Richard asked:
> I have a pair of 27 ins. Weinmann concave clincher rims. I noticed the rims have
> no hook for the tyre bead and don't recall ever owning a hookless clincher rim.
> What do I need to know for safe tyre mounting and use?
Before the advent of the Mavic module E rim, no alloy clincher had a hooked edge. You must use a tire with a wire bead (do not use folding tires). Beyond that there is no particular difference to any other tire.
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Steven Maasland
Moorestown, NJ