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 7 of 7

Thread: Tufstrand


  1. #1
    skaliwag's Avatar
    Join Date
    Jan 2003
    Location
    santa cruz, CA
    Posts
    2,364
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    Tufstrand

    Could someone tell me the diameter of the Sullivan Tufstrand please.
    Real Airplanes have Round Engines and Two Wings.

  2. #2
    aspeed's Avatar
    Join Date
    Jul 2011
    Location
    Ruthven, ON, CANADA
    Posts
    1,520
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tufstrand

    I just measured it with a vernier and it is kind of oval.  It is .015"  to .020".  It says it is good to a motor up to .51 cu. in.  I never tried it yet.

  3. #3

    Join Date
    Jan 2003
    Location
    Omaha, NE
    Posts
    283
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tufstrand

    I really dislike tufstrand. It tends to turn flat side into the wind. That suddenly increases the drag and unless the lead out guide is waaaaaay back that causes the plane to turn inward. With AMA making spectra fishing line legal for sport flying I dont see any reason someone would use tufstrand for anything other than reinforcing material.
    Bob

  4. #4
    skaliwag's Avatar
    Join Date
    Jan 2003
    Location
    santa cruz, CA
    Posts
    2,364
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tufstrand

    Thanks for the info. Sullivan's from Brodak has gotten exee. Spyder Wire isn't cheep either but if it has less drag would be a better deal.
    Any Data on what size S/Wire to use for different apps.

    Is the Tuffstrand as good as C/F tow for reinforcing material?
    Real Airplanes have Round Engines and Two Wings.

  5. #5

    Join Date
    Jan 2003
    Location
    Omaha, NE
    Posts
    283
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tufstrand

    Check the AMA site. I believe they require the same diameter as steel. That does nothing to reduce drag but gives you about 5X the strength! Of course that assumes you tie the correct knot. A bad knot reduces the line strength by 50% or more. Again all this is on the AMA website.
    Bob

  6. #6

    Join Date
    Jun 2007
    Location
    Lake Worth, FL
    Posts
    1,009
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tufstrand

    The yellowish color suggests its kevlar.

    There was a period some years ago when people were using kevlar as parachute rigging line rather than spectra or dacron due to its superior dimensional stability, but it has largely fallen out of use main parachutes and is only found in some reserves these days.

    The kevlar that was being used on main parachutes (often packed on the ground and several times a day, rather than in a clean loft like reserves that are packed only every few months that are exposed to sun only if deployed) proved to be more vulnerable to abrasion and the deteriorating effects of constant sunlight exposure than Spectra or Dacron line.

    My experience with using this stuff as stooge release line mirrors that of the parachute industry. It will degrade and fray over time and constant exposure to the sun. OTOH, I have some stainless line sets that are over 30 years old that show no degradation at all.

  7. #7

    Join Date
    Dec 2007
    Location
    Madrid, IA
    Posts
    151
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tufstrand

    ORIGINAL: aspeed

    I just measured it with a vernier and it is kind of oval.* It is .015''* to .020''.* It says it is good to a motor up to .51 cu. in.* I never tried it yet.
    I know several people who have tried it once none who have tried it twice! I can't believe they still sell this
    stuff .. they can't have sold very many sets EVER, much less enough to justify continuing it.



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 05:39 AM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.