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110" TIMBER Assembly Thread

Discussion in 'Giant / Scale ARF Build Threads' started by AKNick, Jul 16, 2019.

   

Which Gas Engine will you use!?!?

  1. DLE35RA

    5.1%
  2. DLE55RA

    33.3%
  3. DA35

    5.1%
  4. DA50

    23.1%
  5. OS33

    0 vote(s)
    0.0%
  6. Ummmm yeah..... I'm going electric

    20.5%
  7. EME35 But will you use the electric start version???

    2.6%
  8. DA60

    5.1%
  9. GP61

    2.6%
  10. GP38

    2.6%
  1. zgrachak

    zgrachak New to GSN!

    Hello

    I have a DLE55RA. At the moment I have installed a 22x8 VOX wood propeller. Max rpm on the ground is aprox. 7000 rpm. Engine has run aprox. 5 hours (1 Gallone). I will change prop to 22x10 because the aircraft is rolling away at 1500 rpm (on pavement).

    How many rpm (idle & max) do you have with the DLE55RA?

    regards

    zgrachak
     
  2. AKNick

    AKNick 150cc

    2,492
    4,028
    113
    Alaska
    I’ve never put a tach to my plane sorry. I’m swinging a 23x8CF, it doesn’t roll on the ground at idle, maybe a tiny bit. The plane is pretty heavy and likes to stay put. I tune for a steady idle and smooth transition to WOT. A good tuning method to look up is Terry’s Engine Tuning guide (should be able to look it up easy enough) Sorry, not much help.
     
  3. Thank you, I plan on using the recommended arms as well. I hadn't heard of anyone using them yet and was curious how they worked. What sort of deflection numbers are you seeing on surfaces?
     
  4. Thanks Nick, I hear what your saying about rudder and full span ailerons. I might go a bit bigger on the rudder servo. At this moment I won't be able to run full span due to channel restrictions, only an 8 ch. (For now) I've also picked up a power expander (smart fly competition 12) so I can get (and keep) good voltage (8.4) to all my servos at the same time. Thank you for your help! I hope to work on it this weekend. I'll keep y'all posted!! Thanks again!
     
    AKNick likes this.
  5. Thanks for the info on the servo spreadsheet! That was great to look at all of them on the same page. Appreciate it!
     
    WMcNabb likes this.
  6. AKNick

    AKNick 150cc

    2,492
    4,028
    113
    Alaska
    One of the main reasons for the larger servo arms in the wings was keeping the geometry even for full span ailerons while giving maximum flap deflection. Basically the flaps and ailerons are matched (move at the same rate of travel/always in sync) throughout their entire movement when in full span ailerons... yet when you dump the flaps the flaps only will extend down like a barn door.
     
    WMcNabb likes this.
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