Had mine out today but lost the screws that hold down the canopy. Took it up with out them but it just was not the same. I just like the way this plane flies!

Glad I found this thread! I got a Stinger 2 about a month ago and I have been slowly getting it put together...been spending maybe a night a week on it.

Finally got the cowl cut out last night so i'm on the home stretch!

I have installed a Saito YS 72 in it and it was a bit of a challenge with the throttle linkage, and the motor just barely mounted with the right cowl/spinner/firewall spacing. To make the throttle linkage work I got the Dubro 4stroke kit and it worked well.

Installed Spektrum/JR DS821 Digital Servo's so I guess I won't be using the Futaba stickers in the kit!!

Anyone else setup the plane with Flaperons? I imagine with the wing shaped the way it is they won't really be needed, but I figured it would be pretty cool to play with.

Imounted the exhaust outside of the cowl, and didn't bother cutting out the bottom at all. Ihope that with the side flaresairflow will provide enough exhaust for the hot air....opinions?

Ilike the in cowl 4stroke setup that was pictured above. Anyone know if that can be done with a Saito?

The stock cowling has lots of exit air on the sides like you mentioned. What you want to do is open it a little more in the front for the fresh intake air if possible. More the better. Rule of thumb is to make the exit holes twice as large as the intake holes because the air is forced into the intake but not forced at the exit.

Ernie

Here's mine! Just got done today. I took 11 days on and off to assemble mine; I am a notoriously slow assembler. Decided to go with the YS FZ63S instead of the OS 70 Surpass II due to slightly less weight and also length. Decided against the OS LA 46 I have because I don't want to be the slowpoke should my son get this plane and power it with the OS 46AX. Let's see...Futaba 3152 servos on all surfaces, Tower TS-53 on throttle, Futaba FASST receiver. Removed or covered the stock yellow stripe and I would like to find some stars and bars and USAF decals to place on the now red, white, and blue plane. Sure would like to find a wasp or hornet decal for the plane too. AUW is 86 ounces = 5lbs 6oz. CG is very slightly ahead of the recommended balance point. Jon

couldn't figure why it looked a little different at first, but it looks good without the yellow!

are you going to keep the wheelpants off? I don't think I will put mine on till I see how the stock wheels handle the grass @ my field.

I have always tried to keep 3" wheels on my planes so that the plane doesn't get swallowed in the green stuff. I may have to enlarge the opening in thepants to make that work.

my plane is now all finished except for the decals. I have to get the motor to actually idle....this is my first 4-stroke...man does it vibrate in the lower RPM's!

There is a good review of the Stinger II in the latest Model Avaition. It is by Jerry Smith who was the original designer of the Stinger for Lanier. It is worth reading.

Bruce

any way to get a scanned copy of the article? I can't get that mag up here in Canada...
Thanks!

AkitoI, I am sorry but I do not have the ability to scan it. Maybe someone else can.

Bruce

AkitoI, most 4-strokes are set way too rich on the bottom end from the factory. That makes them idle rough and shakey. Start leaning it out (bottom end, or low speed needle valve) and as it breaks in more and more you can lean it out a bit more. You may have to reset the top end as you do this as well. So.... slowly lean out the bottom end until it idles like a sewing maching, BUT then it will hesitate or die when you hit the throttle, then richen it up a little for a good compromise. This info is for your typical OS, Saito, or Magnum. YS's with the pump and superchanged crankcase pressure are different.

Ernie Misner

I spent some time yesterday putting decals on my Stinger II. Turned it into a stand way off Thunderbird, haha. Jon

Looks good, I like how it turned out. Mine is still naked, not sure what to do with it.

Andy

Jon, that looks lovely indeed. Good call on the colors and decals. Am I the only one whose aileron and elevator hinges were installed way too tight? Also, watch the elevator halves. I know of 2 of them so far that the ele. halves are not level with each other......

I've been pushing the balance back further and further on mine. And increasing the throw a bunch, like all the way!, on the control surfaces. Also am running a 13x4W APC on my 55AX and it hovers great now with that combination. Still won't flat spin though darn it. Gotta get the CG WAY back for that I guess.

Ernie

Thanks for the kind words, guys! It's fun to make the ARF your own in some way.

Ernie, I was not too pleased with the hinge work on my plane either. They are not too tight, but they are somewhat uneven. One of the ailerons was bad compared to the trailing edge of the wing panel. It waved up and down when viewed from the rear. I had to slice those hinges and install four new ones to satisfy myself. What did you do about your too tight hinges? Jon

Jon, my standard procedure for hinges that are too tight OR too much glue globbed on the hinge line (that will cut the hinges eventually) is to take a toothbruch and acetone and scrub, scrub, scrub, away on the hinge line until they loosen up and begin to work normally. It would be much better if they would have let us do the hinge work ourselves.

How did you go about re-slotting for your new hinges? I haven't tried this yet, but I heard the best way to get the old hinges out is to use a "hot knive". That's the thing from Tower that looks like a soldering iron BUT has a #11 exacto blade for a tip. Very cool tool.

Did you maiden it yet Jon? Nice flyers.... wait until you grease in EVERY landing. That is one of their strong points.

Ernie

Ernie, I am old school on hinging...I just use my x-acto blade in the handle and go about manually creating my slots pretty easily. The slots don't take much work with good CA hinges that just slide in and don't fray. When I used Klett hinges, it was work to create a slot thick enough. Haven't maidened yet, but will soon. Jon

Hi Ernie, thanks for the advice...

I managed to get it runing smoothly....but here is the kicker... as soon as I remove the glow anything under half throttle it starts to run rough and near idle it just dies.  Am I way to rich still on the low end needle?


I reset the low end needle by making it flush with the throttle arm and then trying to lean it out from there.... ....should I just keep leaning it out till it runs without glow?

its a Saito 72....

Yes! Keep leaning it out more and more .... sounds like you are still too rich. When it is running rough, pinch the fuel line. If it speeds up before dying, (which it probably will) then you are still too rich. Don't be afraid to lean it and lean it until it idles GREAT but then dies when you hit the throttle hard. Then you are just slightly too lean... don't forget to reset the top end occasionally.

Keep us posted and get that Stinger runnin good,

Ernie

I'm pretty sure Saito says the low speed should be about 1 mm below the throttle arm. You will know when it's right, my 72 purred like a kitten at idle.

Andy

I have a Webra .50 that needs a home. Hmmmmm....

You might want to move it out on the engine mount a little. Guys are having to add weight to the tail.

Ernie

Hi all

I just found this thread, I got me a Stinger II and It came yersterday, indeed very nice 40 size airplane, not to long ago I got me a Revolver and seen the quality and amount of work they put on that ARF, I decided I needed a home for my OS70 II, with the good experience I had building and now flying the Revolver I decided to look at what new ARFs Great Planes had in the 40 size, to my surprice I saw the Stinger II, I had always wanted to build one of the series buy never made the time so, here I am now with a 40 size ARF on my hands ready to start asembling it

So far I like what I hear about the Stinger II and will be posting pitures and coments of my build [8D]

Carlos R.

Jon

You were looking for a Wasp, my Top Flight P-47 came with these graffics, they may work for you.

http://www3.towerhobbies.com/cgi-bin...?&I=LXWPN7&P=7

This ones are smaller, no wasp on this one.

http://www3.towerhobbies.com/cgi-bin...?&I=LXVXR1&P=7

Carlos thanks for the suggestions...I am leaving the plane as decorated for now. Have fun with your build...the hardest part is getting the wrinkles out of the covering, lol. It will fall together and you will probably maiden before I do! Re your OS 70 Surpass II, I almost put that engine on mine but went with the YS 63 instead. I think you will find the engine a little long, so you might have extra space between the cowl and the spinner back plate, and probably will need a little lead in the tail to achieve the CG. Should be nice power though! Have fun on yours. Jon

Stinger II Maiden!

With just a little trepidation about the maiden due to the Stinger II having my first YS engine on it, I went about making the maiden flight today. It was foggy on the way over, but clear at the field, approaching 50F, and sunny. NOBODY was there, so I set to work/play. I had to make sure I concentrated on fueling and defueling due to the pressure that YS engines operate with. Fuel via the intake line on the side of the fuse and release pressure and catch overflow with the vent line on the bottom of the cowl. I started with the high needle opened 2.5 turns. Used the starter to turn the YS over. Had to fool with higher throttle trim to keep her running, then realized I had not set up the kill switch yet, so I had to turn the needle in to starve the engine and stop it several times. Got the kill set up correctly after fooling with end point on the low end, and the % for kill. Also had to turn the transition needle in about 2 turns when the engine would die at just about any throttle speed when I removed the glow clip. The high needle still seemed slightly rich at 1.5 turns open, but I ran that way for the maiden flight, and was rewarded with lots of exhaust on the plane afterwards, haha.

BUT I was gladdened by the enormous power of the YS FZ63S, and the crazy speed of the Stinger II! The plane needed about two clicks right aileron and two down elevator for hands off flight. Inverted flight requires just a little down elevator pressure. Looks like the plane wants to roll out slightly in KE. The plane whistles at high speed with this engine. Only needed one attempt and landed very lightly on the runway center. The Stinger II slows down like a *****cat. I was about to make a second flight when the prop and spinner took off as a unit without the rest of the plane. I bought the YS used and it came with one aluminum prop nut. On the way home from the field, I stopped at Ace and got two new nuts which when used together will hopefully lock the prop on securely. It was a highly successful maiden and I look forward to zinging about the sky with the Stinger II real soon.

I forgot to take my camera for the maiden, but here is a pic from a couple weeks ago outside the house:

Congratulations on the maiden flight [&:]

I was working on mine almost all day today, mainly working on the engine/cowl set up, it took a few hours as usual to get all that done, in order to cut the cowl neatly I removed the engine's head that worked just fine, really easy to do it that way, the only problem is that I missplaced one of the "O" rings from the push rods covers, so I order a set today to be here by next Wenesday, I guest that I was going to fast on the build so this will slow me down for a few days, other than that everything looks good.

I'm setting Thanks Giving day for my maiden flight. Will post some pictures of the engine set up soon, I have an OS 70S II for power and It took alot of grinding to make it fit the right way.