Synergy 90 Flying Reports: Post your experience flying here
 

As the basic Synergy thread was getting long, I though it was time to start a thread wholey on the flying aspect of this airplane. Please leave construction questions and or side comments to the other thread and lets hear about why you purchased it...how it flies. I'll have copied and pasted and edited my post 86 from the other thread to start.

(From post 86)

We went flying today.



The setup on Syn90:

YS110FZ
Futaba 9550 servos on ailerons, elevators, rudder and a 3102 mini on throttle.
Hatori pipe and header
880mah Ni-Mh

All throws were done per CPLR's setup tips as given on the PDF file I posted about two posts before this one.

In a word, Omigod. Fabulous. Monstrous. Wow. Incredible. Awesome. All that and a bag of chips.

First of all, the motor pulls this thing skywards like a rocket. For those wondering, the YS91 will be fine. The 110 is outrageous. After about a minutes worth of running on the ground, we took it into the air. First flight was made without bellypan to allow extra cooling.

The first flight started off with a short takeoff run, wheels up, pulledhrottle to idle, hit the verge of a stall, then firewalled it and rolled upwards about 200 feet at perhaps 2-2.5 rolls per second. No better way to test fly, is there???

Knife edge is effortless, and I do mean effortless. JP pulled it around and did the prettiest knife-edge slip almost to the deck, gave a little throttle and she just soared on by on the high alpha knife at about 20mph. Next pass was from upwind, and just past center he pulled a medium wall into a series of quick torque rolls. This thing torque rolls easier than anyhing I have seen in it's category. He did not try any stationary hovering, but I can see that that will be easy too. Tail slide, piece of cake. Stall turns...more rudder than you even imagine. I can't wait to get mine together an try the famed pinwheel (an often talk about manuever but I have only seen it done once, and that was Steve Stricker during the 98' TOC). Knife edge loops, and another, and another, and another. He did four in a row, so predictable that the fourth ended only about 10 feet off of the ground, and the wings where absolutely perpendicular to the ground. Although it was pertty windy, I did not really see any need to start playing with aileron differential. The rolls were nicely axial left and right (we did fill the aileron gaps with clear Oracover). After the big manuevers, he settled into some elevators, harrier rolls, a little precision stuff, some really fine looking FAI style spins. This thing 3Ds on rails.

NOTE: The CG was about 4cm in front of CPLRs setup sheet. Yesterday, I cut a small hole in the tail and mounted the battery to the stab. It looks fine and not at all out of place. This brought the CG right back to the 230mm from TE. The entire flying report was with a far forward CG and it was incredible. I shall report again after the next time. It should be even better (hard to imagine for me).

Oh, mine arrived today!!! That would make it about 90 days.

I'm also going to splurge for the Camcorder. This airplane has got to have some videos posted onto the web.

Enjoy,
Mark

Video!!
 

Mark,

We are all waiting anxiously for the videos and flight report :cool: :cool: . Please do record some videos.
Great idea to start a new thread... Matt

Synergy 90 Flying Reports: Post your experience flying here
 

The snaps are also very precise, and sharp! Everything one can ask for....And it does a good job with P-03 too! I have to agree the knife edge performance is truely breathtaking...

Flying update.
 

OK, we flew with the new CG today which is 230mm in front of the TE. Again, here is the combo so you can plan your servo weight strategy. Futaba S9550 servos, weight 1.6 ounces each, (2 in the tail, one each aileron, one for rudder in the fuselage, S3102 mini three inches behind the firewall for motor), and the 880mah Ni-Mh battery mounting on the stab. Motor is the YS110 with APC 15-8 and Tru-turn, light weight spinner.

First of all, this CG location is very critical. It does not forgive over exuberance on the elevator. Control was maintained to ultra slow speeds, but the airplane is very pitch sensitive. We shall move the battery back onto former F3 (just behind the wing mounting block), and I shall take the mini servo out of the nose and place it next to the rudder servo. There is also room to mount the motor about 1cm reawards, but I will not change that as that would require changing cowls or filling holes or living with an ugly extra set of holes. Instead, we can use a few grams of lead if need be, or install a couple of S9402s in the rear which weigh .3 ounces more each. We are going now for a CG of 240mm forwards of the TE.

By the way, the YS110 is turning the 15-8 at 9800 RPM with 20% Coolpower. We think we could turn the needle in for another 100-200, but why bother, it goes like a rocket ship.

OK, I'm giong to recommend a modification here. We had a firm landing today and the bottom former broke away from the fuselage sides. I will add three pieces of tri-stock to better anchor the bottom former to the fuse sides and to F2. Two pieces about 2" long, one on each side, and then another piece behind the gear to F2. If you like, another can be added at the firewall location. Just keep these three or four pieces light. A few pieces of light weight balsa in these areas will increase strength incredibly, so there is no need for maple stock and JB weld. The attached picture should clarify my advised modification.

See you at the field.

Mark

Synergy 90 Flying Reports: Post your experience flying here
 

Hi Mark,

So, 23cm from TE is too tail heavy and make the landing interesting, Hu?? <G> Thanks for the input, I'll shoot to start at 24cm then. Question: Isn't the 880mAh a bit limit with all the digital you're running? Are you recharging between each flight?

Again, good input.
Ben

It was the pitch sensitivity
 

Hi Ben,
The landing was straight down and really fairly stable. It was the pitch sensitivity that makes it advisable to go to 240mm. Also, it was pretty windy and any time JP turned to down wind it looked like it wanted to snap, although it did not.

I think it is wise to start a little forward. Perhaps with lots of expo and in lighter wind conditions the 230 is great, but why push it when the airplane was so 3D'able at 270mm. The 240mm will allow all plus make it a little easier in pitchyness.

We were concerned on the battery issue, but after two flights we charged and it only took about 250mah. It looks like the proper method will be four flights and charge. There is no reason why not to use a 1100mah Ni-Cad or a similar capacity Ni-Mh as keeping the battery behind the wing bolt block seems to be the right thing to do.

Bon Flying!!!

Mark

I hope some of you get to go flying this weekend.
 

For those ready to fly this weekend with the Syn90, I look forward to reading about the experience really soon. I have heard from several proud owners from the USA (you number just a few, but hopefully many more will be imported) who are ready to fly, so I cross my fingers for your weather reports.

The weather here is beautiful, but tomorrow we are heading south to Germny for one of the largest model expos in the world. Hopefully Sunday will have us outside flying.

Have a great weekend at the field.

Mark

Synergy 90 Flying Reports: Post your experience flying here
 

Well,
The weather finally cooperated enough for me to get in a partial flight on my Synergy 90 3D this afternoon. I say partial flight because the YS 110 died on me in flight after about 6 minutes or so. I think it overheated, leaned out and died. I thought I had a good amount of the front of the cowl open for air flow, but will need to open it a little more I think.
From what I could tell of the 6 minutes that I did get to fly it, I'm going to like this plane. I never did take it off of low rates and didn't try much on this first flight.
I did do some knife edge flight though and all I had to do was barely touch the rudder to hold knife edge flight. When I pushed the rudder stick over it very quickly did a knife edge loop, This was still on low rates!
I also did some loops and rolls, the airplane tracks very good as we would expect. I took it up high and tried to stall it, but it just kind of floated on in slow flight.
The dead-stick landing was no problem and thankfully uneventful, probably thanks to Mark's recommendation of the CG at 240mm.
That is where I've got my CG and the plane felt good with it there.

I look forward to getting some more flight time on this plane and trying some 3D flight with it. I'll let you know when I do.

Jim

Synergy 90 Flying Reports: Post your experience flying here
 

Jim,
good to hear that everything went fine.
Mine is still on the board, too many things going on between work, family, business trip, golf,... will take a while to get it finished.

I'll keep you posted.
Keep your comments coming, it's good to hear them!
Ben

Synergy 90 Flying Reports: Post your experience flying here
 

Anyone tried a 91FX in a Synergy yet?

I'm thinking of going this way rather than the YS to keep it easy and simple.

Synergy 90 Flying Reports: Post your experience flying here
 

Come on guys, where are all those flight reports??? Someone has to know exactly what this thing will do. Anyone have new pics?

Thanks,
Will

Synergy 90 Flying Reports: Post your experience flying here
 

Is there going to be an instruction manual pdf to download from ZN site?

Mark?

After a good look at mine I'm pretty happy with what I've got for the bucks spent. I did notice that the covering is scuffed quiet a lot, ask the factory to take the scotch brite off their covering irons!! Replace the canopy and add some instructions....you've got a pretty unique and desireable piece of kit.

Instructions are on the way.
 

I have all of the good photos and I'm working on the manual. A few weeks and we will have it available on the website.

You will love flying it.

Mark

Synergy 90 Flying Reports: Post your experience flying here
 

O.K. guys,
I opened up my cowl a little more and opened up the air exits a lot more and the YS 110 is running good now. My Synergy 90 3D came out at 7lbs 4oz and this engine pulls it like a rocket!
I got 3 more flights in on my Synergy 90 3D today and did some flying on high rates. Wow!
I did a couple of snap rolls today which were just unbelievable. I don't even know how to describe them, very wild and violent to say the least. Any normal plane would have just busted into pieces. I also did a couple of blenders with the same result. It's just unbelievable and you have to see it to believe it.
The plane is not good at waterfalls. It would just snap out on me. In fact the plane snapped out on me several times today when using high rate elevator throws. I suspect this is normal for a plane of this design.
It definitely excells at knife edge flight. Knife edge loops are almost effortless. It does a great knife edge spin too.
I never did get it into a good flat spin today, but I need to experiment some more to maybe find the perfect mix of throttle and control inputs.
For normal flying it tracks like an arrow and is very smooth. The trim scheme looks real good in the air.
Landings are easy and the plane will slow up good without stalling.
My CG is at 240mm in front of the trailing edge. Inverted flying is hands off with this CG position.
I tried some hovering today and had a little bit of a hard time hovering because the plane hovers at less than 1/4 throttle. I was not getting good throttle response at this stick position. I will try to use the throttle curve on my 10X TX and see if I can fix that. I'm also wondering if maybe I'm not getting sufficient airflow over the elevator and rudder in a hover because the engine just is not moving much air at the low throttle position required to hover.
I enjoyed flying the plane today and look forward to flying it more.

How about the rest of you? Anyone else got theirs flying or getting close to being ready? Let's hear what you think.


Jim

flying
 

HOPE TO FLY IT NEXT WEEKEND. MY YS110 IS TURNING AN APC 16X6 10, ON 30% MAGNUM. I THINK THIS IS TOO MUCH FOR THIS ENGINE. I A AM GONING TRY AN APC 17X6 TO SEE IF IT WILL BRING IT DOWN INTO THE 9,000 RPM RANGE.

Synergy 90 Flying Reports: Post your experience flying here
 

Jim,
with the YS110 in the front and the Hydemount, did you have to add any weight in the back to achieve the 240mm CG? What servos do you have on the back and where is the battery pack (+what size is it?).

Trying to plan ahead if I should move the engine as much back as possible.

Thanks

Ben

Synergy 90 Flying Reports: Post your experience flying here
 

Ben,
I did not add any weight to my plane. I have a 1900mah Duralite Plus battery about 10-12 inches behind the wing TE. It was not easy getting it in there, but it is taped to a stick and slid in place between a horizontal brace and the top sheeting of the fuse.
I have JR 8411 servos on all my control surfaces.

Hope that helps.

Jim

Synergy 90 Flying Reports: Post your experience flying here
 

Thanks Jim,
that's good info. It tells me that I should basically move the engine as much back as I can in order to bring the battery back to the wing area. Because the kit is made of wood and should absorb the vibrations better than a composite fuse, I am enclined to hard mount the engine using the supplied mount (I might regret it long term, but who knows!!). I plan to cut the plastic top portion of the mount square plate so that it opens the space for the YS chamber and moves the engine back by about 1.5cm.
That should bring the battery back, maybe not by a foot, but I'll be using a Ni-Mh 1650mAh 5 cells battery that will be heavier, so it should be a flush.

Thanks
Ben

Synergy 90 Flying Reports: Post your experience flying here
 

I flew my synergy with os 91fx on the weekend, I dont have the pipe from weston yet so i left the cowl off and used the standard silencer. It really does fly brilliant, I had the c/g quite a way forard but it can still do very nice 3d stuff. It is fun to put it nife edge, slow it down and let it drift backwards in the wind!

here are some pics...

Synergy 90 Flying Reports: Post your experience flying here
 

another

Synergy 90 Flying Reports: Post your experience flying here
 

1 more

Synergy 90 Flying Reports: Post your experience flying here
 

Hammbone, do your JR 8411's buzz all day? I have them on the Funtana, and the rudder servo starts jittering back and forth real quick. If I put a bit of preasure on the rudder to stop this, the servos stops jittering. I saw this happen to a guys 31%, and he didn't even take notice of it, so its probably normal.
Robert.

Synergy 90 Flying Reports: Post your experience flying here
 

Robert,
It is normal for the digital servos to buzz, but they should not jitter. I have seen this before on rudders with pull-pull set-ups and a digital servo where the control surface will actually oscillate back and forth because the servo is seeking center. When I have a servo that does this I send it back to JR and get it fixed or get another one.

Jim

Hinges location
 

I was planning to hinge the surfaces today but I just spent 20' wondering where the slots are located. I know that they are done and are back there (I can see that the rudder post has 4 slots and found the corresponding one on the rudder) but where are they for the stabs and ailerons??? The covering is on so tight that I can't see or feel any slot in there, and I don't want to cut the covering all the way through the bevel area to find them.

Can someone measure the hinges location for the ailerons and stab and let me know where I should stick my X-acto in?

Thanks ahead.

Ben

Synergy 90 Flying Reports: Post your experience flying here
 

Ben,
I just cut slots where I wanted them on my elevators and ailerons. I don't know if the factory cut slots or not.
Maybe someone else found them and can help you.

Jim