Wednesday, March 26, 2008

Davis fork crown







This is a Davis sand cast fork crown from the 50's. The first two pictures show the crown in the untouched state. The crown is pretty crude to begin with. I refer to these sand castings as lumps of coal. It takes a great deal of labor to make them presentable. These castings make me appreciate the quality of investment casting. I wouldn't want to work exclusively with sand castings but occasionally it's fun.

I didn't like how the groove looked on this crown so I filed it with brass. Since the fork will be silver brazed the brass won't melt when I heat the crown up again during construction. You can see I removed a lot of steel in coming up with this shape. Additionally I thinned out the crown a great deal. I will thin it more after brazing up the fork.

9 comments:

NIC said...

Unreal.

Forest Bikes said...

Cool! I always look forward to your updates Curt. Keep the good stuff coming. Thanks! Craig

Reflector Collector said...

Amazing transfomation!

To me the sign of an artisan is one who can make something both functional and beautiful. You’ve managed to turn something comparatively crude into something striking. - Wow

barb michelen said...
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Dumuro said...
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steve garro said...

that's some cool stuff! steve.

steve garro said...

that dumuro link above is a big fat virus package! DO NOT OPEN IT!!!!!! steve.

Curt Goodrich said...

Steve,

Thanks for the heads up! Sorry for anyone's inconvenience.

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