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Old Feb 12, 2016, 01:26 PM
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Originally Posted by Rollmops67 View Post
Thank you Bille.
That makes sense, so I think I will install the 2 servos to maneuver the real flaps.

Have nice flights and smooth landings !

Roland
YEP -- that is the way to go !!
Be cretin to let the Flap, act as flaperon ; but don't do flaperon to
the aileron. And also ; when i activate down flap, i also get Ruder
when i hit aileron. When i'm in Up-flap, (3-deg) i'm probably going
really Fast, and
i don't want Ruder mixed in when i hit aileron, because i get a Barell-roll
instead of an aileron-roll.

All three positions of flap , are in flaperon mode , (3-deg up, 0, and 25-deg down) ; but NOT the aileron.

Bille
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Old Feb 13, 2016, 02:52 AM
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Thank you again.
I planed to take a 3 position switch on the TX : 0░ ; about 3-4░ down (camber) ; about 30░ down for landing flaps
I allready installed flaperons on a plane (wich has aileron on the whole trailing edge length), and I programmed the TX so the flap(eron)s take 3 seconds to go down, so there is almost no balooning, and it was not even necessary to add a mixing to the elevator.
But each plane is different, so let's see how the Phoenix behaves.

Roland
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Old Feb 14, 2016, 04:06 PM
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Well, I have to pull my head in!
After stating the FPVRaptorV2 and Phoenix wing sets are EXACTLY the same it turns out I was wrong.
I Just weighed two new wing sets, one Phoenix and one RaptorV2, and the Raptors are 55gm's heavier!!!
These wings sets are brand new, no servo's, wing joiners, or any other hardware installed at the time of weigh in.
Apart from that they are identical though.
Must be the grey paint job the Raptors wings are done in.

Hangs head in shame and goes to stand in the corner for a time out...

Edit: 327gm vs 382gm if anyone is interested
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Old Feb 14, 2016, 05:08 PM
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Couldn't that be normal?

I heard when crocs are produced that when moisture changes the crocs tend to be out of size a bit.
Maybe this also applies to foaming wings. Maybe environmental changes cause the weight difference. It appears reasonable to me that your wings may have been produced on a humid day and contain more moisture.
Do you get me?
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Old Feb 14, 2016, 09:46 PM
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I like the Phoenix 2000 but boy she can be a handful if your not careful.
Enjoy the Video

Phoenix 2000 High speed pass with a change of underwear 15 02 16 (3 min 18 sec)
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Old Feb 15, 2016, 12:04 AM
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Quote:
Originally Posted by Kenniffs View Post
Well, I have to pull my head in!
After stating the FPVRaptorV2 and Phoenix wing sets are EXACTLY the same it turns out I was wrong.
I Just weighed two new wing sets, one Phoenix and one RaptorV2, and the Raptors are 55gm's heavier!!!
These wings sets are brand new, no servo's, wing joiners, or any other hardware installed at the time of weigh in.
Apart from that they are identical though.
Must be the grey paint job the Raptors wings are done in.

Hangs head in shame and goes to stand in the corner for a time out...

Edit: 327gm vs 382gm if anyone is interested
Might not be a totally bad thing. Especially on high wind days...

Nice to have another option for wings..

Paul
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Old Feb 15, 2016, 02:11 AM
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Quote:
Originally Posted by Popper45 View Post
I like the Phoenix 2000 but boy she can be a handful if your not careful.
Enjoy the Video

https://www.youtube.com/watch?v=8nBoL-jlLrU
Nice flying!
Especially liked that tight loop right over your head .
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Old Feb 15, 2016, 05:27 AM
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Quote:
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Turned out I needed a few more than that due to the horrible tendencies of the Raptor to tip stall. I went through a few wing sets on the Raptor till I started making my own.
Its funny.. i have a friend who bought a Raptor and he utterly hates it.. he has ditched the fuselage now .. every time he tried flying it it would tipstall or begin sliding .. like if it was seriously tail heavy.. but the CG was ok and i checked it against my P2K since its the same wings (so should be same CG).. and nothing..it just wont fly..

now he is trying to recycle the wings and tail into another new glider..

I tought it might be a tailplane angle issue? if the tail is bad aligned with the wing incidence it might cuase it to fly at a higher angle of attack and so more close to stall (a stall tecnically is related to angle of attack more than air speed itself.. only that the 2 of them are related.. air speed 0 = you falling with alpha 90 .. but some wings ..or using elements like spoilerons you can still be non-stalled at higher angles of attack and slower... or you might be losing altitude and going down but not in stall ..so the wing is still under control )

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Originally Posted by Grantham Kid View Post
Tip stall is caused by insufficient flying speed.
Tecnically insuficient air speed will cause a stall.. but a tipstall is when the tip of the wing stalls first than the root.. wich is a highly undesirable situation as it usually means spiralling down out of control..
In the normal Phoenix i have tried stalling.. it just drops the nose and losses a few meters altitude until the wings byte the air again and it recovers control.. it never tipstalled
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Old Feb 15, 2016, 12:18 PM
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Originally Posted by JLT_GTI View Post
...



Tecnically insuficient air speed will cause a stall.. but a tipstall is when the tip of the wing stalls first than the root.. wich is a highly undesirable situation as it usually means spiriling down out of control..
In the normal Phoenix i have tries stalling.. it just drops the nose and losses a few meters altitude until the wings byte the air again and it recovers control.. it never tipstalled
A quick fix for your buddy , would be to lock both flaps Down about
3-deg to 5-deg , to give the wing some Twist ; that will make the flap portion
of the wing stall First , (and the tips stall last).

I wonder WHY his wind does that ?
A P2K body, is only $25 !

Bille
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Old Feb 15, 2016, 01:31 PM
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Quote:
Originally Posted by BilleFly View Post
A P2K body, is only $25 !

Bille
That's how I found out the wings are different weights. I jumped onto HK and ordered (as separate items) a Phoenix fuse and a RaptorV2/Firstar wing set (the Phoenix wing set was zero stock at the time) to make my self a second Phoenix, this time trying to keep it as light as possible for on the slope or maybe bungee launching it.
Still had a spare set of new Phoenix wings in the garage roof so thought I would compare weights.

Regards moisture/humidity in the molds, I guess it's possible but I have read before about paint adding a surprising amount of weight to a plane, this is the first time I have had first hand experience of it though...
And when you think about it 55ml of water weighs 55gm and paint is a lot denser so I guess that would be about right.
I think it would be difficult to paint wings that size with any less paint?
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Old Feb 15, 2016, 02:04 PM
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Quote:
Originally Posted by BilleFly View Post
A quick fix for your buddy , would be to lock both flaps Down about
3-deg to 5-deg , to give the wing some Twist ; that will make the flap portion
of the wing stall First , (and the tips stall last).

I wonder WHY his wind does that ?
A P2K body, is only $25 !
yes but you dont want to fly with flaps down forever...and less in a FPV plane.
Also i think its safe to discard the wings.. if they are the same as in the P2K.. the fuselage shouldnt influence much..either.. save for giving the wing and tailplane incidences.. the Raptor fuselage will be more draggy and wont blow airflow over the wings.. but that doesnt make the wings inefective
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Old Feb 15, 2016, 02:33 PM
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hey whats the best spar to use for upgrade on this? its a square spar right? mine seems to be missing from my kit
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Old Feb 16, 2016, 10:24 AM
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Optimum kit list for P2K kit

Apologies for jumping in right here.

I'm in the market for a nice 2m wingspan glider. A lot of the guys at the club use the MPX EGP but I liked the look of the P2K. The EGP seems to be able to fit a larger can motor.

I'm up to page 121 so a while to go yet, this is such a large thread. What's the latest view on the best shopping list ?

Thanks in advance
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Old Feb 16, 2016, 11:45 AM
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Toothpicks + rudder = rigidity

I began to assemble my Phoenix 2000, it will remain stock, apart the no name servos I will replace with metal geared ones (5 Emax ES08MA II for the wings and rudder and 1 Emax 3104 for the elevator) and a 3A BEC (I will add this modell : https://www.hobbyking.com/hobbyking/...dProduct=31693 )
And I think I will connect the 5V output of the stock BEC (the one integrated in the ESC) to the 5 V output of the added BEC through a schottky diode, so I have 2 redundant 5V supplies.

But let's come to the subject of this topic :
Seeing were the horn is mounted on the rudder , I found it "wobbly" and I did not like this.
So I rigidified the bottom of the rudder with some toothpicks (drilled 2 mm holes beforehand to "guide" the picks), and it seems to be fine now.
Some images say more than 1000 words...

I expect to finish my Phoenix 2000 in 2 to 4 weeks, I will of course report how the maiden flight went...

Roland
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Old Feb 16, 2016, 03:12 PM
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I put a hinge in the bottom of the rudder.
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