I believe he was filmed riding the retro-direct bike forwards and they're playing the video backwards, or did I miss someone saying that already? Aaron
On Tue, Nov 16, 2010 at 2:01 PM, William <tapebu...@gmail.com> wrote: > OK, here's a real brain-tweaker. A retro-direct bike cannot be rolled > backwards under any circumstance. You have to pick up the rear wheel > to back up the bike. Wrap your head around that. > > On Nov 12, 4:15 pm, erik jensen <bicyclen...@gmail.com> wrote: >> 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. > > -- 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.
