i finally understand. e
On Fri, Nov 12, 2010 at 3:51 PM, William <tapebu...@gmail.com> wrote: > Either you're missing something or I'm missing what you are saying. > The key for retro direct is that there have to be two independent > freewheel mechanisms because when one is driving the wheel, the other > one is freewheeling backwards. You can't just use two cogs on one > cassette, because that cassette body cannot simultaneously be rotating > forward and backward. > > On Nov 12, 3:33 pm, erik jensen <bicyclen...@gmail.com> wrote: > > for the cheapest route, why not match chain differences between the two > > front chainrings across a typical cassette? then you wouldn't need to do > > much other than wrap the chain and maybe replace the unused cogs with > > spacers. > > > > ie. 46x34 front matched to 16x28 rear > > > > maybe i'm missing something, but that seems like it'd work. > > > > ~erik > > > > > > > > On Fri, Nov 12, 2010 at 1:19 PM, Z I <rockscissorpa...@gmail.com> wrote: > > > I saw these being used in one of the youtube videos on this. This is a > > > good resource.. $75 seems pretty steep though. Unless you compare it > > > the two-cog White Industries freewheel Riv sells! I guess that's what > > > an "An eccentric bike nerd building a retro-direct bike" has to pay. A > > > 26T sounds just about right. > > > > > I'm going to root around amongst the bike parts at the bike co-op and > > > see if I can put some sort of large freewheel together myself first. > > > At least for the first attempt. > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "RBW Owners Bunch" group. > > > To post to this group, send email to rbw-owners-bunch@googlegroups.com > . > > > To unsubscribe from this group, send email to > > > rbw-owners-bunch+unsubscr...@googlegroups.com<rbw-owners-bunch%2bunsubscr...@googlegroups.com> > <rbw-owners-bunch%2bunsubscr...@googlegroups.com<rbw-owners-bunch%252bunsubscr...@googlegroups.com> > > > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/rbw-owners-bunch?hl=en. > > > > -- > > oakland, ca > > bikenoir.blogspot.com > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To post to this group, send email to rbw-owners-bu...@googlegroups.com. > To unsubscribe from this group, send email to > rbw-owners-bunch+unsubscr...@googlegroups.com<rbw-owners-bunch%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/rbw-owners-bunch?hl=en. > > -- oakland, ca bikenoir.blogspot.com -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
