Author Topic: Is it possible to fix a broken fin?  (Read 1728 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?

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. 
Lone*X  ( Don )

75 CB550K1  
VTX1800C for two up cruisin.
Several others have come and gone but whose keeping track.
52 years on two wheels and counting.....
"The best safety feature of any motorcycle is the one God put between your ears.  It's also the least utilized"

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

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.
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

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!
1975 CB400 F cafes, 1974 CB750 K4 Cafe, 1966/1976 Triumph/ Norton Triton Cafe and 1962 DBD34 BSA Gold Star Clubman.

CB750 build http://forums.sohc4.net/index.php?topic=52551.0

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

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
Visit my build project;
http://forums.sohc4.net/index.php?topic=111620.0

Current ride; Bass boat.... 2005 Ranger 521VX,250 hp Mercury Verado, super charged and direct fuel injected. Not a bass on the lake can out run me !!!

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

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.


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
Visit my build project;
http://forums.sohc4.net/index.php?topic=111620.0

Current ride; Bass boat.... 2005 Ranger 521VX,250 hp Mercury Verado, super charged and direct fuel injected. Not a bass on the lake can out run me !!!