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Old 12-11-2006 | 03:03 PM
  #9  
jaka
 
Joined: Dec 2001
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From: Upplands Vasby, SWEDEN
Default RE: LT40 OS vs SK

Hi!

Why, Why on earth choose a .46 ball bearinged engine for a high winged trainer plane?? Puzzles me.
I have been into this thing called R/C flying since 1975, competing in pylonracing, scale, aircombat and you name it and been active learning new fliers get started for the last 30 years and believe me, a OS LA .40 or TT .42 plain bearinged engine is more suitable for a high winged trainer airplane.
Why ? Because it's deliver it's power in more gentle manner than the more powerful .40 -.46 ballbearinged engines.
Then people say : "You can always throttle down"...excuse me for laughing...but saying so reveals their lack of knowledge about how it is learning to fly and the hardship a novice is facing when he or she is taking the first steps in learning R/C flying , especially so if you are at senior age.

I have seen so many people comming out to the field , especially people over 50 with their new high winged trainers powered with .46 ballbearinged engines and noticed how they have had difficulties controlling their airplanes due to the high speed. When I have asked them why they have choosen a .46 engine they have all said that the hobby shop recommended it...


To have a OS LA.40 or TT.42 perform good on a trainer it's vital that you choose the best props you can. And the best props to use are 11x5 or 11x6 APC, RAM , Graupner Cam prop or Bolly of the same size. A 10x6 is not, I repeat not the prop to use if you intend to learn flying a high winged .40 trainer. At least not if you fly at sea level.

When you have learned the basics of flying then you can get that ball bearinged engine and learn more advanced maneuvers flying a low winged airplane.