Michael Dart <
[email protected]> wrote in message
news:[email protected]...
>
> "Shaun Rimmer" <
[email protected]> wrote in message
>
news:[email protected]...
> > >
> > > It has to do with the 'chain wrap capacity'. You take the difference between the largest and
> > > smallest cog in the rear and the same in the
> front
> > > and add the two numbers together. This is the 'chain capacity'. You
> > match
> > > this number with the rear derailleur capacity number on the spec sheet
> > (and
> > > max cog number you want to use). Since us downhillers only use one
cog
> up
> > > front the capacity number is small so we should use a short or mid
cage
> > rear
> > > derailleur. I use mid cage (GS) XTR rapidrise on my DH bikes. I've
> seen
> > > road derailleurs used as well. It's when those XC weenies shift into
> the
> > > small/small combo the chain has to have somewhere to go.
> > >
> > > HTH
> >
> > I thought that's what I'd said? ',;~}
>
> Oh it was, I was just adding the calculation for determining the correct capacity.
Because Slacker is the sort for number crunching? - I don't buy it! ',;~}
> > > Mike -BTW the mid cage is shorter than the long one....duh!
> >
> > And I thought it was longer than the short one - Thanks for clearing
that
> up
> > for me.
> >
>
> Any time bro, any time. ;^)
Heh!
Shaun aRe
