VENTURIs for  6.5 K&B freeflight & U-Control

Something i have been doing the past couple of years. modifying the Sullivan battery holder from NMH batterys to LIPOs . the unfortunate part is the Sullivan battery holder are no longer made . so getting a hold of them  is not easy . Using a 3000 mah lipo 40C 4S battery 14.8V  is the only one that fits this set up..