"ric" <
[email protected]> wrote in message
news:
[email protected]...
> anyone know if a shimano IM70 front roller brake (as fitted to
> ridgeback nemesis et al) can be converted readily to a conventional
> mechanical disk brake? Are the fork mounts compatible, and could I
> retain the standard brake lever? Would it be easiest to replace the
> hub at my LBS and then fit the rest myself?
> Any advice appreciated....
I recently upgraded my smaller Shimano IM50 front roller brake to the IM70
and I'm about 118 kg with my bike being about 21 kg. I ride it down the
steepest of hills in my local area (40 mph + if I don't brake and it's a sit
up and beg bike with all the aerodynamic drag that offers). I find the front
brake stopping power is now fine (although it was insufficient with the
previous brake). The IM70 is specified as the Hi Power version of these
roller brakes. Although there is a release mechanism to help prevent 'over
the bars' incidents, the bike shop technician who installed the brake
advised me this clutch was adjustable. I've also bought a tube of specialist
Shimano Roller brake grease for lubing the brake from time to time.
It sounds like there's something not setup or maintained correctly with your
brake unit if the IM70 isn't strong enough. If the release clutch is coming
into action regularly, you need to get it adjusted. I've tested mine and it
really does only release when you try to stop without using enough space.
Paul