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Easy way to catapult EDF jet.

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Easy way to catapult EDF jet.

Old 01-06-2019, 12:02 AM
  #26  
Joseph Frost
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Pretty lively bird on 4S.
Today's action with the little "Stinger" off the grass for a change.
(Stinger launch)
Old 01-13-2019, 11:51 PM
  #27  
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Hawk stall!
Must be the worse catapult launch launch with the "Hawk" in the last 9 years. This morn while using very old slight puffed up lipo and not pulling enough tension on my cord, bit wobbly during its stalls but with bit of quick nose drop action, off she went.
(Hawk worse bungee launch)
Old 06-19-2019, 01:28 AM
  #28  
Joseph Frost
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Flew catapults in strong wind couple days ago, shows how easily this model can handle it even on low 6S set up. My second flight I accidentally loaded model with the battery I flew day before well d/charged, and only after couple of minutes I wondered why I lost the power mid air?
(Hawk launch in Coffs in strong wind)
Old 06-23-2019, 01:15 AM
  #29  
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Never ending fun with this model, latest action footage at the home field.
(Hawk in action)
Old 09-23-2019, 12:54 AM
  #30  
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Few more catapults in the log just short of 800!
(Catapult action)
Old 11-29-2019, 01:44 PM
  #31  
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Another bungee launch design.


Sleek look after some paint brush art work finish.


Honey, down on your knees!


"LET GO", when I say!


Perfect catapult!
Latest addition to my EDF bungee fleet, the first flight asking my Darl to go down on her knees.
Even with lack of power the model launched perfectly.
Old 01-15-2020, 12:10 AM
  #32  
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10 years and the good old "Hawk" still going.
(Simple EDF jet catapult launch)
(Nice beach arvo with Hawk)

Sandy pit stop.
Old 01-25-2020, 12:20 AM
  #33  
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Weekly action with the "Hawk", flying even off the roughest air strips to demo the easiest way to launch safely.
(Doesn't get rougher)

Ready to go!

Bungee hook release.

Hook drop off.

Some variety.

Pretty rugged strip.

Off she goes!
Old 08-15-2020, 01:19 AM
  #34  
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Never ending joy with this vintage toy, after decade of constant flying action. Another fine beach day, enjoy.
(Hawk on winters day)

Zooming along the sand.
Old 11-04-2020, 09:33 PM
  #35  
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Not an ideal conditions but still having fun with this classic "Hawk", another hawk join me for a while.
(Almost caught)

Off you go!
Old 01-01-2021, 12:03 AM
  #36  
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EURO fighter catapult launch.



Old 01-12-2021, 01:32 AM
  #37  
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Into the Easterly header.

It speaks for itself.
Old 01-23-2021, 12:24 AM
  #38  
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Latest addition to my sling shot EDF jet is this Lightening Striker, just converted, to keep it simple.

Eliminating all the problems.

After conversion.
Old 05-11-2021, 12:29 AM
  #39  
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Euro day for a variety.

Hold on tight honey!

Off she goes!

Old 06-10-2021, 02:05 AM
  #40  
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It wasn't so easy last Sunday while trying to maiden one of my latest creation, the 8S powered Hornet at slightly over 3kg AUW. Launching down wind, off pretty rough grounds and negative AOA, there was no lift off!
Rather than having another go later in the day into the head wind with more tension on the bungee I have decided the safer option to modify my bungee hook up by fitting a new skid fin under the nose for more positive AOA, also making up a new heavy duty sling shot cord for models up to 5kg AUW.

Ready for a maiden.

No lift with negative AOA.

New hook up skid with positive AOA.

New HD cord created for heavy EDF jets.
Old 06-10-2021, 02:08 AM
  #41  
Joseph Frost
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It's lot easier with the lighter models.
(Falconier Joe)
Old 06-12-2021, 12:52 AM
  #42  
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No problem launching EDF jets it on my own, but always prefer to have someone to release it for me to have full control the moment after release. This time at rather challenging field.
(Falcon launch with the help)
Old 07-04-2021, 01:08 AM
  #43  
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90mm 4S powered "Thunder" in action.
(Thunder on the breezy morn)
Old 07-11-2021, 11:46 PM
  #44  
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Not as easy today, using very old 6S/5Ah lipo (12+years old!) plus didn't pull my cord hard enough, but still took off the pretty crappy strip, LOL.
(Hawk on Mon.)
Old 07-29-2021, 06:39 AM
  #45  
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My bungee cord destroyed under the sun I would like to try the same method with a platform underneath.
Old 07-31-2021, 02:20 AM
  #46  
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I always try to minimize the bungee cord exposure under the sun. Why would you need a platform, just another hassle. Just finished another sling shooter, this time hotted up with the full metal "Mercury" 64mm fan on 4S. Soon taking to the sky, after couple more coats of clear finish to seal it off.

Mini Alfajet as a sling shooter.
Old 10-06-2021, 12:47 AM
  #47  
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Full metal Mercury 64mm powered Alfa , sling shoot day outing.
(64mm Mercury powered Alfa jet test flight)
Bit awkward to hold at release,

now fitted with the release probe.

Old 10-06-2021, 03:32 PM
  #48  
Joseph Frost
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Bit of sling action off the sand.
(90mm Hawk sling shot example)
(Hawk bungee launch)
In action.
Old 05-21-2022, 12:22 AM
  #49  
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Mayday catapult.

Off it goes!
Old 05-29-2022, 07:30 PM
  #50  
Joseph Frost
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Perfect launch.

Under tension rotation.

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