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Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

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Old 01-12-11, 02:06 PM   #1
gutbucket
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drilling tops of fork crown of lugged steel fork

Mounting a rack to a lugged steel fork and looking for options that will not interfere with brake mounting or operation. The shoulders on the fork crown are pretty wide and the fork itself is quite beefy so I was wondering if it was advisable to drill the crown to accept threaded inserts.

Thanks,

Dave
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Old 01-12-11, 04:56 PM   #2
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Hard to say, not enough detail. Is paint a consideration, will you be making a custom rack? Top or sides, sloped or level? How much cutout?

If paint isn't a concern, then I would put them in the usual place on the side of the fork. At least for touring, being able to use stock gear in a pinch is an advantage so standard positions with the workaround in your custom rack would make sense.

One trick I use a lot, I invented this (probably for the 1000th time), is to place a threaded insert under/inside the steering tube. This works in retrofit no tools situations, because one can whittle and glue something in there, or you can do it all fancy do a very neat job all metal. It basically works like a crown attachment point except if you already have that filled for brakes, or you want a slick fender point.

Another option is to braze barrels anywhere.
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Old 01-12-11, 04:59 PM   #3
unterhausen
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the part of the fork crown that is above the fork blade is not contributing much at all to the strength of the fork. Framebuilders do this all the time, but they usually put water bottle bosses in to make it cleaner.
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Old 01-13-11, 11:44 AM   #4
gutbucket
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The insert I'm using is available at Home Despot in Canada. Its made by Paulin and its called 'Sert-A-Nut' . Designed to go in blind holes but works in drill thru applications as well. Thread size is #10-24 and the hole I would have to drill would be 9/32". I've seen bosses brazed in this same place but I don't have access to a builder.
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