C Helicopter Duration (Multi round)
Overview of Rules:
Helicopters go up like rockets and spin down as slowly as possible. In the multi-round event, the goal is to make 3 flights with 2 models, all over the 4 minute max time. If there are ties, you'll be able to use a third model for the final flyoff round, per Pinkbook rule 15.12.2
Tips for Beginners:
Like any duration event, consistency is key. After you can consistently deploy your helicopter model's blades, you'll need to worry about finding thermals. Of course, getting a model back to make a third flight is also important.
Advanced Tips, including links to plans: https://sites.google.com/site/xnarcompetition/duration-events/helicopter-duration
Rules Link:
The link to the rules is located at: http://www.nar.org/pinkbook/32_HD.html
Links to Companies which sell kits: