Quark 2M - Back to cutting innocent trees!

[Richard Boyd]

Hi Miki, I have 40mm travel in my ailerons and it is very good, John has 30mm and it also good for smooth aerobatics. It really comes down to what style of flying that you do. Even with 30mm travel you will have responsive aileron.
Use duel rates and reduce your throws for light air flying.

I think you will have no problem setting up your plane if your building is anything to go by.

I like the colour scheme you ordered. this will be super cool !

[Fred]

Hi Miki,

I don't know what I have on mine for throws. The maximum I could get, but 30 / 40 is about right. No differential of course.
As for mixes, you can use snap flaps. I don't really see the need on mine (have the mix setup, but never used it) as the SB profile don't really need it. But That can be tried (I'll give it a shot anyway, just to see what can be  improved).
Note that my Quark fly inverted with almost no push on the stick (maybe 1 or 2mm, just enough to remember I fly inverted  :lol: )
For thermal, you can add 2mm camber, but keep in mind that the sb profile already have camber (1.26%) so is pretty decent in light condition s as is.

Anyway, I am a bad example for mixes etc, as I usually never use them.

Talking about the Quark, a guy is doing it with splitted ailerons for flaps etc. I'll keep you updated of the progress  

[miki.r]

Another Quark is ready for maiden!

Although I didnt finish it before the weekend it was no problem - the weather was very british in Donovaly so absolutely no flying! Instead I took my time to get a good covering job and I am very pleased with the result (but it was three evenings work to get it all done - covering can be very time consuming... :?: ).
AUW is somewhere around 1,4kg, dont know where all the weight came from, but I also needed more lead than initially assumed... But for a fully sheeted wing and a sheeted stab it is OK, 1,2kg should be possible if desired. As I don't really like to fly in light wind I plan to add some kind of ballast to get it up to 1,8kg for the heavier days. And the stabs and wings/ailerons are really huge...!

Waiting for good wind and weather now...

Fred: please keep us informed about the flaps/ailerons version...  

[Fred]

Now that's a nice one!  :clap:  :clap:
Very very nice Miki, great job on the finishing!

At 1.4Kgs, you are still way lighter than mine. Mine fly without any problem in light winds. The ballast option is a good idea, as I like an aerobatic glider to be not too light. More inertia on the vertical moves  

Fingers crossed with the maiden flight, and really hope you enjoy it!  

I'll keep you updated on the full house Quark as soonn as I have some news  

PS : George, how is your Quark build going?  

[alibodin]

Miki,

That model does indeed look beautiful. You have done an excellent job in the covering and building. Makes me impatient to start mine when the kit is available. What servos did you use in yours? Hope the maiden goes well.

Alistair

[miki.r]

Thank you,
I've got HS85 MG on the ailerons and Spektrum A4000 for rudder and elevator.

Weather forecast for the weekend looks promising... :twisted:

[Richard Boyd]

I hope your maiden will be special with your beautiful Quak plane.
Weather is still not good in the North of Ireland so flying is a no no this weekend.

[Frederic]

Hello friends,

 I am pleased to present a glider directly inspired Quark2m but profoundly enhanced: The Quouèrk, by HollandModels (Correzian traditional factory). The Quouèrk (pronounced like the cry of a hen that crushed) kit is a fully cut by water jet.
 The kit:

 CN with the system of the nozzle water jet cutting:

 As you can see from the picture, the water jet cutting leaves a blue mark on the wood  that fades after a few hours.

 We are doing tests CNC (Cat Natural Cutting) that appear to be very promising ... Then we would change the name of the glider: Quouirk ... (like a cat being crushed)

 Soon, the beginning of the construction.
 Note: You can not sell the kit for now, it is forbidden to send any material from the psychiatric hospital.

Big Kiss !
Frédéric

[Fred]

:lol:  :lol:  :lol:
Post of the year!!  :clap:  :clap:

Very nice Frederic!! Love the waterjet cutter  :lol:

[mario]

bouarrrrrrrrrrrrrrrrrrrrff :wink:

[orionis]

J'EN VEUX UN!!!  :shock:

[erwan]

ha?? toi aussi??

[Frederic]

Hello boys and girls !

Today, we tried beer cutting, after water cutting at the flying club ... it does not work well, it foam too, but it makes the children laugh...

we start building our glider. In two days, our fuselages are almost complete


big kisses
Frédéric

[miki.r]

Hi again,
i maidened my Quark last weekend and it flies great! Well, I started with the CG a bit too far back - this was not really funny, but with a bit more lead in the nose the Quark flies just perfect. Inverted loops are great, and rolls are incredibly fast with 35mm on the ailerons.
The only problem I found was the speed limit. Yesterday flying in 14m/s wind with strong thermal activity was really fun, the plane also accelerates very well, but suddenly the rudder+elevator caught a really bad flutter. The lightening holes in the tail of the fuse make the structure too soft and the whole tail starts twisting. so no fast flying with those holes. I will reinforce the holes with some 3x0,5mm CF rods glued across.

The Quark makes a beautiful whistle on fast aileron rolls, while being absolutely quiet on straight flight, really great fun! I will post some pictures and maybe a vid too as soon as i get them...

[Richard Boyd]

Hi Miki sounds like you have had fun with your quark, I donot think the plane was designed for high speed flying but with a few strenghteners you will reduce the flutter.
I too am awaiting good weather to get my video shot.
Rain again for the next few days and no forcast of any descent winds. I donot remember weather like this, global warming has no effect on Ireland lol