I had the elevator set at 25 % expo and 1/4 in of travel on low rates and it did snap out of a tight loop with the airspeed low, It didnt feel snappy , but I did move it down to a little less than 3/8. Hopefully We will have better weather this weekend. So far I think the gms and the extra will be a great combination

Hows the weather Glowplug?

Any flying in the near future??

I just finished installing the tank in mine... I used a Sullivan FlexTank RST style. 12oz.

It went in with about a 30 second modification to the servo tray and little effort at that!

Its the perfect shap to run right up to the front fire wall! And can be heated with a hair dryer to make an even better fit, but I didnt feel that was needed..

I wanted to pick your brain for a second! You said you used the 8oz tank that came with the kit...Did you build it with the fill tube aswell?

(feeling stupid right now!!) I have never built a fully enclosed cowl jobby, so I never used the third tube for filling! Where in this cowl should I run the filler tube out?

If I run it out the bottom, would this not tend to cause a syphon effect and drain the tank?
(REALLY feeling stupid now!!)

All my planes have open front ends, so the fule issue has never crossed my mind? And the directions with the kit say nothing about it???

The 4 stroke fits beautifully in there, and things are really starting to come together!
Now I have to control myself and wait for the snow to melt.......Dont think extras would do well with skiis! LOL

Thanks.
Rob.

Rob,
I got to maiden it today!!!
SuperStick was right on the money with his flight report!! The aerobatic capabilities COMPLETELY surprised me! With the relatively small control surfaces, I thought the plane would be kind of calm.....not so! This thing snap rolled like a blur, and I was able to get it halfway through a knife-edge loop. Spins are VERY tight (I didn't try any flat spins yet). It is definitely sensitive on the sticks......and it WILL snap (quickly) with too much elevator....be easy on the stick. I didn't notice sluggishness with the ailerons, but I did have the throws set higher then recommended. The GMS .76 pulled it very well....I mostly flew at 1/2 throttle.

I think I'll be changing mine too........I flew the plane for only about 6 minutes.....than ran the plane on the ground for only about 4 more, and the tank was empty.....I think I'll install a flew tank also.
I did build mine with the fuel tube......and my filler line comes out at the bottom of my cowl.....since I don't like some of the problems that can't come along with remote fuelers, I use the DuBro "Fill-It" Fuel system. It's basically a set of fuel line plugs for the 3rd line......astro, the line must be plugged or else the fuel would come out....and you wouldn't have fuel pressure either. I'm looking forward to flying it again!

Congrats on the first flight! I'm glad to see all went well... It sounds like you could make good use of the larger tank!

What size prop are you turning?? I am going to be using a 13X6. I am also trying to go with a single elevator servo..... Not sure if its the right way to go, but it saves a bit on room, weight, and screwing around with the left and right throw setup....

If it doesnt work....I guess I'll be the first to know! I will lust solder the 2 rods together at the servo and go from there.

Thanks for the info on the fuel deal! I thought it seemed a little odd...... My first flight would have been a wee bit shorter than I expected!

By the way.... I know the CG is 4cm from the lead at the tip.....Has anyone transfered that mark to the side of the fuse?????

I like to use my CG machine to get them very close, and its not gonna make the trip out to the tips! LOL

Well, its -27 C here thismorning, so its back to the building table for me!

Have a good one and enjoy your next flight!

Yeah what is the CG of your model at t5he fuz cos i think mine is way to far forward. my want snap it just does a barrel roll.

I just finished moving the cg across.

I calculate it to be 10.3cm at the fuse...

It seems to be following the main spar and works when you run a string line from tip to tip...

Thats the number I am using for a normal set up....

Thanks Astro! I'm using a 13x6 APC prop, and yes, I will be changing the fuel tank very soon!

I didn't measure my CG at the fuse sides, but after I balanced it at the wingtips, I balanced it at the same part of the spar next to the fuselage sides.....if you follow the spar, which is straight, you'll be OK.

I am using one servo for the elevator. I am using 2 wheel collars and I silver soldered in between the collars. I like the hangar 9 fuel dot, I found the fuelers that shut off flow to the carb when fueling are very restrictive. I am using a 2 line system but may be going to a 3 line because i do get some bleed at the carb when filling. congrats glow plug, Looks like the plane is going to be a good one.

I will be turning a 13X6 at the beggining.

How is the vertical on your plane??

Super.. thanks for the tip on the single servo! Great idea! Never crossed my mind to try that!
I always wrap the damn things in wire and solder then! Your way is much better!

I picked up a Sullivan 10oz Flex Tank yesterday and installed it last night.....it was a VERY tight fit, but I was able to squeeze it in with no modifications.

SuperStick, I was using the "large" I.D. fuel lines with my GMS .76, but the plumbing that came with the new Sullivan tank was too small for this tubing, so I switched it to "medium" I.D. fuel lines.........what size are you using for yours?

I am using the blue tubing from great planes it is medimum

Great, thanks Stick. I'll probably have to re-tune the engine since I changed the tubing.

Hi guys its the wolf again , well The day came when I finally got the extra out of the house and to the field .Fired up the 91 fix I had in it for a power plant and let it run a tank thru it to break things in a little .Well after a few engine adjustments and some double checks to the plane I filled it back up and taxied out . did a few runs up and down the strip to make sure the tail wheel was tracking ok and then off into the blue I went .The plane flew well with almost no trim I think one click on the ailerons no biggy . I didn't push it hard the first flight just some loops rolls hammer heads thats sort of thing, at half or less throttle.So far so good !Then comes the mandatory part we all have to do, the dreaded landing on the first flight .I lined up with the runway eased off the power and the plane was doing fine until the last 3 feet off the ground I ran out of elevator ,lucky for me it was just a bounce without any damage.So I added just a little more elevator than what I had and again went over the plane to make sure nothing had came loose.and up I went again , this time about 3 mins into the flight my trim changed alot I had to add several clicks of up elevator to keep it level .In fact I had very little elevator control so my thoughts was to get this bird on the ground ASAP . Well this plane does not land so hot when you don't have elevator I did get in on the runway with a huge bounce and when it went air born again the side wind grabbed the wing and flipped it upside down Needless to say it came sliding down the runway (asphalt) on its top ,really added to the looks of the plane alot *L* So I walked out and gathered it up took the wing off and to my surprise one of the Allen screws had worked itself loose thus no elevator on one side .As long as I've been in this hobby I knew better than to use them things but I thought HUmmmm well they should work ok .WRONG EZ type connectors belong on park flyer's not gas planes *L* I would also suggest to anyone that used the plastic connectors to change them out also.
All and all though The planes flys well and for the money its a good deal.. OH FYI for those that didn't already know this topflight luster coat true red is the exact match for cowl on this plane I was able to just sand the bad place off prime it and do a spot job,a little buffing and you couldn't even see it .For red thats unreal . I wish you all many happy landings
Cyberwolf

sorry to hear that wolf [:@] Glad it wasn't as bad as it could have been.....and I'm also glad that I'm using 2 servos on my elevator!

Mine is in the shop now too..........motor quit on take off at about 40 feet up, at a 45 degree angle........thought I could get it back, so I turned around, dove down to pick up speed, went to level off and had nothing.....turns out that I had a 10-15 mph tail wind, so my airspeed wasn't sufficient to fly.....I was below the stall speed when factoring the tailwind.....I should have kept it into the wind and let it float into the woods, but it's hard telling yourself that when you think you can get it back on the runway.
It hit the asphalt at about a 40 degree angle.....the muffler took the brunt of the impact, and broke right off......the spinner is scraped up, but can be buffed, the cowl is a little scratched, the firewall and landing gear area is busted up pretty good, but definitely fixable......the plane hit VERY hard....I thought it would be sticks, so I was pretty happy. Should have it back in action in a couple of weeks.

Hate to hear about you guys having the sky gods against ya. So far my biggest problem has been breaking the landing gear. I hate metal bolts on my models with a passion and I changed the gear bolts out to 1/4 20 nylon and unless u grease it in they break, After about 6 broke gear bolts i am going to change out the landing geat with a one piece unit. I havent got used to this bird yet but it does seem to want to land pretty hot. I will say i do like the bird. I put the decals off the graupner extra. THe seagull is a knock off of the graupner and you can get the decals for 12 bucks from hobby lobby. If you want to put the checkerboard on the cowl i would recommend to cut the squares out individually and then clear coat them ,putting the decal on in one piece is a real pain I gave up after 4 hours.

I am using one servo on the elevator, I use 2 wheel collars to hold the 2 wires togther then i silver solder in front, in the middle,and at the end of the wheel collars.

well my grand plan to replace the landing gear wont work, the fuse is 5 in wide and there isnt a gear that will replace it. What I did was take a piece of 1/4 square hardwood and screwed it in between the split in the two gears then I split the 1/4 hardwood in two and ca it behind the gears next to the front of the former that the wing dowels in to havent tested it yet but it does keep the gear from moving.

I might of missed this but what muffler did you use on the .91FX?

I don't know if this is a problem in all these ARFs. My Seagull extra 300s had a big issue. The main wing was not balanced. I used the same servo and connecting rod setup on both sides of the main wing. The left side of the wing was heavier, could not figure out why? Checked everywhere nothing to be found in the main wing that would add weight to the left side. So sadly I was forced to add 15 grams of weight to the right side of the main wing just to balance it. I think this is why this plane likes to snap around itself when you try to use full elevator. Let me know if you guys have the same issue, do your main wings balance correct????

Thanks

Matt

Wings rarely balance as built due to different wood density; too much glue on one side, etc. The important thing is for the whole airplane to balance correctly side to side as well as front to back. I've had two of the Graupner Extras which I think are the same as the Seagull and I had to put about a .5 oz of weight in the left wingtip on both of them.