RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: Moose on September 01, 2008, 06:36 PM
-
I have a set of forks that has a small piece missing from the fork crown (where the crown race fits). I haven't tried a crown race yet, but can you repair them? If so how or is it not worth it?
-
Is it like a chunk missing or all around ? Will it mean the race is wobbling about Phil? ???
-
if the surface the crown race mounts to has a dent in it, I would just ride as normal as long as the crown race still fits. Wouldnt worry about it.
If its bad, I suppose you could eithet stick is straight in a lathe and machine the level to match the groove or braze in a filling and file it down, possibly also with some lathe at the end to make it tidy.
-
have you got a pic ???,but by the sounds of it you could build up area with a bit of weld and grind-file to shape ;)
-
Right - off to get a picture :daumenhoch:
-
I would be reluctant to apply too much heat, if its going on a rider. They are heat treated usually, after the assemly and "tigging" has taken place, I believe. Get it too hot and you will screw up this process.
Ad
-
have you got a pic ???,but by the sounds of it you could build up area with a bit of weld and grind-file to shape ;)
Phil, is this the same problem i have with my Hutch forks i showed you. ??????????
Philip, sorry for the hijack mate but i'm interested to see if this is the same problem as i have. :-[ :-[ :-[ :angel:
-
Don't know if you can make it out or not ...............................
(http://www.radbmx.co.uk/archive/albums/e250/Christmoose/GT/P1010417.jpg)
(http://www.radbmx.co.uk/archive/albums/e250/Christmoose/GT/P1010418.jpg)
(http://www.radbmx.co.uk/archive/albums/e250/Christmoose/GT/P1010419.jpg)
(http://www.radbmx.co.uk/archive/albums/e250/Christmoose/GT/P1010420.jpg)
-
as far as i can make out by the pics there is a bit of the shoulder missing ??? if so just a bit of weld should build up area,and shape with sander-file ;)
-
have you not got a macro button (the flower!) ;D
I suggest you get someone who works with lathes to spin the whole thing off. Then make a shim for applying the crown race,
I have to use a shim to convert between JIS and ISO, made a copper shim, works a treat.
-
Electrical tape can work wonders in situations like this ;)
-
Electrical tape can work wonders in situations like this ;)
or strips of tin foil :daumenhoch:
-
Electrical tape can work wonders in situations like this ;)
or strips of tin foil :daumenhoch:
I always used that special headset race shim material ... the stuff that come free around coke when you get it in a can
-
yep same as alex as had a few forks bitd that needed that ,never had a problem after