Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Phoenix F-20

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Old 06-07-2006, 11:27 PM
  #1  
Crazy4Flight
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Default Phoenix F-20

The first flights on my Phoenix F-20 were not the best. A landing on a rough grass strip cracked F-2 for the nose gear. OK carve it open and do some serious bracing. The second flight ended prematurely due to flutter. The chineeze rods had been replaced by 4-40. The sharp angles needed caused a spring effect. Upon landing one of the main gear blocks in the wing split open at the hole for the wire. Back to the repair bench. surface mounted Hitec HS-225MG mini servos and straight 4-40 links. The servos will make 67 in/oz. torgue @ 6.0V. If the skies are dry tomorrow the F-20 will get another test flight. Power is a Jett .50 on a macs quiet pipe. turning an 8.8x8.875 APC.

And Hannah had a bithday!! She got a cake and ate it too!
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Old 06-07-2006, 11:54 PM
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Razor-RCU
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Default RE: Phoenix F-20

Wow- sorry to hear of the difficulties so far... The prop seems a bit small eh?

Keep us posted!
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Old 06-08-2006, 12:01 AM
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Crazy4Flight
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Default RE: Phoenix F-20

borrowed it from my purple Whip.

the home field has a paved runway

also set up ailerons for flaps

flapperons and a P-mix of flap to elevator to correct trim needed
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Old 06-08-2006, 05:35 AM
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crasharama
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Default RE: Phoenix F-20

Geez,
I thought the wing was about the bet built part of mine[]
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Old 06-08-2006, 09:55 PM
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Default RE: Phoenix F-20

Dude the birthday girl is a total dog! I expected more from you![X(]

Man that linkage in the back end is ridiculous! Get them servos indoors and make the plane look right. Nice choice of motor.
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Old 06-08-2006, 10:04 PM
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Default RE: Phoenix F-20

I put the F-20 up today in 10-15 mph winds flew well no flutter

Viceman,
I built to many CAPs and dont know how to put servos indoors...
Do doors need hinges and air cylinders to operate them ???
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Old 06-08-2006, 10:20 PM
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vicman
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Default RE: Phoenix F-20

Someday you will get the e out of my name and realize it is Vic man OK so Canadian Club is my vice.
Indoor servos do not require hinges or servos. Hatches are nice but not completely required if you are a confident builder. Nice job on Razor's Whip BTW.

To all who care the SA and Cermark?Kangke version do not have the hack looking external servo mounting system previously shown in this thread.
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Old 06-08-2006, 10:21 PM
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Default RE: Phoenix F-20

That'd be a nice photo if you airbrush that car out of it.
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Old 06-08-2006, 10:43 PM
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Default RE: Phoenix F-20

Vic- The Whip was plain white when Crazy sent it to me.... I took a LOT of time and a shaker can (15 minutes including a partial clear-coat) to complete her!
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Old 06-12-2006, 11:33 PM
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Default RE: Phoenix F-20


ORIGINAL: Razor-RCU

Wow- sorry to hear of the difficulties so far... The prop seems a bit small eh?

Keep us posted!

the 50 sounded like a D/F on a take-offf roll!

Had to do some serious mods to the main landing gear blocks also remote needle was loose. Saturday night and Sunday morning. Then went out flying sunday afternoon had even more problems... 2 fuel pump failures, needle valve was clogged with crud and the I found the head bolts were loose to snug!

Prop is now a APC 9x10 .50 likes it and off I go.

The F-20 flies like it is on rails! Can pull a hard (tight) turn without the tail stalling. Had to fly long downwind to bleed off speed or over shoot the runway. I had about 8 flights Sunday. Just howw fast ??? about 100-120 no radar at the field today.

Just for grins I sent my buddy up with my Magnum Jett .50 then I tookoff with the F-20. The Magnum with a 8.8 x8.75 pylon prop smoked the F-20
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Old 06-13-2006, 09:01 AM
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Default RE: Phoenix F-20

Sounds like ya have most of the gremlins worked out there....

Nice to hear it flys well
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