Just to toss a (rusty) wrench into Steve's comments (because he's recently been mean to me, offlist) I must add that one really doesn't need multiple cogs at all; or if you have a second (you wimp, you) just screw it onto the other side of the hub like the rest of us. No dish, no mess, no worries.
But 8 sp was indeed slightly closer spaced than 7 -- which is why, presumably, they went with 130 instead of 126 OL spacing. On 12/3/08, Steve Palincsar <[EMAIL PROTECTED]> wrote: > > On Wed, 2008-12-03 at 11:25 -0800, tallsteelbikes wrote: >> The cog spacing got tighter when they went from 6 to 7 not from 7 to 8 >> speed. > > According to the table on Sheldon's site > http://sheldonbrown.com/k7.html > both sprocket thickness and spacer thickness changed between Shimano > Hyperglide 7 and Shimano 8. The 7spd is 1.85mm sprocket thickness, > 3.15mm spacer thickness, and the 8 is 1.8mm sprocket thickness and 3.0mm > spacer thickness. Center to center spacing went from 5.0mm for 7 spd > Hyperglide to 4.8mm for 8spd. > >> So if you want a stronger wheel with less dish go with 7 speeds or >> less on a 7 speed freehub cassette system or a 5/6/7 speed freewheel >> system. > > Or, as others have suggested, you can use an asymmetric rim. > >> Who really needs or wants 8/9/10 speeds > > For some applications the closer spacing of gears (not sprockets) gives > you some advantages. To me those advantages primarily apply to lightly > loaded bikes. When I pack on some cargo, I find I lose momentum quickly > enough that the 1-tooth gear changes that seem so nice and handy on an > unloaded bike become insignificant piddling hardly worth shifting for. > >> and weaker wheels with more cost and maintenance anyway? > > Not a given, as far as I'm concerned. Maintenance is no different; > chain and sprocket life seem to be the same. > > >> Only reason is if you are stuck on STI >> or just need the latest gadgets to keep up with the Jones'. > > And we haven't even mentioned the 2009 Campagnolo Super Record group -- > the one they should have called the Spinal Tap Gruppo (because it goes > to 11). I think bikesnobnyc's take on that fully represents my > position. > > > > > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
