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Smash
08-31-2005, 02:15 PM
Hello!

These are my first words in this forum....
I need help, I've got a Speed 400 and a Jeti JES 020 controller and I want to build an electric glider with this stuff. The demands are the followings:
- Wing: The wingspan maximum 1.5 metres, becouse I want to carry it on public transport (I make the wing from two pieces)
- If I don't want LiPo (http://www.rcuniverse.com/buynow/keywordclick.cfm?bid_id=2320) accumulators which is tthe best choice for power supply? I imagined 7-8 cell of NiMh AA batteries, 2400 mah.
- I think I should buy a gearbox, but which size? 1:3?
- I want to build it with 4 micro servos, so I want that the plane can do all the MIXes like aileron differential, ?bird brake? (I dont now this word in English)

So, can You help me with plans or links where I can find similar planes? Please!

Thanks and sorry for my English!

rcers
08-31-2005, 02:43 PM
Your English is great Smash - Welcome to Wattflyer..

How about the Skimmer from Hobby Lobby? It works great on a simple direct drive s400 motor and 7 cells or 2s LiPoly and 6x3 prop.

It is inexpensive and flies great:
http://www.hobby-lobby.com/skimmer400.htm

It is Rudder elevator only however....

Mike

Smash
08-31-2005, 03:08 PM
Hy Mike!

Thanks for the quick reply!
Okay, I'm thinkig about planes like this! But I want more alternatives then I can choose one.
To tell the truth I don't want to buy a kit, becouse America is soooo far away from Hungary, and I just need a scratch, not a complet kit... I like building!
I have got 4 planes all made by me, 3 slopeglider and one electric trainer... now I want to build a sailplane with an electric motor.
Is there any difference between glider and sailplane?

rcers
08-31-2005, 04:14 PM
I know that you are close to some great manufacturers over there, but I don't know exactly who. I know NorthEast sailplanes gets many of them from there.....

Glider and Sailplane are the same in my book!

Mike

Smash
08-31-2005, 08:40 PM
Hello!

I have look around on the net and collect the gliders with speed 400 and with a maximum 70" (1778 mm) wingspan.

The most frequent profiles are the followings:
- SD 7080
- E 205
- SD 3021 ( S 3021 is the same??)

Do You know anything about these profiles? Which do You recommend for me, if I want to bild a plane with good thermal abelities?

I think the best power system will be the Speed 400 with an 4:1 gearbox and 7 cell AA 2400 mah accumulator pack and with an 11*8 folding prop.

The wing will be a polihedral wing with removable wingtips, it's the best wing type I think becouse in the center of the wing there are the rubbers which press the wing to the fuselage. Oh that's a pretty complicated sentence:) .

That's all what I figured out yet. Please help!

This plane is the best:
http://www.srbatteries.com/x440.htm

Andrew

Smash
09-06-2005, 08:01 PM
Hi!

I made a skatch:

http://img136.imageshack.us/img136/2895/repl4fs.th.jpg (http://img136.imageshack.us/my.php?image=repl4fs.jpg)

Please tell me everything You think about it!

Thanks!

Andrew

Sky Sharkster
09-08-2005, 01:58 AM
Hi Andrew! In regard to your questions about Speed 400 sailplanes, I think you're on the right track, but you might want to try a kit for the first one, then use what you learn from the kit to design your own. If you just want plans from proven designers, try "Quiet + Electric Flight" (English magazine) plans service < www.traplet.com>, click on "Electric-Powered Gliders". Also, if you want a really top design that is a true building challenge, try www.charlesriverrc.org (http://www.charlesriverrc.org) Click on "Articles and Tips", next click on "Online Plans". You will find plans for both the composite or balsa "Allegro-Lite", Mark Drela's contest-winner. He also sells short kits.
The airfoils you mentioned are pretty popular, the E (Eppler) 205 is an old-school thermal duration profile, it is a bit thick for modern designs, the section will glide well but the upwind penetration is lacking. It's OK for a trainer but you will see better all-around performance out of the SD (Selig- Donovan) 7080, this is used in high-performance 2 meter and bigger gliders and the SD 3021(same as S 3021) which seems to fly better at lower Reynolds numbers, in other words, smaller and slower gliders. For 1-1/2 meters it's hard to go wrong with the SD 3021.
I've taken a lok at your drawing and have a few suggestions. The overall design proportions look pretty good, but I think you can cut the nose size down in diameter and still fit the planetary gearbox in. The MP Jet 'box is exactly the same size as a 400 so there's no reason to have a bigger diameter nose. Next, the 5 degrees of wing incidence is too much unless you have some opposing incidence in the stab. I'd set the wing at 3 degrees and trim with the elevator and C.G.
On the wing construction, are those tubes carbon fiber? If so and you're also going to use them as joiners (with a rod inside to connect tips) I'd wrap the first few inches with thread to prevent them from splitting under load. I like the double taper but you might want to reverse the angles, more sweep at the front to help prevent tip vortices, like the "Omega" from NSP. The "D-Tube" wing construction is a great idea, very strong and light. If you plan to use ailerons the trailing edge will need to be wider, they should be (the moveable part) about an inch wide with a pretty substantial trailing edge (Fixed part) to hinge it to, and prevent warping. Some builders sandwich a strip of C.F. between the upper and lower parts of the ailerons to stop it from warping, also C.F. "caps" on the ribs will allow you to use thinner wood.
As a last suggestion, try to study any airplanes, magazine articles and plans you can find to see what others are using. I admire your willingness to build from plans but don't be afraid to "borrow" some ideas that have worked for others! Good Luck, Sky Sharkster

Gliderbill
09-08-2005, 05:06 AM
Is it a glider or a sailplane? That is the question! In RC flying as in 1:1 scale, there is a difference, a BIG difference; however, only the purists who build scale sailplanes will object to their planes being called "gliders". The Wright brothers built and flew "gliders". Gliders are used to train pilots, have two seats, and will usually have a glide ratio of less than 20:1, (20 feet forward for 1 foot loss of altitude), in calm air, no thermal lift. A high performance "sail plane" may have a glide ratio of 40 to 50:1, (or more), and the pilot/owner of one of these fantastic soarers would definitely frown on his/her plane being called a "glider"! Gliders need a lot of help to stay aloft, whereas sailplanes will float on the lightest thermal. Be sure to use a folding prop on that electric sailplane!


Thanks for the quick reply!
Okay, I'm thinkig about planes like this! But I want more alternatives then I can choose one.
To tell the truth I don't want to buy a kit, becouse America is soooo far away from Hungary, and I just need a scratch, not a complet kit... I like building!
I have got 4 planes all made by me, 3 slopeglider and one electric trainer... now I want to build a sailplane with an electric motor.
Is there any difference between glider and sailplane?[/quote]

Smash
09-08-2005, 05:59 PM
Hi!

I want to build a sailplane with a glide ratio of (40 to 50:1) or more:D!

I tried charlesriverrc but the Allergro is too big, I want to carry the plane in public transport so the max wingspan could be approximately 1700mm. (850 - 850mm). It's sure that the prop will be a folding prop!
The profile is what I can't decide yet, I am thinking about Marc Dreala's AG 34-35-36-37. Or it should be the SD 3021? That's fit to the wingspan not the SD 7080.
The fuselage is a pretty bad and ugly drawing :D :D :D !
You must misread the wing angle, it's 3 degrees!
Yes, I want to use the carbon tubes wing joiner also. In another forum I've got a reply about the tubes... it's said that I should leave the main tube becouse it's just weight becouse the D boxing (shafting) is enough... what do You think?

Andrew

Sky Sharkster
09-11-2005, 11:55 AM
Hi Andrew! I must have misread the wing angle, if you have 3 degrees, that's about right. My choice for airfoil would be the SD 3021, I've only seen the Drela airfoil fly on the "Allegro" which is much bigger than your plans, it might work on a smaller wing, though.
If you're going to have a full-span "D" tube wing construction with leading edge sheeting it will be strong enough for all-weather flying. My suggestion is to use the C.F. tubes about 15mm into each wing with rods as joiners, outboard of the tubes just use 1/32 balsa webs between the spars.
If you can keep the covered airframe weight around 250 grams the ready-to-fly weight will be about 700gr, the motor weighs about 70 gr, the gearbox (MP Jet planetary) 60 gr, battery about 150-200 gr, plus servos, prop, RX and ESC. Of course every bit of weight saved on the airframe will help since the electronic and power system weights are pretty much fixed. I've seen (airframe) weights much lower (140-200 grams!) for R.T.F. models but these are expensive composite models. Good luck with your design, I'd be interested to hear how it flys! Sky Sharkster

Smash
11-07-2005, 06:41 PM
Hi!

Here I am!:D

I've started to build the plane. First I want to make the wing. The profil is the S3021. I've done several changes on the plan, I've left out the carbon tube.
The ribs and the sheeting are from 1mm light balsa, there are to main slat from fir (2*8), and there are two smaller slat from fir too (2*4).
I want to build the wing light&strong:D . Now I'm at 92 gramms and it's very strong (but not light as I want:( :mad: ).
OK, here are some pictures:

http://www.kepfeltoltes.hu/thumb/051107/S3600006b.jpg (http://www.kepfeltoltes.hu/view/051107/S3600006b.jpg)
http://www.kepfeltoltes.hu/thumb/051107/S3600011b.jpg (http://www.kepfeltoltes.hu/view/051107/S3600011b.jpg)
http://www.kepfeltoltes.hu/thumb/051107/S3600013b.jpg (http://www.kepfeltoltes.hu/view/051107/S3600013b.jpg)
http://www.kepfeltoltes.hu/thumb/051107/S3600014b.jpg (http://www.kepfeltoltes.hu/view/051107/S3600014b.jpg)


What do You think?

Andrew

Sky Sharkster
11-07-2005, 07:47 PM
Hi Andrew, the wing looks good! I wouldn't worry about the weight so far, the all-up weight should come out 120-140 grams (about 1/2 the airframe weight) so 92 grams seems about right at this point. Aim for less than 140 gr covered, thats about 1/2 the airframe weight. The fuselage (without electronics or motor but otherwise finished and covered) should be about 100 grams and the entire tail-covered-about 25-30 gr. This will total 250-300 grams and the electronics and powertrain will about double that. Unless you go to an all-composite construction it's very hard to get a ready-to-fly weight under 20 ounces (560 gr).
What covering are you planning to use? I've had good luck with Coverite's "Microlite" iron-on, also Solarfilm "SoLite", both are easy to apply and tighten but lack the puncture-resistance of the heavier films. Covering will add between 40-100 grams so be careful what you choose!
Good luck, the build looks great so far! Ron

Smash
11-07-2005, 08:56 PM
Hi Ron!

Thanks for the reply!
Unfortunately in Hungary I can purchase Oracover only, I don't now the exact "type" of this film. This film isn't too heavy but so strong, so it will be Ok for this plane.

Andrew

qban_flyer
11-07-2005, 09:59 PM
I have been extremely pleased with my Omega 1.8 sold in the US by N.E. Sailplanes. I am sure it is available worldwide under different names as it is a Bulgarian product.

Check link below for a peek at mine (entered in the Watt Flyer contest).

http://www.wattflyer.com/forums/showpost.php?p=15828&postcount=110

Smash
11-08-2005, 04:13 PM
Hi Qban Flyer!

Nice plane!
You use the Speed 400 directly with a folding 6*3? Is it enough? I'm thinking on a 4:1 gearbox with ball bearing... What do You think about the wing?

Andrew

qban_flyer
11-08-2005, 05:15 PM
Hi Qban Flyer!

Nice plane!
You use the Speed 400 directly with a folding 6*3? Is it enough? I'm thinking on a 4:1 gearbox with ball bearing... What do You think about the wing?

Andrew

I am using a long can Speed 400 ($16 @ H/L) direct drive spinning a Graupner 6X3 folder. The long can is designed to be operated at 12V, the perfect motor to keep the plane light using three cell Li-Pos.

When the guys at the electric club saw it flying for the very first time they thought I had a B/L motor in it. It's hard for them to see it climb so high in such a short period of time and believe it's a lowly long can Speed 400 up front.

Great flying machine. So well made, and with independent aileron servos, mixing in camber for added lift is a cinch. Reflexing them makes on the spot landings easy! :)

Smash
11-10-2005, 05:54 PM
Hi!

I don't know yet which gearbox and prop should I use!
Please help!

qban_flyer
11-10-2005, 11:36 PM
Hi!

I don't know yet which gearbox and prop should I use!
Please help!

Up to 1.8 meter I use the above described set up. It is so powerful, some other flyers believe I am using a B/L motor!

Long can Speed 400, no gearbox, 6X3 Graupner folding propeller, three cell Li-Po 2100 Thunder Power pack. Climbs very quickly and rather steeply.

Smash
11-14-2005, 07:44 PM
Hi!

I've started to build the left tip and now it's almost done:

http://img12.imageshack.us/img12/9238/s36000153yk.th.jpg (http://img12.imageshack.us/my.php?image=s36000153yk.jpg)http://img109.imageshack.us/img109/7066/s36000170er.th.jpg (http://img109.imageshack.us/my.php?image=s36000170er.jpg)

I've turned on the trailing edge with 2°, here You can see it:

http://img109.imageshack.us/img109/6241/s36000186gs.th.jpghttp://img109.imageshack.us/img109/8218/s36000198tj.th.jpg (http://img109.imageshack.us/my.php?image=s36000198tj.jpg]http://img109.imageshack.us/img109/8218/s36000198tj.th.jpg)

I searched this Long can Speed 400 in Hungary but unfortunately I hadn't find it... I have decided that the motor will be a Speed 400 7.2V with a Planetar 3.8:1 gearbox and with an 10*6 CAM Folding Prop, I think it will be enough.

Andrew
[/URL]

qban_flyer
11-15-2005, 04:04 AM
Hi!

I searched this Long can Speed 400 in Hungary but unfortunately I hadn't find it... I have decided that the motor will be a Speed 400 7.2V with a Planetar 3.8:1 gearbox and with an 10*6 CAM Folding Prop, I think it will be enough.

Andrew


Andrew,

That speed 400 with the planetary should do a good job taking it up. :)

Smash
11-15-2005, 01:27 PM
Andrew,

That speed 400 with the planetary should do a good job taking it up. :)

Is it difficulty? Or I misunderstand it? What does this sentence mean?

a, It's heavy to set up the gearbox and motor
b, It will be a good stuff for this plane
or c, :) ?

Andrew

Smash
11-15-2005, 06:02 PM
Hi!

I think I have understaded it :)... So it will be good for bring she up to the deep blue sky... :)

qban_flyer
11-15-2005, 08:12 PM
Hi!

I think I have understaded it :)... So it will be good for bring she up to the deep blue sky... :)

Correct. That will be more than enough power to take it up into the wild blue skies. :)

Smash
11-20-2005, 08:46 PM
Hi!

I have finished the wing! Now it's 185 gramms (6,5 oz) without the two servos ( +10 gramms / 0,5 oz)

Here are some pictures:

http://img453.imageshack.us/img453/3315/s36025544td.th.jpg (http://img453.imageshack.us/my.php?image=s36025544td.jpg)

The winglet:

http://img453.imageshack.us/img453/5034/s36025555fx.th.jpg (http://img453.imageshack.us/my.php?image=s36025555fx.jpg)
http://img453.imageshack.us/img453/5324/s36025565py.th.jpg (http://img453.imageshack.us/my.php?image=s36025565py.jpg)

What do You think?

Andrew

Sky Sharkster
11-21-2005, 12:46 AM
Hi Andrew, the wing build looks great! Nice job. The weight is lighter than I usually see for this size, you must have done a good job picking out the wood and other material. With a typical iron-on (not one of the super-light ones) you should be able to keep the covering to about 1 to 1-1/2 oz (30-45 gr) is so the wing will be 8 to 8-1/2 oz. I think the geared 7.2 motor will be enough power, the direct-drive "long Can" and the 6.0v motors do turn a prop faster but the gearing is more efficient and I believe, easier on the motor. Looks like you're going to have a very nice glider! Keep up the good work! Ron

savydad
11-21-2005, 01:12 AM
I don't know too much about glider/sailplanes, but noone has said anything about his choice of cells, which IMHO, are not efficient. From my experience, the 2000mah and up AA's are consumer grade, and will drop voltage seriously at over 1c or 2a. With what he's planning on using, it will pull roughly 6a, and unless sailplanes are different on thrust needs than a normal plane, he's gonna need either a way bigger prop, or less gearing even with a 6v sp400. Motocalc says 14oz thrust and his wing and power system will be 18oz. If I'm wrong, don't flame me, but I want to understand sailplanes a little better, and just not sure if the rest of the power system is getting overlooked. BTW, excellent looking build on the wing smash.

Todd

qban_flyer
11-21-2005, 06:23 AM
Motocalc says 14oz thrust and his wing and power system will be 18oz. If I'm wrong, don't flame me, but I want to understand sailplanes a little better, and just not sure if the rest of the power system is getting overlooked. BTW, excellent looking build on the wing smash.

Todd

HMMM!

I have no clue as to what the phrase "wing and power system" really means. If you are referring to AUW, then he is OK, and if the AUW is higher there still is the possibility that his model will do OK.

As I understand it, a Boeing 747 "thrust to weight" ratio is 37%, which means this model's power system as you have measured it using MotoCalc will be able to lift a 37 3/4 ounce sailplane aloft without problems, although it won't take it up like a rocket.

My Omega 1.8 E-Powered sailplane goes up powered by a long can Speed 400 directly driving a Graupner 6X3 folding propeller. Batteries are a T/P 11.1V 1320 Li-Po pack. Static thrust estimated to be in the neighborhood of 13 or so ounces while the sailplane weighs in at a bit over 23 ounces. It climbs at a respectable 20 degrees. Current draw is a bit over 11 amps.

Is it the sailplane? Is it the power plant? Or is it the total combination of components achieving this level of performance? I have no clue, and just as the bumble bee and yours truly, my Omega 1.8 keeps on flying impervious to what the specs may or may not say what it can or should do. :D

savydad
11-21-2005, 08:41 PM
I gotcha, I know that planes don't need 1:1 t/w ratio, and I was referring to the weight of his wing and power system...guessing on auw of around 24oz~. I'm trying to understand sailplanes a little better, just kinda confused, as the 48oz 48in plane I have now needs 30oz to even get off the ground, but I have it powered for 54oz thrust. These much more efficient wings/glide ratios have a lot to do with how a small powerplant will perform. Thanks for the info and help understanding some more on the sailplane/glider side.

Todd

qban_flyer
11-22-2005, 06:10 AM
I gotcha, I know that planes don't need 1:1 t/w ratio, and I was referring to the weight of his wing and power system...guessing on auw of around 24oz~. I'm trying to understand sailplanes a little better, just kinda confused, as the 48oz 48in plane I have now needs 30oz to even get off the ground, but I have it powered for 54oz thrust. These much more efficient wings/glide ratios have a lot to do with how a small powerplant will perform. Thanks for the info and help understanding some more on the sailplane/glider side.

Todd

No problem.

Just out of curiosity, what model are you flying that requires that much thrust?

Smash
11-26-2005, 05:44 PM
Hi!

The flying weight will be around 800 gramms unfortunately...
I've ordered the gearbox and prop: an MpJet planetar 3.8:1 with a 10*8 CAM folding prop.

I've done the V tail, but I don't know how should I connect them... I use hinges in my other planes but here I can't use normal hinges becouse the tail is made from 3mm balsa...
Can You post some pictures, tipps for this problem? Should I use textil hinges?

http://img359.imageshack.us/img359/6672/s36025607qs.th.jpg (http://img359.imageshack.us/my.php?image=s36025607qs.jpg)
http://img359.imageshack.us/img359/1726/s36025620yb.th.jpg (http://img359.imageshack.us/my.php?image=s36025620yb.jpg)

savydad
11-26-2005, 09:15 PM
It's a hobbico superstar ep, 48-52 oz auw, not a sailplane/glider, but it does float pretty well the way it is. It's not quite a 50:1 glide ratio, but I'd say well in the 10:1 or over range. I've done some more research on sailplane/gliders and realize now that not much thrust is needed when using a high-start or launcher of some sort as the most thrust is needed at takeoff. This is not needed in these type planes, and once they're moving 1:5 t/w ratio is easily achieved. Add the fact he just said 800g auw, that's roughly 28oz, so 14oz thrust is more than enough.

Todd

Smash
11-26-2005, 10:00 PM
Please... do not OFF my topic!

falingtrea
11-27-2005, 01:52 AM
Hehheh, guess what I found in the attic! A Gentle Lady!! I have had it for at least 8 years. Forgot it was up there. Gonna have to figure out what new electric gear I can put in it when I get it built.

qban_flyer
11-27-2005, 02:33 AM
It's a hobbico superstar ep, 48-52 oz auw, not a sailplane/glider, but it does float pretty well the way it is. It's not quite a 50:1 glide ratio, but I'd say well in the 10:1 or over range.
Todd

The SuperStar EP is a great flying machine. One of the better ARF e-trainers around. I bought one last Summer when they first came out. On its first day out, a newbie at the club fell in love with it and wanted it so bad "that day" I sold it to him on the spot.

The LHS has not stocked them since, but I'll be getting me another one so that I can put an outrunner up front and Li-Pos in its belly. It is a fun flying machine and good looking one at that too! :)

Sky Sharkster
11-27-2005, 02:55 PM
Hi Andrew, in regard to the hinges, if the wood is too thin to slot you still have a couple of options; Under the Builders Tips and Techniques Forum I posted a reply to Pace Likethesalsa's question along the same line. It describes using the covering as the hinge material. The thread is titled Free Flight Conversion. This works very well with just about any iron-on but does take a little practice.
As another option, how about tape? Clear tape is used on many ARFs, Hobby Lobby and other vendors sell a special "Hinge" tape but clear Scotch Tape will work too.
Last, about the worst-looking but does work, you can glue CA type hinges to the top of each surface, then cover over it. Not very aerodynamic I admit, it would be a last resort!
Good luck, looks like you're moving right along with the build, nice work on the lightening holes! Ron

Smash
11-27-2005, 05:00 PM
Thank's Sky Sharkter! I've checked it out! I will post pictures soon... :D

Smash
11-29-2005, 04:45 PM
Hi!

The stuff has arrived and unfortunately I've got some problem with it... http://static.rcgroups.com/forums/images/smilies/confused.gif http://static.rcgroups.com/forums/images/smilies/confused.gif http://static.rcgroups.com/forums/images/smilies/frown.gif
The shaft diameter of the MpJet gearbox is 4 mm but the screw nut in the folding prop is just 3.2 mm.... How can I put the prop on the gearbox's shaft? Is there any converter?

Some pictures:

http://img490.imageshack.us/img490/5290/s36025630qt.th.jpg (http://img490.imageshack.us/my.php?image=s36025630qt.jpg)
http://img490.imageshack.us/img490/3332/s36025646ou.th.jpg (http://img490.imageshack.us/my.php?image=s36025646ou.jpg)
http://img490.imageshack.us/img490/9620/s36025655sw.th.jpg (http://img490.imageshack.us/my.php?image=s36025655sw.jpg)
http://img486.imageshack.us/img486/8642/s36025673nv.th.jpg (http://img486.imageshack.us/my.php?image=s36025673nv.jpg)
http://img490.imageshack.us/img490/2863/s36025664pa.th.jpg (http://img490.imageshack.us/my.php?image=s36025664pa.jpg)

Andrew

Sky Sharkster
11-30-2005, 01:43 AM
Hi Andrew, sorry to say I ran into the same thing with the MP Jet gearbox, lucky for me I had bought an AXI motor earlier that had a 4mm shaft so had picked up a 4mm folding prop assembly from Hobby Lobby. I don't think they make a converter, seems like it would stick out too much You may have to buy a 4mm center piece, or maybe one of the kind folks here can help. Good Luck! Ron

qban_flyer
11-30-2005, 08:02 AM
Hi!

The stuff has arrived and unfortunately I've got some problem with it... http://static.rcgroups.com/forums/images/smilies/confused.gif http://static.rcgroups.com/forums/images/smilies/confused.gif http://static.rcgroups.com/forums/images/smilies/frown.gif
The shaft diameter of the MpJet gearbox is 4 mm but the screw nut in the folding prop is just 3.2 mm.... How can I put the prop on the gearbox's shaft? Is there any converter?

Some pictures:
Andrew
You will have to get a propeller with a 4mm nut (collett) or get a planetary gearbox with a 3.2mm shaft (almost impossible to find).

Aeronaut propellers are from Germany. They sell "Rudi Freudenthaler's" folding propellers with 4mm shafts, Graupner does not. The Aeronaut Freudenthaler propellers come in "kit" form. You'll see what I mean when you go to the page linked below.

Hopefully you will be able to find them in Hungary, or perhaps order them from a hobby shop in Germany.

http://www.hobby-lobby.com/freuden.htm

Smash
12-24-2005, 12:01 PM
Merry Xmas!

Andrew

Sky Sharkster
12-24-2005, 12:20 PM
Merry Christmas to you, Buddy! How's the glider coming? Did you get the 4mm prop adapter?
I'm taking vacation days next week. Will stay home and work on my (long-delayed) Art Hobby "Agena" Sp 400 LMR kit. Nice obeechi-covered foam wings, F/G boom, Carbon nose. I plan to have 2 motor options; Sp 400 6.0V for "brushed motor" competitions and a Hacker B20 15L for "Fun" flying. My idea of "Fun" is climb like a rocket, glide like a bird!
Keep Building, Summer will be here before you know it! Ron

qban_flyer
12-24-2005, 02:05 PM
Merry Xmas!

Andrew

Merry Christmas to you too, Andrew!:)

Smash
12-26-2005, 09:22 PM
Hi!

Unfortunately I haven't got too much time nowadays... but I'm working on the fuse now:

http://img518.imageshack.us/img518/8516/s36026356no.th.jpg (http://img518.imageshack.us/my.php?image=s36026356no.jpg)

And here is the electric stuff:

http://img466.imageshack.us/img466/1395/s3602633b4cb.th.jpg (http://img466.imageshack.us/my.php?image=s3602633b4cb.jpg)

I haven't got the new 4mm nut yet but the broken nut is at my friend who will make one.

Smash
01-03-2006, 07:10 PM
Hi!

The project is here now:

http://img258.imageshack.us/img258/8339/s3602680b1th.th.jpg (http://img258.imageshack.us/my.php?image=s3602680b1th.jpg)

Happy New Year!

Andrew

Smash
01-12-2006, 08:10 PM
Hi!

The plane is almost ready!
The empty weight is 330 gramms ( 11,6 oz) without coverig so it will be maximum 800 gramms with the electronics. I'm tired to write now so here is some pictures:

http://img482.imageshack.us/img482/634/s36026970es.th.jpg (http://img482.imageshack.us/my.php?image=s36026970es.jpg)
http://img482.imageshack.us/img482/133/s36027013mf.th.jpg (http://img482.imageshack.us/my.php?image=s36027013mf.jpg)
http://img482.imageshack.us/img482/2144/s36027038gl.th.jpg (http://img482.imageshack.us/my.php?image=s36027038gl.jpg)
http://img482.imageshack.us/img482/461/s36027023rk.th.jpg (http://img482.imageshack.us/my.php?image=s36027023rk.jpg)
http://img482.imageshack.us/img482/497/s36027044yn.th.jpg (http://img482.imageshack.us/my.php?image=s36027044yn.jpg)
http://img482.imageshack.us/img482/880/s36026990qn.th.jpg (http://img482.imageshack.us/my.php?image=s36026990qn.jpg)

Sky Sharkster
01-13-2006, 02:35 AM
Hi Andrew, great going on the build! Looks like it's nearly ready to catch a thermal!
With the leading edge sheeting the wings should be plenty strong, good job. The photo of the nose after it's sanded shows some nice workmanship, keep it up! Are you going to put a rudder on top of the stabilizer? Let me know when it's covered, I'd like to see a photo.
Good Luck, Ron

Smash
01-14-2006, 04:04 PM
Hi Ron!

First I don't really understand this sentence::o
"Are you going to put a rudder on top of the stabilizer?"
Where should I put a rudder??

How is your Agena going on? Please post some pictures! That's a really nice plane! Like the all other from ArtHobby. :)

Andrew

Sky Sharkster
01-14-2006, 05:47 PM
Hi Andrew, god to hear from you. I guess my question should have read " Are you going to put a rudder on?" The location is entirely up to you!
The "Agena" is moving along slowly, will post some pics as soon as I borrow my sister's camera. I'm still in the stone age (camera-wise) with my Pentax 35mm! She's got all digital stuff.
I'm off to watch some indoor flying at a hanger at (former) AFB, a model airplane Expo at the Air + Space Museum at Lowery. Most of the area (Rocky Mountain) clubs will have displays there, it's open to the public.
Nice work on the glider, keep building!
Ron

Smash
01-15-2006, 08:36 PM
Hi!

I've put in the connectors to the wing:

http://img475.imageshack.us/img475/7394/s36027094nt.th.jpg (http://img475.imageshack.us/my.php?image=s36027094nt.jpg)
http://img481.imageshack.us/img481/6033/s36027104ze.th.jpg (http://img481.imageshack.us/my.php?image=s36027104ze.jpg)

Andrew

Jason T
01-16-2006, 02:43 AM
Andrew,

Nice job on installing the connectors. Are those 4 pin Deans connectors?

Smash
01-16-2006, 05:47 PM
Hi Jason!

I don't even now how this connector called in hungarian but here's a picture from the original (This is an IC socket with gold legs and I've cut it into two pieces):

http://img502.imageshack.us/img502/4262/s36027062cx.th.jpg (http://img502.imageshack.us/my.php?image=s36027062cx.jpg)

Jason T
01-17-2006, 02:53 AM
Thanks! Yeah, I do not recognize that one either.

Smash
03-14-2006, 10:19 PM
Hi!

Sorry for the big pause, I haven't got too much time...
But! The plane is ready! I haven't maidened it yet...

The flying weight is 796 gramms, and the wing loadin is about 26 g/dm2 which is not bad I think... I'm tired to write now so here are the pictures:

http://img113.imageshack.us/img113/2138/s36001882hi.th.jpg (http://img113.imageshack.us/my.php?image=s36001882hi.jpg)http://img101.imageshack.us/img101/3899/s3600189b2tw.th.jpg (http://img101.imageshack.us/my.php?image=s3600189b2tw.jpg)http://img101.imageshack.us/img101/1734/s3600190b5mq.th.jpg (http://img101.imageshack.us/my.php?image=s3600190b5mq.jpg)http://img381.imageshack.us/img381/4589/s3600192b0yv.th.jpg (http://img381.imageshack.us/my.php?image=s3600192b0yv.jpg)http://img381.imageshack.us/img381/4468/s3600194b5yl.th.jpg (http://img381.imageshack.us/my.php?image=s3600194b5yl.jpg)http://img101.imageshack.us/img101/1549/s3600195b8lk.th.jpg (http://img101.imageshack.us/my.php?image=s3600195b8lk.jpg)http://img381.imageshack.us/img381/4105/s3600197b8xt.th.jpg (http://img381.imageshack.us/my.php?image=s3600197b8xt.jpg)http://img381.imageshack.us/img381/6938/s3600198b4bl.th.jpg (http://img381.imageshack.us/my.php?image=s3600198b4bl.jpg)http://img101.imageshack.us/img101/7927/s3600199b1lc.th.jpg (http://img101.imageshack.us/my.php?image=s3600199b1lc.jpg)http://img381.imageshack.us/img381/476/s3600200b2cs.th.jpg (http://img381.imageshack.us/my.php?image=s3600200b2cs.jpg)

Smash
03-14-2006, 10:19 PM
http://img381.imageshack.us/img381/3092/s3600202b7mm.th.jpg (http://img381.imageshack.us/my.php?image=s3600202b7mm.jpg)http://img381.imageshack.us/img381/1120/s3600203b8ve.th.jpg (http://img381.imageshack.us/my.php?image=s3600203b8ve.jpg)http://img101.imageshack.us/img101/3276/s3600204b5bh.th.jpg (http://img101.imageshack.us/my.php?image=s3600204b5bh.jpg)http://img381.imageshack.us/img381/810/s3600206b0pe.th.jpg (http://img381.imageshack.us/my.php?image=s3600206b0pe.jpg)http://img481.imageshack.us/img481/9080/s36002154rn.th.jpg (http://img481.imageshack.us/my.php?image=s36002154rn.jpg)http://img481.imageshack.us/img481/5624/s36002171su.th.jpg (http://img481.imageshack.us/my.php?image=s36002171su.jpg)http://img482.imageshack.us/img482/5839/s36002186br.th.jpg (http://img482.imageshack.us/my.php?image=s36002186br.jpg)http://img482.imageshack.us/img482/8619/s36002202zy.th.jpg (http://img482.imageshack.us/my.php?image=s36002202zy.jpg)

Sky Sharkster
03-15-2006, 01:20 AM
Hi Andrew, good to hear from you again! I see the glider's almost ready to fly. Good covering job on the tail, those bright colors will help when it's 1000 feet up in a thermal. I like the way you attached the servos to the hatch, when you take the hatch out the servo comes with it. I always have trouble getting them loose if they're in the wing. Your method makes more sense. Are you going to (or maybe already have) put plywood end ribs (caps) on the center ribs? If not they may chip or crack when the wings flex in flight. If not, you might want to harden the ends of the balsa with CyA glue.
If my math is correct it's weighing about 29 ounces. That's not bad for a glider this big. I have a speed 400 (geared 3.3:1) 2 meter glider that first flew at 31 ounces. Not a great climb but good enough. I got to thermal altitude in about 1 minute. Now I have an AXI 2800 series on the same plane and the climb takes 30 seconds!
Good luck flying and thanks for the photos!
Ron

Jason T
03-15-2006, 01:24 AM
Andrew,

Nice job on the build. Can't wait to hear the flight report.

wildlife2
03-23-2006, 01:08 AM
Do you want to sell your Omega 1.8M ???

Smash
04-02-2006, 07:51 PM
Hi!

I have maidened it!

Perfect. That's the word we are looking for. :)
It needed a little trimm but everything was ok. It flies very well, the motor isn't too strong but enough for thermalling.
I did the maiden flight in zero wind so I just flied out the battery and just made big circles. On the next weekend I'll try it on the slope.

Here are some pictures:

Smash
04-02-2006, 07:55 PM
I've forgot this picture :)

Smash
04-02-2006, 08:36 PM
... and this :D

The last check before the first flight... I was soooooo nervous :D

Sky Sharkster
04-02-2006, 09:02 PM
Hi Andrew, Great to hear that you got your glider flying!!!! Those are good flight photos, Is there a flying club there? Looks like other people bring out their planes also. Your glider looks good in the air, those bright colors help the visibility. Well, keep flying, you will catch a thermal soon.
Ron

Gliderbill
04-02-2006, 11:20 PM
That is a great looking plane! Congrats on the maiden flight!

Smash
04-03-2006, 07:32 PM
Thanks Guys!

I'm so proud! :D

Is there a flying club there? Looks like other people bring out their planes also.

Hi Ron!

In Budapest we've got only 3 big clubs... In the kommunist times (or i don't know how should I write ie, I hope You understand it), before 1988 the state gave a lot of many to the clubs becouse they were the part of the army. After the state had changed in 1988, the russians went home and the communism collapsed this system of the army disappeared so the clubs disappeared too, in those chaotic times people stole the machines and everything from the clubs... so now there's only 3 big club in Budapest and they haven't got too much many and only a ittle building .. :mad:
But nowadays the people can talk a lot in the hungarian RC model forum so little teams are being organised... like clubs.
So I've got this "club", this association, the HHH club. (HHH means Hármas-határ hegy which is the "hill" near Budapest where we always meet and fly) This is a very good club :) Here is a link to our topic where You can find a lot of picture from us:

Here are the day of the maiden flights, there were 3 new plane, one with a camera inside:
http://forum.rcmodell.hu/viewtopic.php?t=7826&postdays=0&postorder=asc&start=780

Pictures from 2005: (In the midlle with my old 2Ch sailplane)

http://forum.rcmodell.hu/viewtopic.php?t=7826&postdays=0&postorder=asc&start=45

In the summer:

http://forum.rcmodell.hu/viewtopic.php?t=7826&postdays=0&postorder=asc&start=135

http://forum.rcmodell.hu/viewtopic.php?t=7826&postdays=0&postorder=asc&start=150


The New Year Flying:

http://forum.rcmodell.hu/viewtopic.php?t=7826&postdays=0&postorder=asc&start=645

You can have a look at it...:)

Andrew

Sky Sharkster
04-03-2006, 09:58 PM
Hi Andrew, thank you for the links to the HHH club web site! Those are great photographs. Does the "ParaGlider" or "Hang-glider" group use the same hill? In one picture it looks like the model is flying near the "ParaGlider".
Seems like you have a lot of glider flyers there.
The white glider in later photos, is that your first one?
Those photos in the last link, in the snow! We fly in the snow also but it's not for everyone. Once my hands get too cold to fly, I go home.
Since the change-over from Communist rule, do you have an easier time getting modeling supplies? I remember you said there weren't too many hobby shops for supplies.
Keep flying!
Ron

Smash
04-04-2006, 05:14 PM
Hi Ron!

There are a lot of ParaGlider club there and also there is a lot of problem with them... :S I don't know too much of the communist rule becouse I was born in 1988 :D:D and I've started modelling around 2003.

Till this year there was only 2 or 3 model shop but nowadays many new online shops opened and these are much cheaper than the old ones.
And this is my first RC plane, which was originaly a free flight plane:

http://img26.imageshack.us/img26/9460/s3600478b8nz.th.jpg (http://img26.imageshack.us/my.php?image=s3600478b8nz.jpg)

Andrew

cebola
06-09-2006, 02:27 AM
Hello

This is my first post here, on wattflyer.

In fact I live in Brazil, and my favorite models are electric saiplanes.

The model below is my favorite.

The name is Gossamer Spirit, a tribute to Paul Macready work.
Is a man (electric) powered plane replica

I hope you like it.

Cebola
Brazil

Jason T
06-09-2006, 12:18 PM
Cebola,

Another nice model. :)

cebola
06-11-2006, 03:48 AM
Cebola,

Another nice model. :)

Tks Jason

A latter vertion is on my plans, but a big one, whit 20ft of wing span, but very light also, not more than 40oz, powered whit a Brushless 400.

It cost a lot of work to buid, that's the real problem.

Cebola
Brazil