Tesla1856

I installed a DL-50, so I put mine back with the throttle and rudder servo, connected to the engine much like the throttle servo.

See the pictures on my website. You can look back to page 2 to see more on the throttle.

[link=http://www.vlsdynamics.com/rc/planes/great_planes_yak54_page3.htm]Yak-54_Choke[/link]

gregziemba

yep using 2.4. Can I use metal pushrod if using 2.4? So you can really put the choke in any where that you can find a spot for right?

Kfoster

I have my throttle servo right on the engine box, the push rod (which is metle) is about 2" long. Everything works great and the throttle response is really linear. I do not have a choke servo in, I was trying to save weight.

upperkingjr

My Feedback: (1)

Would a zenoha G45 work well for 3d or a G62 be over kill?

mark nichols

Just building this plane zdz 40 powered, what is all the fuss about Ive just used longer standoffs to get the plane to balance with lipos, its not a heavy plane 12.5 -13 lb with gas should be possible, the new aeroworks 40cc plane is 14.5lb. It needs some thought on building thats all. Im carbon control rods lipos not Nimh and move the engine dont use battery weight. Its a shame that GP dont charge a bit more and give better lower weight hardware. Foam wheels and a heavy UC? heavy wing tube metal servo arms and heavy rods, spoil a nice kit.

Ditch as much as possible forget the instructions and remember you want that prop out at least an 1" from cowl for airflow over surfaces.

Im confident and hopefully will fly in 2 weeks, build lite is the key to any 3d plane.

Just my feelings so far, damn when i finish you can all say we told you so, but there are some people building these at 13 lb on gas, not recommended as a first gasser as it just takes some working out, very nice plane if they ditched the foam and weight out of fuse.

Anyway ive really enjoyed building this plane so far.

Its going to be fun.

Mark

mark nichols

Well the plane is all finished and have been waitng for the weather to break, know the plane is finished and im guessing im about 13-13.5lb need an accurate scales.
Its not the easiest of planes to build but if you went for the stock engine choices it would be easier. The engine servos are in the engine box and i am able to keep
both rx and ign lipos in the main fueselage due to spacing the engine out further. Itching to fly have c of g at 145mm may put some weight to get 140mm probably not
i fly a QQ yak quite tail heavy so im not expecting any suprises, its a winter hack but the weather is just to poor to fly.

Have done taxi tests and the zdz on 21x8 menz is really throwing out some power, she wants to jump in the air.

Mark

Brainiax

I just finished mine. Here are a few pix: It came in at 14.00# even, dry but a little tail heavy. I have everything up front too. I hate adding weight to balance a plane but I guess I have to. Any others with a final weight and engine choice? Mine is an OS200FS. Thanks.

Brainiax

[link=http://www.rcuniverse.com/forum/m_8205678/anchors_8209005/mpage_1/key_/anchor/tm.htm#8209005]Another little thread I started[/link]

mark nichols

Well have lots of flights on the plane and my combo is good in the plane tremendous amount of power, i have no added weight at all no spinner.
So it has a bucket full of coupling and mixed that out. Plane does not keep energy well through maneuvers, i fly a QQ86 DA50 and no comparison. So you just learn how she flies.

But the plane is a nice flying plane and with flying as with all planes you get used to its little problems. Uc is fine just land right, So to sum up build it lite fly with c of g so on a 45 upline inverted it very slightly drops and its a nice plane.

Im enjoying as a winter plane and will be back to the qq when the weather pics up, to be fair ive been flying on frozen fields in minus temperatures and the little combo has been superb, the more the c of g goes back the better she flies.

I reckon this is a superb first large model and the quality is great.

Last note this plane really suffers in a crosswind, but with tailheavy will harrier land no bother at all, lucky i fly from a very small 2 runway field and typically its 45 of either and usually over a small fence on the shorter runway had no real issue s so far. Im under 14lbs all up.

Mark

mark nichols

have you flown on OS200 yet.

Mark

Brainiax

No I haven't because the winter is tough right now. I figure I'll have to wait until spring. I can't believe you're under 14# with a 50cc gasser. Well, there isn't anything I can do about it so I'll do whatever I need to balance it. I figure 6-8 oz should do it for a total of 14#-8oz.

mark nichols

Im running zdz 40 and spaced the motor further out so no extra weight would be needed, i swapped all included hardware for carbon and have used lipos, so im about 1lb heavier than some glow setups, the recommended c of g is nose heavy as in a 45 upline inverted if you let sticks go the plane drops rapidly, im neutral at inverted so slightly tail heavy, but i do have a menjlick carbon spinner which really makes the plane more precise, but i like freestyle so fly without. The OS should be fantastic i have anOS91 in my ef 58 extra and its so powerful its a blast.

Mark

cap10b

All,
Here are some motor shots of a friends GP Yak 54 and a Brison 2.4

enjoy

jds

Brainiax

What's that linkage going up towards the prop crank shaft? Timing? How about the landing gear too. I heard it was weak so I ran a aluminum plate across the inside to help strengthen it and doused it in 30 min epoxy all around the structure. You guy's have any bad experiences?

cap10b

Brainiax,
Yeah that's the old TCSA throttle couple spark advance that was really industry standard before the advent of electronic advance ignitions. Works great, many dont like it, some say it binds but I've never had one do it.

This is not my plane I was performing a 20 hr inspection on it. The owner is an older gentleman that cannot get around like he used to and who is not very battery savy so I deep cycled his packs and did some repairs updates for him

The landing gear is soft but not weak. We have between a group of 4 guys several QQ aircraft Yaks, big and little so as you know his landing gear is quit mushy and QueQi likes it that way. He says he perfers to replace propellers than to rip the bottom of the plane out. Mosts people replace QQ A/C gear with aftermarket but the GP gear seems more firm that the fiberglass ones we are used to.
So far so good.

Great flying plane even the owner can do tail wheel first landings , it slows down so well.

Enjoy


JDS

mark nichols

The landing gear is springy not weak and i would as above rather buy a new prop than a big repair, I have the QQ and this plane and to be honest if you can land you wont have any issues at all, if you have trouble landing you may need a few props im running a 21x8 on my zdz40cc never had any problems but with a 22x8 on a 50 cc you won.t have much clearance so 3 point landings as the plane will slow down to a crawl then just stall, watch this, but with a touch of power it will crawl at a speed you will find hard to believe and 3 point all day long.

Mark

Brainiax

I saw some nice carbon fiber gear a few pages back. Wonder if it's worth the $60.00?

mark nichols

Carbon is a waste of time in my opinion , id get used to plane first before spending on a very stiff uc, unless you find your prop clearance poor, some taxi tests should show this anyway i fly of grass and i prefer some give in the uc. If i flew of tarmac then carbon could be an option but then again if you carbon uc and carbon wingtube you may as well bought a different plane, cost ads up quite quickly. Also it may alter your c of g.

Mark

cap10b

All,
I agree CF gear not needed unless you just have the $$ and want one. I dont think it will affect CG as the mfgr's are usually very conservative on the location. Plus the CG on the plane I worked on is very close to tail heavy and it flys good with no bad habits
and no snaping on landings or during hard pulls on the elevator.

Go for it !!

jds

Brainiax

Ok, understood guy's. No prop issues since I'm using a 18" prop and there's ample clearance from the ground. My field is a little bumpy is all. I just can't wait to fly it but I think I'm boned until April.......[]

Macrizzleh2

Looking at getting a YAK, and putting a DLE-55 on it. I am new to gasers so, any input would be great!!! The engine is about 48 oz.

Super08

My Feedback: (2)

It will work very good on the Yak.

mark nichols

Should be good, this plane flies superb on the zdz40 rv, im running a 21x10 mejlick pulls better and the plane flies great its keeping the weight to a minimum with this plane and it will fly lite, mines way tail heavy and im liking it a lot its had 5 gallons through it so has been well tested.

Mark

Uncas

My Feedback: (1)

With a gas engine this plane it will be a good sport plane but do not expect good 3D performance as it is pretty heavy. When and if I rebuild mine I will likely go with an OS 1.60 and take substantial steps to minmize weight and not really even consider serious 3D stuff. I would not put a gas engine back in this plane because of the high wing loading. With a DLE 55 you can power a much larger size airplane. I would recomend the GP Ultimate Bipe, which flys much lighter than the YAK due to its greater wing area and is one of my favorite planes or the GP Reactor which has enormous wing area, though I have never flown it. If you must have a YAK I would look at EF or PAU with that engine, though I really like the new WH 88 inch Edge. These planes are higher priced and it is hard to beat GP for value.

Good Luck!

mark nichols

If you dont have a YAK already buy the EF yak, i bought this one as awinter hack of ebay instead of flying my QQ yak at our small winter field. The GP yak will fly 3D well but its got to be lite thats why i went zdz40 spaced the engine further out and ran with no spinner and removed a lot of the firewall and put my throttle serov jut rear of the firewall. The plane flies well if built right, putting a big engine in this plane and spinner is not a great idea but if youre a sport flier then you will enjoy it.

For a 50cc plane i would go ef yak, extra or Aeroworks, EF's are lightly built and if you have a bad landing you may be minus a plane, the GP would make a good solid first larger plane. My GP YAK is superb i fly the planes listed below and for a quick flight or bad weather day plane the gp goes out first. I do see the AW flies well although it is heavier also.

Mark

QQ Python ZDZ80
QQ YAK DA50
GP YAK ZDZ40
EF EXTRA OS91