ORIGINAL: johnny_gr2001
I would like to hear your opinion about SIG Four Star as a Trainer. <snip> Please, i would be very happy to read your opinion.
Like it's smaller sibling, the Four Star 60 is a great choice
for a first low wing and second model.
It could be used as a trainer provided you used the right engine for it, but I wouldn't recommend it as the wisest, and certainly not the best choice you could make for the learning process. You're just making an already difficult (if taught properly) task harder to accomplish if you do.
Stick with established convention. Using a stable low powered slow high wing trainer is not convention simply because it's "always been done that way", but for the same reason the NAVY or AIR FORCE doesn't start its studs out in an F-22 Raptor or even a BAe Hawk for either screening or ab initio training. And no, it's not just about the money with them either.
If you want a visually significant airframe in a good trainer, go LT-40. KISS and inexpensive with a 46LA and sell the combo when you move up to the Four Star - if it survives the training and early post solo process. I'd use a 70 Surpass II only if you must. Less power is more
for training.
Why? Whilst Four Stars have a clever aerofoil & do slow down well for landing - they are real floaters - but are nowhere near as stable - or draggy/slow - as a high wing trainer such as an LT-40 or Sky Raider Mach 1. I suspect many suggesting otherwise have forgotten this, and how hard it all seems to the early student, which is easy to do as the memory of the experience diminishes with the passage of time and aquisition of experience.