View Full Version : Convair XFY-1 (Pogo)
Ed Couch
Nov 16, 2003, 08:22 PM
Stated earlier in year while working on Wright Flyer #3 that I had a Tailsitter on the back burner. After working all the buggs out of the little Wright Flyer I finally found the time to work up the Convair Pogo. Test flights were this afternoon and all went well with the third flight being a vertical takeoff into forward flight and almost successful landing, fell over on touchdown but nothing was hurt. Come off power a little to fast, just need a little work on the pilot side of house. Aircraft C/G needs to be moved further aft before next sortie. Specifications are as follows:
Wingspan: 25 inches
Vertical fins: 22 inches
Length: 30 inches
Weight: 12 ounces with 3/1200 lite pollies
Motor: GWS 300/D drive
ESC: Great Planes 10 Amp
Servos: 4 (2 Hitec 55s/2 Cirrus 6.2s)
Receiver: GWS
Transmitter: Futaba 8 channel
Contruction: Blue foam/1/64th Plywood
Paint: Silver/Black, Spray can from Micheals Art/Crafts (for painting flowers)
Spinner: Custom built (1/32 Plywood) like ones used on Roadkills Series Models
Lots of hours to go before I can get the landings down right but model is not a bad flyer and transistions to hover with next to no inputs from me. Nice.
Ed Couch
Nov 16, 2003, 08:24 PM
Picture two shows other side. Will get flying shots as soon as I can, hopefully sometimes this week. Lost voice two days ago and this is about only way to communicate. First flight took place at the Ft Worth Convention Center prior to Brahmas Hockey game.
kgmorris
Nov 16, 2003, 10:07 PM
Ed,
Great looking Pogo! must see it fly.
Fly Low and Slow
Ken
Bob H
Nov 16, 2003, 10:14 PM
Ed,
Great looking Pogo! You ALWAYS come up with the most interesting models! Any plans available?
Bob H
Ed Couch
Nov 16, 2003, 10:53 PM
No plans for immediate future, maybe we can do something after design proven out. Right now I'm tickled the dang thing even flew and its the best dang profile in flight I've seen in a long time. Flies slightly nose high with big fan turning. Need someone to do Lockheeds Salamander next though. ed
Fred Sanford
Nov 17, 2003, 10:44 AM
Ed,
Fantastic job! You're the man! Hope you'll consider a "builders plan" for us.
Fred
oforberg
Nov 17, 2003, 03:28 PM
Outstanding job.....what are your control surface setups?
Ed Couch
Nov 17, 2003, 03:44 PM
Control surfaces are as follows: Rudder top and bottom are dual servos (one for each surface) giving normal rudders setup. Negative 60 percent on the expodential, 120 percent throw (about 40 degrees deflection) and 80 percent set up on dual rate (low). Elevons are about the same on throws and expodentials, elevator throws are about 100 percent on the radio. Flying maximum elevator throw and slowed the ailerons to 80 percent roll for first few flights. Bird extremely nose heavy, second flight battery moved several inchs aft but more is needed. Too much up elevator in at this time to hold level hands off so moving C/G a little further aft for next flights when I can find time. ed
Ed Couch
Nov 17, 2003, 04:39 PM
Servos, ESC, receiver layout. Control rods are carbon fiber .07 rod with wire Z-bends and shrink tubing. Tye wraps used to tidy thing up a little.
Ed Couch
Nov 17, 2003, 04:40 PM
Shots got reversed but nobody is perfect least of all me. This may be a little better.
Ed Couch
Nov 17, 2003, 04:45 PM
Last shot is of castor style landing gear. Flexible rod housing fit exactly into 1/8th inch carbon tubing. Wheel is 1/2 Dubro Mini with castor bent from wire that just fit into inner flex sleeve. Held together by piece of flex sleeve glued to wire on opposite end from caster and wheel. Whole assembly glued into 1/8th rod at required depth. Gear castor very nicely. Thats about all there is to it. ed :D
Alfredo Rubio
Nov 17, 2003, 05:27 PM
Ed..... this is a scale 3D plane!!!!!!!!!!!! very nice project, I really hope to see in the next future a vertical take off and transition to level flight!!!!!!!!!!! I like very much your plane, congratrulations, a very original plane!!!!!!
Regards.
Ed Couch
Nov 17, 2003, 06:41 PM
Alfredo, don't think I will be doing much 3D work with it like you can with Garys and Mikes JARS, wing loading a lot higher but thats all ok never meant for it to be. Maybe a loop and roll every now and then. As with the Flyer the idea is to duplicate a little history and go on from there. But we will see once things get trimmed out and a dozen or so flights under her belt. Glad everyone is getting a kick out of it anyway. The smaller full bodied version with counter rotating props may be the one most would want to build but lets crawl before we run. I still need more flight time anyway as we all do. Have two more hockey games coming up this week so will get time at the Convention Center to work on hovering with a 120 foot ceiling where I do have a little recovery room when I fall over, plenty of room to fly out of problems.
Here is another little footnote on the Wright Flyer. Gary and I were flying the other night at the Center and I had the flyer with me so decided to launch on skids off the ice. About 25 or 30 foot into the takeoff run she lifted off the ice with no inputs from me and flew a good flight, did it again just for the heck of it. Got ya there Orville! ROI (Rise off ice) cool. ed :cool:
Alfredo Rubio
Nov 17, 2003, 11:14 PM
The ROI I am sure looks great!!!!!
wath is your WL? is the Flyer whos looks in the video launched by Gary????
I like your way, to re-creat history with air models:) good for you.
Regards.
Ed Couch
Nov 18, 2003, 09:01 AM
Alfredo, don't quite understand "WL"?
Gary and Mike have launched for me quite often with excellent results and both launched on the video at Lockheed/SWAC. Good folks and great pilots both. For these flights the little Flyer was placed on the ice and I went to max military (full throttle) and she headed out, steering was excellent with the rudder and she taxied back after landing. No big deal, did it with my ornithopter last year a few times and that was a hoot also. No friction makes for nice takeoffs.
Bob H
Nov 18, 2003, 05:24 PM
Ed,
Is the vertical fins just one layer of FFF or have you braced them some other way to take the landing loads on the Pogo?
Thanks
Bob H
Ed Couch
Nov 18, 2003, 05:45 PM
Bob, the fins are a single layer as noted but there is an 1/8th inch carbon tube inlaid about 1 inch up from the hinge line in the fins and wings. Also note the gear legs are also carbon tube with the castors inside of them. The tubes are connected with triangular 1/64 plywood plates on either side of point of contact of the tubes thusly tranmitting loads to the tubing. Dropped check proved out to about 2 feet which if I fall its my fault. Last flight the other night I slid backward too quick (came off the throttle) and she fell over, if I had only dropped a click or so on the throttle it may of stayed upright although there was a little forward speed at the point of contact. Bad throttle management on my part. Need a lot of practice becomming stable for landing. On the original it was quit touchy at that point as well. Also air vehicles C/G is still a little to far forward. Will continue evolution flight by flight. No hurry.
Alfredo Rubio
Nov 18, 2003, 09:56 PM
Yes!!!!! NIce to meet you Ed, I love this video when Gary launched your Wright.
I mean the Pogo's Wing Loading, because you wrotte the model is some heavy to make 3D flights. In gas powered models I did not know about calculates the wing loading, I learned this from my friend Jorge Fernandez and in electrics I always like to know about this datta, is a way to know how the model flies...or the more close to know, as another thought with the design.
Regards.
Ed Couch
Nov 19, 2003, 07:54 AM
Alfredo, don't have a clue as to the wing loading. Never pay much attention to it if the thing flies smooth and stable which it has so far. Will check it out this evening when I return to the house, at work now. Not to hard to figure just take a little time. ed
Alfredo Rubio
Nov 21, 2003, 12:21 PM
Thanks Ed, does the pogo could make tight turns? Because I only flew one delta, the Jedi Star Fighter, and to fly fine I did open and smoth turns, with the Batteries fresh charged I did some tight turns but in the rest of the flight I could not, this turns kill the speed and the model slow down; Patrick told me this is one characteristec in Deltas.
Regads.
Ed Couch
Nov 21, 2003, 06:36 PM
Works both ways quite well even though it is spinning a 12/6 prop. Due to the drag enduced by the flat plate of the wing most simple deltas will slow down fast when they go to a high alpha and this is also true to standard airfoiled deltas. We normally use pure brut force to pull us around and don't think too much of it because we are slow fly type aircraft. The aircraft is designed to work in a high aplha state so it will be pure power that pulls thing along. Flying characterstics are ok, wish wing loading was down a couple of ounces but can live with this. Was planning on flying some this week but the doctors put me in bed with pneumonia for at least next week so my flying is over for the next week or so.
MichaelConnally
Nov 22, 2003, 12:30 PM
Very nice Ed!
Can't wait to see it fly.
Mike
Ed Couch
Nov 22, 2003, 04:21 PM
Thanks Mike, I need somebody to do the hover work for me. Hope you were able to make it at LMRA. Beats hell out of being in bed when I could be out flying. Voice still gone and still tired all the time. Hope this gets better soon. See Ya. ed
tashley
Nov 23, 2003, 07:54 PM
Ed, I see you've been bitten by this foam/electric thing too. Who would have thought something so simple could be so much fun. I guess the last time I saw you was at the ARCA's ducted fan meet in Austin back in the eighties and you were campaigning an A-10. Hope you get better soon.
Tom
Ed Couch
Nov 24, 2003, 04:12 AM
Tom, after all the years (28) flying fans and master scale it got to where it was no fun anymore. The indoor electric and parkflyers put the fun back in flying. The cost is relative minimal and you can let the creative juices flow without worrying about the next house or car payment being late. I loved and always will like my jets and the big A10, F84 and others are still here but collecting dust. I just went back to basics and its a whole lot more fun. The Pogo is my first in blue foam as I normally work in carbon fibre or balsa. I've built so many aircraft in the last five years that I can't even start to remember what they are and thats a far cry from one a year at best with my jets. Whatever, its a beautiful way to spend a little down time. And thank you, I'm feeling a lot better over the last few days except I still can't talk, I think the wife kinds of enjoys that and the grandkids are still laughing. ed
tashley
Nov 24, 2003, 07:41 AM
Ed, will you be sharing the plans for the Pogo? That really looks like a fun ship. My first endeavor in the flat Depron foam realm is a 3DX, my avatar, and it's been a blast. Originally I opted for the inexpensive route with a GWS 350 brushed motor, but after burning out the first two running on 3s 1200 mAh e-techs I'll be doing the brushless thing soon, probably a Himax.
Tom
houfek
Nov 24, 2003, 09:59 AM
Ed.....
Incredible work......and a fun one to bring to the modeling world. The Paul Garber facility (Smithsonian's restoration facility) out in Suitland, MD had one in one of their hangers....those are supposed to be moved to the new place at Dulles by next month......it has always been a favorite of mine since I built a plastic Revell kit of it WAY too many years ago !!
Now if you can get it with the counter-rotating props, I will be REALLY impressed !!!
Hope you are feeling better......
Happy Turkey....
Jim
Ed Couch
Nov 24, 2003, 10:44 AM
As for plans, lets get the bird working first as a second bird will be required to work out any future plans. As some of you know I love to fly unique aircraft and never really attempt to publish as its for my enjoyment, personal pleasure, nothing more. Bob Wilder is working up a counter rotating GWS system for me for a smaller full bodied version of the bird in the near future so thats probably what would be released. Gary Jones and Mike Connally have profected the tail sitter in the JAR series of birds so the Pogo is basically the same idea put into a scale profile configuration. I cheated and waited for someone else to figure out the problems before I jumped in with the Pogo. The main problem is not the aircraft but the old fart behind the stick, I fly basic choppers once in a while, jets for 28 years, and about any thing that flies but never much cared for hovering 3D work so I have a learning curve to overcome. I'm still only three flights into the development so have a lot of work to do. Maybe I'll be able to put a few more flights on her this weekend if I can still get out. Been down sick since Monday week and I'm going about nuts piddling around the house. Looks like its supposed to get cold tonite so don't see much flying at all until Saturday. Home and don't feel like building, sucks!
ronin8451
Nov 24, 2003, 01:46 PM
Looks much better all rigged up , Ed ! We missed you on Friday, hope you get to feeling better.
Ed Couch
Nov 24, 2003, 04:05 PM
Ronin, hope to be kickin and screamin again soon. Here is a little point of history for myself and the Pogo. Way back in 1970 I was out of Avionics school (NAS Millington, Tenn) going to first posting at NAS Oceana Virginia and got there in January, was scheduled for several secondary schools preculiar to the F-4 B and J models VF-101 was flying at that time and had a couple of days off so I headed in to the Norfolk Naval Air Station to see what aircraft were out front of the admin building. Years before someone had told me the Pogo was a gate guard and danged if it wasn't. It was setting out front of the building with another aircraft of history the Truculant Turtle a PB2Y and across the street along the waterfront was an old Martin Seaplane. Needless to say I was in hog heaven for a long time. Used to visit all the Army, Navy and Air Force bases around the area to look at the various aircraft on parade. But the most exciting was the Pogo. Over the years I've worked on F-8s, A-7s, F-4B/Js, F-16s, F-111s, C-130Js and now the F-22. Been in the business since I was a Freshman in college and I'm 56 and still kickin and hopefully will retire with the F-35 in my pocket. :cool:
356Jim
Nov 25, 2003, 05:24 PM
Ed,
Good work on the Pogo. I remember making a scale plastic model of one when I was a kid, back in the '50's.
BTW, to really make it scale-like, you need the counterrotating props the original had !!!
Ooops, guess the GWS catalog doesn't have 'em.
kgmorris
Jan 25, 2004, 11:49 PM
Take off
kgmorris
Jan 25, 2004, 11:50 PM
try again
kgmorris
Jan 25, 2004, 11:55 PM
fly by
kgmorris
Jan 25, 2004, 11:56 PM
Landing
kgmorris
Jan 25, 2004, 11:57 PM
Eddy the pilot
Ed Couch
Jan 26, 2004, 03:31 AM
Folks, I can only thank Kenny for the pictures of the Pogo in flight. There are a few more that I'm sure will show up in near future. Got six or eight flights Sunday afternoon on bird with a few minor problems encountered on way but could never quite get the vertical landing down without falling over. Took another younger pilot with more experience in 3D work to get it down pat. Mike or freewilley to you folks took her off, made a number of passes and then into the vertical for landing with no problems. I got a lot more practice to do and built a little Poget as the guys were calling her Saturday to practice with. Uses a GSW E drive and comes in about 6.5 ounces and successfully pulled off a couple of VTOLs with it during the day. Will be practicing a bunch in near future cause the Pogo is in a class by itself and damned if it didn't work.
OK folks I made the Wright Flyer work and is old hat to fly. Got the Pogo going finally and it flies just fine, just needs this old dog to get a little more stick time in the vertical to work things out. What else is out there to play with, foam, balsa construction I really don't care. Ideas please!! Check Six, ed
sr71fan
Jan 26, 2004, 03:33 AM
AWESOME!!!!!! Way to go, Ed!!! Thanks for the pics, Ken.
Absolutely BEAUTYMOUS!!!!
:eek: :eek: :eek: :cool: :cool: :cool: :) :D :D :D
Gary
sr71fan
Jan 26, 2004, 03:46 AM
Way to go, Mike! Sorry I missed it.
Gary
tashley
Jan 26, 2004, 08:52 AM
That is very cool Ed! Absolutley Kick A$$!
Tom
ronin8451
Jan 26, 2004, 11:04 AM
You need to work on an Osprey next ! I am thinking of building a couple of the large CD-Rom motors like the one I was flying yesterday to try on an Osprey. I think with the lightweight of the motors and awesome output it would be possible, plus I have 2 counter-rotating 10x4.7 sf props that are itching to go on something. The Pogo and Poget looked great buzzing around, but your Ornithopter Bird was the absolute coolest! I heard it before I saw it and thought there was a pidgeon loose in the gym !
Rick
derk
Jan 26, 2004, 02:02 PM
Ed,
why not try to build that military personal aircrsft that has the two ducted fans on either side of the exposed pilot (can't thimk of the name)?
that way all the radio gear would be well below the motors and the thing looks like a simple build .
Derk
derk
Jan 26, 2004, 02:37 PM
i know it's a little out there but this thing would be one of the coolest things ever:D
Ed Couch
Jan 26, 2004, 04:42 PM
Rick, the idea of the Osprey looks doable and with the new breed of CD ROM motors should not be that much trouble especially seeing Jerries Mig-15 tear up the site yesterday. Got to get me one of those things!! I have a F-100 and Mig-15 ready for mod when I can.
Derk the vehicle I think you are talking about was a mid to late fifties flying jeep with two large fans fore and aft of the driver and crew compartment. Used vanes to direct the thurst for directional control. Looked at it earlier but doesn't have the appeal I'm looking for. The vehicle you show above is quite interesting, I would like to see some three views of that. Thanks so much for the ideas.
Will be posting a few shoots of the Poget later in week, flies well and will be a great help to me learning to stay upright on landing. Based off of Garies hover trainer and is something I can play with around the house when the winds are calm. Took about two hours to build and another couple to set up. Its all Garies fault anyway. After watching the JARs flying about its started the seed of thought for the POGO. ed
Alfredo Rubio
Jan 26, 2004, 04:47 PM
Congratulations, is like to see the history....but indoor :D nice plane and I am happy for you to the VTOL !!!!!
derk
Jan 26, 2004, 05:17 PM
its not the one im thinking of
i do have some three veiws sorta.( trying to edit to right size for post)
the one im thinking of was in a recent movie (that i didn't see) the movie was uh a frankie munez movie.
also i've seen a few of your planes in magazines and online and was wanting to know how you build such inventive planes?
whenever i have a good idea i can never afford to finish it.
derk
Jan 26, 2004, 05:18 PM
front.
derk
Jan 26, 2004, 05:20 PM
back veiw.
also remember this is purely a conceptual design it has never been tested at all to my knowledge.
derk
Jan 26, 2004, 05:23 PM
one more (i love this one:D )
Ed Couch
Jan 26, 2004, 07:16 PM
Derk, got to admit thats one unusual concept hog for sure. Wonder what the power supply would have been. Sure doesn't look like convential turbine power cause there ain't no room for the fuel tanks for any real duration ala the flying belts of time past, but the mind is a wonderful thing. Neat for sure!
derk
Jan 26, 2004, 07:27 PM
well its too bad that its not my idea but yeah i think it was a special power plant they planned to use they said it was supposed to weigh 250 lbs dry so it'd have to be a light engine.
derk
Jan 26, 2004, 11:03 PM
here's the one i was talking about.its pretty cool:cool:
Eljimb0
Jan 27, 2004, 12:08 PM
.
I was a big fan of the pogo stick when I was a kid. I have been following this thread for a while. It seems sufficiently off topic at this point to post this picture my band used as a promo shot. It is the lockeed one. What a great looking plane.
Ed Couch
Jan 27, 2004, 01:55 PM
Neat picture of the Lockheed Salamander as it was called. One of the interesting things about the test bird is that it never made a VTOL landing and takeoff due to the difference of the engines which were to have been the same as on the Pogo. Something to do with the oiling system but she always flew with the conventional landing gear from the first flight until the end of the test program. It could substain vertical and transitioned from horizontal to vertical a number of times but never took off or landed in the proposed configuration. As you know, the Pogo had no option and all flights were from the vertical takeoff/landing setup. It would be a neat airframe to do and I've worked for the company for over 23 years, just may have to do it up right and see what happens. ed
Bob H
Jan 27, 2004, 02:04 PM
Ed, Since you worked for Lockheed would you have access to a good 3 view? Searched the web but Google did not find what I was interested in.
Bob H
C Andrew Green
Jan 27, 2004, 04:30 PM
Bob H, Here you go........Pogo / Salamander Three View (http://www.fortunecity.com/marina/manatee/272/pogo.html) courtesey of Eduardo's Three Views (http://www.fortunecity.com/marina/manatee/272/) .
Regards
Andrew
Alfredo Rubio
Jan 27, 2004, 05:17 PM
Now I know the name of the Lockheed VTOL plane, I knew the Pogo was the delta plane, but both planes was build in the same time.
Nice pics of the fantastic .... bike????? looks lijke an small vesion of the Pegasus, the Harrier power plant :D
Well maybe in the future we or our childs will see this vehicles in the air, because the Pegasus produce very much noice and ....... well the man can give solution to any problem.
PLEASE....!!!!!!!!!!!!! MORE POGO PIC...........YES??????????
jeffs555
Jan 27, 2004, 05:44 PM
Everything I have read, says the Lockheed XFV-1 was called the Salmon. The only Salamander I know of is the German He-162. The link to the 3-view drawing says Pogo, but appears to be the XFV-1 Salmon. The delta winged Convair XFY-1 was called the Pogo. Here is a link to a Smithsonian site that has low res videos of the Pogo taking off, landing, and also transitioning from forward to vertical. http://www.airandspacemagazine.com/ASM/Web/Site/QT/PogoLanding.html
Jeff
Ed Couch
Jan 27, 2004, 07:34 PM
Jeff you be right on the Salmon instead of Salamander, senior moment please excuse. ed
Trying to get new thread up on new bird called "Poggy Bait". Something sweet to practice on. Having trouble with things working right, be back in little while.
Eljimb0
Jan 27, 2004, 08:09 PM
The Lockeed XFV1.. was flown by a test pilot named Herman Salmon, nicknamed "fish" That is the pilot not the plane. Kelly Johnson felt the whole thing was a bad idea. I don't think the Lockeed version of the plane had a nick- name... So usually they are both refered to as Pogo sticks. A very popular toy in the early 50's.
jimbo
Eljimb0
Jan 27, 2004, 08:16 PM
Run for your life!
Eljimb0
Jan 27, 2004, 08:26 PM
Much better looking!
Ed Couch
Jan 27, 2004, 08:28 PM
Here is site for the Lockheed variant of the VTOL aircraft. As to the name I ain't going there cause I already screwed that one up.
http://flatrock.org.nz/topics/flying/lockheed_xfv.htm
ed
jeffs555
Jan 27, 2004, 10:07 PM
Ed,
I know what you mean about those senior moments. I remember seeing the Convair XFV-1 somewhere in the late fifties early sixties. For some reason I had it stuck in my mind that it was at Wright-Patterson, but from searching the internet, it was probably Norfolk NAS. I know my father took me both places among others when I was young.
Eljimb0,
You seem to be right about the Lockheed XFV-1 not having an official nickname and the pilot being named Salmon. If you search the web, there are a lot of sites that do call the plane the Salmon.
Jeff
slowbatics
Feb 11, 2004, 09:35 AM
HELLO ED,
Any further testing on the Pogo? I tried the very same thing last year but kinda lost interest after a few crashes. Problem was the cg was very sensitive. My Pogo was Coroplast and powered by an OS46. At one point it would fly well but be hard to transition into hovr to land. After moving the cg I found thet it would hover but not fly worth a darn. Hope you are having better luck. I wish you luck.
slowbatics
Feb 11, 2004, 09:40 AM
Search- Pogoplast- on RCU
ronin8451
Feb 11, 2004, 09:58 AM
Have you thought of using another servo on a slider switch with a moving battery tray so you can change CG "on-the-fly" ?
Ed Couch
Feb 11, 2004, 01:46 PM
Flight wise, the Pogo takes off and lands quite well considering. Very stable with no real vices. As stated before, I'm not one that cares very much for hovering 3D maneuvers, as a result my landing attempts have often failed to put me down vertically but Mike (FreeWilley) from Weatherford had absolutly no problem holding a consistant hover and vertical landing every time he flew it. The takeoffs are "a thing of beauty and a joy to behold" if I may quote an old friend. Just apply power and push over to heading at about five feet. Aircraft flies slightly nose high and handles just fine. It was never designed to loop and roll much indoors but it does what needs to be for show and tell. It works and is quite stable although Mike prefers a lighter handling aircraft he does quite well with the Pogo. I'm working on getting better but once I've proved the bird I tend to want to do something else. Built the Poggy Bait to help me hover and have no problems with it although it is more sensitive to control input than the Pogo. All in all this has been a great little success story and I'm tickled the dang thing did what I wanted it to do. ed :p
ronin8451
Feb 11, 2004, 01:58 PM
That is all that matters. Ed. As long as it does what you want you completed your goal! I get a kick out of seeing you fly your works of art around.
Mikey does like his 3-D planes !
Looking forward to seeing your next creation!
Rick
Ed Couch
Apr 26, 2004, 09:32 AM
Pogo up, photos taken a couple of weeks ago. Things works if you are good enough. I working on it but the landings are a bitch.
Ed Couch
Apr 26, 2004, 09:35 AM
Files to big, downsized a little.
ed
jochen
May 14, 2004, 10:12 AM
Hello,
i´m starting to build this Vtol right now. Could you tell me where the COG should be?
Thanks
jochen
Ed Couch
May 14, 2004, 12:28 PM
Jochen, you know I really don't know right now but it seems I started about 25 percent back from intakes on Pogo. I'm at work now so it will be this evening before I can get you an answer, its balanced toward the far aft limit which assists in maintaining a stable hover. See if I can get back with you this evening if I don't have a senior moment and forget. ed
jochen
May 14, 2004, 01:06 PM
Hi Ed,
thanks for you fast reply! How thick is the material for the wings?
I would be very great, if you could post a video of this plane.
Greetings
Jochen
Ed Couch
May 14, 2004, 01:43 PM
Foam is the same old blue foam everyone seems to be using by Dow. It is referred to as "Fan Fold" and is about .250 inch thick. It works quite well but is not my normal media to work with, prefer balsa but went with blue foam to save time as the initial percentage of success was very low. I thinking seriously of starting the second bird and working drawings up for publication. Maybe one of the magazines would be interested in the subject. It has proven itself out for sure. Time will tell. ed
Alfredo Rubio
May 14, 2004, 07:25 PM
Very nice pics, looks grat in hover !!!!!! the spiner complete very nice the nose lines.
Cheers
Alfredo Rubio
Ed Couch
May 15, 2004, 12:17 AM
Jochen, the C/G is around 30 percent. Most of what I do is by guess and by gosh and 40 plus years experience. Electric is sweet in that I can be conservative and start nose heavy and work my way back to the fine point just before things gets unmanageble tail heavy where the aircraft will begin to hover so that I can control it more or less. It works for me. Don't know how you will be doing your plans but I took a 1/2 page 3 view of the Pogo to Kinkos and had them blow it up to 300 percent. Took that home and inked in the lines and also added the enlarged controls surfaces. Figured out a basic wing area and roughly calculated the overall weight of the components. Figured how much I needed to enlarge the plans to meet those parameters I was looking in size and wingloading and went back to Kinkos for the final cut. Went to the machines that produced 11/17 copies for a nickel or so and broke the plan down to tiles making several copies of each section of the plan. Went back to shop and cut out the various parts from the copies of the plan to use as templates for the parts thusly never cutting up the original. The various trips back to Kinkos still cost me less than ten bucks to do and I still have all my templates plus the original plans to work from. Takes very little time to do and the airframe outline is exactly scale. Again its all just for fun. ed
Petefoss
Dec 02, 2004, 07:22 PM
I built a Pogo from Hippo's 5 mm white foam about the same size as Ed's. Learned an important lesson on the first flight. Servo tape sticks great to the silver paint that I painted the foam with. However, the silver paint doesn't stick very well to the foam. My elvon servos came loose in flight so I had a rather abrupt landing. Looks repairable enough to learn some flight characteristics on before I build another one.
ggunners
Mar 08, 2005, 11:41 AM
Just completed a Flying Model Simulator (FMS) version of the Lockheed Salmon XFV-1.
Download it from My Website (http://gunnerson.homestead.com/files/xfv-1.zip).
http://gunnerson.homestead.com/files/xfv-1_prv.jpg
-- ggunners
landru
Mar 08, 2005, 03:33 PM
ggunners,
Thanks for the link. Unfortunately, I can't seem to get your model to work (FMS v2.0 beta 7 on W2K). What am I doing wrong?
Andrew
gbarc
Mar 08, 2005, 03:51 PM
Download the newest FMS alpha 8. Works Great!!! But damn that pogo is a bear to fly!!
Greg
ggunners
Mar 08, 2005, 05:19 PM
Please try FMS 2 alpha 8. It will work with both version 2.7 and 2.8 models.
-- ggunners
landru
Mar 08, 2005, 06:11 PM
Hmmm. FMS 2 alpha 8.5 just won't run on my w2k box. I just tried the install three times. Couldn't find an help in the FMS FAQ. Any hints?
Andrew
ggunners
Mar 08, 2005, 07:04 PM
landru,
Many folks are running on W2K. I've got 2 machines with it. FMS 2.8 does require at least one COM port active so if you have them all disabled in your ROM BIOS, enable one.
Without further details on your setup, I'm at a loss to suggest something else. There are known problems with some laptop graphics chips. Also known problems with high-end ATI cards unless you have the latest drivers.
Let us know some more details, maybe we can help.
-- ggunners
landru
Mar 08, 2005, 07:11 PM
Thanks for those suggestions, ggunners. I'll have another go at it when I have a little more time tomorrow.
Cheers,
Andrew
dougmontgomery
Mar 08, 2005, 07:15 PM
Well This isn't an indoor but it is out of FFF and could be made one, Thought you guys might like the video displayed by intermision this was my Pogo XFY-1 if you haven't already seen it, Post#77, Doug Montgomery
http://www.rcgroups.com/forums/showthread.php?t=329584&page=6&pp=15
dougmontgomery
Mar 08, 2005, 07:23 PM
Lockheed XFV-1
And If you were interested in another of my unfinished projects, this would be great indoors with a cd rom or a feigao/ips gearbox. I started and ended this project due to lack of power equipment and a indoor facility. Who wants it? $5.00 shipping
http://www.rcgroups.com/forums/showthread.php?t=295139
vBulletin® Copyright ©2000-2009, Jelsoft Enterprises Ltd.