Go Back  RCU Forums > RC Airplanes > Composites Fabrication And Repair
 What would you do with crack? >

What would you do with crack?

Notices
Composites Fabrication And Repair Carbon Fiber, Kevlar, Fiberglass and all the newest high tech composites

What would you do with crack?

Old 07-22-2008, 04:14 PM
  #1  
Thread Starter
 
Bass1's Avatar
 
Join Date: Dec 2002
Location: Va.Beach, VA
Posts: 2,472
Likes: 0
Received 1 Like on 1 Post
Default What would you do with crack?

Hi, I have an opportunity to purchase a 50cc ARF for a good price however there is a hairline crack on the top of the cowl that bugs the heck out me. I thought of putting a decal or graphic over it but it's so far forward it might look worse. Also I'm afraid the crack will spread/creep until you have to "look away because it's hideous"! Any ideas??
Attached Thumbnails Click image for larger version

Name:	Rp43923.jpg
Views:	12
Size:	39.0 KB
ID:	995679  
Old 07-22-2008, 05:16 PM
  #2  
Senior Member
 
colmo-RCU's Avatar
 
Join Date: Aug 2003
Location: Bogota, COLOMBIA
Posts: 322
Likes: 0
Received 0 Likes on 0 Posts
Default RE: What would you do with crack?

I would boil it on a spoon, then inject it in a vein!!!!!!
Old 07-22-2008, 05:20 PM
  #3  
Senior Member
 
colmo-RCU's Avatar
 
Join Date: Aug 2003
Location: Bogota, COLOMBIA
Posts: 322
Likes: 0
Received 0 Likes on 0 Posts
Default RE: What would you do with crack?

LOL!!

No, seriously, If the cowl is made o fiberglass i´d join the crack and let a drop of thin ca run though it on the inside. Then sand the inside with coarse sandpaper and clean it thoroughly with soap and water and then alcohol (rubbing, not scotch) when it is dry. Then just some 2 oz fiberglass with epoxy should join it for ever
Old 07-22-2008, 07:33 PM
  #4  
Thread Starter
 
Bass1's Avatar
 
Join Date: Dec 2002
Location: Va.Beach, VA
Posts: 2,472
Likes: 0
Received 1 Like on 1 Post
Default RE: What would you do with crack?

Unfortunately I haven't been able to examine the cowl first hand and the guy who wants to sell it is out of town. I'm pretty sure it has to be cracked all the way through as I don't think the crack is just in the gell coat. I'm mainly concerned with the cosmetically unappealing crack in the gell coat[:'(]
Old 07-22-2008, 09:18 PM
  #5  
My Feedback: (10)
 
Join Date: Oct 2002
Location: Evansville, IN
Posts: 485
Received 0 Likes on 0 Posts
Default RE: What would you do with crack?


ORIGINAL: Bass1

Hi, I have an opportunity to purchase a 50cc ARF for a good price however there is a hairline crack on the top of the cowl that bugs the heck out me. I thought of putting a decal or graphic over it but it's so far forward it might look worse. Also I'm afraid the crack will spread/creep until you have to "look away because it's hideous"! Any ideas??
Is the fiberglass cracked or just the paint?

LLD
Old 07-22-2008, 10:13 PM
  #6  
Thread Starter
 
Bass1's Avatar
 
Join Date: Dec 2002
Location: Va.Beach, VA
Posts: 2,472
Likes: 0
Received 1 Like on 1 Post
Default RE: What would you do with crack?

I'm really not sure. It could be just the gel coat/paint is cracked. I won't know for sure until he gets back from out of town. At any rate I'm trying to figure out a way the easiest and best way to hide/mask the ugly visible crack. Darn crack will kill ya'![sm=lol.gif]
Old 07-23-2008, 06:50 AM
  #7  
Senior Member
 
Join Date: Dec 2001
Location: Brantford, ON, CANADA
Posts: 3,305
Likes: 0
Received 0 Likes on 0 Posts
Default RE: What would you do with crack?

Let us assume the worst and the crack goes right through. That is about a one hour fix job to get it ready to repaint. Sand away the paint pretty much to the line you have drawn around the crack. If it is just a paint crack then use an epoxy based filler to blend the sanded area to the existing paint. Sand all of the red, not the other colours. Mask off the other colours. Prime, repaint red.

If the cowl is cracked then clean up and patch the inside as descibed in a previous post then finish the outside as described above. I am suggesting repainting all of the red to prevent a colour mismatch with the patch.

If the airplane is an attractive price, that crack would not stop me from buying it.

See the before and after pictures for one of my repair jobs. I do have a 12 picture sequence of the whole process.

Ed S
Attached Thumbnails Click image for larger version

Name:	Wt58960.jpg
Views:	7
Size:	75.7 KB
ID:	996095   Click image for larger version

Name:	So42837.jpg
Views:	9
Size:	61.1 KB
ID:	996096  
Old 07-23-2008, 08:12 AM
  #8  
Senior Member
 
TeamSeacats's Avatar
 
Join Date: Mar 2007
Location: Greenville, SC
Posts: 174
Likes: 0
Received 0 Likes on 0 Posts
Default RE: What would you do with crack?


Ed,

That crack is a little bigger.

Jake
Old 07-23-2008, 08:52 AM
  #9  
Senior Member
 
Join Date: Dec 2001
Location: Brantford, ON, CANADA
Posts: 3,305
Likes: 0
Received 0 Likes on 0 Posts
Default RE: What would you do with crack?

Ed,

That crack is a little bigger.


Hi Jake,

I gradually made it smaller.

Ed S
Attached Thumbnails Click image for larger version

Name:	Da83473.jpg
Views:	8
Size:	74.0 KB
ID:	996137  
Old 07-23-2008, 02:25 PM
  #10  
Thread Starter
 
Bass1's Avatar
 
Join Date: Dec 2002
Location: Va.Beach, VA
Posts: 2,472
Likes: 0
Received 1 Like on 1 Post
Default RE: What would you do with crack?

If it is just a paint crack then use an epoxy based filler to blend the sanded area to the existing paint
Ed, Assuming it is just a paint crack, Where would I find an epoxy based filler that sands relatively easy? I believe the covering is Ultracote and they don't make the matching paint in "Rattle cans" anymore and I don't have any spray equipment. Any suggestions in a rattle can paint that might work?
Old 07-23-2008, 03:11 PM
  #11  
Senior Member
 
Join Date: Dec 2001
Location: Brantford, ON, CANADA
Posts: 3,305
Likes: 0
Received 0 Likes on 0 Posts
Default RE: What would you do with crack?

I suggested an epoxy filler rather than a polyester filler in case the cowl was epoxy glass. polyester might not cure over an epoxy base. Any good quality filler would be suitable.

I have not used them myself but many people seem to have success with Tremclad or Rustoleum spary cans. Automotive lacquers would have a greater range of colours.

Ed s

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.