Quark 2M - Back to cutting innocent trees!

[Richard Boyd]

very nice build Alistar, this is very different to the proto build and thanks for the fotos, very interesting for me to look at the new  cnc lazor machined Quark.

[alibodin]

Thank you for the encouragement.

Having sanding the 3mm carbon rod to fit the tube I did the all moving tailplane AMT.



Here they are with the epoxy drying. Glad is a symetrical section as both can be built the same way. On second one chamfered the leading edge of the ribs to fit the leading edge when added.

Also made the servo holes in ST1 and ST2 bigger for my servos. Added wood for screws to hold servos in and also a switch as well.

Need to add some holes for cable tie to secure the RX and another hole for the arial tube.

Alistair

[alibodin]

Glued up the fuselage, well formers 2,3,4 and 5.



As the nose is a little narrower I will add that former later and hopefully ensure both sides at the front bend equally for a nice symetrical fueslage. Same applies to the rear as well. I will pull it in to the last former hoping for a nice symetrical fuselage.

Because the Carbon tubes are not too accurate, the holes in the AMT horn are too large. So lets make another one. Got some of my 3mm ply and it is not as good as the ply in the kit. So only big enough piece of ply with the strength in the correct direction was the rib gauge. So made a new rib guage with my own ply, then cut the rib guage to make a new AMT horn. Hopefully means the holes will be a nice tight fit to minimise slop.



Now measure up and cut some carbon tube and rod for the wings, ohh what fun.

AListair

[alibodin]

Started the first wing which was straight forward. Glue it all up and realised I had forgot the rear tube. It just slid in just fine.



Need to add the expoxy to ribs and carbon fibre.

WHOOPS :oops:  :oops:  :oops:

Looked at rear of fuselage and all is not fine.



Things do not line up. It will line up with pressure, so I may line it up and then brush rear of fuz with water to hopefully remove the twist. Then glue it up. I always seem to have problems building straight fuselages.

Alistair

[Richard Boyd]

Hi Alistair, you are making great progress with your build.
I have a small twist in my Quark , not the the glider at fault but me the builder lol. Good news is that it still flies straight and true, I would need to make myself a jig for building.
I am enjoying your build

[Happy Days]

Look here Chaps,  there’s been lots of promises about pictures & videos of these birds in flight, but none have actually been posted. :cry:

This really is not good enough!!  I want to see some action, I want to see these planes flying.  So come along gentlemen, show us how they fly!

(Richard, can you get your model to do a blender?  Ask someone to film it for you and stick the vid up on the forum,……there’s a good fellow. )

Yours frustrated,
Keith

[Richard Boyd]

Hello my friend Keith, I am not make excuses or anything but we have been experiencing some extreme bad weather up north this last few weeks so a video is out of the question at the moment.
I have a few weeks to prepare for my trip to fly in Lithuania F3K EURO TOUR competition and I can not even get out to practise.
I am in big problem as I never have flown in this type of competition before so last place will be mine lol.
 If you donot believe about weather then look at yesterdays,

BBC NI Iplayer link,

http://www.bbc.co.uk/news/uk-northern-ireland-18618973

[Happy Days]

Hhmmmm, :?:  well maybe I’ll let you off Richard. But what about Miki and the others building these Quarks. Where are these videos lads? I’ve yet to see Fred’s video that he promised us. Fred, Oh FRED!! Can you hear me??

Good luck in your forthcoming contest Richard and remember, “He who dares, wins.”

K.

[Richard Boyd]

Keith take my word for it ,  this is a fantastic glider,
Here is first flight with mine, elevator is twitchie cause I had the elevator on zero expo, the switch got knocked on my way to the slope.

http://vimeo.com/40676722

[Happy Days]

Ar-ha, so you did have some video footage! You little rascal Richard.

Certainly seems agile enough, tried any back flips? I didn't see any footage of how fast she rolls? It would be relative to speed I know but I'd be interested to see just how fast and sharp she can roll :?:

K.

[Richard Boyd]

Hi Keith , the quark has as good as roll rate as you want to make it !
Just build it will super throws and use good quality fast servos and you will have what you ask for. :clap:

[alibodin]

Been cracking on. AMT is in elevator pushrod is done. Had a sticky moment when cycno stuck the AMT rod to the pivot. Fortunately managed to seperate them. All works fine. Question I assume that the longitudal declage is 0-0 for the wing and tailplane???

Note. The fuz can be twisted though it does require some force.

Added top and bottom sheeting and did the canopy. I will add nose later once I have a rough idea of how much lead I require to balance.



Joining the two halves of the aileron leading edge was tricky. Decided to use balsa dust to make a nice fit and wick in cyno. Seems to have worked fine. Add the ribs using the rib guage took a while.



Seeeting to be done then shaping.

Fin and ruder seem quite fragile built as per plan, considering sheeting with 1/32 balsa to add some strength. Thoughts???

Sheeted one half of the tailplane. Took a while but I think worth the effort. WOuld have been quicker to completely sheet it.



Think it looks OK and weighs in at 19.5 grams.

Alistair

[Richard Boyd]

Hi Alistair , my goodness your really are putting together your Quark very quickly and with great technique  :clap:
I tried to keep the rudder as light as possible, it saves adding unwanted weight to the nose.
I built my rudder different to the plan and it was 9.8g with covering and control horn, the way the rudder is mounted on the quark means it does not contact the ground when landing in rough terrain. So keep it light.

[alibodin]

It is an easy model to build, all the hard work of cutting accurate formers and ribs has been done. Everything just fits nicely. Nearly as simple as fit it together and drop in some cyno. For wing sheeting I use impact adhesive on the big bits, cyno on samller ones and PVA for leading edge. I do like hardword false leading edges, makes it very easy to sand the front of the wing nice and straight to get a good fit for the leading edge.

Decided to do wing as per plan rather than fully sheet, mainly because I can not join sheets together. Also even without any sheeting wing is very strong and does not twist.

Seems stock wood for sheeting is 3 inches as that is the size of the D sheeting. The sheeting at the rear is 3/4 inch, which is one sheet 3 inch cut in 4! Clever design Fred!

Here is the port wing.



Had fun with servo wire. Taped it up nicely at the root and then sanded root smooth and discovered I had sanded through the servo cable  :oops:  :oops:

Took it out and re did the cable. Fortuntaley the ribs have holes in so I could drop a thread with a small eight through the holes and then pull the servo lead through.

Another wing, ailerons and some sanding, then some covering to do, secure aileron servo to plate and then set up.

Alistair

[mario]

good job