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Bob Cat Copy Falcon 120 Jet

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Old 04-22-2013, 10:53 PM
  #4551
BaldEagel
 
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Default RE: Bob Cat Copy Falcon 120 Jet

Its a review more than a build report just to show the differences between the Marks, but I will be going into some detail on the items I think need clarification, should be ready by the end of next week.

Mike
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Old 04-23-2013, 12:57 AM
  #4552
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Default RE: Bob Cat Copy Falcon 120 Jet

Hi Col,

Sorry I have been away, Mine is not the newer one, no carbon but I plan to add some in around the gear bay. I building this jet specifically to fly off a rough strip and not my usual strip so everything is being beefed up
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Old 04-25-2013, 01:41 PM
  #4553
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Default RE: Bob Cat Copy Falcon 120 Jet

Here is a pic of my falcon with over 100 hrs of flight time. I would have to say it is holding up pretty good. It was built when this thread first started. George
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Old 04-25-2013, 02:38 PM
  #4554
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Default RE: Bob Cat Copy Falcon 120 Jet

Hi George,
I thought I had some air time with my Falcon's, I am only about 1/2 your time, I take my hat off to you.

For Jeremy, if flying off rough grass (well any surface), the secret is the trailing link undercarriage legs, they save the model. It is worth spending the money on good legs, you will always use them, even on another model. It is hard to justify when they probably cost more than the plane did, but they will pay for themselves over and over again. Just get good legs and do it once. if you look at one of my videos with the camera mounted under the left boom, you will see how much punishment the legs take away from the wings and the fuselarge.

http://www.youtube.com/watch?v=rS6wwYYAqdY

cheers tim
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Old 04-25-2013, 04:32 PM
  #4555
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Default RE: Bob Cat Copy Falcon 120 Jet

Hi Tim,

Definitely would not use anything but trailing link

Ken from KMRC has made a custom set to suit my electron retracts. I should get them on Monday and hope to have all the retracts fitted and it on it's legs by next weekend
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Old 05-02-2013, 01:09 AM
  #4556
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Default RE: Bob Cat Copy Falcon 120 Jet

Is there still any call for IC with pusher prop fitted as FMF do a non carbon reinforced version which would be ideal for using with an IC set up.
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Old 05-02-2013, 01:33 AM
  #4557
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: ModellbauUK

Is there still any call for IC with pusher prop fitted as FMF do a non carbon reinforced version which would be ideal for using with an IC set up.
The only interest I have notedin the airframeat my club is for conversion to turbine power and one for EDF. This is only my experience at my club here in Queensland so I wouldn't even guess at the situation elsewhere.
Try to steer the manufacturer into developing some more reasonably priced aircraft suitable for the 8-10kilo thrust range. (or copy someone else's)

cheers

Col


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Old 06-24-2013, 12:47 AM
  #4558
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Default RE: Bob Cat Copy Falcon 120 Jet

Hello,

yesterday my son made his firsts 5 flight with Falcon 120 powered by jetcat P20.
It's incredible how this little engine push a "big" model!!!
In this configuration the model is really easy to fly and it made all standar acro figures very easily.

regards




Damiano
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Old 06-24-2013, 10:55 AM
  #4559
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: daorizio
Hello,
yesterday my son made his firsts 5 flight with Falcon 120 powered by jetcat P20.
It's incredible how this little engine push a "big" model!!!
In this configuration the model is really easy to fly and it made all standar acro figures very easily.
regards
Damiano
A Falcon 120 on a P-20!!!

That's amazing. I considered a Wren 44 gold, but fitted a Wren 54 to mine instead - and it goes really well.

How heavy is it with a P-20??
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Old 06-24-2013, 10:59 AM
  #4560
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: alasdair


Quote:
ORIGINAL: daorizio
Hello,
yesterday my son made his firsts 5 flight with Falcon 120 powered by jetcat P20.
It's incredible how this little engine push a ''big'' model!!!
In this configuration the model is really easy to fly and it made all standar acro figures very easily.
regards
Damiano
A Falcon 120 on a P-20!!!

That's amazing. I considered a Wren 44 gold, but fitted a Wren 54 to mine instead - and it goes really well.

How heavy is it with a P-20??

I wonder how much runway it takes to lift off?
...or if it even WOULD liftoff of a grass field?

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Old 06-24-2013, 11:46 AM
  #4561
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Default RE: Bob Cat Copy Falcon 120 Jet

Alasdair, the weight with fuel is more or less 5 kg with half liter of fuel(enought for exactly 5 minutes of flight).
W4sm: less then 30 m to take off on asphalt but, sure, it can take off from grass field. The acceleration on the ground is impressive. Max speed is adeguate.

To reduce weight I install The minimum necessary to fly: no retract, 2 x 1000 mA for radio system, 1x2500 mA for turbine, no retract, no second alu bar, only one elev servo, etc.


Next time I'll Made a video.


Regards


Damiano
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Old 06-24-2013, 01:27 PM
  #4562
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Default RE: Bob Cat Copy Falcon 120 Jet

HI Guys,

I finally got mine finished and have had 7 flights on it to date. It came in at 6.9kgs dry and the VT80 gives it great thrust to weight.

I'm running Electron ER-40 retracts with KMRJ Jets struts and trim wheel and bakes. My goal was to keep the install as simple and as clean as possible which I think I achieved

I'm just trying to decide how to dress it up a bit more with some markings.

Here is a short Vid of it last weekend.

http://youtu.be/1g901vkrXKM

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Old 06-25-2013, 09:46 AM
  #4563
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Default RE: Bob Cat Copy Falcon 120 Jet


Nice clean installation! Congratulations! You also have an amazingly smooth grass field!
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Old 06-26-2013, 12:35 AM
  #4564
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Default RE: Bob Cat Copy Falcon 120 Jet


Quote:
ORIGINAL: Jeremy_D

HI Guys,

I finally got mine finished and have had 7 flights on it to date. It came in at 6.9kgs dry and the VT80 gives it great thrust to weight.

I'm running Electron ER-40 retracts with KMRJ Jets struts and trim wheel and bakes. My goal was to keep the install as simple and as clean as possible which I think I achieved

I'm just trying to decide how to dress it up a bit more with some markings.

Here is a short Vid of it last weekend.

http://youtu.be/1g901vkrXKM

Nice mate! Congrats!

Are you bringing it to marybourogh jet this weekend?

Thanks

Dave
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Old 06-26-2013, 01:38 AM
  #4565
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Default RE: Bob Cat Copy Falcon 120 Jet

I can't, it's my wife's birthday and we have quite a weekend ahead of us
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Old 08-14-2013, 12:50 AM
  #4566
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Hi All,

Here are some shots of my Falcon 120 all dressed up.

After 13 flights I have to say I'm very happy with this jet, the VT 80 is an excellent combination and it is a really nice flyer in general. I increased my flaps as well so now I have to maintain power all the way to the ground, it feels a lot more stable than chopping the throttle to idle and floating in.

http://www.youtube.com/watch?v=HwfqW...4A6xN9sk1yXx1Q
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Old 08-14-2013, 02:43 AM
  #4567
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Jeremy_D
Where did you get the 90 degree connector for the leads going to your VT 80?

Thanks
Duthie
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Old 08-14-2013, 02:58 AM
  #4568
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I made it with 2 MPX plugs and then used a microballoon and epoxy mix to fill the gap and painted it green
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Old 08-14-2013, 07:51 PM
  #4569
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Jeremy , can you comment on your fuel consumption with the VT-80? I am interested in that turbine.

Thanks,
Cody
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Old 08-15-2013, 02:56 AM
  #4570
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Hi Cody,

It is excellent! I have my timer set for 7 minutes and land with at least 1/4 tank of fuel left in the tank. My tank is about 2.4L and I fly at 1/2 to 3/4 most of the time. It is definitely very efficient.
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Old 08-15-2013, 09:18 AM
  #4571
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Quote:
Originally Posted by daorizio View Post
Alasdair, the weight with fuel is more or less 5 kg with half liter of fuel(enought for exactly 5 minutes of flight).
W4sm: less then 30 m to take off on asphalt but, sure, it can take off from grass field. The acceleration on the ground is impressive. Max speed is adeguate.

To reduce weight I install The minimum necessary to fly: no retract, 2 x 1000 mA for radio system, 1x2500 mA for turbine, no retract, no second alu bar, only one elev servo, etc.


Next time I'll Made a video.


Regards


Damiano
The model has such good low speed lift... it probably does better out of grass than a P20 powered Habu. Heck... Mine's almost 10kg with fuel... but with flaps... I can fly around at 20 mph, with no tenancy of a stall. (they really are great models)
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Old 08-15-2013, 07:09 PM
  #4572
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Great Jeremy thanks, thats similar to what I get with the same tank size with my superbee, but 5 less lbs of thrust.

Cody
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Old 10-01-2013, 10:32 PM
  #4573
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Quote:
Originally Posted by Jeremy_D View Post

I'm running Electron ER-40 retracts with KMRJ Jets struts and trim wheel and bakes.
Hello Jeremy,

I have been hammering the poor old Falcon Ver 1 pretty hard since Jan this year. The new K80 now has 7 hrs 51 minutes on it. All in the Falcon. I usually run 7 minute flights and land with fuel for another 4 minutes or so. I am about to start my second Ver 1 Falcon and am looking at KMRC struts. Do you have any pics you can show me please? The struts on the current Falcon are trailing arm nose gear struts from HobbyKing.



Much to the horror of the purists I run mostly HobbyKing gear in my current Falcon. The servos were hooked up to a servo tester and cycled at 1 cycle per second for 4 hrs before fitting to the model. The electric retracts were cycled for 30 mins. So far all good. Servos are Corona digital metal gear servos and all have passed the cycle test. The only problem I have had with the Falcon is when it lost a fight with a fence post while taxii'ing.



A pair of Version 2 wings from Ken were fitted and the Falcon continues to fly.

uTube video at http://www.youtube.com/watch?v=jrBdMA2Iq5Y

Cheers

Col

Last edited by SeaHawk; 11-05-2013 at 02:22 AM.
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Old 10-02-2013, 12:09 AM
  #4574
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Hi Col,

I opened up the wheel wells and then put some G10 board (1mm) around the opening and then covered it with film.

Here are some pics from my build album on FB

https://www.facebook.com/media/set/?...3418612&type=3
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Old 10-09-2013, 01:35 AM
  #4575
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Hello Jeremy and others,
I spent a great morning at the local club (LARCS) The Falcon is still going strong and I have started on the new one. I am glad I decided to pull off the film covering on this one as there were a few problems that became immediately obvious. I must have a Monday or a Friday build.
I will photograph the progress and post here.
Here is a pic of a happy me before putting the model away.



Cheers all

Col

Last edited by SeaHawk; 10-09-2013 at 06:18 PM.
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