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1/4 scale F9F Panther build

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1/4 scale F9F Panther build

Old 07-17-2013, 01:42 PM
  #526  
jofunk
 
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Default RE: 1/4 scale F9F Panther build

Mr Fun came over Monday night and did some more work on his hatch areas to stiffen things up. I installed a pair of Dubro 500TL tires on my Panther and with the wings plugged in and a few bricks to simulate fuel load they held up to the weight of the plane very well. They are solid tires with the outside rubber or vinyl and the inside the same material but aerated. the analogy the Dubro rep gave me was sorta like the dash of your car. The other plus is that they are a little lighter than the inflatable type. I ground some flat spots on the axles and put some lock tite on the set screws. With a battery charge It is ready to go. Right now the Temp. in Chicago for the past couple of days has been in the 90s. Not very fun being outside. It is now just a combination of when I am available and the weather cooperating to get a test flight on it.
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Old 07-18-2013, 06:58 AM
  #527  
sysiek
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Default RE: 1/4 scale F9F Panther build

Super you find the rite tires for you jet hope the work good for you.
Old 07-18-2013, 07:24 PM
  #528  
Terry Holston
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Default RE: 1/4 scale F9F Panther build

What are you doing for brakes? )
Old 07-18-2013, 08:25 PM
  #529  
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Default RE: 1/4 scale F9F Panther build

Grass field brakes optional will not roll on idle.
Old 07-18-2013, 08:45 PM
  #530  
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Default RE: 1/4 scale F9F Panther build

Right now I am working on making it go. If it turns out to be a viable flying model I'll look into a set of wheels and brakes.
Old 07-19-2013, 02:59 AM
  #531  
grbaker
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Default RE: 1/4 scale F9F Panther build

Grass field brakes optional will not roll on idle.

SAFETY REGULATIONS FOR MODEL AIRCRAFT
POWERED BY GAS TURBINES
6 - For RC fixed wing aircraft: With the exception of hand-launched aircraft which have no undercarriage
and with a flight weight under 7.5 pounds wet, the model shall be able to come to a controlled stop on
command
with the engine at idle on a level hard surface.
How can you meet this requirement without brakes?
I've flown turbines off grass for 10 years. No way I would fly one without brakes.
Old 07-19-2013, 01:46 PM
  #532  
ravill
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Default RE: 1/4 scale F9F Panther build

OMG, so much work!!!

Looks great!
Old 07-21-2013, 07:23 PM
  #533  
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Default RE: 1/4 scale F9F Panther build

To compensate for the nose weight mounting hardware, mount, and a few things that finished the plane, I drilled nearly a pound of lead out of the nose. I decided to recast the nose weight. It was then thinner so I shimmed it foreword. It is now the absolute least possible amount of nose weight in the best possible spot. The nose weight is now 4.7 pounds. The CG is neutral on the front wing plug in. The front wing plug in is a little forward of the CG.
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Old 07-25-2013, 05:45 PM
  #534  
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Default RE: 1/4 scale F9F Panther build

Joe, all I can say is "Great Success!" I think you got just what you were asking for , it was a perfect afternoon for a test flight, the wind was calm and almost everything worked perfectly. Here are some photos:
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Old 07-25-2013, 05:54 PM
  #535  
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Default RE: 1/4 scale F9F Panther build

Very glad to hear it was a success after all that work.
Old 07-25-2013, 05:56 PM
  #536  
Terry Holston
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Default RE: 1/4 scale F9F Panther build

Did ya get any flight pictures? ? ? ?
Old 07-25-2013, 05:58 PM
  #537  
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Default RE: 1/4 scale F9F Panther build

Hi Terry,
I am working on splicing some video. There will probably be videos from at least 4 cameras.

Old 07-25-2013, 06:06 PM
  #538  
Terry Holston
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Default RE: 1/4 scale F9F Panther build

KOOL! ! ! ! ! ! !
Old 07-25-2013, 07:26 PM
  #539  
N419BH
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Default RE: 1/4 scale F9F Panther build

I think you need a bigger van...
Old 07-25-2013, 07:27 PM
  #540  
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Default RE: 1/4 scale F9F Panther build

here is some raw footage that I spliced together, sorry, I do not have time to edit it.


[link=http://www.youtube.com/watch?v=cl_McAo0X6Q]JO FUNK PANTHER TEST FLIGHT 2013[/link]
Old 07-25-2013, 08:17 PM
  #541  
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Default RE: 1/4 scale F9F Panther build

Hi I just up loaded the video to YouTube the account is ,, tooommmek ,, should work now.
Old 07-25-2013, 09:01 PM
  #542  
jofunk
 
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Default RE: 1/4 scale F9F Panther build

Thanks John Roth for the help. It couldn't have flown any better. Just two things to remember on the next flight. Take the jam blocks out of the mains and don't have the idle trim set to high. All this time building the plane I had two foam blocks jammed in the mains to keep them from collapsing on the work bench. I remembered to take them out as the plane was airborne in its first turn. So that is why the mains stayed down. The first landing attempt was hot with the idle trim high and the nose strut couldn't handle the landing attempt. It didn't stay on the ground so I went around now with no nose wheel. The second attempt was also hot so I went around again. Finally on the third approach I pulled the trim back and with the gear switch up slid the plane in with no damage other than the nose gear strut being broken. The Ziroli B 25 gear have been in a few planes before this one and the nose strut was broken off before. that's where it failed today at the weld where it was repaired. The plane took off with 200 oz of fuel and landed with a half full tank. It could stand to burn off another 50 or 60 ozs before landing. Tim D took a good video with my flip camera. As soon as I get it off the camera and up loaded I will post it here.
Old 07-25-2013, 09:24 PM
  #543  
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Default RE: 1/4 scale F9F Panther build

here is the video.

sabation get your ready so you can fly together

http://www.youtube.com/watch?v=J_41d...Kxc9-1J2ekt1xg
Old 07-25-2013, 09:33 PM
  #544  
sysiek
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Default RE: 1/4 scale F9F Panther build

Thanks for doing the link for the video it's much easier this way .
Old 07-25-2013, 09:37 PM
  #545  
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Default RE: 1/4 scale F9F Panther build

The flight is the biggest motivation to finish the jet ,starting to cleanup mine garage and setup the work station for the Panther jet .
Old 07-26-2013, 12:07 AM
  #546  
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Default RE: 1/4 scale F9F Panther build

Great Succesful Flight can't wait for the next.
Old 07-26-2013, 03:45 AM
  #547  
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Default RE: 1/4 scale F9F Panther build

Here is the video Tim D took with my flip video you may need to high light it and click"go to address".............http://www.youtube.com/watch?v=Y6s_KUr0iEc
Old 07-26-2013, 05:50 AM
  #548  
Terry Holston
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Default RE: 1/4 scale F9F Panther build

Good job Joe! ! ! ! Looked like a homesick angel.

3 things.............Need a bigger Van..........Take out the blocks............More Flap on landing.................Looked like take off flaps to me................Oh, and fix the nose gear. LOL
Old 07-26-2013, 05:52 AM
  #549  
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Default RE: 1/4 scale F9F Panther build

Outstanding project and flying Except!!! Flying over a busy highway is just asking for trouble. If it should happen to crash on the highway there could be multiple fatalities. and I'm sure it would make national TV which would make flying jets difficult for the rest of us.
Old 07-26-2013, 06:04 AM
  #550  
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Default RE: 1/4 scale F9F Panther build

Congratulation on project and maiden flight...

Bravo...

Regards from Serbia

Mirce

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