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Tired of only being able to fly 3-4 min with your Draganflyer baby? the new generation of battery: Litium Polymer or LiPo has just been created for that purpose: extending flying time because of an unseeen yet capacity to weight ratio. You can now expect on an average 15 minutes of cordless and pure flying fun.
Maybe the best brand on the market for Li-Ion and LiPo.
It's competitor: ThunderPower is gaining marketshare in the USA.
I plan to use them as well on my Hornet 2
Plug for controlling cell on the left, on the right 4mm gold plugs with 2.5mm wire to transmit power...
LiPo are expensive, LiPo are Dangerous so you must handle them carefuly and charge them safely... If you charge them too much (outpassing current charge with 100mV) and they can explode. If You store them in a place and forget them, under some condition (less than 2.8V per cell), they will destruct themselves.
A good charger is the KOKAM LIPO-402, able to take care of Your 1S,2S,3S an 4S pack.
It is mandatory to stop using them if cells go under 3V, (remember at less than 2.8V/Cell they will loose capacity and be damaged), so stopping at 3V is not a bad idea. A lot of device are sold in order to help you watch in realtime the state of your cells. Most of them are made of a single CI (a comparator with a fixe reference at 9V (33S)).
You can also build Your own device (see below and for a lot less). This system has a big high luminosity 10mm LED (but some use buzzer) which blink when it is time to stop. In this case I recommend to land very fast and switch power off.
For 2S to 10S pack.
Voltage trigger from 2,5V to 3,4V
As stated in the documentation, You should NEVER use any water to stop a Litium battery fire, the water is reacting with the Litium and make the things even worse. I recommend to ALWAYS have 1-2Kg of sand in the area. Watching a helicopter burning is not the best way to make the bank officer Your friend... For the same reason DON'T charge battery inside Your house!
Build it yourself!
Voltage monitor for LiPo A PDF that I've found on RC Universe is available here. Cost of buid less than 3euro!!!
Independant Cell charger. So you can charge cells separatly. In the picture below, white plug is the common. Be careful to switch your charger to 1S charge mode (3.2V) when charging cell indep. or you will destruct your superb pack
In the draganflyer...
Before the end of months I will be able to post a video here
1500mAh LiPo Pack 3s 49.90â¬
Kokam LiPo 402 89â¬
LiPo Protect analog 19â¬
www.rclipo.de A german site with a lot of battery and choice. The seller has given me good advices...
Future is exciting! hydrogen cell are expected in 2007...
This tricopter/ tri-rotor is a hobby project. Three MEMS gyroscopes and a two axis MEMS accelerometer are used as sensors. It performs very well in aerobatics ("acro mode"), but it can also hover on its own ("hover mode"). This time with the full PLANS to do it yourself (you need to be able to build it through) All content is published under CC Attribution-Noncommercial-Share Alike 3.0 Germany Video in action Tricopter - Flips and a little bit of gardening from …
<><><>X-UFO R/C SpaceshipA cheaper (200euro) alternative to the draganflyer (800euro)Measures 49 x 49 x 7cm (l x w x d). UFO uses 1 x 12V batteryAvailable at www.boysstuff.co.uk, in this page HEREI even found found a video (wmv 6.54Mb bad quality) …
bonjour!j'habite en nouvelle caledonie, dans le pacifique sud, j'ai achete un "cerveau central " de draganflyer sans rien autour (excepte des rotors en piteux etat ),et ai envie bien sur de monter le bidule.....(un vieux reve) avant d'aller plus loin, je pilote des avions rc depuis 22 ans maintenant, et des helis depuis 10 ans( concept 46 vr full zeal et vigor cs avec un ys 80)...........je ne suis donc pas un total debutant.....En fait le draganflyer est vraiment très …
Mike Dammar has one more time done it! the greatest innovation for new comers and pilot enthousiast: The Draganflyer V Ti R/C Helicopter is a 3 heading lock gyro stabilized helicopter now with 7 electronic sensors to detect the horizon and assist the pilot if he get stressed to much. An optional Eyecam Wireless Video System, is also available in a package at $999.95 (780â?¬). Trust me it is one of the best aircraft design of the last 20 years. …
Build your own roswell:www.ifrance.com/Phobos-flyer We planned to build our own roswell, using regular component. Buy a roswell flyer:http://ourworld.compuserve.com/homepages/larry_flewelling/index.htm Larry is selling the roswell at a very good price : 350$ !!!! Links: http://www.nyblimp.com/roswell/benton.htm Benton modify the frame too. http://www.nyblimp.com/roswell/mount.htm Roland modify the frame too. http://www.nyblimp.com/roswell.htm Some links what others people do to change the frame. http://www.seas.upenn.edu:8080/~erdinc/octarotor.html Interesting links with different project (commercial, military, university) some lines about an octarotor saucer.... Autopilot: Do it yourself UAV open source project Autonomous flight …
Roswell Flyer Manual The following instructions are meant to guide you through the use and assembly of the alien technology known as the Roswell Flyer. Your attention to detail and safety precautions is mandatory. As we can not be there to help and guide you, these instructions must bridge that gap from what sits in front of you, a box of parts, and the final product, - radio controlled, silicon based flying device. Neatness and accuracy count. You can build …
Description Les hélices sont Ã pas fixes comme sur un avion, plus elles tournent vite et plus la portance crée est importante.le Draganflyer possède 4 moteurs indépendants -> il y a 4 contrÃ´leurs de vitesse qui fonctionnent sur le principe de variation de la valeur de tension continue (PWM: pulse wide modulation). L'interface de puissance est réalisé au moyen des 4 transistors indépendants.le Draganflyer possède 3 asservisements: lacets, roulis et tangage -> il y a 3 gyroscopes piézo-électrique de marque …
Does the Roswell Flyer use stepper motors are simple DC motors ? No it uses cheap mabuchi motor, but each of them is "drinking" 2-3A, multiply by 4 and you understand that with 900mAh, you can only fly 4 min... Do the electronics contain a gyroscope to calculate level flight ? not only one but in fact 3! Does it contain a CPU and software to calculate motor speeds ? it contains a micro controller with no reference and a …
nullCosts Can be bought at www.draganfly.com for 80â¬ + shipping costs. Overall view The original frame is weak in many places and was designed more for indoor flying. A lot of people work on the Roswell Flyer and they all designed their own frame using carbon pipes. I decided to buy the carbon upgrade frame. As usual, all models: Roswell Flyer (sold out), HMX4 (copy of previous), Dragnaflyer are sharing the same design and are fully compatible. They were all …