


Plans are on the plans page.

12.5 oz rtf with the same components I used on the six.

...Continue Reading
Posted by burkefj | Dec 29, 2013 @ 07:00 PM | 6,082 Views
I've always wanted to do a dart, but there have been a lot of them and so I never got around to it till now. This takes a single sheet of 6mm 26.5x39" depron. I used one piece of tubular 1/8" carbon rod to do the wing spar, pushrod reinforcements, and nose reinforcement. No other carbon needed.

You simply print out the plans making sure they are not scaled and you are using borderless printing. Then cut out the templates and mark the depron. Once you have marked the right and left fuse sides, you can cut out the intake doublers and make a left and right of those as well. Only half the wing is shown, simple flip over and trace the other side. Cut out the depron. I grooved and inserted a piece of 1/8" carbon rod in the nose running to about 3" aft and below the wing leading edge to reinforce the nose. I used 3M77 spray to joint the right and left sides. I then sanded the rounded portions of the nose and fuse/vertical stab. Once that is done you can slot for the wing. I then rounded the left and right intake doublers and glued them with 3m77 spray just above the wing slot. You can cut out for the motor tube if you are makiing a rocket glider, or cut out to fit your motor. If you are mounting the motor on a plate you should put a small piece of carbon rod in the middle of the motor plate and drill and glue that into the tail to give it some strength. Make sure to leave clearance for the prop to clear the speed brake extension.

I then did...Continue Reading
Posted by burkefj | Dec 29, 2013 @ 06:47 PM | 2,039 Views
Here is my V-1 Buzzbomb rocket boosted RC glider,as a kit offering. 39" long and 26" wingspan, weight RTF is 11.5-12.5 oz and designed to fly on the aerotech reloadable 24mm D-7, E-7 and E-6 rc reloads. This will also fly quite well on the old D11P plugged motors. Or the Quest D5P motor available from Apogee components will work with appropriate adapter or taping it to fit.

I'm doing these one at a time, and they take me an hour and a half to cut, they are not laser cut, but are hand cut and fitted. I'm doing a lot of the work for you,. All tabs and slots are cut and test fit. Carbon wing spar is pre-installed as are the full flying tail surfaces. The motor mount is pre made. Basic steps are shown here along with instructions, basically the steps are gluing pieces together and taping.

Included:

Airframe with carbon spar and full flying tail surfaces installed
Nose weight
Pushrods
Motor mount
Rail buttons and screws or launch lug(your choice)
styrene strip for reinforcing
velcro for mounting rx/bec/battery
blenderm tape(for taping wires and reinforcing joints)

Needed to complete:
Receiver
BEC(voltage regulator for receiver/servos)
2s Lipo battery and nose weight, something around 1.5-1.7 ounces is fine, or use a lighter battery and add nose weight.
2 10 gram type servos, hs-55 hitec or similar
Transmitter with aileron/elevator mixing capability and ability to put elevator up-trim on a switch.
You will also need foam safe CA+ and accelerator.
Depron...Continue Reading
Posted by burkefj | Dec 22, 2013 @ 03:18 PM | 5,989 Views
Flight video
Scratch built V-1 Buzzbomb RC pusher parkjet (4 min 7 sec)


I've been slowly going through some of my less flown rocket gliders to convert them for pusher so i can give them some more flight time. Normally this means a slight modification of the motor clip to use my grayson microjet V-3 that is mounted on an adapter. I have to swap a 20a esc for the BEC, and install the motor wires back to the rear and then re-balance. Most of the time I can just use an 800mah 3s pack for this motor on planes up to 16 oz. I normally use a 8002s pack for rocket boost and have the CG set for that, and with the pusher and the 3s pack I normally only have to add a quarter ounce or so to get the CG back to spec.

I decided to modify my Buzzbomb but thought a tractor setup would be better since I wouldn't have to trim the rudder to clear the prop if I did it as a pusher. I considered doing a tractor in the front of the pulsejet pod but there wasn't enough prop clearance in this small of a model(I had done it that way on my larger buzzbomb back in the day).

Well, it was a very interesting day yesterday. Really strange behavior, like it was tail heavy. Had to run it very nose heavy to get any control at all. Had all sorts of adverse yaw in banks. I tried all sorts of down and right thrust and it was slightly better. Finally upon suggestion I tried a bit of aileron reflex and it got better, but still wasn't flying normally. I finally concluded that the rotating...Continue Reading
Posted by burkefj | Oct 20, 2013 @ 11:10 PM | 6,929 Views
Since I lost my original B-58 in a tree several years ago, I've been missing it.
So, I broke out the plans, made some modifications, and decided to save a bit of weight, would just keep it in the white, which also allowed me to do panel line detail.

It is 12 oz so far, without esc, motor and battery. 32" ws and 49" long. I doubled all the way to the fuse nose this time, and used 6mm doubled on the motor pods in this version.

I didn't want to splice that much so I used four compete 27.5x39" depron sheets and there was a lot left over, I only spliced the center section nose about 10" or so. Not much carbon needed, just some strip in each engine pod, two wing spars and a tail strip for stiffening. I did use some leftover spar rod in the tail to secure the motor plate to.

Here's the new video...

Scratch Built RC B-58 Hustler pusher parkjet (1 min 54 sec)




Frank
Posted by burkefj | Oct 14, 2013 @ 12:23 PM | 6,830 Views
I had two very successful flights this weekend in Brothers, Oregon, and a bit thanks to the John Lyngdal, Gary Goncher, Tim, the other Tim, and Robert for helping out, and to all the OROC folks for putting on a great launch, and providing a great dinner, and to my wife, Sophie for helping out in the cold.

First flight was on a J-570 and was perfect, just a slight 5 degree angle caused by wind about 100 feet up, missileworks micro altimiter worked perfectly, 1300', no damage. Second flight was on a J-510, slightly more tail heavy, video will show a slight wiggle then it straightens out, again, perfect altimiter deployment with motor backup, 1700' and zero damage on landing. Very rewarding project and looked very good flying.



...Continue Reading
Posted by burkefj | Oct 11, 2013 @ 01:08 PM | 2,981 Views
Here is my X-2 rocket boosted RC glider,as a kit offering. 39" long and 34" wingspan, weight RTF is 13.5 oz for the aerotech reloadable 24mm D-7, E-7 and E-6 rc reloads. This will also fly quite well on the old D11P plugged motors. Or the Quest D5P motor available from Apogee components will work with appropriate adapter or taping it to fit.

I'm doing these one at a time, and they take me two hours to cut and fit, they are not laser cut, but are hand cut and fitted.I'm doing a lot of the work for you,. All tabs and slots are cut and test fit. Carbon wing spars are pre-fit as are the full flying tail surfaces which have the torque tubes installed. The motor mount is pre made. Basic steps are shown here along with instructions, basically the steps are gluing pieces together and taping.

Included:

Airframe with carbon spar and full flying tail surfaces with torque tubes installed.
Nose weight
Pushrods
Motor mount
Rail buttons and screws or launch lug(your choice)
styrene strip for reinforcing
velcro for mounting rx/bec/battery
blenderm tape(for taping wires and reinforcing joints)

Needed to complete:
Receiver
BEC(voltage regulator for receiver/servos)
2s Lipo battery and nose weight, something around 1.5-1.7 ounces is fine, or use a lighter battery and add nose weight.
2 10 gram type servos, hs-55 hitec or similar
Transmitter with aileron/elevator mixing capability and ability to put elevator up-trim on a switch.
You will also need 3m-77 spray contact cement...Continue Reading
Posted by burkefj | Oct 01, 2013 @ 06:59 PM | 7,557 Views
Here it is, the InteR-Ceptor rocket boosted glider kit. 42" long, 18" wingspan, 10 oz rtf for 24mm aerotech E-6 rocket motors. Has that classic sci-fi long range interceptor look, simple profile construction. Much of the work is done for you, full flying tail surfaces installed, wing grooved for spar, rocket mount completed. Simply unfold, glue, tape, install radio gear.

Included:

Airframe with carbon spar and full flying tail surfaces installed
Nose weight
Pushrods
Motor mount
Rail buttons and screws or launch lug(your choice)
styrene strip for reinforcing
velcro for mounting rx/bec/battery
blenderm tape(for taping wires and reinforcing joints)

Needed to complete:
Receiver
1S lipo 450mah or BEC(voltage regulator for receiver/servos) and 2s Lipo battery and nose weight, something around 1.5-1.7 ounces is fine, or use a lighter battery and add nose weight.
2 10 gram type servos, hs-55 hitec or similar
Transmitter with aileron/elevator mixing capability and ability to put elevator up-trim on a switch.
You will also need foam safe CA+ and accelerator.
Depron compatible paint(model master/testors non laquer are ok)
Black sharpie for panel lines if desired.
Decal/vinyl accents, stars/bars etc.

Wing loading is quite light and glide is very docile. You boost vertically on any standard pad with rail or rod, and keep the model flying straight up till burnout, then pitch over, set up your glide trim and enjoy.

I have a few sets of machine cut vinyl self...Continue Reading
Posted by burkefj | Jan 08, 2013 @ 03:59 PM | 6,509 Views
My name is Frank and I'm a cat-a-holic....could even be called a hoarder of cats....they all came to me in different ways and I love them all. Below are 5 of the 7 I currently take care of....

Current collection........

Tommy: He's my secret favorite and my good buddy, he is the sweetest cat you could imagine. My daughter and I picked him out of shelter with his sister, Coco.

Baby: He wandered in to our house last thanksgiving day, and went to sleep on the couch. He's small but doesn't take any crap from the others. He is quick to talk to you and purr loudly, he always wants a snack....I don't know why he doesn't weigh 40 pounds....

Mischa: He reminds me of a meercat.......We got him from a shelter with his brother Sascha, they were the cutest twins....we had to use colored collars to tell them apart...Mischa sleeps in the strangest positions.....He is like a coiled spring. He sits outside the patio door at night and jumps up to catch bugs, he can jump about 5 feet high.......dude has air...

Sascha: He likes to sleep in the sink or any other small confined space....

Cubby: He was dropped off at our neighbors house when he was 5 weeks old in a paper bag....we took him in.....He's got the biggest eyes...if anyone could give you that helpless look like puss in boots does in Shrek, Cubby can do it..he could give you that look and you'd do pretty much anything for him....



Passed Friends no longer with us...

Cairo: He's was big doofus and...Continue Reading
Posted by burkefj | Dec 25, 2012 @ 08:46 PM | 9,646 Views
Thanks to my lovely family who got me enough foam, and electronics to make another rocket glider. They also gave me a half a day repreive yesterday and today to work on it. I've been wanting to try a spaceship one , but have been worried about CG, twisting and stiffness of the tail booms. It came out ok, I wound up having to put some parallel stiffeners on the bottom of the wing to help prevent twist.

I couldn't find a decent 3-view that I liked or thought was right, so I just did this freehand from a book I have from pictures and relative sizing. I think it captures the look if not perfect scale. The full flying control surface placement was dictated by the fact that I wanted to put the pivot rod accross the fuse and tie it in just in front of the rocket motor mount. This helps reduce the twist of the tail booms and worked well, and actually came close to where they are supposed to be. Since I was doing a cruciform structure, I had to move the wing placement to the middle of the fuse instead of the upper portion, but I don't think it makes that big of a difference in look. I did not add the later stub strake fins in front of the control surfaces yet till I fly it and see how it does without them. Due to the lack of stiffness of the booms, I glued in carbon tubes in each one and laminated a 3mm cover over the tube, that made them very stiff. The wing still had some twist so I used two carbon tube spars as well.

I mounted the servos as far forward as I could to...Continue Reading
Posted by burkefj | Dec 20, 2012 @ 10:47 PM | 9,471 Views
I decided I wanted to try doing one of the proposed Delta wing configurations for the X-15-3 plane, I chose the one normally modeled with the diamond wingtips...I made it simply by taking my X-15 plans, stretching the fuse the scale amount(about 10 inches) and changing the top view to a delta with wingtips. I added some 3mm covers on the sides of the fuse to sort of give it a look like the fairings had. It gives it a bit more body. It's all completed except for painting now, and the fairings added quite a bit of stiffness to the body. It came out at 55.5" long and about 21" wing span which is slightly oversized just for wing loading. Weight is right at 13 oz rtf, but without paint, so assume about an ounce more finished.

Update 12/21/12 Since the world didn't end yet, i had enough time to paint the Delta X-15 and do the markings. Came right out at exactly 14 oz rtf. Pictures show it next to the X-15-2

Update 12/27 Good maident this morning. CG and throws were spot on as was glide trim, very nice!
Here is the cg calculator I used:

http://wingcgcalc.bruder.com.br/en_U...d6=0&sweep6=0&

Flight video:
X-15-3 Delta Configuration RC Rocket boosted glider (0 min 41 sec)

Frank
Posted by burkefj | Nov 13, 2012 @ 01:32 PM | 9,488 Views
I've updated my Bomarc plans to reflect the A or B model wing/ramjets. I redesigned the ramjets to not have an X form but just double of the side view and it looks like it will work fine and weigh the same. I think it makes a cleaner look. I built this one as an A model with the wing and pods moved back and AUW rtf is 11.3 oz with an E-6RC motor.

Doing the ramjets by doubling them allowed me to round them more and it gives a better shape, I think.

I did the markings on the pieces/painting first before assembly and was very careful with the CA when applying to avoid running the marker lines. I used model master "titanium" for the ramjet rear ends, and some Q-tip shafts for the pitot/counterbalance probe thingys...

I used styrene sheet on each side of the fuse to support the rail buttons as well as give something solid to drill and glue to when attaching the ramjets.

I also added styrene strips to the bottom of the ramjets to help them survive landing rash as well as the underside of the nose, and used contact cement(uhu por) to attach it. I don't indicate that in the plans, if you land on trimmed grass it probably isn't necessary, but I already had the styrene on hand.

I did this one in a slightly different white color scheme I found with a black nose and use sharpie pens to do the panel lines/accents, sig stars and bars and vinyl letters from Office Max.

Build time was approx 8 hours including cutting plans, dry fitting, markings and finishing.

Test flight in 8 mph winds was good, boost was vertical, just a bit of weather cocking at the end of the boost that was easily adjusted back to vertical. Glide setting was fine. This is using the same relative CG position (relative to the wing LE where it hits the top view fuse profile) as the B model. IE mark the wing as shown on the plans for CG, move the wing back to the A model position and the same CG markings will apply.

Plans are updated on the plans page.

Frank
Posted by burkefj | Nov 07, 2012 @ 05:09 PM | 10,724 Views
I was on a business trip and was able to stop by the White sands missile range and the alamogordo space museum. I have to say that seeing a bunch of those rockets and missiles I have built models of was really exciting. I was able to actually touch a Pershing and Bomarc Missile The Talos is a huge missile. Hopefully you will enjoy the closeup shots. They had their V-2 refurbished and it is one of the most complete V-2's in existance. They had it made into a cutaway so you can see the internal structure and tanks, etc. They had some of the V-2 skin left over and were selling it mounted on a base, so I bought some real german December of 1944 V-2 skin I'm such a dork. Really, I'd encourage anyone in the area to go to the white sands missile park, it was outstanding.

...Continue Reading