herreraa's blog View Details
Posted by herreraa | Aug 25, 2021 @ 10:57 AM | 10,570 Views
El Lajban from Bo Gardstad

I found this plan in aerofred. It is a very popular trainner planin in Sweden. Mr Gardstad passed this year in July 2021. Here web site with all this work. http://www.gardstad.se/. He has several other desing but plans need to be purchased and they only send paper copies. I will try to build more designs from him.

Articles free download at : http://www.xn--modellvnner-r8a.se/
-2010-5
-2009-5
-2005-5
-2002-6


Wing: 39in ( measured with polyhedral, the extended length in the plans is 44in)
Lenght: 33.5
weight: 532grams ( heavier that the design due to materials used)
Motor: A2212/10T 1400kv ( ebay)
ESC: 20amps
Batteries: i use 3S 1500 mAh and 3S 850mAh, i have between 20 to 25 minutes of flight time.
Servos: 2x 9grams

Materials: poplar wood from home depot, foam board without paper, playwood from Hobby lobby .

Wing Polyhedral angle: 17 degrees. (this information was provided by Swedish vendor that sells the plans and is not included in the Aerofred plans)

I have installed and old iphone (127grams) to record video , camera is too big and heavy but i was able to records some video clips...the first attempt end up in crash. Plane is very strong strong and i just broke a propeller. However in a earlier crash i bent a shaft of the motor so i had to replace it but damage to the wood structure.

I am currently looking for a small camera.

Here video:
El Lajban RC plane (5 min 49 sec)
...Continue Reading
Posted by herreraa | May 29, 2021 @ 09:57 AM | 24,947 Views
Finally i was able to fly my Savage Bobber today. It has been a plane that i wanted to builf for a very long time. It stated to research for plans, there was none until in found a Faceb00k group that has development based on the few sketchs available in the internet.
The original plans call for a 1.2 meters plane but i just reduced the size for a 960mm wing span.

-Maiden flight= I put too much rated on aileron and friend helping me to trim it could not control it and crashed. See photo.
-2nd maiden= I incorrectly tried to trim it on taxing onthe ground, i added too much lef trim and crashed, see video.
-3rd test= I added to much down trim to the motor , plus i did not align in newtral position the elevator , it had like 6mm down trust. Eventually fly but when i test it , it was too much wind and turbulence and crased for the third time.
-4rth test= Finally fixed again and ajust the horizontal stab. It was late afternoon , a storm was forecast but i had a little window of low wind. It flies.......i just ned to improve among many other things... my landing.

It it a fast plane for my skill , i will try to reduce speed by moving from 3s to 2s and use another prop.

The structure was made on 1/8 basswood.
Wing span 960mm
weight 350gram with out battery
chord 160mm
Airfoil KFM 2 using MPF foam 6mm
wing has flaps
Motor= suppo 2208/12 1800kv
Battery= lipo 800mah 3S

Video second crash:
Savage Bobber second maiden flight and crash (0 min 55 sec)

Video third try:
Savage
...Continue Reading
Posted by herreraa | Oct 28, 2020 @ 08:29 AM | 11,811 Views
Finally compleated the mini Frog. The receiver (Mx-RX62H)brick detached after first day of maiden , when i was regluing it , glue got into the gear and the servos do not work anymore. I had a replacement ( a receiver from a Blade heli mxc2) , i did not i neded to disable the gyro, so after looking for help (thread)in the forum i was able to do it. I have not done any flight with the new brick yet.



Mini Frog Maiden Flight Front yard RC plane scratch built (2 min 15 sec)

Posted by herreraa | Aug 12, 2020 @ 11:21 PM | 10,310 Views
This is my new built a modified 40% Slowly V2. The previous was fun but motor did not like to many crashes so i build a modified version training inspired by the Micron wings Student Flyer.

Wings and landing gear were reused from previous Slowly. I added some CF reinforcement at the front . I used dollar tree foams and plate foam.

Here a video:
Front yard RC plane -Modified Slowly V2 (40%) - 8 Year old Pilot (1 min 36 sec)

Posted by herreraa | Aug 01, 2020 @ 09:08 PM | 8,123 Views
Here my first mini rc plane . It is my favorite Slowly V2.
I started with a 40% so I can use some E7 mootors.

My son is the pilot, i had few chances to fly it mtself . He likes loops . I prefer some slow flight , easy to build and using dollar tree foam available.

This is a real fun plane, but as a trainer is not the best , we had a shaft bended , can fly but i am currently looking for another 30grams plane with protected motor.

Final weight : 36 grams
ws:14in
lenght: 14in
Motor:EPS_7
Motor Specifications:
Type: Brushed
Dimension: 16 x 7mm
Shaft Length: 5mm
Shaft Diameter: 1mm
Weight: 3.3g
Max current: 1.8A
RPM: 3V/40,000rpm at no load
Suggested prop: GWS 4530

Test data;
Prop: GWS 5030
Voltage: 3.3, 3.8, 4V
Current: 0.76, 0.89, 0.93A
Watts: 2.508, 3.382, 3.72W
Thrust: 31, 36, 38g
Efficiency (g/w): 12.36, 10.64, 10.22

Prop: GWS 4530
Voltage: 3.8, 4V
Current: 0.81, 0.87A
Watts: 3.078, 3.48W
Thrust: 32, 35g
Efficiency (g/w): 10.40, 10.06


Propeller used : 5030
Receiver: MX-Rx62H
Transmitter: Jumper T8SG

Slowly V2 40% RC airplane (2 min 25 sec)

Posted by herreraa | Jul 17, 2020 @ 12:10 AM | 9,570 Views
I have some trouble trimming my last plane and i keep crashing. I was trying my son to enjoy too but crashing is not fun . So i was looking for a pusher easy to build and hopefully easy to trim and fly.

I found The Frog from Daniel J. Schwartz, the kit is no longer in the market. I wanted to try a technique of using soild foam body in stead of layer like this design. Page 52 post #780 has the latest design (2011)
https://www.rcgroups.com/forums/show...2#post16407103

https://www.rcgroups.com/forums/show...highlight=frog
https://www.rcgroups.com/forums/show...y-Frog-(Part-2)

The Frog with an 8y old pilot (8 min 33 sec)


I found 1/2in pink foam at home depot . I had to buy a foam cutter, it is not difficult but you need to time to get use to the tools. I wanted to build a foam cutting table soon.

My goal is to have a compleate plane with all electronics at less of equal than 200 grams (7oz), so could use a 20gram motor that is have availlable. I read in some thread that your motor weight should be around 10% of the weight of the plane. The design ask for a weight of 200g to 255g (7oz to 9oz).

Update: final weight after a reinforced wing= 211grams.


Body=41 grams
Tale controls (with foam) 7 grams)
wings=23 grams



White foam is from Dollar tree store (5mm without paper)

Here some pictured of my pink version....The green one is form the designer.

Total weight so far about 71grams (2.5oz).


total 48grams - Electronics planned:
...Continue Reading
Posted by herreraa | Jun 01, 2020 @ 08:09 PM | 12,645 Views
Finally starting my Jupiter Duck after 3 year i saw for the first time. Materials arrived today and they weight about 69grams. The come from Hoosier Coutout Service. I also ordered a Slowly V2 36in. My son ( 8 year ) wanted to Duck i started with that .

Some of the question i need to answer, i just put it in a list so i remember:
-Aprox final weight (without electronics)
-What motor should i use if i do not have a weight. I will still go with the recomendations from the designer or something clos.
-Where to buy the electronics in a kit or combo, motor/esc/servos/batery. I am new on RC and prefer to learn how to solder on other plane.
-What paint to use that do not affet weght too much...i want orange and yellow...but i need to defind that before start learning.
-Define best way to have a removable wing , i want to have access to electronics.
-Define if battery needs to go in a lower position. if so i need to redo the plans.

It will be fun.
Posted by herreraa | Jun 10, 2018 @ 10:03 PM | 6,836 Views
This is the Kroppsflygar'n other plan from Ronas Romblad. (Inspired in the Pussycat, credits on the plans (but not in English)).
Not videos yet,
Posted by herreraa | Jun 10, 2018 @ 09:54 PM | 6,972 Views
This is the ikara butterfly foam versio but it does not fly as i want.

Ikara Butterfly - foam version (0 min 4 sec)

Posted by herreraa | Jun 10, 2018 @ 09:36 PM | 7,045 Views
This is Sweden design easy to build a fantastic plane. Design by Jonas Romblad. I lost this plane in the lights of an indoor church were i was invited few weeks ago.

Lillflygarn indoor plane (from Jonas Romblad) Saalflug (0 min 31 sec)

Posted by herreraa | Jun 10, 2018 @ 09:33 PM | 6,723 Views
This is plane that has a design and i have purchased the parts from Japan to fly . Details in the video:
Foam Wagomu plane (0 min 33 sec)

Posted by herreraa | Jun 10, 2018 @ 09:28 PM | 6,743 Views
The Peck ROG was my second plane . This time i chose something easy to build.
Here a video:
Peck R.O.G flying rubber plane model - First Flight (0 min 21 sec)

Posted by herreraa | Jun 10, 2018 @ 09:23 PM | 6,730 Views
In October 2017 i started to learn building indoor planes. My first plane was The Fly. I had to build two because the first one never climbed.
Here some videos .
Second build
The Fly indoor flying model airplane - 2nd build (0 min 37 sec)



First build
The Fly indoor flying model airplane (0 min 12 sec)
...Continue Reading