HexaTiger,
I was in the same predicament as you, looked like a cool solution for my F550 but not able to find any write-ups on it. I rolled the dice on this kit, ordered it, and just received it last week from Helipal. The box was poorly packed, busted open (not necessarily Helipals fault), and one of the carbon tubes was missing. Emailed Helipal requesting a replacement. They did respond within 24 hours (pretty good support IMO) but told me the that the cost of shipping just the replacement tube alone was too high for them to cover. They did offered to add the replacement to my next order for free which I thought was pretty solid. While I appreciate their responsiveness and support I'm not sure I'll shop there again, the wait time and shipping costs are too high for me. They zapped me $28.50 to ship a $55 part that weighs less that 1.2kgs. Ouch! Well, I still wanted to mount it up and try it, so I ended up sourcing carbon tubes from Goodwinds which cost me another $35 so now I'm into this thing for $120.
Having said all that, the kits itself isn't bad, it's a clever design, the quality of the parts is good and fit well together, although not worth $83 to me. The issue with my set-up is that I'm using a 5500 [correction-5000mAh] 4S pack (530g) that's offset but a Turnigy 2D gimbal and Mobius camera up front and I can't get the fore/aft CG right without adding a bunch of weight out front. And this is my smaller battery, the other is a RMRC 6600 (660g). Maybe with a 3s pack, a heavier gimbal and camera set-up it would be fine, but doesn't work for me, which is really disappointing. Again, nothing wrong with the kit itself, but do a little experimenting with your rig to see how the CG will play out.
My 2 Cents,
Jim
