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Pusher Park Jets For all pusher jets and jet-like models.

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Old 01-13-2015, 05:33 AM   #1
Bobdaeronort
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Default "5EZP" Su-25 Frogfoot

From Wikipedia, the free encyclopedia

Su-25

Role Close air support
Manufacturer Sukhoi Design Bureau
Tbilisi Aircraft Manufacturing (former)
First flight 22 February 1975 (T8)
Introduction 19 July 1981
Status In service
Primary users Russian Air Force
Belarusian Air Force
Ukrainian Air Force
North Korean Air Force
See Operators for others
Produced 1978–present
Number built Over 1,000
Unit cost
US$11 million[1]
Variants Sukhoi Su-28
The Sukhoi Su-25 (NATO reporting name: "Frogfoot") is a single-seat, twin-engine jet aircraft developed in the Soviet Union by the Sukhoi Design Bureau. It was designed to provide close air support for the Soviet Ground Forces. The first prototype made its maiden flight on 22 February 1975. After testing, the aircraft went into series production in 1978 at Tbilisi in the Soviet Republic of Georgia. Russian air and ground forces nicknamed it "Gratch" ("Rook").

Early variants included the Su-25UB two-seat trainer, the Su-25BM for target-towing, and the Su-25K for export customers. Some aircraft were being upgraded to Su-25SM standard in 2012. The Su-25T and the Su-25TM (also known as the Su-39) were further developments, not produced in significant numbers. The Su-25, and the Su-34, were the only armoured, fixed-wing aircraft in production in 2007.[1] Su-25s are in service with Russia, other CIS states, and export customers.

I'm leaning toward modeling the "UB" or two-seat trainer version.
She is 42" long with a 42" wingspan.
Began the pattern cut-out this evening. Pics soon.


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Old 01-13-2015, 11:47 AM   #2
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That should be a nice build, and it will help to keep you out of the Beer Bars, Pool Halls and from Chasing wild women

I may be getting Older, But I Refuse to grow Up I am Having to much Fun to Grow Up LOL
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Old 01-13-2015, 11:36 PM   #3
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Originally Posted by CHELLIE View Post
That should be a nice build, and it will help to keep you out of the Beer Bars, Pool Halls and from Chasing wild women
Well, it will keep me from two of them and two out of three ain't bad.

Meanwhile here is the pattern developing.
The rending of foam has begun also.


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Old 01-14-2015, 05:36 AM   #4
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This evenings rending of foam.


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Old 01-15-2015, 02:51 PM   #5
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Work on the Frogfoot mock-up continues.
The primary structural issues are resolved.
As with the Yak-130, I will glides test the mock-up and then build a new one to motorize and fly.


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Old 01-15-2015, 06:19 PM   #6
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Mock-up done.


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Old 01-15-2015, 07:07 PM   #7
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Glides
https://www.youtube.com/watch?v=SNOVbJpoTSI
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Old 01-17-2015, 03:16 AM   #8
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The second FROGFOOT is cut out and taped together for fit.
Here it rests in the model stand with the first FROGFOOT mock-up to the left.
The "5EZP" Frogfoot's nacelles are deep enough to allow it to take-off and land on it's belly without landing gear.
The "5EZP" Frogfoot should come in around 28 ounces like the "5EZP" YAK-130 which is the same size model.
This would also make a great EDF model.


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Old 01-18-2015, 11:07 PM   #9
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All glued together and ready for gizmos.
She is 41" long with a 42" wingspan less tail and nose booms.
She will be powered with a Grayson Hobby SMJv2 spinning a 7x5 Prop and have a aileron, elevator and rudder set-up. No fixed gear yet. Gonna maiden her without it.
I just ordered two GH 64mm EDF's to try twin EDF version later.
may do retracts on the EDF Version.


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Old 01-20-2015, 02:04 AM   #10
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DONE.
Still in her "Natural Commie Pink" colors and
Ready for her Maiden flight tomorrow in the January sunshine.
Took her down to my local Temptation Parlor (Hobby Barn) this evening and the guys there didn't like the Commie Pink either.
Specs: 41" long, 42" KFm4 wingspan, 26.5 oz. flying weight (1:6 Thrust to weight), Grayson Hobby SMJv2 w/ 7x5 prop, 50A ESC, 2200 3S Wild Scorpion LiPo, 4 TP MG92 Servos - ailerons, elevator and rudder.
I will paint it after her maiden, light aircraft gray ventral and flat olive drab dorsal with dark aircraft gray camp.

Sorry Chellie, I'm going ahead without you again.


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Old 01-20-2015, 11:37 PM   #11
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Maiden Flight
https://www.youtube.com/watch?v=sv66CmLpc3w
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Old 01-21-2015, 04:38 AM   #12
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Second Sunrise Sortie

https://www.youtube.com/watch?v=jCQ2-xiFBZ4
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Old 01-21-2015, 04:50 AM   #13
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Nice Job Bob Your plane flies great, But, I was suppose to do the Maiden Flight on it LOL , Take care, Chellie

I may be getting Older, But I Refuse to grow Up I am Having to much Fun to Grow Up LOL
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Old 01-21-2015, 01:31 PM   #14
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Originally Posted by CHELLIE View Post
Nice Job Bob Your plane flies great, But, I was suppose to do the Maiden Flight on it LOL , Take care, Chellie
Well, I wish you would'a been there cause you would'a noticed my transmitter batteries were almost gone.
I flew her again for the third time anyway and the transmitter blinked off
( According to Spektrum Tech Support the DX6 RF units blink off and on under low power) and she tipped stalled as she began a low pass and rolled in busting her fuse. Video coming soon.
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Old 01-21-2015, 01:47 PM   #15
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Originally Posted by Bobdaeronort View Post
Well, I wish you would'a been there cause you would'a noticed my transmitter batteries were almost gone.
I flew her again for the third time anyway and the transmitter blinked off
( According to Spektrum Tech Support the DX6 RF units blink off and on under low power) and she tipped stalled as she began a low pass and rolled in busting her fuse. Video coming soon.
Bummer, My RC Instructor told me to Charge my Transmitter over night before I go Out To Fly, So Far So Good, Never had a Transmitter Low Voltage Problem so Far

I may be getting Older, But I Refuse to grow Up I am Having to much Fun to Grow Up LOL
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Old 01-22-2015, 03:44 AM   #16
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Originally Posted by CHELLIE View Post
Bummer, My RC Instructor told me to Charge my Transmitter over night before I go Out To Fly, So Far So Good, Never had a Transmitter Low Voltage Problem so Far
I use four AA batteries in my new DX6, Not a rechargeable pack. I must pay attention to the battery indicator. Once again a good and complete pre-flight check would have saved the day. That "One more Flight" thing bit me again.
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Old 01-23-2015, 02:44 AM   #17
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Now painted in (UGLY) Russian Federation colors.


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Old 01-24-2015, 04:25 AM   #18
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Yet another Frogfoot flight

https://www.youtube.com/watch?v=jz-ucQX9zX0
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Old 01-24-2015, 10:07 PM   #19
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Hard points and a couple of missiles make her meaner looking.


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