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 2 of 2

  1. #1

    Join Date
    Jan 2002
    Location
    Hemet, CA
    Posts
    71
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    Sport Jett 46 prop

    Broke in my Sport Jett 46. Now I need advice
    on prop for Hi speed runs in Whiplash Delta.
    Plane is approx. 3 3/4lbs, I am using the stock muffler (red.
    Maybe APC pylon ? 8.8 in with 8.75-9.25 pitch? Wildcat 15% nitro
    Mike Longnecker
    76O-992-9176
    Palm Springs,CA

  2. #2
    bob27s's Avatar
    Join Date
    Apr 2002
    Location
    Cleveland, OH
    Posts
    5,556
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    Sport Jett 46 prop

    Hi Mike.....

    there are a variety of combinations you can try.

    I would say to start with a standard APC 9x7, and perhaps then try an 8.8x8.5 pylon prop or the 8.75x9W. Try and keep the SJ-46 engine in the 17K rpm (peak, on the ground) range... or slightly above. You can keep adding pitch as long as you stay in that rpm range. Another prop that works pretty well is the 8.5x7.25 pylon prop. The engine will really turn that sucker, and it will unload big time in the air.

    You may also want to post the question in the Extream Speed forum. There is quite a bit of experience in there

    http://www.rcuniverse.com/forumdisplay.php?forumid=162

    I trust this will be helpful.

    Bob
    Bob Brassell
    Jett Engineering - Engine Mfg Support Forum Host
    rjbrassell@gmail.com or bob27s@hotmail.com
    RB-78


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 09:19 AM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.