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Author Topic: Flyfly, 3 meter FOX.  (Read 9131 times)

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Offline SpeedsterDEN

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Flyfly, 3 meter FOX.
« on: February 26, 2012, 18:24:48 PM »
First flights with my Flyfly Fox.
And I like it..
 :)
Small | Large
Dynamic soaring will change your life..

Offline Hairyflier

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Re: Flyfly, 3 meter FOX.
« Reply #1 on: February 26, 2012, 19:19:28 PM »
Very nice - who's selling these?
I do not agree with what you have to say, but I'll defend to the death your right to say it. Voltaire

Offline SteveBB

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Re: Flyfly, 3 meter FOX.
« Reply #2 on: February 26, 2012, 19:31:55 PM »
One of our club members has one of these.. It flies very well, the only weakness is the mounting for the wheel. A sort of bracket that uses a single threaded shaft to fix to the internal fueslage mounting. They've done it that way to incorporate a spring to cushion the landing, the problem is the backward pressure (due to the glider landing) on the mount is significant, so scrubbing the speed off, and gentle landing might be mandatory.
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Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #3 on: February 26, 2012, 19:42:27 PM »
I got it here:
http://www.sloughrc.com/default.asp?WMFN=SRCM_Weblet&WMFT=D&WPG=SRCM_HomePage1&OrderBy=0&PageNumber=1&ItemsPerPage=10&s=c:0,c:010,c:010-030,b:FlyFly

My version is the motor version, the glider was sold out.
There is just a small hole in the nose, and its very easy to make a new epp nose.
 :)
The wheel:
I have removed the spring, and compressed the gear and glued it in that possion.
Feels ok.
Regards
S
Dynamic soaring will change your life..

Offline Devon Flyer

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Re: Flyfly, 3 meter FOX.
« Reply #4 on: February 26, 2012, 19:46:04 PM »
Very nice - who's selling these?


http://www.myhobbystore.co.uk/product/30839/flyfly-fox-artf-glider-a-ffb016

But Slough Models are cheaper, by a long shot..................when they have them in stock. $%&

Offline Kiwikid

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Re: Flyfly, 3 meter FOX.
« Reply #5 on: February 27, 2012, 02:05:20 AM »
You can buy direct from FlyFly here: http://www.hobby88.com/shop/product_info.php?cPath=49&products_id=370

You would just have to do a postage/exchange rate calc to see what's best.

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #6 on: February 27, 2012, 11:05:13 AM »
Just maidened mine yesterday too, stuck a brushless motor in instead of 20oz of lead, flies great.
Regards
Simon.

Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #7 on: February 27, 2012, 18:38:39 PM »
Flyfly Fox fly by

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Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #8 on: February 27, 2012, 20:46:53 PM »
Nice video Den  :af
Regards
Simon.

Offline marillion

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Re: Flyfly, 3 meter FOX.
« Reply #9 on: February 27, 2012, 22:01:11 PM »
Fantastic video as always  :af. I would like to see it on coastal  spot.

Greetings, Kai

Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #10 on: March 24, 2012, 18:02:34 PM »
Towing the Fox and Reiher with my multiplex Funcup  ;)
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Motor set up is:
Turnigy Aerodrive SK3 - 3542-1185kv. 100 Amp ESC, 4000 Mha 4 cell Battery
Dynamic soaring will change your life..

Offline Roger

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Re: Flyfly, 3 meter FOX.
« Reply #11 on: March 24, 2012, 18:49:15 PM »
Ive steared clear of the Fly Fly stuff hearing all sorts of horror stories, really like the Fox and the Condor, you seam very happy with yours Speedster, anyone else flying them?
I dont have a short temper I just have a quick reaction to b%%%s%%%

Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #12 on: March 24, 2012, 19:28:13 PM »
Ive steared clear of the Fly Fly stuff hearing all sorts of horror stories, really like the Fox and the Condor, you seam very happy with yours Speedster, anyone else flying them?

Hi
Fuselage is realy nice build , but the wings could easely have been made better.
And they bend a lot in high speed and G, specialy negativ G..
But it will do for now, perhaps I make a new and better wing some day  :)
cheers
S
Dynamic soaring will change your life..

Offline Roger

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Re: Flyfly, 3 meter FOX.
« Reply #13 on: March 24, 2012, 20:16:12 PM »
Hi
Fuselage is realy nice build , but the wings could easely have been made better.
And they bend a lot in high speed and G, specialy negativ G..
But it will do for now, perhaps I make a new and better wing some day  :)
cheers
S
Thanks, im not really looking for a good aerobatic ship just something for light days on the slope with a bit of scale presence. Think I will have a good look at the Condor if the quality is ok.
I dont have a short temper I just have a quick reaction to b%%%s%%%

Offline Eyeboy

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Re: Flyfly, 3 meter FOX.
« Reply #14 on: March 24, 2012, 21:27:48 PM »
Go on Rog - you know you want it bad.
 :ev

Ah go on.

Go on.

Go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on!

Go on.
Yeah you?

Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #15 on: May 05, 2012, 16:08:25 PM »
My Fly fly FOX, first time at the slope.
+20 knots wind, perfekt conditions for this bird.
I realy like this cheap glider, realy a pleasure to fly, no tip stall or other nasty things, and all time in control.
And looks real cool in the air.
Today 3 flights and 2,5 hours
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Offline Europhia Pete

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Re: Flyfly, 3 meter FOX.
« Reply #16 on: May 05, 2012, 20:17:56 PM »
Hi Roger
I'm sorry to say that the reservations regarding the build quality of the FlyFly Condor Evo 4 might just be my fault.- oops  :''
I reviewed one for RCModel Flyer and, during the flight testing knocked off a wingtip - an easy enough repair, but it showed me that the wing was balsa sheeted with what looked like 25 gsm glasscloth applied to the INTERNAL surfaces of the wing sheeting.
I didn't like this and said so, but this was only my personal view and said that I had no reservations on the wing strength, just its balsa surface finish which I considered easy to damage.
If you're not bothered by this, I just happen to have the Condor, packed back in its BIG box in the loft(!) and if you're interested its available for a VERY reasonable price - I've taken out the servos, but its built and otherwise ready to fly :af
Please PM me if it might be of interest
Pete

Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #17 on: January 04, 2013, 18:45:13 PM »
Just bought one of these, as a pressie for my son. Any hints and tips on the installation/assembly?

Jef

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #18 on: January 04, 2013, 20:46:09 PM »
Mine was a pretty straight forward build, Hitec 85mg on flaps and ailerons. I used the same on the elevator but it was perhaps a touch too thick as it is fitted in the horizontal stab so I reckon an 82mg would be a better option there. I had a Towerpro 996mg fitted for the rudder on a closed loop system. Don't be too worried about the amount of lead needed to balance it, mine took 595grams/21oz but only weight just over 3kg/6.6lbs AUW.
This is a great plane for the money and mine has flown in 55 mph winds with-out a problem, it is also a half decent floater too. 
Regards
Simon.

Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #19 on: January 04, 2013, 21:16:16 PM »
Thanks for the reply Simon.

I have flown a few full house gliders, and normally the flaps drop more than 60 degrees. The flaps on this model only get about 25 degrees. Is yours the same?

As the covering seems to be restricting the movement, I am considering cutting the surfaces free and re-hinging them with a bit of slack. Any thoughts?

There is considerably more flap area than aileron area, and there is no restriction to the ailerons "up" movements, so perhaps 25 degrees of down on the flaps will give compensation- free braking (ie no elevator compensation required on application of brakes).

Very impressed with the rudder. It appears to be solid (when held up to a strong light source). How have they made that so light?

Cheers,

Jef

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #20 on: January 04, 2013, 23:03:48 PM »
Hi Ofej, I did consider re-hinging the flaps as mine like yours only has about 25-30 degrees but I did not get around to doing it and to be honest with you it does not need it, but it wouldn't do it any harm to have some more down travel on them.  I think I have a small amount of down elevator compensation mixed in with butterfly.  I mixed flap with ailerons to give it a better roll response and it certainly improves it over aileron only. The rudder is very light and very effective. All in all, I think the plane represents very good value for money and flies very well indeed.
Regards
Simon.

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Offline slopeflyer

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Flyfly, 3 meter FOX.
« Reply #21 on: January 04, 2013, 23:11:36 PM »
Here's another fly fly fox maiden. This had hs85s all round. Flew rather well.

http://m.youtube.com/watch?v=MctgsnXPeEw
For Scale, 3D and Aerobatics......... http://www.slopeflyer.org  .......................

Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #22 on: January 05, 2013, 15:04:44 PM »
My Fly fly Fox set up:

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Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #23 on: January 05, 2013, 15:43:39 PM »
Thanks Den.

The control surface throws, elevator compensation and CG location are very informative, so thanks for making that video.

Also I like the aerotow release idea. It doesn't interfere with the nose weight, and looks better than a hole in the characteristically pointed nose.

The shape of the Fox is really a thing of beauty to me now, whereas I found it annoying to the eye originally, because it didn't conform to the classical glider shape.

Can't wait to get started!

Jef

Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #24 on: January 05, 2013, 17:50:24 PM »
Hi Jef
And do something about the gear, or else it will bend/break, mine did.
Or it will be pushed back untill the wheel get sliced by the fuselage.
Now I have removed the spring inside the gear and made a plywood gear suport, glued at the backside of the gear and the fuselage.
Much better. :)

S
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Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #25 on: January 06, 2013, 18:21:36 PM »
Did you screw the tailplane to the fus with self tappers and CA them - as possibly implied by the rather vague instructions - or did you do it differently?

Just seems a bit 'iffy'.

Jef

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #26 on: January 06, 2013, 18:42:03 PM »
Hi Ofej, I used the screws and epoxy on mine. I stripped away the covering film on the tail where it touches the fuselage so the epoxy could get a good hold. It has stood up to all of the abuse I have thrown at it with complaint. :af
Regards
Simon.

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Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #27 on: January 08, 2013, 18:48:09 PM »
Hi SpeedsterDEN

Just setting up the elevator linkage... in your excellent video, you say 14mm up and down. Where did you measure this?
a) Middle of trailing edge.
b) Outside edge of trailing edge.
c) Front of elevator - on the balance part.

Also, (@anyone) how did you hinge the rudder - did you use the discs of glass weave? If so how did you cut the slots in fin and rudder?

Thanks In Advance,

Jef

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #28 on: January 08, 2013, 21:04:30 PM »
Hi Jeff, I used the supplied disc hinges and just cut the slots with a modeling knife, once hinged I pinned them with cocktail sticks.
Measure the elevator movement from the middle of the trailing edge.
Regards
Simon.

Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #29 on: January 08, 2013, 21:30:38 PM »
Hi Simon,

Thanks for continuing to help me.  :af

... just cut the slots with a modeling knife, once hinged I pinned them with cocktail sticks.
...

Thanks for the excellent advice regarding pinning the hinges.

How did you ensure the slots were in the right place (vertical and lateral)?

Sorry if this seems a bit basic, but as the fin and rudder are tapered (thinner at the top) a parallel guide is not the best way of finding the centre.

Also any hints / tips on slotting the front of the rudder?

Really appreciate this help.

Jef

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #30 on: January 09, 2013, 16:07:06 PM »
Hi Jeff, for the vertical slots on the tail I start off by inserting the wing spar and placing an equal sized foam block under each side of the spar. This ensures the fuselage is sitting nice and vertical. I then use a small frame with a plumb-line[string and a brass weight] which I place over the tail with the line hanging straight down the center of trailing edge of the fin and mark the center line and the places where I want the hinge slots. If the rudder post is at an acute angle like on the Fox, accurately measure the width of the post to find it's center and mark it, do this at the top and bottom and draw a line down to mark it's center. To ensure the slots are in-line I hold a small ruler on the center line and use it as a knife guide  when I cut the them. For the rudder it's self I just use a ruler to find the center line, mark it then hold the rudder in place on the fin to mark out the places for the hinge slots then same again, holding a small ruler down the center line as a guide, cut the slots in the rudder.
 Like all hinges, it pays to take your time and get them as straight as possible as out of line hinges will work against each other and cause an overload on the servo driving the control surface.
Regards
Simon.

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Offline SpeedsterDEN

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Re: Flyfly, 3 meter FOX.
« Reply #31 on: January 21, 2013, 19:08:29 PM »
Pictures

Cheers
s
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Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #32 on: January 25, 2013, 00:23:25 AM »
The rather nice looking wingtip mouldings, which are around 100mm x 75mm to the extents, weigh around 20g each. This seems excessively heavy to me, and the weight is in the wrong place,

Similarly shaped tips may weigh about a fifth of that if made from a horizontal lay up (from the bottom, up), as follows -
2mm Depron, 0.4mm ply, 6mm Depron,
all sanded to shape then covered with lightweight tissue, sealed with acrylic varnish.
The tips will be held onto the wings with sticky tape.

Has anyone else had similar thoughts?

Cheers,

Jef

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #33 on: January 25, 2013, 09:07:38 AM »
To be honest with you Jeff, the weight of the tips just does not seen to affect the roll rate of this plane at all. I used coupled aileron/flaps and differential and with a bit of speed this plane rolls as quick as you like. I did balance the wings laterally as one was a touch heavier than the other. Leave the tip wheels off though as they don't half make a racket when your doing a fast fly-by, plus mine had a tendency to snag when flying off the slope and landing in longish grass/undergrowth.
Regards
Simon.

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Offline ofej

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Re: Flyfly, 3 meter FOX.
« Reply #34 on: February 13, 2013, 20:00:56 PM »
Thanks for the advice regarding the tip wheels, I won't fit those.

The fuselage on my Fox had a twist - about three degrees between the wing joiner tube (across the fus) and the tail surfaces. Probably not enough to make too much difference to performance, but enough to 'stick out like a sore thumb' in pictures of the model in flight.

With some hot water from the kettle, I was able to take the twist out, wiithout any tears. I did it in two hits, being careful not to overstress the epoxy glass skin.

Jef

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #35 on: February 13, 2013, 21:14:28 PM »
Shame about the twisted fuselage, pleased you got it sorted OK.
Regards
Simon.

Offline SmarTmartY

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Re: Flyfly, 3 meter FOX.
« Reply #36 on: April 06, 2013, 16:22:19 PM »
I'm in the market for a replacement for my ageing ST Model Fox, and I fancy something bigger and NOT made of foam for a change. To keep within my budget for next month's birthday prezzie, I've narrowed it down to either this or the JP one, but Den's description and vids have really sold this one to me, plus it's cheaper than the JP. My building skills aren't that great to date, but I can use epoxy and a cocktail stick  :embarassed: so how difficult is it likely to put together? (You make it look seemples). I'm likely to keep this prop free and purely for the slope, unless I can get a tow on the flat, so how much lead would be needed for the nose? (I have plenty).

Good work so far guys  :af

Offline Simonslim

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Re: Flyfly, 3 meter FOX.
« Reply #37 on: April 06, 2013, 19:06:44 PM »
Go for it, you can't beat it for value and it is a superb flyer. :af
Regards
Simon.

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Re: Flyfly, 3 meter FOX.
« Reply #38 on: June 17, 2013, 22:41:50 PM »
Flew the Fox for the first time yesterday. AUW was very light (2.63kg), so risked flying in a very low windspeed at Thurnham in Kent.

First flight was OK, but the elevator trim was far too positive. Thinking of packing the front of the tailplane up by 4mm.

The landing was a bit heavy (even with a low AUW) and (despite what I thought was ample reinforcement) broke the wheel support ...

Second launch was into lift (which quickly disappeared) and the landing - soon after - was at the bottom of the slope. The landing was out of sight and broke the port wing. Now the broken wing is almost repaired (which I am happy to do) but have no idea how to rebuild the undercarriage support so that it can take a knock.

Any ideas / photos etc very gratefully received!

Many thanks,

Jef


Offline Rob Thomson

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Re: Flyfly, 3 meter FOX.
« Reply #39 on: June 17, 2013, 22:44:25 PM »
Maybe spring load the wheel -  nor decorative than functional?

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