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Easy way to catapult EDF jet.

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Old 05-22-2016, 01:00 AM
  #1  
Joseph Frost
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Default Easy way to catapult EDF jet.

90mm, EDF "HAWK", running on 6S/5000, using 15m long nylon string stretch cord and surgical rubber combo with 3.5-4kg tension on the hook. Just pull and let go, can't be any easier and more exiting.
https://youtu.be/TzW_zIdGXI0
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Old 05-25-2016, 05:15 PM
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Upgraded bungee rubber with more stretchy 10mm tube used for spear fishing. Now even less tension needed with some 3-3.5kg pull. Latest video yesty for your enjoyments.
https://youtu.be/rv6AqMxJC_s - Down wind catapult
https://youtu.be/z75sj4aYpAQ - Up wind catapult
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Old 05-30-2016, 09:54 PM
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Another spectacle of easy catapult launch.
https://youtu.be/fBc_6RGhMmk
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Old 06-01-2016, 03:11 PM
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90 degree cross/down wind catapult, while using years old 6S/4Ah/25C battery sitting on the bench with out use. Vid.
https://youtu.be/a_YNTRWPg7w
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Old 06-09-2016, 11:16 PM
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Latest catapult action from rather unusual flying field.

https://youtu.be/8XXqHVUsgR4
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Old 06-18-2016, 11:33 PM
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Latest action yesterday from my favored flying site.
https://youtu.be/c48fo06bkNk
https://youtu.be/sWhdh48KOng
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Old 06-20-2016, 11:33 PM
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Catapulting in strong cross wind today, no one dared to fly so the whole field was my own.
https://youtu.be/qosSGm73FmY
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Old 06-29-2016, 03:26 PM
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Latest beach action on freezing cold winters day.
https://youtu.be/CisCet-1rqM
https://youtu.be/w2cna5TzDr0
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Old 07-03-2016, 12:15 AM
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Another action packed flying day with all sorts of EDFs.
https://youtu.be/mU4RTDuLVJo
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Old 07-03-2016, 09:56 PM
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My way of celebrating Independence Day was another beach flying, and what a day.
https://youtu.be/spdGBAmjIBw
https://youtu.be/yphpS-BVGzc
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Old 07-14-2016, 01:02 AM
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Bit of entertainment for the school kids on vacation.
https://youtu.be/kvj7pwS6FIE
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Old 07-17-2016, 08:41 PM
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Great bungee action footage.
https://youtu.be/_EwydmBpG4g
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Old 08-10-2016, 11:15 AM
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So, Joe.do you have some sort of release mechanism to hold bungee? Like to see that. Looks like you got the bungee launch thing down pat. Way to go..
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Old 08-10-2016, 02:45 PM
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Sorry Body but I don't understand your question. What mechanism? There is none, just hook it up pull it and let go! There is no simpler way of launching EDF jet, Cheers.
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Old 08-10-2016, 03:05 PM
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Originally Posted by Joseph Frost View Post
Sorry Body but I don't understand your question. What mechanism? There is none, just hook it up pull it and let go! There is no simpler way of launching EDF jet, Cheers.
I've got a lever with a rod which holds a steel ring tied to nylon cord, which in turn is attached to bungee cord. Step on lever,,releasing the bungee cord..she goes...
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Old 09-14-2016, 12:01 AM
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Few more catapults in the log book.
https://youtu.be/S2ixXW_AJlY
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Old 10-18-2016, 11:39 PM
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For the change of the scenery took it to different beach today, what a day!
https://youtu.be/nySHO0e-69s
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Old 12-06-2016, 11:57 PM
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Another catapult launching action.
https://youtu.be/xaM2BEtz_7A
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Old 03-02-2017, 02:30 PM
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One of the test flight while running in the new set of 6S/5.2/60C pack of lipos.
https://youtu.be/6SFqcomdLb8
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Old 05-30-2017, 11:33 PM
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After some 20 pretty hairy hand launches I have converted my little "Stinger" also to catapult launch.
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Old 03-29-2018, 01:42 AM
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Easter Greetings.
Few more flights off the magic beach, Easter Greets.
- cross/down wind launch.
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Old 05-07-2018, 01:13 AM
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Heading towards "700th." sortie! Regular maintenance pays off!
Never ending fun with this one, LAS and more action ahead in perfect Autumn conditions for flying.
(Hawk day)
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Old 06-07-2018, 08:33 PM
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This is what happens when you launch tail heavy model! After some hard work it touched down softly-softly.
(Hawk catapult catastrophy)
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Old 06-08-2018, 11:19 PM
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While using 6 various batteries to fly this model it can be easy to stuff up if not careful, like yesty. Same pack today but 35mm makes all the difference.
(Hawk field launch CG check)

Action!
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Old 07-12-2018, 12:41 AM
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Catapult lift-off!


Off she goes!


Great action shot!
Another day of catapult action for a lunch.
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