Originally posted by cupracing
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i tested different configurations and the best one i could find for Balance ( CG ), power and flight duration is with no doubt when using 2x 6S 3000 mAh ( in my case Optipower LiPos that i grabbed in UK when Andy tested the Beam) . I think any 3000's 6S lipos x 2 would do the job (30C batteries for 3D, 20 / 25C with no problems for smooth aerobatics and beginners).
The hardest choice has been the motor. I tried the Scorpion 4025 - 560 and 630 Kv, they are very powerfull but grind a lot the flight time for no real bonus in power ( i mean there is no real use of it), then i dropped in the Outrage 4125-560 Kv with a 13T pinion and this has been the best combo i could get. Nick was flying my own AvantGarde in Orlando and here is the full setup of it just in case :
- OPtipower batteries 2x 6S 3000 mAh ( was their third cycle lol )
- Outrage 4125-560 Kv motor
- CC Ice 2HV 120A ( but a 80 would do the job easy i think, i'll check the logs from Nick's flight and will post them)
- Nexus 616 Mg HV @6.8V on swash
- BLS 251 with stepdown ( 5.9V) on tail
- Gryphon Quasar Hyper BEc set at 6.8V
- 8 Channel receiver Spektrum for Nick, for myself OPtima 9 channel receiver with telemetry module
- 615 mm FBL blades from Gryphon, 139 grams ones
- 95 mm tail Radix blades
- +12 / -12 pitch for flying and Autorotation ( the Gryphon are very powerfull on Auto so 14° is called " Autokill" by myself, guess why..
)- Beast X V3.08 with all stock setup, no pitch boost ( no need with the Gryphon they are sensitive around neutral pitch), no cyclic acceleration
- Max. Cyclic ring as possible
- 2300 RPM on set RPM
I have 2x 3300 Thunder Power 65C's to test but they are pretty heavy and give me a good nose in CG on the heli, and also give a lot of inertia, pretty disturbing in fast pyros manoevers as the heli will " dance" like a plate around it's axis forward / backward even if the FBL system keeps it dead leveled. This is a Con's for 3D but a good setup for fast flying / large aerobatics. But i'll try again and see.
With the 4125-560 KV we could achieve 4mn and 55 seconds with the 2600 's batteries and i can tell after checking Nick's flight log how it went with the 3000's. With a low head speed for gentle learning / hovering i was surprised to reach over 8 mn with the 2600's in my garden, so a bunch of 3000's or 3300's would be adream configuration for a beginner willing to make large circuits / hoverning with a non scarying head speed.
BEst regards,
Fabien
Ps: you will find all these informations within one / two weeks on En construction as i'm setting up a small website for general informations / tips and tricks for the Beam heli range.

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