RE: Composite-ARF Integral, kinda build thread
Anyone know of a supplier of pre-built, ready to install Integral replacement wings/stabs that are lighter than what we get from CARF? I know that I can build with balsa/foam and save a ton of weight - but no time to build any longer! Paul
Posted on: 1/25/2010 1:26 PM by Author "pgvillar" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9446678

RE: 99+ Amps drawn by my Hacker C50-14XL
Kjell, Wow, interesint engineering there. Thanks for the pictures. What do you for air exit? Do you have exit holes cut into the rear fuselage section somewhere? Paul
Posted on: 1/19/2010 3:15 PM by Author "pgvillar" in the forum "Electric Pattern Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9429701

RE: 99+ Amps drawn by my Hacker C50-14XL
What's the trick to keeping the 14xl less than 160 degrees? I just started flying E this winter. When summer temps start hitting the 100's here in Texas I am a little bit concerned. I'm flying the Integral, with the air scoops in the front opened per plan. Do I need to do anything more? Paul
Posted on: 1/18/2010 11:21 PM by Author "pgvillar" in the forum "Electric Pattern Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9428206

RE: Composite-ARF Integral, kinda build thread
Kjell, Thanks for the suggestion. I've received similar input for Bryan Hebert as well. So now that is two FAI pilots telling me the same thing. I've also been told that the plan "CG at 205mm" is crazy. Now reading your post, as well as input from other Integral owners I have to wonder why the design of this plane, and the manual are not corrected. While I am impressed with the ability for this plane to do a nice rolling circle, I consider the stock setup (at least the plane that I received) to be very problematic when it comes to flying the FAI pattern. I think my next plane will be the Valiant. Bryan tells me these problems are fixed on that plane. Paul Villarrubia
Posted on: 1/10/2010 1:23 PM by Author "pgvillar" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9403944

RE: Composite-ARF Integral, kinda build thread
I need help with some strange flight characteristics. Background: I purchased an Integral early in 09, assembled it (slowly), and just began flying it. I have 17 flights on it now. Setup is with Hacker 14xl w/22-12. I've flow with the CG right about on the center of the wind tube, and I have also tried flying with the CG forward of the wing tube by 1/4inch. Now the problem: I get the plane trimmed for level flight at mid throttle hands off, and then chop the throttle. Hands off the plane will pitch up. In order to make the plane somewhat reasonable to fly I have throttle mixed with elevator as follows: at high throttle there is 3% up elevator mixing, and at low throttle there is 3% down mixing. That is a total of 6%! I consider this excessive. And, this does not completely resolve the problem, as the pitch characteristics are speed sensitive. For example, after a long down line I pull into level flight with lots of speed. As I try to hold a level flight line a couple things are happening - 1.) the airspeed from the down line is bleeding off and 2.) as throttle is added the elevator trim is changing due to the mix. Bottom line is that it is darned hard to fly a straight line with the plane as it stands today. Other info: wing and stab are at 0-0. I have not measured the motor thurst line, but I am reading that the stock integral has ~2 to 2.5 degrees down thrust. I am thinking that I need to remove the down thrust. Any ideas?
Posted on: 1/9/2010 11:02 PM by Author "pgvillar" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9402715