Go Back  RCU Forums > Electric Aircraft Universe > Electric RC Jets
Reload this Page >

Easy way to catapult EDF jet.

Notices
Electric RC Jets Discuss rc electric ducted fan or radio control prop jets here.

Easy way to catapult EDF jet.

Old 06-07-2022, 10:20 PM
  #51  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Sling shooting on very cold, windy, Winters day!

Sling shot into strong Westerly off the beach sand.

Bit of a battle in the wind.
Old 06-23-2022, 07:23 PM
  #52  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Rather interesting bungee launch with one of my smallest 30mm EDF "Alpha". Bit of a handful to fly, Ailerons were slight off the trim rolling badly left.

One handed sling shot release.

Quick correction required after KE!
Old 06-25-2022, 12:13 AM
  #53  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Much better sling shot todayafter some re-trim but still KE some 45 deg. after release. More adj. required.

Another dramatic left roll after release.

Great capture shot.
Old 06-30-2022, 01:02 AM
  #54  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

More stable sling launches after new winglet mods.

No more nasty KE after sling release.

More relaxed one hand sling release.
Old 07-01-2022, 10:24 PM
  #55  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

After further mods the catapults are piece of cake with these little handfuls, but landings are another story! I might try to fit a very short thrust tubes to give it a slight down thrust to make the current very nose heavy model back to neutral CofG, but the next build I will definitelly reset the outlets some 3 degree downward, but before I get into 3rd. one, I'll have to write-off one of these, it's only matter of time, but only God knows when, LOL. Another run on doom&gloom day.
(Alfa onJuly gloom)

More mods required to make it perfect!
Old 07-12-2022, 02:35 AM
  #56  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Euro day for a variety.

Euro sling shot.

In action.
Old 07-12-2022, 09:14 PM
  #57  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Euro beach bungee launch.
(Euro bungee launch)
Old 07-18-2022, 01:26 AM
  #58  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Not so easy today!!! The scariest sling launch ever!!! I can't believe the model is still in one piece after the horrendous launch!!! Took out my 90mm "Hawk" just to discharge large 6S/9000mA lipo. Couldn't fitt it further back so the model was extremely nose heavy despite fitting 100g aft weight for counter balance. 500 grams heavier than my usual 5Ah packs, I thought it may struggle a bit getting airborne but not this bad! Should have brought my heavier duty cord as I didn't pull it hard enough for launch, landing skids getting bit stuck in wet sand during launch with very little positive AOA. It was a U turn battle to keep it up in KE's before managed to get safe flying speed.
You have never seen anything like it after I load the footage! LOL.

Extreme nose heavy loaded Hawk sling launch.

1/2 a kilo heavier than my norm.
Old 07-18-2022, 03:32 PM
  #59  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Bit of a battle to get going, the worst ever catapult launch! LOL.
(The most overloaded bungee launch!)
Old 12-04-2022, 04:49 PM
  #60  
Joseph Frost
Thread Starter
 
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,461
Likes: 0
Received 54 Likes on 51 Posts
Default

Easy launch on lighter 5.2Ah pack.



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.