Open Spar surgery  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       



All Forums >> RC Airplanes >> Composites Fabrication And Repair >> Open Spar surgery Page: [1]

Login
Message << Older Topic   Newer Topic >>
Open Spar surgery - 2/9/2008 5:43:50 PM   
mike the snake


 

Posts: 122
Joined: 2/2/2008
From: santa rosa, CA, USA
Status: offline 		I fly Dynamic soaring. We go over 300 MPH, the world record is 313 MPH. The planes we fly are amazing, all composite high wing loading (mine is at 32 ounces per square foot!) molded gliders that experience over 80 continuous G's for hours at a time.

The Opus MC3 is a 2 meter glider that has gone 308 I believe. I've taken this glider to 297. Unfortunately this plane skipped across a rock, hitting the underside of the wing. While the damage doesn't look all that bad, the spar cap on the bottom is snapped. Basically ruining the wing for any more high speed action.

I worked for a couple years at a full scale glider port, where I learned a lot about composites repair, along with molding and bagging my own models. I learned about doing invisible repairs. I am repairing this Opus to where it should be good for fast DS again.

The carbon cap is broken, to be strong it needs a very specific repair.

I scarfed into the cap, deepest at the crack, then graduating in steps up to the skin. I will insert carbon tow into each level, ending with the longest to flush with the top of the wing. When I'm done, it should be close to as strong as it was.

I'll post more pics as the repair continues

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize
       Post #: 1

RE: Open Spar surgery - 2/10/2008 1:58:11 AM   
djr1007


 

Posts: 234
Joined: 3/21/2005
From: Tucson, AZ, USA
Status: offline 		Mike:
I'll be following this closely since I have a repair I need to do and never done this type of work before.
My first question, can you explain in a little more detail how you "scarfed" down thru the cracks?
In my case I'll be fixing a series of fiber glass cracks in a fuse.
Thanks, Dan.

(in reply to mike the snake)
       Post #: 2

RE: Open Spar surgery - 2/10/2008 2:58:01 PM   
skull1971



Posts: 745
Joined: 4/24/2006
From: Willis, TX, USA
Status: offline 		Where could I find more info on Dynamic Soaring? Sounds real hi on the cool factor

_____________________________

ERIC, Revver Bro. 159, NMPRA 59i, Knucklehead #1
What happen? The ground got in the way of the plane!

(in reply to djr1007)
       Post #: 3

RE: Open Spar surgery - 2/10/2008 4:21:27 PM   
ChuckA


 

Posts: 112
Joined: 8/31/2003
From: Tullahoma, TN, USA
Status: offline 		Sounds like pylon racing on a mountain top. Forty years ago, I though I would like pylon racing but I never figured out a way to fly from under my truck. what do you hide behind while flying your cannon shells?

(in reply to skull1971)
       Post #: 4

RE: Open Spar surgery - 2/11/2008 5:18:47 PM   
skull1971



Posts: 745
Joined: 4/24/2006
From: Willis, TX, USA
Status: offline 		LOL,, you don't fly pylon from under your truck! You just wear your little hard hat, run around in a circle with a guy following and screaming at you.

_____________________________

ERIC, Revver Bro. 159, NMPRA 59i, Knucklehead #1
What happen? The ground got in the way of the plane!

(in reply to ChuckA)
       Post #: 5

Page:   [1]
All Forums >> RC Airplanes >> Composites Fabrication And Repair >> Open Spar surgery
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.313RCU1