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Bob Cat Copy Falcon 120 Jet

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Old 05-05-2008, 08:57 AM
  #1001
Grodus
 
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Default RE: Bob Cat Copy Falcon 120 Jet

Tumbler,
I think there is room for an additional 18-20oz behind the wing tube. Move the rear former forward to the hatch for the wing bolts and there is now a lot of room back there. I will attempt to build a fuel tank for that area on my next Falcon.

Cody
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Old 05-05-2008, 09:00 AM
  #1002
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Default RE: Bob Cat Copy Falcon 120 Jet

Thanks Cody!


Quote:
ORIGINAL: Grodus

Tumbler,
I think there is room for an additional 18-20oz behind the wing tube. Move the rear former forward to the hatch for the wing bolts and there is now a lot of room back there. I will attempt to build a fuel tank for that area on my next Falcon.

Cody
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Old 05-05-2008, 01:00 PM
  #1003
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: Grodus

Tumbler,
I think there is room for an additional 18-20oz behind the wing tube. Move the rear former forward to the hatch for the wing bolts and there is now a lot of room back there. I will attempt to build a fuel tank for that area on my next Falcon.

Cody
Cody,

I have a Dubro 50oz tank over the wing tubes and an additional tank 18oz that came in the kit along with my UAT and could stack two more 18oz tanks over the first to get over 100oz in there if needed.
I fly with 72oz which gives me 7 hard minutes and enough reserve for a couple of go arounds with a P-60.

Jeff
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Old 05-05-2008, 01:07 PM
  #1004
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Default RE: Bob Cat Copy Falcon 120 Jet

Awesome! Sound good Jeff. I went ahead and ordered one. Thanks for all the info guys! Looks like I can use just about everythign from my Kangaroo exccept the struts wheich are going to be short. They are 5" and looks like I need 6"......is that right?

Thanks!

Tumbler
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Old 05-05-2008, 05:17 PM
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Default RE: Bob Cat Copy Falcon 120 Jet

There is definitely room for more fuel. A 64 oz. juice bottle conveniently fits over the CG, which is just about right for a 14# class turbine. I could easily add an extra tank or two if I wanted. After several more flights I'll decide if it's worth the effort.

Tumbler,

5 inch struts will work just fine. My mains are about 4.5 inches. It's just a matter of where you mount the plastic wheel well liners in the wings. Then of course you need to make the nose strut the right length to give it the proper attitude.

Joe
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Old 05-05-2008, 05:29 PM
  #1006
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Default RE: Bob Cat Copy Falcon 120 Jet

hi guys,firstly i want apologize for possibly causing some confusioni am new2-2jets(orange and black falcon with wren 54) and my mate and very good flying buddy friend with unbeliveable building/fixing/design/fabricator/problem sorter/r&d/allround good guy is new2jets(white and red falcon with inset/covered servos for low drag,sleek round low drag horns and backs-ditto any bolts wshers or nuts,lightweight install for everything and just to top it all off-a supersport!!! but i"m not bitter,someoones gotta be the quickest-ha ha.
anyway at least i had another 3 flights today-28 in total and still getting to know her-she"s been abit troublesome till recently but thats all been sorted-so its down to the pilot now. starting to aim her landins in a specific spot-not quite there yet but seems the bouncing bomb has gone
ps,the eurofighter is my other plane-not yet flown by me which is why i am new2-2jets.
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Old 05-05-2008, 05:29 PM
  #1007
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Default RE: Bob Cat Copy Falcon 120 Jet

hi on this thread there is new2jets which is me with the red & white falcon and
new2-2jets with the black & orange falcon , new2-2jets has forwarded some
private messages which people have left for me. confusing i know
tumbler
i have not recovered the model ,just mark out where the 2" covers are going to go and cut the top sheet of balsa, in most cases you will come across ply wood under the balsa you use this to sit the cover on and where there is no ply stick some in to make a seat for the cover and for the screws to go into, if you want some close up photos i can do some .

cheers
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Old 05-05-2008, 05:40 PM
  #1008
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Default RE: Bob Cat Copy Falcon 120 Jet

we even write on forums at the same time
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Old 05-05-2008, 05:41 PM
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Default RE: Bob Cat Copy Falcon 120 Jet

New2jets and New2-2jets,

Gee I can't understand why anyone would get you two guys or your Wren powered Falcon 120's mixed up.
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Old 05-05-2008, 05:43 PM
  #1010
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Default RE: Bob Cat Copy Falcon 120 Jet

nor me joe
cheers
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Old 05-05-2008, 05:48 PM
  #1011
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Default RE: Bob Cat Copy Falcon 120 Jet

another foto
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Old 05-05-2008, 05:50 PM
  #1012
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Default RE: Bob Cat Copy Falcon 120 Jet

New2jets,

I got ya. If you have some additional pics you'd don't mind posting, I'd love to see them...thanks! What did you use for servos in the Stab?

Tumbler


Quote:
ORIGINAL: new2jets

tumbler
i have not recovered the model ,just mark out where the 2" covers are going to go and cut the top sheet of balsa, in most cases you will come across ply wood under the balsa you use this to sit the cover on and where there is no ply stick some in to make a seat for the cover and for the screws to go into, if you want some close up photos i can do some .

cheers
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Old 05-06-2008, 08:28 AM
  #1013
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Default RE: Bob Cat Copy Falcon 120 Jet

These are the retracts I have will they work? Robart 630.

http://www3.towerhobbies.com/cgi-bin...?&I=LXES75&P=7

Tumbler
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Old 05-06-2008, 10:33 AM
  #1014
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: TUMBLER

These are the retracts I have will they work? Robart 630.

http://www3.towerhobbies.com/cgi-bin...?&I=LXES75&P=7

Tumbler
hi new2jets here , your robart 630 are to big you would have to do alot of mod`s around the retract area we used airpower 250 (link below) which fit in perfectly and at $147 you can`t go wrong, i used two futaba s3102mg in the tailplain and s3305 in the rest of it.post some pic later have to take them first.
http://www.airpowernet.com/twe/produ...roducts_id=616

cheer`s
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Old 05-06-2008, 03:33 PM
  #1015
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: joeflyer


Looks good. It seems that with the Supersport that you could take off point the nose straight up and keep going. I haven't the nerve to try it yet.

I just made a new mount for mine with 6 degrees of downthrust. I'll see how that works out next flight.

Joe
hi joe how did you get on with 6 degrees downthrust?

cheer`s
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Old 05-06-2008, 04:50 PM
  #1016
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Default RE: Bob Cat Copy Falcon 120 Jet

I've put 3 flights on it with the new mount and the engine dialed up to 18#. I'd say 6 degrees is just about right for it.

Joe
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Old 05-07-2008, 08:51 AM
  #1017
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Default RE: Bob Cat Copy Falcon 120 Jet

Here are a couple of pics from the second day of flying my Falcon. I fixed the problem with the left main so I actually got to land on 3 wheels this time.
I did some snaps and spins this time. No Problems. I actually filled the channels of the the booms where they make contact with the wings and used hysol to secure the wing down tightly to the wings. Time will tell if the airplane will hold up but I'm sure the booms will NOT come off.
I still cant get over what a sweetheart of an airplane this is.
It seems the white and red scheme is only available in the UK? I sent an e-mail to Nitroplanes about that color scheme and they acted like it didnt exist. I sure like that color.

Cody
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Old 05-08-2008, 09:31 PM
  #1018
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Default RE: Bob Cat Copy Falcon 120 Jet

How does the Horizontal stab assembly attach to the two boom mounted Vertical stabs ? Screws, epoxy, what ? ? ? Do you have any pictures ? ? ?

> JIM
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Old 05-08-2008, 10:54 PM
  #1019
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Default RE: Bob Cat Copy Falcon 120 Jet

Cody,
To make your plane red, white, and blue instead of the Orange,
white, and blue, use trim tape (for painting) and mask off around
the orange. Take a scott pad and skuff the film, then paint red.
What a difference.

Johnny
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Old 05-09-2008, 07:13 AM
  #1020
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Default RE: Bob Cat Copy Falcon 120 Jet

Johnny,
You make it sound so easy. Iron-on covering, I can do. Painting.....well, I'd be embarrassed to even show a pic of an airplane I tried to paint. You may be right though. You were definately right about the flying characteristics of the falcon. Seems like you were one of the first to fly one as a turbine and you were spot on about what a great flyer they are.
Thanks for the tip. I will order anonther as I have plans for some improvments. I might attempt a new paint job.

Cody
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Old 05-09-2008, 07:58 AM
  #1021
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: GeeBeeJim

How does the Horizontal stab assembly attach to the two boom mounted Vertical stabs ? Screws, epoxy, what ? ? ? Do you have any pictures ? ? ?

> JIM
Jim, the horizontal stab attaches with two screws, one through each tail boom into the horizontal stab. It has worked fine for me, as with a turbine on board, no vibration to rattle loose. I keep my falcon together all the time and fit it into my SUV ready to go so when I reach the flying field, I fuel and fly.

Jeff
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Old 05-09-2008, 08:59 AM
  #1022
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Default RE: Bob Cat Copy Falcon 120 Jet

Changing the blue trim to yellow would be another nice variation. I may do soemthing like this...

UPS says she is out for delivery...should be here today!

Tumbler

Quote:
ORIGINAL: Johnny Isaiah Woods

Cody,
To make your plane red, white, and blue instead of the Orange,
white, and blue, use trim tape (for painting) and mask off around
the orange. Take a scott pad and skuff the film, then paint red.
What a difference.

Johnny
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Old 05-09-2008, 04:21 PM
  #1023
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Default RE: Bob Cat Copy Falcon 120 Jet

Hi Guys,

Put Maiden flight on a friends Falcon Orange/Black on Sunday. What a beauty. A few clicks of up & a few right and she flew straight as a die.

Very smooth & easy to see. Once the wheels were up so the speed rose quickly.
Simjet 1200 18lbs thrust turbine as power plant.

Landing was a no drama event stayed smooth & stable right down to wheels contact.

Could not do a second flight due to failure of electric starter motor in the turbine bullet.[:@]

Back out tonight/evening. New 280BB supplied by Wren ( Excellent service from them ordered late Tuesday & arrived following day )
Well done to Sarah & team.

Put three flights on the Falcon, each one pushing the envelope a bit more each time.
Used full throttle for the first time going upwards, it gets very small very quickly with 18lbs of thrust.
Big loops were easy,round & smooth, inverted flight needed a push on the elevator for level flight ( that's how I like it ) rolls were as fast or slow as you like. Reversals & any other Jet like manovre were done with ease.

In summary what a great aeroplane.

My friend & owner was buddied up so we had at least half a flight each. It looks so gracefull in flight, smooth & precise.
It's a keeper.

All the best,

John C
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Old 05-09-2008, 06:14 PM
  #1024
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Default RE: Bob Cat Copy Falcon 120 Jet

The Falcon has landed! I worked on her for 10 minutes so far and that's all it took to modify the wing for the Robart 630. My strut is definetly too short but my buddy can make me an extension. What length is everyone fiding looks and woks best from the wing to the bottom of the wheel on the ground?

Thanks!

Tumbler
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Old 05-09-2008, 11:53 PM
  #1025
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Default RE: Bob Cat Copy Falcon 120 Jet

Tumbler,
Your struts are fine, shorten the wheel wells to match the strut length.
Remember, you do not have a prop that needs ground clearance.
Do not cut out any more film than you need for the wheel wells.

Johnny
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