ORIGINAL: acdii
I am having a slight problem with my 4*120. They planted corn again this year, and that junk is TALL! Its over 6', and now I am finding that getting the plane over the tops and not scraping bottom to be a challange. I need to get it from 6 feet down to 1 foot as quickly as possible so I dont float into the other side of the field and take out some corn( or more likely damage the plane). The 4* is a floater even with removing the outer bay on each wing. I got the DLE 20 down as slow as it can go too. Since I have to bring it in steep so I dont loose it over the corn, it comes in fairly hot, so not sure what I can do at this point.
I already skimmed the corn with my LT40, thankfully it landed safe, but was rather close as it got the last 2 rows. The last time I flew the 4* I basically slammed it in, which wasnt pretty, but got it down safe, amazing how much spring that landing gear has.
SNIP
If you work at it you may well learn to "SLIP" it in as you pass the corn-line. Standard procedure for short field operations in many instances with 1:1 scale.
Best done with a little bit of extra airspeed. Aileron into the wind, with a 10-30* bank, and OPPOSITE Rudder. In the situation you present you need to be quick like QUICK!
At the corn-line roll into the bank, apply opposite rudder and descend, then as the model drops, go back to level and you will have dropped several feet.
One item that will assist control of that 4* is to cut the aileron tips at about 3-4" from the end and attach the end back solid with 4-8 degrees UP. This really helps that kind of wing. I have 4-star, 4-star 60 and a 120. Any straight wing model with full length ailerons will make landing control much nicer if the tips of the aileron do NOT extend to the end of the wing.
As far as CG is concerned, any CG behind 28% MAC will only hinder your positive control of the machine during such a maneuver. Your choices! [:-]