August 2013 Published July 5th

28 Aerial photography with RC helis
Stephen Born explains some of the finer points of his area of interest and expertise
40 Zone 2013
A full report from one of the UK’s most recent and best supported 3D competitions
46 DJI Innovations tune-up tips
Top tips for getting the best from this latest RTF quadcopter
56 Letter from America
Rotorworld’s US correspondent, Tim DiPeri catches up with reports from last fall’s fun-flys
60 Flybarless Systems: Mikado V-Bar
Our series looking at the latest flybarless control systems continues with the popular V-Bar
67 Win the latest RTF heli
Your chance to win the latest Assault 450 DFC RTF heli from Hobby King in this month’s competition

04 Word of mouth
The editor discusses the latest model helicopter goings on
06 Straight up
The latest news from the world of R/C model helicopters
24 Cutting edge
All the latest and greatest new model heli products
38 Through the lens
One of our favourite shots from this month’s collection
68 In tray
More of your letters, news and views
71 Coming up
The RW events listing updated for the 2013 season
71 Next issue
What to look forward to in RW issue 89 out in August 2013
72 UK buyers guide & classifieds
The best model heli shops, products and services
73 Rotorworld subscriptions
Get your favourite R/C heli mag delivered to your door

10 T-Rex 600 Nitro DFC
We test this classic and firm club pilot favourite that’s been given a complete makever
20 Wren 44 Turbine
Iain Erskine tests out the latest improvements to the renowned heli jet engine
34 Magnum Center-Glide Bearing System
Tim DiPeri gives the latest Magnum Fuels nitro engine upgrade product a try
50 T-Rex 800 Trekker
Dave Dijkmans pushes Align’s big daddy heli with the full flight test treatment
64 Reviews update: T-Rex 700E & Blade 450X
Jamie Cole updates us on how two models on our longterm test fleet are holding up

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