Let me think, a couple Majestics, a few Enigmas, some Evolis, I see a Supreme maybe, a Suxess, a couple of 2.65 Extra 300XLs, perhaps a 3 meter ZN Extra, some Synergys, some Hydeaways...actually, that is just some background of the ZN B (B for Belgium) factory. Only three of the wing sets are actually mine (yummy). Those are the sheeted stock. The cut core stand is on the other side of the wall and it is loaded too. Every where you tunr is airplane airplane, wing, wing, wing, wing, stab, wing, stab, rudder...it is very easy to get a balsa/foam/Kevlar/carbon fiber overdose in there.

Matthew,
there are about a dozen Syn90s flying or getting ready to fly around the UK, I just have no idea where the folks are. I'm sure somebody will fess up and give you a demo if you ask.

Mark

Mat and Chris,

I answer to you question, get one!!!

Set-up YS110, hard mounted, with hatouri pipe and header. A set of hitec digital servos on a 6v 2700mAh Ni mh, which is mounted in the rear fuz, approx 2” from the TE. CoG is “in there some where”, set as instruction sheet off the Znline web site, I think 230mm from TE. I recon for 3d it could still come back some more. IMHO the plane is very good. Mine came out about 7.5 lbs with the 110. I hade problems with the engine, this was chased down to fuel starting to go off and a doggy check valve. It was leaking air so wasn’t pressurising properly.

Now I have a reliable engine I am now stating to explore the capabilities of the plane. The engine has now had ½ gallon though it and it is getting better all the time. I am running a 15 x 8 and it seems to fly the aircraft a little too fast (fine for pattern though). I think for 3d a 16 x 8 to 16 x 6 will be better. The 6" pitch may let the engine over rev though at high speed.

The plane needs a fare amount of runway to take off (I fly off grass). More than I would expect. I think that it is down to the angle of attack of the wing and the 8” pitch of the prop. In the air it is a different story. It presents very well and is happy flying fast for pattern, will pull round a vertical 8 at ½ power with ease and the 110 just keeps pulling. As for 3d I am still investigating this as I trimming the plane etc. but every thing I have asked of it, it does very well. K.E. Loops KE. Side slips-elevators? at 0 mph (the side slips need a fare amount of elevator down but for normal KE there is no coupling), flat spins, Loads of high Alpha stuff, upright, inverted, and on it’s side. Haven’t tried rolling harriers yet as I can do them. Prop hangs are very stable, but as the pitch is high and the diameter smallish I am using more power for this manoeuvre then I would expect. I think with the engine looser and different prop there will be no problem. It will slow down very well; I am keeping the landings fast at the moment until I am happy with the stall and flying off the prop at low altitude also the 8” pitch doesn’t help.

After 8mins of flight I am using about ½ of the 14oz of fuel. ( I don’t normally fly over 10 mins) So I guess a 12oz tank would be a good option, save 2oz and will fit better.

Over all: very very happy. It is the best aeroplane I have flown…. I think an OS 108 or 91fx would be a very good alternative, to the ys110, running in the same rpm band as the YS.

Cheers

Kris

Thats what I want to hear. Just waiting for the last bits and bobs and I'm flying!
Robert.

I've been trying to contact you for nearly a week! The e-mail address you posted (post# 177) returns my e-mails as "undeliverable! I tried a personal message last week & no reply!
I have a serious issue with my Synergy 3D & need to discuss this. Please contact me via e-mail, Personal Message or post some way to get through to you ASAP!

for Alvin, try
[email protected]

Worked for me..

Was able to make contact through the address you gave me. Apparently he has been experiencing difficulties with his previously posted (.com) address. Alvin was quick to resolve my problem. Thanks very much to you, and... thank you Alvin!

Ed at ES Composites and I agree that this airplane will be a real fire cracker 3d performer - he has dropped everything to create a light carbon fiber pipe to be used in conjunction with ys 91 -110, it will be 14" long and weigh about 48 grams and will be very quiet for hovering. check his website for availablity and pricing

www.escomposites.com

I am a big fan of ES pipes. I hope he has them done before too long. Saving a couple of ounces here and there adds up quickly.

Mark

Yesturday I was testing ed's new double expansion, reverse flow cf pipe for ys 120 - you can't hear anything - homes 100 yards away had no idea we were flying.

I have a OS 91 FX in MY Synergy. Took it out for my first flight today. Now realize it is second hand to me and I have very little 3D experience. It flew wonderfully! I took the recommendations of digital servos but just couldn;t wait for my order for digital rudder sx. STILL, with a Fut 3004 BB (43oz-in) it would do a Knife edge loop from level flight! ONLY problem I had was on 2nd flight, the engine died and so I Harrier'd in almost to the RW. dropped the nose to land and didn;t have a whole bunch of forward speed left so pancaked it in the RW. 'Course it broke the LG plate away...No beef there!! Will get that fixed WITH some tri-angle stock and a little FG cloth! Waiting on my Genesys muffler & header to keep it in the belly pan for next weekend (I hope)!
I can see it already, This is going to be a real fun plane to fly!!
Bob Severance - AMA 7989 LM, CD

Watched the Boy test fly his yesterday.....stunning, can't wait for mine, hopefully ready in the next few days.

The YS110 seems to work well on the standard stubby exhaust, saving the hassel and expense of manifold/pipe.

Has anyone gone for just one elevator servo?

What is the best prop for prop hanging and 3D with OS 91FX, something like a 17x6 ??? most people seem to use a 15x8 but surely the pitch is not fine enough and thrust goes up with prop diameter, not so?

Rodb,

I am running a YS 110 on 15 x 8 and it is too much pitch, graet for pattern though. Will prop hang ok on the 15 x 8 though. I am going to try 16 x 8 and 16 x 7 next. I don't think there is enough clearance for a 17" prop.

Kris

our runways are bumpy and sometimes have long grass (when they havn't been cut) so I guess bigger diameters are out then. I get the best results with a 12x6 on a 53 irvine in an Xtreme Lite, finer pitches just don't work as well so I am hoping the same thing applies to the Synergy. I guess going to a 16x7 may be the best option then. 16x6 may get the revs too high with a genisys mini pipe.

Re synergy 3d I just recd mine recently but I am perplexed by the wing dihedral or rather the lack of it. The wing is already joined and there are no instructions with the kit. Could someone please confirm the dihedral actual on Cplrs plane. Thanks Paul.

roo,

Don't know about cplr's setup, but mine ke's with no coupling, only requires rudder

Kris

mine needs about 4-5% up elevator with rudder, but absolutely no aileron mixing. So whatever the dihedral is straight out of the box, it's spot on.

I am using an APC 16x8 prop on the 110, burning Wildcat 30, which gives superb vertical. I have flattened the throttle curve slightly around 1/3 to 1/2 throttle though to desensitise the throttle response around the power level required for prop hanging and that worked really well. With this much power the hardest part I find is actually keeping it from climbing...

This is a great thread for a great plane!

Question:
Would anyone happen to know the proper distance from the front of the firewall to the engine drive washer?

I picked up a slightly smashed Synergy and rebuilt the nose and bellypan better than new! About to mount the cowl again and I dont have the instructions. Looking forward to getting it back in the air soon.

The thin canopy was torn so I dry fitted the old canopy on my G-Trick, almost an exact fit. So I have a G-Trick replacement canopy on the way for this Syergy - a little Rit dye and you'll never know the difference.

Thanks for all your help in advance,
Scott

PS - here's a shot of the rebuild process

and with the belly pan sheeted...

and covered...

I have the paint for the cowl coming - I added some reinforcing fiberglass on the inside and filled some holes for a previous motor installation. Canopy 'tear' is on the other side...

Sorry for all the pics but I'm quite proud of the reconstruction given the fact that I had no plans to work from (just the old formers).

Nice work Swill.....

Hopefully you will not smash it like that last bozo......

Pugs

There are no instructions for these planes. You just use the cowl as a guide for the engine thrust washer to firewall measurement.
Mine seems to be right about 6". There are shims used for down thrust and right thrust. I don't know how much down or right thrust is used, I just glued on the shims.

Jim

Try a little less than 145mm, thats what I have, and it could be about .5-1 cm or so closer. Nice job by the way. Mine looks worse than that already and it has yet to fly!

That distance is from the back of teh mount to the prop driver.

Hi guys,

Also building a synergy 90, I've come up to a little 'looks not nice' problem. I installed the engine with the wooden platen (right and down thrust), but when I fit the cowl, the spinner back plate doesn't align with the front of the cowl....

Is this normal or do I have to put on some more right thrust to make a perfect parallel alignment?

...or I made a mistake?


Thanks Pieter