phil alvirez's blog View Details
Posted by phil alvirez | Jan 12, 2011 @ 09:39 AM | 11,521 Views
as this blog is getting too long, i better keep adding here on top what's new. easier to see it. thanks for your interest.

jan 15
am starting a thread on 'motors for ultra micro models with 6400 brick'. give a look to it and bring your comments and contribution

january 12, 2011
Classic Elf 20" (stick-n-tissue)
100 sq in, 50 grams auw, for 4s/suk components.
i spent the past 5 weeks working as hard as i could, re-designing the structure of the Elf 20" for balsa stick and tissue, building it, and just finished it. i have been doing foamies for the past who-knows-how-long, and finally went back to balsa. i decided to have 2 planes based on same design, same basic dimensions, 1 foam, the other balsa, and compare them.
so far, what i have to say is that, as we could expect, foamies build way faster, don't require as much skills or precision; take more punishment, and are easier to repair. what i was not expecting is that foamies are lighter than balsa planes, even stick and tissue: the foam Elf 20 weighs 42 grams auw, and the balsa 50. now, i still have to fly them, to learn what the difference in flight is, although that has to be indoor at the time, and in a hurry, because the boys at the gym only let light stuff for a few minutes.(update: maiden flight: see the thread at indoor and micro models-link below)
>>here are some details of the build: airframe: same wing planform (20"x5...Continue Reading
Posted by phil alvirez | Jan 04, 2011 @ 05:34 PM | 11,123 Views
jan 4/2011
when i returned to r/c, after some 9 years (i was doing painting, oil on canvas), first i reactivated my 2 elfs, the 36" and the 48", with the new technology. as i realized that i could make smaller airplanes, i got 1 park 250 motor and designed another plane for it (gremlin), and then heard that there was going to be an even smaller motor (park 180), so i designed an airplane for it. it was the Talisman. guessing the power, it came as a 24"ws, 6" chord (144sqin),weighing 140 gr. it was even better than my wildest spectations. with it i began an extensive program evaluating turbulators, with 2 identical wings, 1 of them with turbs and the other without. i measured speed with both, and you will find more at 'my goal...'. it was an exhilarating experience to see that all the work by Schmitz confirmed what i had been living for many years. there is more data on the talisman below, but it has been evolving through the time. i tried another wing with higher aspect ratio and sharper leading edge, first without, then with turbs, then added fixed flaps to increase area and slow it down-the turbs made it too fast for my taste (and for catching it).
then came the variations with pusher configuration. i will add that under the Talisman, at 'my goal is...' look for the notice in here when i do that.
Posted by phil alvirez | Nov 11, 2010 @ 04:34 PM | 12,562 Views
this version still handles same motor/6400 brick and cells as the original 18" and the 20" winspan versions. even slower and easier to catch. indoor and no-wind backyard trainer or sport flyer. 48 grams auw. 110 to 160mah cells give me from 5 to 7 minutes flights, even in this cold weather.
with this model and the 20" i mounted the motors with screws for easy exchange, be for testing the other motors, or in case 1 has to be replaced (none so far). i started a thread with details in it, and on the 20" version there are some photos.
as the Elf 20" is painted same way, i added a blue strip to this 1, so i don't get mixed-up.
so far, i can not tell you that 1 version is better than the others. it depends of where and when you fly. for indoor, the '22' is slower, and still with plenty of umph, and does great out there with no wind. the '20' handles a little bit of wind-a breeze, you must say-and does fine indoors, too. the '18' takes some wind, but still does well indoor, although faster.
now, thanks to the help of a friend, we may be able to have CAD drawings and full scale and letter tiled PDF of all these 18/20/22 elves. stay tuned.
the link for more details is here:
Posted by phil alvirez | Nov 11, 2010 @ 04:22 PM | 12,175 Views
This is an enlarged version of the standard 18", with 25% more area and about 5% more weight. it flies a little bit slower. uses same 8.5 motors, 6400 brick, and cells. more details on its thread.
the shots are at the local gym. take-off, catching, touch-n-go's, fun! i hope i'll bring some videos soon.
the 1 with red/orange strips has the same motor and prop used on the original sukhoi (clear end bell motor) and 160/70 prop, and the 1 with yellow/orange strips has solo pro motor (gray end bell), and 130/70 prop. this is supposed to last longer. both have motors mounted with screws to make them easy to exchange. i will add comments here:
Posted by phil alvirez | Aug 25, 2010 @ 02:16 PM | 14,668 Views
My New ELF
backyard trainer/sport, 18" wingspan, champ or 6400 brick, sukhoi motor/prop/mount, 80 sq in wing area, 36.7 grams auw, for calm weather or indoor. more details on the thread at indoor and micro models. and it flies like an Elf: i mean, like my other elves. i call it 'radio assisted free flight'.
the orange/blue is the prototype (motor/prop same as sukhoi), and the yellow/orange/green is the standard as shown on the plans (motor/prop same as p51), just longer fuselage than the prototype. the idea is to let the cell be at the cg so it can be replaced with other sizes without altering the balance.

dec 23: the plans CAD full size and letter tiled PDF are at the thread at indoor and micro models, post 28:
Posted by phil alvirez | Jun 03, 2010 @ 05:35 PM | 15,117 Views

4 august
at the end of 'steps'

25 july
comparisons on turbulators and steps
see below at the end of 'my goal...

11 july
see below at the end of 'me and my planes'

14 june 2010
a dream?
Elmira-soaring capital of america
1- introduction
since i remember, to watch an airplane, or to hear the sound of an airplane's engine, instantly carried me to fantasyland, to the world of the incredible, and when i discovered model airplanes, be rubber powered or gliders (later, with engines too), it was madness. i always felt (even to this day) as if i were the plane myself; enjoyed the sensation of finding myself up there, floating among the clouds.. and every plane i have ever flown, through all my life, has been the same.
many years later, i added to those experiences flying radio controlled sailplanes, with which 1 controls the flight, and therefore the sensation of being up there (and getting into thermals!) is even more real.
and when i flew full size airplanes, i added another experience, although different. the sound of the engine and the vibration took off some of the magic. I daydreamed of full size sailplanes, of which i read everything i could: Otto Lilienthal, the Wright brothers, the germans after WW I with their sailplanes, that remained airborne magically with no engine (later, it was learned what thermals and uphill drafts were). the famous 'sailing' flight, like sailboats, in the air, kept up by the force of the wind alone,...Continue Reading
Posted by phil alvirez | Apr 26, 2010 @ 02:49 PM | 15,650 Views
more on 'this is my story'
chapter II
My first (paper) flying model airplanes.
When I was five, suddenly everything changed.
Once, I lost track of my father. I learned about his death one year later, but the grownups did not tell me- they did not want me to know at the time. But sure I missed him a lot! Shortly after that, my motherís father died too (there was a war at the time: they called it world war 2), and my grandmother came to live with us, and my mother went to work all day long.

Some time later, an uncle taut me how to make paper planes that could fly. That was a revelation! I made planes with any piece of paper that I could get and, as we moved to the second floor of an apartments house and I was not allowed to get down to the street, I made each plane the best I could, trimmed it for a nice turn glide at the living room, and launched from the balcony to watch it gliding down for one single flight. And back to build another one.
That same uncle also gave me a nicely cast airplane painted aluminum. The casting and the details were terrific, but I never liked the shape. Anyway, I played a lot with it. It had some strange digits: NX 211. Years later I learned that the full size was the first plane to cross the Atlantic. Yes, it was a model of The Spirit of St. Louis.

chapter III
My first model airplane (the first balsa, flying model airplane i ever saw)
Then one day, my uncle brought to me...Continue Reading
Posted by phil alvirez | Nov 09, 2009 @ 03:13 PM | 17,745 Views
This is my story.

Chapter I
The beginning
Even since I remember, I have been fascinated with everything that flies, man made or not.
On several occasions through my life, fate placed my home on the approach pattern of airplanes. Even from the start. So my first memories are about airplanes (biplanes, to be exact), that occasionally flew over my home.
If I was in my cradle, whenever I heard the peculiar sound of those radial engines, I began to call my mother to take me out to watch them. Even before I could walk.
Years later my mother told me that one day, while I was in my cradle and heard the sound of engines approaching, I decided to come down by myself and go and watch them, so I managed to climb down and started walking towards the door but, as I never did that alone, I began to lean forward and to compensate began to walk faster and faster, until I reached the door to the patio in full run and went through. The thing was, that there were three steps to the patio and I fell and began to cry, until my mother came and picked me up. By then the planes were flying overhead and immediately I stopped crying and watched the planes in awe until they disappeared. And that fascination has never faded away.
I had all the toy planes that I could find at the store, although there were not many at the time and no one was intended for flying. So I never saw a model plane that could fly.
As soon as I could handle a pencil, I began drawing planes. Years later, at school, my copybooks were full of sketches of planes all around the text, and my teachers were unable to make me stop. Then I discovered plasticine and began modeling all kinds of planes. Whatever I saw in magazines, newspapers, had to be modeled, copied and redrawn in all possible angles. Those were happy times!
My grand mother even used to tell the neighbors that I had my head full of airplanes.
Posted by phil alvirez | Oct 13, 2009 @ 02:21 PM | 18,519 Views
3 june 2010: am adding 2 shots: 1 of my most recent stick-and-tissue (well, it is plastic covering that looks like tissue), and another of 1 of my greatest experiences of my life. more details follow.
These shots are of me and some of my models. The place where i fly is a grass field, managed by the Sun Parlor Club of Windsor, Ontario, Canada, and is at about 30 minutes from home and the border to Detroit. I fly electrics only, at dawn, summer or winter, as long as there is no wind, or just a breeze. The plane that am holding is the Elf 1E, of 48" span, about 14 oz (400gr), with a Scorpion 28mm OD motor. The planes behind me are the 36" Elf by my shoulder,with a 22mm motor, the 48" Elf, and a 4ch, 32" low winger that I called the Gremlin, powered by a Park 250. The next photo shows the Talisman (yellow wing and tail), 24", 5oz, Park 180, and next photo is the Tramontano (red wing and tail), 30", 8oz (240gr), with a 22mm motor and folding prop.
5 june 2010: the plane with the red fuselage is the Aurora Boreal, 24"ws, my most recent design for stick-and-tissue style. it is basically a nostalgia free flight design, with radio gear. the challenge here was to try to develop an airplane with deep undercambered airfoil, that could manage wind-and it succeeded. the airfoil is 10% with 5% camber, sharp leading edge,and is very stable even in wind, and is fast (to my standards), with a flat glide.
about the photo of me in a full size...Continue Reading
Posted by phil alvirez | Mar 07, 2009 @ 12:13 PM | 19,915 Views

17 mar 2018
thinking is a privilege that God graciously gives us to enjoy.
sadly, only a few make use of it.

22 feb 2017
the learning curve: there are no failures: when something does not work, you learn that. it is not that you failed. it is 1 thing that does not work. thats all. you are learning! now that you learned it doesnt, try again in a different way. until it works. in other words: life is a series of attemps to get something. until you do.

17 jan 2017
Luck is a Lady who smiles only upon those few who know how to make her smile
-Hans Seile-

26 aug 2016
life is not a 100 meters race: it is a marathon!

26 aug 2016
winner is not that who wins a game or a race.
winner is that who never gets discouraged.

23 feb 2016
life is 1 of the things that wear out-even if you don't use it

22 jan 2016
through all my life, i always have been amazed of the tremendous effort humans put trying to make my life miserable.
and how miserably they have failed!

11 jan 2016
tomorrow begins today

2 dec 2015
we will be disapointed if we fail;
but we will be doomed if we don't try.

8 nov 2015
we will never be able to reach the right conclusion if we judge by exceptions

10 sep 2015
giants have their heads in the clouds
and their feet on the ground

10 sep 2015
just a thought:
thanks for the fire inside me‏
thanks God for giving me...Continue Reading