benjamin presten's blog View Details
Posted by benjamin presten | Dec 24, 2015 @ 01:14 AM | 2,633 Views
As many people know, there is a limited amount of curve you can get out of a piece of foam with paper on it. You can peel the paper off of one side of the foam which allows you to curve it more but you can still only curve it in one direction, so you can't taper the fuselage. There are some ways around this like cutting slots or heating the foam but both of them take lots of effort. This reduces the amount of subject airplanes significantly because it is so hard to make round fuselages. Well there is many airplanes with round fuselages that I have long wanted to model. So the way that I and many other people have found around this is to make a profile fuselage, but this makes a very thin fuselage that can be less than good looking. So if you make the profile fuselage into a box you still get the thickness of a round fuselage but not the complexity of it. So I decided to try it out on an airplane that I thought would be really easy, a Lavochkin La-7. It did turn out to be easy to build but it was also a learning experience. I started with a three view then picked the size I wanted which I thought would be about 38 inches. It turned out to be a little smaller than I wanted but I had to build it to find that out. Anyway, I built the whole airplane off of the 3-view. It flies pretty great and it was easy enough to build while still following the lines of the airplane well enough. So because the airplane was too small and everything else worked good, I decided to try it again on...Continue Reading
Posted by benjamin presten | Sep 30, 2015 @ 11:00 PM | 2,929 Views
Sorry all of this writing is copied and pasted together from things I have posted together.

I will update this page every time I made an advancement in the project

Update 12/31/15

In the past couple of days I have worked on the tenth prototype. As usual I changed a couple things in the new build. The top to sides of the hexagonal fuselage have been eliminated and replaced with one flat side. I widened the booms to be 32" apart for extended flap and elevator area. I also added a fixed shocked gear that I built. Lastly, I added a cuff to the end of each flap that seals the end of the flap off against the booms. The seem to significantly increase the effectiveness of the flaps. All in all the airplane flies awesome and I look forward to continuing my testing with it.


Update 10/13/15

I put a sixty inch diameter parachute purchased from Aerocon Systems on the airplane. It is mounted on the fuselage, slightly forward of the wing. It is attached to the airplane with a set of bungees that are wrapped around the spar of the wing. It is released via a servo and a rubber band. On the first few tests the parachute failed to open. I had wrapped the parachute to tightly for it to open properly. So I began to wrap it loosely. On about the fourth test the parachute opened successfully but it took a little to long to open and because of that it had the opportunity to slide across the top of the wing and fall between the booms and under the elevator. when it did open the
...Continue Reading
Posted by benjamin presten | Sep 21, 2015 @ 06:24 PM | 3,182 Views
Here is the Super STOL airplane that I designed and built out of DTFB. It is made out of DTFB and has a sixty inch wingspan. It is a lot of fun to fly.

Flying it like I STOL it. (1 min 48 sec)


STOL Bloopers (1 min 38 sec)
...Continue Reading
Posted by benjamin presten | Sep 09, 2015 @ 10:40 PM | 3,097 Views
yup mostly using this as a method to get the picture on the internet so I don't lose the picture.
Posted by benjamin presten | May 23, 2015 @ 10:56 PM | 3,288 Views
I was given this Pitts by a friend who built it 25 years ago. It was powered with a 15 size glow engine. It was only flown once because of how under powered it was. It was built off of Marutaka plans (and it took me a lot of research to figure that out) and possibly a kit, I don't really know but there isn't any stamping on the parts that suggests it was a kit.
When I got it it was very heavy and with a wingspan of only 31 inches so it had extremely high wing loading. I made an effort to make the airplane as light and powerful as possible but on a budget. I stripped the airplane of all of it's electronics and replaced them all. The servos are parkzone metal gears with the exception of the aileron servo which is an old standard size servo I had laying around. The reason that I used a full sized servo for the ailerons is because the hole was cut out that big and I didn't want to do a bunch of wood work to make it smaller. I powered it with a Detrum 3720 650Kv brushless outrunner with a 13X6 prop. The ESC was a Detrum 50A and the battery was a 1300mAh 3S.
The airplane flew fairly well with this setup but it was still a little less power than I wanted. However the wing loading had gotten low enough that it didn't have to make a smoking hot landing. So I replaced the motor with a Turnigy 3542/4 1450Kv outrunner using the same 13X6 prop 1300mAh 3s and a Castle 60A ESC. Just recently I bought some 1000mAh 4S batteries that are roughly the same size and weight as the...Continue Reading
Posted by benjamin presten | Jan 08, 2015 @ 11:17 PM | 4,549 Views
I built this Gee Bee Model D last night. I have just a little more work to do to the bottom of the nose but otherwise it is done. It has a wingspan of just over thirty inches and it is about 30 inches long. It has a Turnigy XP 3530/14 motor, 10X6 prop, with a Turnigy 30A ESC and a 1000mah 4S battery. I was going to test fly it tonight but it is going to have to wait for a couple of months because it turns out that my transmitter is broken and as I am in high school and I don't have a job I can't afford a new transmitter.
Posted by benjamin presten | Dec 24, 2014 @ 11:26 PM | 4,652 Views
release the kraken
Posted by benjamin presten | Nov 06, 2014 @ 09:51 PM | 5,217 Views
I spent two nights building this airplane it is the version three of my sixty inch twin boom. I have also done three thirty inch versions. It has a mixture of a Armin wing and a FliteTest wing. It is designed to carry a GoPro and still have extreme performance.

Twin Boom Tail 60 inch V3 flight. (5 min 1 sec)

Posted by benjamin presten | Sep 14, 2014 @ 02:05 AM | 4,835 Views
The video is not of of the greatest quality but it shows what the airplane is capable of and how much fun I was having!!!!

Scratchbuilt funcub aerobatics (2 min 34 sec)

Posted by benjamin presten | Sep 13, 2014 @ 01:47 AM | 4,506 Views
I have built a flitetest simple storch and a Foamcub swappable now the fun/foamcub has been flow several times now but the storch remains electronic-less. I don't have pictures of the funcub but it looks astoundingly like a funcub.
Posted by benjamin presten | Sep 13, 2014 @ 01:44 AM | 4,445 Views
I finished flew and destroyed the bücker now but I got about 25 hours of flight time on it.
Posted by benjamin presten | Aug 28, 2014 @ 02:32 AM | 5,398 Views
I am just finishing up my Bücker Student Swappable model designed by nernic. I am hoping to have a maiden done by Friday or Saturday.
Posted by benjamin presten | Aug 27, 2014 @ 10:30 AM | 4,399 Views
Today is a sad, sad day as today I lost my beloved friend, Hyperion Yak 55SP. After a 35 turn tumble the right wing folded over and no matter how hard I tried it just didn't have enough aileron to hold a knife edge. When I arrived at the scene it was a grisly sight, there was blood (plywood and balsa) everywhere, the heart was still beating (ESC and it was actually beeping not beating) and the head (motor, firewall and cowling) was severed completely. As you can see in the picture I was devastated.
Posted by benjamin presten | Mar 27, 2014 @ 11:24 AM | 5,020 Views
I couldn't help but pust this picture of my families Piper Clipper. It is my favorite picture of it and I was looking at it and I decided to post it. The picture was taken by Roger Cain
Posted by benjamin presten | Mar 26, 2014 @ 07:52 PM | 5,524 Views
Title kind of explains it all