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 5 of 5

Thread: mh27


  1. #1

    Join Date
    Apr 2007
    Location
    TRACY, CA
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    mh27

    This forum needs somthing fresh to crash, I know there has been a few attemps to build a quickie with the mh27 airfoil, and the results didn't pan out apparentley. Coffey, a good friend, has a mh27 alum mold and we had to give it a try, so he sent the mold to Sam and had him build a couple wings, one with the ailerons out on the tips and cut in a little deeper. One of the complaints of the mh27 is it looses it's ailerons at slow speeds, hopefully this might help. The other wing was built more conventional. The other issue with the mh27 was i'ts a bit pitch sensitive, Coffey knew the builder of the mold and thought the wing may have some washout. If this wasn't taken into account while building, it could pose some of these issue. Sam did a great job as usual laying up a couple wings. The wing does have some wash out, two tenths of a degree. The leading edge was pretty sharp, this too may have posed some problems. I've set the wing up a little over two tenths positive and sanded some more radius in the leading edge, the fuse is a copy of a vortex, and the tail is a copy of one of Sam's with a skinned hinge, it's not quite finished, but I thought I'd post some pics. ill post more pics after its cleared
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Zx71579.jpg 
Views:	11 
Size:	241.8 KB 
ID:	1809112   Click image for larger version. 

Name:	Lg18113.jpg 
Views:	9 
Size:	101.5 KB 
ID:	1809113   Click image for larger version. 

Name:	Mr41464.jpg 
Views:	8 
Size:	145.9 KB 
ID:	1809114   Click image for larger version. 

Name:	Yr48500.jpg 
Views:	8 
Size:	143.6 KB 
ID:	1809115  

  2. #2

    RE: mh27

    I can cut you core for mh27 so you try what ever you want?
    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  3. #3

    RE: mh27

    did you set the wing to -1.5 neg aoa
    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  4. #4

    Join Date
    Apr 2007
    Location
    TRACY, CA
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: mh27

    the wash out starts at about twelve inches in from the wing tips, if the center of the wing was at 0 deg the tips would be -2 tenths, so i set the wing at 0 at the tips, and this is + two tenths of a deg next to the fuse.

  5. #5

    RE: mh27

    ComuFoil Pro says it should be the whole way out
    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com


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 04:47 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.