<or as we used to call 'em - "pukka-pukka"> That's exactly the term and the trade off I use when setting up cantilevers. Shorter flatter straddle => more spongy but more powerful. Taller straddle => more rim clearance and more pukka- pukka. I picked up pukka-pukka in 1988, working at a shop. I remember the mechanic who taught me the term.
On Apr 12, 12:08 am, CycloFiend <cyclofi...@earthlink.net> wrote: > on 4/11/10 12:54 PM, Jason at j.achil...@gmail.com wrote: > > > Oh, I was not implying that it would snap, rather if this nice > > powerful brake with loads of modulation would flew on that bolt, > > creating a spongy feeling. > > assuming "flew" = "flex".... ;^) > > Without getting deeply into general brake design, "sponginess" you feel at > the lever has more to do with the specific mechanical advantage. Brakes > that feel "hard" (or as we used to call 'em - "pukka-pukka") are less > powerful. Sheldon wrote it more elegantly than I can relate here: > > http://sheldonbrown.com/cantilever-geometry.html > > Flexing on the bolt is not too likely, but if it occurred, I would suspect > it would create chatter as it moved on the rim, rather than a change in > feel. Again, there I think you'd find the rear wheel locked before flex like > that could occur. > > - J > > -- > Jim Edgar > cyclofi...@earthlink.net > > Cyclofiend Bicycle Photo Galleries -http://www.cyclofiend.com > Current Classics - Cross Bikes > Singlespeed - Working Bikes > > Your Photos are needed! -http://www.cyclofiend.com/guidelines > > "I thought the idea was to waste the rest of our lives together.." > -- Cyril, "Breaking Away" -- 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.
