Are you thinking of taking up Model Helicopter Flying then please read these file they might just save you some money in the long run.
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• Ok so you want fly RC Helicopters
• From Buying to Flying
• BMFA Manual 2009
• Helicopter A Test May 2009
• Helicopter B Test May 2009

• Multiple head spead settings with align RCE-G600 Governor and DX7 Radio
• Troubleshooting and repair tips for the OS 50 Hyper Engine