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Hi all,

 

Just thought I'd change the fork pin for a new strengthened one as the gearbox is out. As feared the damm thing has sheared and only the threaded section came out. Does anybody have any ideas on how to get the rest out? As ever a quick ten minute job has turned into a scratching the head moment

 

Cheers

 

Rob

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Cheers Nick, I'll give that a go tonight.

 

Rob

Edited by Rob the jeweller
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Hi Rob,

before you cut the cross shaft have a look at the fork where the pin would protrude if it screwed in further.

Is it possible to drill this area and knock the remnants of the pin out.. you may save the shaft and fork.

 

When you come to rebuild it you will need to support the new taper pin.

BUT!!! firstly make sure that the new pin, new fork AND new/old shaft actually fit together fully and correctly - there are some badly made pins and shafts out there. assemble these on the counter of the shop.

 

The usual method is a scroll pin through the fork and shaft, or a 1/4 bolt. But the fit needs to be good.

 

I went the other way and fitted a bush in the tapping hole in the fork (apprx 0.3" dia)on the other side of the shaft and turned a 1/4" parallel nose on the taper pin. This puts the taper pin in double shear and will not fail.

 

 

Roger

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Tonight I drilled the the fork directly above the old pin. I was then able to punch out the offending pin as suggested. The new pin went in a treat and screwed up nicely, I finished it all off with binding wire through the pin and around the shaft. Hopefully that's everything all done.

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Tonight I drilled the the fork directly above the old pin. I was then able to punch out the offending pin as suggested. The new pin went in a treat and screwed up nicely, I finished it all off with binding wire through the pin and around the shaft. Hopefully that's everything all done.

 

Best to cross pin with a 4mm OD roll pin as well.

Stuart

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