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Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

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[Bike] Hope Freehub

From: andrew cooke <andrew@...>

Date: Sat, 31 Aug 2019 21:54:18 -0400

Some notes on the Hope specific freehub and related cassettes.  In
general, more force is needed than you might expect when manhandling
these things.

 * The two-piece cassette is difficult to separate.  It helps to cool
   the entire cassette (since aluminium has a higher thermal expansion
   coeff than steel) and then lever them apart with something wooden.

 * Putting them back together is similarly fraught.  The spot on the
   aluminium spider aligns with the biggest gap in the internal
   'teeth' of the steel part.  Aligned correctly you can see all teeth
   should be OK (any other alignment and some teeth are 'blocked').
   With that, place the alloy side down on a flat wooden surface and
   then lean on the steel part (I used some stiff gloves to protect my
   hand and a fair amount of weight).

 * Removing end-caps on the front hub is easily done by pushing them
   out with a pencil from the other side.

 * Removing the existing freehub was possibly by clamping it in a
   wooden vice and pulling the hub upwards.

 * The replacement freehub goes on easily enough - you need to push
   the pawls into place - but the green seal again needs a fair amount
   of force from a wooden implement before it clicks inside.

 * The funny looking endcap is QR; the shorter normal endcap is
   12x135; the longer 12x142.

And hope are responsive (if not overly effusive) to enquiries at the
normal email address.


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