I review the B-17 1875 mm from Hobby-King. Here are my initial impressions and the must-do items before you attempt to fly this RC aircraft. This is an independent review; I purchased this warbird myself. It was not provided by the manufacturer or distributor. All opinions are my own and not necessarily endorsed by Hobby-King or it's affiliates and subsidiaries. I have no formal business arrangement with said entities.
Battery: 4S 3300 Mah LIPO, Getting about 3 - 4 minutes flight time.
I did not use the CG indicated in the manual. The safe CG from my experience and researching other users is 16" (40.6 cm) back from tip of nose. If you want to use a larger battery pack, the CG might (might) be safely moved forward but use caution.
Because the props on one side of the wing counter rotate with the other side, they provide left and right hand props. So be sure that the leading edge of each prop faces inwards towards the fuse.
This plane can be purchased at: hobbyking.com/en_us/b-17-v2-flying-fortress-pnp-wingspan-1875mm-silver.html
There is an extensive thread on this plane spanning 2011-2022 on RCGroups. www.rcgroups.com/forums/showthread.php?1463141-HobbyKing-B-17-EPO-1875mm-Memphis-Belle