A "bigger" trainer can be defined a few different ways. The Tower Trainer kit when compared to the GP PT 40 kit is actually about the same size. Despite the 5" advantage that the PT-40 kit has, both planes build out to a 52" fuselage length and around 5lbs. flying weight depending on the engine selected. The PT-40 should have more gentle flying characteristics than the Tower trainer kit, however, because of the extra wing span.

A .60-sized trainer will generally be more stable and easier to see than a .40-sized trainer. It's interesting to compare various trainers in terms of wingspan, fuselage length, and flying weight before making your selection.

Several .40-sized trainers boast wing spans and fuselage lengths as large as .60-sized trainers. Compare the Sig Kadet LT-40 to the Hobbico Hobbystar .60, for example. The LT-40 boasts a 70" wingspan while the Hobbistar .60 has a 71" wingspan. The LT-40 has a 56" length while the Hobbistar is actually an inch shorter at 55". The biggest difference? The LT-40 should build out at 5.5 to 6 lbs. while the Hobbistar weighs in at 7.5 lbs ready to fly.

The best plane to train with is the plane with the widest wing span combined with the lightest flying weight... assuming you don't build it crooked!