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I built a 10 cell pack, and installed the controller. (I use a standard setup in all my planes, which means I can swap drives in 3 minutes) I mated the motor to a 3:1 Master Airscrew gearbox. I went up to the flying field at about 10:00 with reservations; it was quite windy (like the Saturday we went to Midwest RC, but more so). I first flew the Lazy Bee on 7 cells, to get a reference. The grass was very long, and it would not ROG. I had to hand launch for the first time ever. After which it flew very well. I then put in the 10 cell pack. It took off like the proverbial scalded cat, flew big loops etc, until the prop fell off (!) The grass in the field is about 3 feet high, so I never found it. I guess it will wind up in a hay bale. I then borrowed a 11 x 6 prop, flew again on the same battery to the accompaniment of comments like "plenty of power there!" from the glow motor bunch. The higher wing loading actually helps it to handle windy conditions. Conclusion: from now on I fly 10 cells and I had best buy an Astro 110D charger. Regards, Steve
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