Technical > Luggage

Using 6mm bolts on a thorn sherpa?

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andys:
Hello,

according to various places rear racks can take a lot more weight if they are attached with 6mm bolts, but my sherpa only has 5mm holes in the rear dropouts.

Is it possible to use a tap to cut a 6mm thread without damaging the frame?

sbseven:
There was some discussion on this topic within this thread: http://www.thorncycles.co.uk/forums/index.php?topic=1921.msg10583#msg10583

Thorn has this adapter: http://www.sjscycles.co.uk/product-Thorn-Thorn-For-Rohloff-Cast-End-2-x-M5-to-1-x-M6-Stainless-Dropout-Adaptors-11703.htm. Would this fit the Sherpa bosses?

Shaun

julk:
I have done this with my rohloff exp.

The sherpa rear dropout rack point would need sufficient material round the 5 to 6mm hole - does yours look like it is part of a bigger forged dropout - if so have a go.

I got a set of taps from here.

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