Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Results 1 to 1 of 1

  1. #1

    Join Date
    Apr 2005
    Location
    Soap Lake, WA
    Posts
    101
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    ISC PITTS CHALLENGER ll

    I have noted a lack of info on RCU or anywhere else about the ISC 1-800-COLLECT PITTS CHALLENGER ll Biplane. I have been flying this one for years and mine weighs 23 Lbs. I use a Zenoah G-62 with a laminated 22X10 prop for power.
    0 degrees down thrust. 2 degrees right thrust. Both wings at 0 degrees incidence. Horizontal stabilizer -2 degrees.
    I have just gone through the whole airplane and made a mistake on setting the CG at 33% of the MAC. The flight was almost a complete failure...she was tail heavy because I got rid of the magneto setup and went with RCXell ignition which dropped almost a pound out of the nose. I checked the CG after carefully calculating it to be at 7.5 inches from the leading edge of the top wing. This was wrong and I almost flew into the crowd and the tail hung low during turns. I barely made it back to the runway and landed it in one piece. I am now adding an aluminum bracket to the firewall to hold the nose weight just under the cowling and I am going to fly it with the CG set at 7 inches from the leading edge of the top wing. (7 inches is 30% of the MAC)
    I am using 4 aileron servos via the new Smart-Fly sport+ power expander which allows me to plug each of the 4 aileron servos into thier own port vs. Y-harnessing. Since the power expander is buried and I am unable to tell whether it is energized or not I wired a green LED up to the cockpit deck. I really think this power expander is cool! (It's my first one)
    No it does not hover with the G-62. It would need to weigh alot less. It does however have excellent vertical performance and flies very scale with smoke on.
    If anyone knows the proper CG of this airplane please let me know!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Sq48128.jpg 
Views:	39 
Size:	69.9 KB 
ID:	1886877  


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 05:23 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.