Go Back  RCU Forums > RC Helicopters > Electric RC Helis
Reload this Page >

Mini Dragonfly help

Notices
Electric RC Helis Discuss electric rc heli's such as the Piccolo, Logo 10, Logo 20, Hornet, Eco.

Mini Dragonfly help

Old 01-09-2005, 10:57 AM
  #1  
still burnin
Junior Member
Thread Starter
 
Join Date: Aug 2004
Location: Starksboro, VT
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default Mini Dragonfly help

After flying planes I thought I would give helicopter a try. I got a Mini Dragonfly so if I destroyed it learning to fly I wouldn't be out a lot. My problem is that for one the heli likes to drift left (I was told this is normal). Second is that I get it in the air (I'm not good at flying it yet but can keep it in a 5' area while trying to hover) the heli is smooth for 3-5 seconds then starts shaking, slamming the tail into the ground. The flybar paddles moved on me and I am not sure what pitch if any they should be at to start. Do I have a flybar out of place or wrong center of gravity or is it something else?
Thanks, any info will help.
Matt
Old 01-09-2005, 01:04 PM
  #2  
loadthis
Member
My Feedback: (3)
 
loadthis's Avatar
 
Join Date: Dec 2004
Location: Fort Walton Beach, FL
Posts: 89
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

The Death Wobble.......

Tighten the blades until they barely move under their own weight when you tilt the heli on its side. Before you spin up the blades, advance them a little. Push the leading edge closer to the flybar. This should help.
As for the flybar, get the paddles as even as possible when the swash is level and trims on the radio centered. Measure each side to make sure they are the same length from the main shaft.

You can also search "death wobble", "tail bounce" etc to find more info.
Old 01-09-2005, 01:07 PM
  #3  
Grassman
Junior Member
 
Join Date: Sep 2003
Location: Lees Summit, MO
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

burnin, the center of gravity of these birds is extremely important. I have one and after attempting to move all of the electronics to the front and failing I had to add some weight to the front. The little added weight isn't a problem though because I am running on a 3s lipo...I don't know if it will work with the stock battery pack. Try to get the landing gear to set down evenly when the bird is lifted by the flybar paddles. Here is a site that talks about center of gravity.
http://home.earthlink.net~ibsniper/home.html

Jeff
Old 01-09-2005, 06:13 PM
  #4  
still burnin
Junior Member
Thread Starter
 
Join Date: Aug 2004
Location: Starksboro, VT
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

Thanks for the info, I will give both a try.
Old 01-14-2005, 09:59 AM
  #5  
Rambo-RCU
Senior Member
My Feedback: (1)
 
Join Date: Oct 2002
Location: Flatwoods, KY
Posts: 205
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

One last thing don't advance or retard throttle suddenly , it can shift the blades.
Old 01-15-2005, 12:50 AM
  #6  
roofus4
Member
 
Join Date: Aug 2004
Location: SpringTX
Posts: 45
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

ORIGINAL: Grassman

The little added weight isn't a problem though because I am running on a 3s lipo...
Jeff
Grassman, I noticed you are using a three cell Li-Po. I am new to both helis and electrics. Isn't the 3 cell Li-Po (11.1 volts) too much for the motor? Obviously not, if you are using one. Could you explain to me why it is not too much. Also, what capacity/brand Li-Po are you using and how long does it last.

Thanks,
Rob
Old 01-16-2005, 05:27 PM
  #7  
clovus
Senior Member
 
clovus's Avatar
 
Join Date: Sep 2004
Location: B, AUSTRALIA
Posts: 1,867
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

just a thought, make sure your battery doesn't move when flying. Happened to me, but I solved it by using two rubber bands.
Old 01-16-2005, 05:29 PM
  #8  
clovus
Senior Member
 
clovus's Avatar
 
Join Date: Sep 2004
Location: B, AUSTRALIA
Posts: 1,867
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

Forgot to mention that when my battery gets low the heli shakes -once the battery is charged again it is fine.
Old 01-17-2005, 07:22 AM
  #9  
fireplug1111
My Feedback: (21)
 
Join Date: Mar 2004
Location: Saint Cloud Fl, FL
Posts: 399
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

ROOFUS4--

To answer your 11.1 li-poly volt question. Yes it is a little hig however. when you advance the throttle is starts with 0.0 volts then the voltage increases as you advance the throttle. this is how you change altitude. so lets say at 3/4 throttle you might be only up to 8.4 volts. and so on. does this kinda help. Keep in mind this is for FP blades.
Old 01-17-2005, 05:24 PM
  #10  
Grassman
Junior Member
 
Join Date: Sep 2003
Location: Lees Summit, MO
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

Roofus4, I am using a Thunder Power 860 mah...fireplug explained how I can use one. I have never given it full throttle...that would most likely burn up the 3-in-1 board. I have not had any issues yet...be careful, however, to monitor you battery voltage because the voltage cutoff for the board is 5V. It lasts at least 20 minutes.

Jeff
Old 01-19-2005, 05:15 PM
  #11  
roofus4
Member
 
Join Date: Aug 2004
Location: SpringTX
Posts: 45
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Mini Dragonfly help

Thanks for the help guys. That really clears thinks up for me.

Rob

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 My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.