User Tag List

Results 1 to 8 of 8
  1. #1
    Regular Member
    Join Date
    Feb 2012
    Location
    Europa
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Cracked FZ Forza kevlar 115

    Hello everyone!


    My friend from work asked me if I could do something about his favorite racket that got a crack.
    The crack is close to the end of the shaft where the shaft is inserted to the head.
    Looking closely to the crack, I can see that there seems only the gel-coat
    (epoxy finish) has been cracked and the carbon/kevlar shaft seems to be okay...
    at least it feels strong when I try to flex it a little. I'm sure you guys have seen such cracks and as I'm not into badminton I have no idea how this kind of damage should look when professional repair is made.
    I have some 24h epoxy resin and a lot of unidirectional carbon fiber... probably I have even some kevlar cloth (i have to find it first though) in the drawer.
    If someone is ready to point to some pictures of repaired racket with similar damage I will be really happy... just to see how much fiber bandage a professional repair shop puts on this kind of damage.

    thanks, Icoman
    Attached Images Attached Images    

  2. #2
    Regular Member
    Join Date
    Feb 2012
    Location
    Europa
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    As for repair I was thinking to go like this:
    1.
    Protect all but a crack (5cm) with some PVC bags.
    2.
    Sand off the gel coat around the wound with dremel tool.
    3.
    Prepare strips of unidirectional carbon fiber
    4.
    Masking both ends of repair area (lift the borders up approximately 1mm)
    5.
    mix resin
    6.
    heat resin in the oven on 80C
    7.
    soak the fibers into resin
    8.
    apply the fibers so they will be align along with the shaft
    9.
    wrap the joint with peel off fabric
    10.
    heat up with hair dryer for about 30 min.
    11.
    Let it cure for a day
    12.
    Sand and polish.
    13.
    varnish with a coat of resin.


    That would be my way to go...
    If you have some suggestions please don't hesitate to correct me.

  3. #3
    Regular Member
    Join Date
    Feb 2012
    Location
    Europa
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Obviously talking to myself again...

    I was really hoping for some advice. I couldn't wait any longer as I have other things to... like building airplanes for instance.
    For now... epoxy is curing under stream of hot air from hair dryer. As I said before... about 20 cm of unidirectional carbon fiber was aplyed along with the shaft and wrapped with kevlar string from and used parachute wire. There will be a big bulge for sure.

  4. #4
    Regular Member demolidor's Avatar
    Join Date
    Jan 2003
    Location
    @Hollanti
    Posts
    11,746
    Mentioned
    22 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by Icoman View Post
    Obviously talking to myself again...

    I was really hoping for some advice. I couldn't wait any longer as I have other things to... like building airplanes for instance.
    For now... epoxy is curing under stream of hot air from hair dryer. As I said before... about 20 cm of unidirectional carbon fiber was aplyed along with the shaft and wrapped with kevlar string from and used parachute wire. There will be a big bulge for sure.
    I think we are more interested to see your results as this process is not common at all. "Normal" is cut your losses and get a new one ...
    Depending on how powerfull your friend is, it might still be perfectly useable as is.
    Though I have seen "professional racket repair" services offered in UK, but don't recall anyone posting results here or even having had it done.
    Here is one shop that offers the service I recall seeing: http://www.badmintoncentral.com/foru...ey-can-fix-it-!
    (see they have completely renewed their website so can now be found here: http://www.thebadmintoncompany.co.uk...ductTypeID=162)
    Last edited by demolidor; 02-11-2012 at 06:11 AM.

  5. #5
    Regular Member
    Join Date
    Feb 2012
    Location
    Europa
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Oh, thanks for reply. I had no idea this kind of repair is not normal.
    This situation reminds me when Serbians shot down F-117 stealth fighter in 1999.
    Later they said: Sorry we didn't know it is invisible

    So far I'm content with the repair. Resin is completely cured, the bulge is about 3 cm long, it doesn't look preety though. The racket gained 2,3 g in weight so far.
    When I was flexing it before repair, there was a cracking noise coming from the crack and now it is gone.
    Next step will be to spackle the bulge with spackle made of short (1-2mm) carbon fibres mixed with resin and some microbaloons so I can sand it down to a nice rounded shape.
    The joint is stiff but as kevlar is on the top I can't sand it well. (kevlar is something that can't be sanded as well as carbon or fiberglass)
    That's for now. I'm out to a petrol station for some free PVC gloves and than will try to finish this thing.

  6. #6
    Regular Member
    Join Date
    Feb 2012
    Location
    Europa
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Hi pipol

    If there is some interest in how-the-repair-was-done, I can post some pictures.
    The owner is content with the repair and as he said racket feels preety much the same as it was.
    Now I'm searching for a badminton racket with more damage to see if I can fix it.

  7. #7
    Regular Member
    Join Date
    Jul 2011
    Location
    singapore
    Posts
    816
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    once it breaks.. u have to look for another same piece...to replace rite?

  8. #8
    Regular Member
    Join Date
    Feb 2012
    Location
    Europa
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    okay than, so this will be my last visit to this forum.
    Moderators can delete my account with my permission.

Similar Threads

  1. Forza Kevlar 7-04
    By K-MusclePower in forum Racket Recommendation / Comparison
    Replies: 2
    : 06-24-2010, 03:38 PM
  2. Forza Kevlar. Help me, please.
    By Simoneolivelli in forum Racket Recommendation / Comparison
    Replies: 1
    : 03-23-2009, 05:12 AM
  3. WTB Forza Kevlar - GVA
    By K-MusclePower in forum Buy & Sell - Read the rules sticky before you post
    Replies: 4
    : 01-01-2008, 02:22 AM
  4. Forza Kevlar 11
    By taopaipai1 in forum Racket Recommendation / Comparison
    Replies: 7
    : 12-30-2007, 09:10 AM
  5. Forza Kevlar 3
    By ViningWolff in forum Badminton Rackets / Equipment
    Replies: 0
    : 01-27-2005, 12:01 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •