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Author Topic: Is it possible to fix a broken fin?  (Read 1727 times)

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Offline greenninja85

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Is it possible to fix a broken fin?
« on: November 28, 2012, 06:07:43 PM »
A piece about a inch long and 1/4 deep chipped off my head. I have the piece.  Any ways to get it back on there?
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Offline lone*X

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Re: Is it possible to fix a broken fin?
« Reply #1 on: November 28, 2012, 09:03:36 PM »
A VERY GOOD welder could build up the missing area to oversize and you could grind/file it back down to shape.  Seen a few done that way with good results. 
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Lone*X  ( Don )

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Offline iron_worker

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Re: Is it possible to fix a broken fin?
« Reply #2 on: November 29, 2012, 07:11:00 AM »
Check this link:

http://www.britbike.com/forums/ubbthreads.php?ubb=showflat&Number=362776&page=1

From this project thread:

http://forums.sohc4.net/index.php?topic=52551.0

We just discussed this yesterday in his thread. lol

IW
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Offline MCRider

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Re: Is it possible to fix a broken fin?
« Reply #3 on: November 29, 2012, 07:19:57 AM »
I used JB WEld and some furniture veneer clamps on a fin chip a bit larger than yours, top cylinder fin. I had the piece. can't hardly tell.

Can't tell at all as it is hidden under the head fin overhang.
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Offline swan

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Re: Is it possible to fix a broken fin?
« Reply #4 on: November 29, 2012, 08:16:53 AM »
Nice one Iron Worker, you beat me to the link!
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1975 CB400 F cafes, 1974 CB750 K4 Cafe, 1966/1976 Triumph/ Norton Triton Cafe and 1962 DBD34 BSA Gold Star Clubman.

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Offline greenninja85

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Re: Is it possible to fix a broken fin?
« Reply #5 on: November 29, 2012, 09:29:07 AM »
Awesome thanks guys. I have hope again lol
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Offline Garystratos201

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Re: Is it possible to fix a broken fin?
« Reply #6 on: November 29, 2012, 01:51:22 PM »
I used JB Weld also just sand off the excess and you cant hardly tell...........Gary
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Offline Damage Inc

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Re: Is it possible to fix a broken fin?
« Reply #7 on: December 02, 2012, 03:37:50 AM »
Here's a before and after. I think it will come up fine, with a soda or bead blast. I used a tig welder to build up the fins, a light grind of the bulk and file finish.http://i1158.photobucket.com/albums/p615/gl455darkly/100_4064.jpg[/img]
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Offline Damage Inc

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Re: Is it possible to fix a broken fin?
« Reply #8 on: December 02, 2012, 03:42:50 AM »
Sorry greenninja, I stuffed up the photos some how. I'll try again. If it doesn't work this time I'll give it a miss.


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There is nothing Man makes, that Man can't break.

Offline Garystratos201

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Re: Is it possible to fix a broken fin?
« Reply #9 on: December 02, 2012, 08:02:16 AM »
Nice work Damage.................Gary
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