I am glad somebody remembered the name of the superlight CLB callipers correctly - yes the ones I have are the 'Compact' ones.
Hilary Stone, Bristol, England
Kurt Sperry wrote:>
> Leaving aside the question of the suitiblity of Ti alloy for calipers, I
> recieved the following from an apparently well informed prospective listmember
> from England as regards the CLB "stirrups" in question:
>
> "Hi, there. I've been reading the items about the CLB brake stirrups that you
> introduced on the CR List. Not beinga member yet of
> the List - but I do keep trying to understand Dale's secret way of getting on
> - I cannot post this reply directly onto that List If you
> want to post it without mentioning my namr, that would be OK by me.
>
> Most of the replise so far have contributed something towards a reasonably
> correct interpretation, but none has so far got a 100%
> correct answer, not even Hilary Stone.
>
> I knew the CLB company quite well and bought supplies from them in the 80s,
> until the company closed later in that decade. The
> brakes in question are the "Compact" models, with stirrup length of 38 - 47mm.
> They weigh 100gms (3.53oz) each. They are
> second in the CLB range to the "Space Line" model which weighed in at only 90
> gms each. The main difference was that the
> SpaceLine had a hollw axle made from Zicral alloy coated with PTFE, and a
> special plastic cover over the front made from black
> polyurethane.
>
> The stirrups are not made out of titanium; nor did the company ever use
> magnesium. Titanium could have work-hardened and
> become brittle under continued braking stresses. The meatl employed is
> aluminium alloy, type AS 13GL, heat-treated. The finish
> on this pair is "colourless anodization on Poli Luxe finish" (quoted from the
> 1986 catalogue). Other finishes included white, black,
> or "Gold Metallized". The finish on the SpaceLIne model was "Slate hard
> anodising in Charcoal grey"."